KR20240117448A - Electronic device and method for controlling power provided by the electronic device to external electronic device - Google Patents

Abstract

An electronic device according to an embodiment includes a battery, a USB connector, a first charging circuit, a second charging circuit, and a processor, wherein the processor determines that the connection of an external electronic device through the USB connector is identified. 2 Controls second power of a designated second voltage higher than the first voltage of the battery through a charging circuit to be output through a designated pin in connection with power delivery of the USB connector, and while the second power is output, the external Obtain information associated with an operable voltage of the electronic device, stop outputting the second power based on the obtained information, and use the first charging circuit to supply the first power of the first voltage from the battery to the It may be set to be controlled to be output through a designated pin, and may include other embodiments.

Description

Electronic devices and methods for controlling power provided from electronic devices to external electronic devices {ELECTRONIC DEVICE AND METHOD FOR CONTROLLING POWER PROVIDED BY THE ELECTRONIC DEVICE TO EXTERNAL ELECTRONIC DEVICE}

Various embodiments of the present disclosure relate to a method of controlling power provided from an electronic device to an external electronic device.

Thanks to recent remarkable developments in information and communication technology and semiconductor technology, the distribution and use of various electronic devices is rapidly increasing. For example, various electronic devices such as mobile phones, MP3 players, PMPs (Portable Multimedia Players), tablet PCs, smartphones, and e-readers are provided to users, and users carry a variety of content while carrying these various electronic devices. can be accessed.

These electronic devices can be connected to various external electronic devices, and there is a trend toward being implemented to provide expanded functions through connection with external electronic devices. For example, electronic devices are connected to various OTG (on the go) devices such as speakers, earphones, memory, and fans through connectors, and are implemented to transmit and receive data while providing power to the OTG devices.

The electronic device supplies power to the external electronic device via VBUS when an OTG device (such as a universal serial bus (USB) audio device or a USB type c earphone or a digital analog converter (DAC)) (hereinafter also referred to as an external electronic device) is connected. This allows the external electronic device to start operating. An external electronic device may perform a designated function (e.g., a digital sound source playback function, an external sound recording function, or another OTG function) through USB communication with the electronic device using power supplied from the electronic device.

When connected to an external electronic device, the electronic device may be set to provide power of a fixed second voltage (eg, about 5V) rather than the first voltage of the battery to the external electronic device. The electronic device receives a first voltage of power provided from the battery to provide power of the first voltage to an external electronic device when the first voltage of the battery (e.g., about 3.4 V to about 4.4 V) is lower than the second voltage. A boost operation can be performed to boost the voltage to 2. As described above, when the electronic device is set to provide power of a fixed second voltage (e.g., about 5V) to the external electronic device, the second voltage is provided even if the external electronic device requires power of the first voltage lower than the second voltage. A boost operation may be performed to output, which may result in unnecessary current consumption.

According to one embodiment, when connected to an external electronic device, if the operating voltage of the external electronic device is higher than the second voltage of the battery, the second voltage of the battery is boosted to the first voltage through the first circuit to supply the first voltage to the external electronic device. An electronic device and an electronic device capable of providing first power and allowing second power of a second voltage to be provided from the battery to an external electronic device through a second circuit when the operating voltage of the external electronic device is less than the second voltage of the battery. The goal is to provide a method for controlling power provided to external electronic devices.

According to one embodiment, when connecting with an external electronic device, if the operating voltage of the external electronic device is identified as being less than the second voltage of the battery, the first circuit path is switched to the second circuit path to generate the second voltage from the battery without unnecessary boosting operation. 2 An electronic device that can provide power to an external electronic device while preventing external electronic re-recognition due to loss of power transmission between the electronic device and the external electronic device when switching from the first circuit path to the second circuit path, and an external device in the electronic device An object is to provide a method for controlling power provided to electronic devices.

An electronic device according to an embodiment may include a battery, a universal serial bus (USB) connector, a first charging circuit, a second charging circuit, and a processor. The processor according to one embodiment is configured to generate second power of a specified second voltage higher than the first voltage of the battery through the second charging circuit based on identification of the connection of an external electronic device through the USB connector. It can be controlled to be output through a designated pin in relation to the power transmission of the connector. The processor according to one embodiment may obtain information related to an operable voltage of the external electronic device while the second power is output. The processor according to an embodiment stops outputting the second power based on the obtained information and outputs the first power of the first voltage from the battery through the designated pin using the first charging circuit. It can be set to control as much as possible.

A method of controlling power provided to an external electronic device in an electronic device according to an embodiment may include an operation of identifying the connection of the external electronic device through a USB connector. The method according to one embodiment may provide a second power of a specified second voltage higher than the first voltage of the battery through a second charging circuit based on the identification of the connection of the external electronic device in association with power transfer of the USB connector. It can include the operation of outputting through a designated pin. The method according to one embodiment may include obtaining information related to an operable voltage of the external electronic device while the second power is output. The method according to one embodiment stops outputting the second power based on the obtained information and outputs the first power of the first voltage from the battery using the first charging circuit through the designated pin. It may include actions such as:

In a non-volatile storage medium storing instructions according to an embodiment, the instructions are set to cause the electronic device to perform at least one operation when executed by the electronic device, and the at least one operation includes: An operation of identifying the connection of an external electronic device through the identification of the connection of the external electronic device, supplying second power of a specified second voltage higher than the first voltage of the battery through a second charging circuit to the power of the USB connector An operation of outputting through a pin designated in connection with transmission, an operation of obtaining information related to an operable voltage of the external electronic device while the second power is output, and output of the second power based on the obtained information. and outputting first power of the first voltage from the battery through the designated pin using the first charging circuit.

1 is a block diagram of an electronic device in a network environment according to an embodiment.
Figure 2 is a block diagram of an electronic device and an external electronic device according to an embodiment.
FIG. 3 is a flowchart illustrating a control operation of power provided from the electronic device to the external electronic device when the electronic device is connected to the external electronic device, according to an embodiment.
4 shows the voltage when the first power is output of the first voltage from the battery using the second charging circuit after the output of the second power of the second voltage using the first charging circuit through VBUS is stopped in the electronic device according to an embodiment of the present invention. This is a diagram showing a change graph.
FIG. 5A is a diagram for explaining pins of a USB connector according to an embodiment.
Figure 5b is a table illustrating pins of a USB connector according to various embodiments.
FIG. 6 is a diagram illustrating software modules operating in a processor when switching the USB output voltage based on the VID or PID of an external electronic device according to an embodiment.
FIG. 7 shows a case where the second power of the second voltage being provided to the external electronic device is converted to the first power of the first voltage of the external battery based on the VID or PID of the external electronic device in the electronic device according to one embodiment. This is the operation flow chart.
FIG. 8 is a diagram illustrating software modules operating in the processor when switching the USB output voltage based on the lowest operable voltage of the external electronic device obtained through UVDM communication with the external electronic device, according to an embodiment.
9 illustrates converting the second power of the second voltage being provided to the external electronic device into the first power of the first voltage of the external battery based on the lowest voltage information at which the external electronic device can operate in the electronic device according to an embodiment. This is the flowchart of the operation in this case.

Hereinafter, electronic devices according to various embodiments will be looked at with reference to the attached drawings. The term user used in various embodiments may refer to a person using an electronic device or a device (eg, an artificial intelligence electronic device) using the electronic device.

Terms used in this document are merely used to describe specific embodiments and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. All terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field of the present invention. Terms defined in commonly used dictionaries can be interpreted as having the same or similar meaning as the meaning they have in the context of the related technology, and unless clearly defined in this document, they are not interpreted in an ideal or excessively formal sense. . In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of the present invention.

FIG. 1 is a block diagram of an electronic device 101 in a network environment 100 according to an embodiment.

Referring to FIG. 1, in the network environment 100, the electronic device 101 communicates with the electronic device 102 through a first network 198 (e.g., a short-range wireless communication network) or a second network 199. It is possible to communicate with at least one of the electronic device 104 or the server 108 through (e.g., a long-distance wireless communication network). According to one embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108. According to one embodiment, the electronic device 101 includes a processor 120, a memory 130, an input module 150, an audio output module 155, a display module 160, an audio module 170, and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or may include an antenna module 197. In some embodiments, at least one of these components (eg, the connection terminal 178) may be omitted, or one or more other components may be added to the electronic device 101. In some embodiments, some of these components (e.g., sensor module 176, camera module 180, or antenna module 197) are integrated into one component (e.g., display module 160). It can be.

The processor 120, for example, executes software (e.g., program 140) to operate at least one other component (e.g., hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and various data processing or calculations can be performed. According to one embodiment, as at least part of data processing or computation, processor 120 stores commands or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132. The commands or data stored in the volatile memory 132 can be processed, and the resulting data can be stored in the non-volatile memory 134. According to one embodiment, the processor 120 includes the main processor 121 (e.g., a central processing unit or an application processor) or an auxiliary processor 123 that can operate independently or together (e.g., a graphics processing unit, a neural network processing unit ( It may include a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device 101 includes a main processor 121 and a secondary processor 123, the secondary processor 123 may be set to use lower power than the main processor 121 or be specialized for a designated function. You can. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of it.

The auxiliary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (e.g., sleep) state, or while the main processor 121 is in an active (e.g., application execution) state. ), together with the main processor 121, at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) At least some of the functions or states related to can be controlled. According to one embodiment, coprocessor 123 (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module 180 or communication module 190). there is. According to one embodiment, the auxiliary processor 123 (eg, neural network processing device) may include a hardware structure specialized for processing artificial intelligence models. Artificial intelligence models can be created through machine learning. For example, such learning may be performed in the electronic device 101 itself on which the artificial intelligence model is performed, or may be performed through a separate server (e.g., server 108). Learning algorithms may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but It is not limited. An artificial intelligence model may include multiple artificial neural network layers. Artificial neural networks include deep neural network (DNN), convolutional neural network (CNN), recurrent neural network (RNN), restricted boltzmann machine (RBM), belief deep network (DBN), bidirectional recurrent deep neural network (BRDNN), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the examples described above. In addition to hardware structures, artificial intelligence models may additionally or alternatively include software structures.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176) of the electronic device 101. Data may include, for example, input data or output data for software (e.g., program 140) and instructions related thereto. Memory 130 may include volatile memory 132 or non-volatile memory 134.

The program 140 may be stored as software in the memory 130 and may include, for example, an operating system 142, middleware 144, or application 146.

The input module 150 may receive commands or data to be used in a component of the electronic device 101 (e.g., the processor 120) from outside the electronic device 101 (e.g., a user). The input module 150 may include, for example, a microphone, mouse, keyboard, keys (eg, buttons), or digital pen (eg, stylus pen).

The sound output module 155 may output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. Speakers can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 160 can visually provide information to the outside of the electronic device 101 (eg, a user). The display module 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling the device. According to one embodiment, the display module 160 may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of force generated by the touch.

The audio module 170 can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device (e.g., directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102 (e.g., speaker or headphone).

The sensor module 176 detects the operating state (e.g., power or temperature) of the electronic device 101 or the external environmental state (e.g., user state) and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 includes, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 177 may support one or more designated protocols that can be used to connect the electronic device 101 directly or wirelessly with an external electronic device (eg, the electronic device 102). According to one embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102). According to one embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 can convert electrical signals into mechanical stimulation (e.g., vibration or movement) or electrical stimulation that the user can perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 can capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 can manage power supplied to the electronic device 101. According to one embodiment, the power management module 188 may be implemented as at least a part of, for example, a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101. According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

Communication module 190 is configured to provide a direct (e.g., wired) communication channel or wireless communication channel between electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108). It can support establishment and communication through established communication channels. Communication module 190 operates independently of processor 120 (e.g., an application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., : LAN (local area network) communication module, or power line communication module) may be included. Among these communication modules, the corresponding communication module is a first network 198 (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (e.g., legacy It may communicate with an external electronic device 104 through a telecommunication network such as a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or WAN). These various types of communication modules may be integrated into one component (e.g., a single chip) or may be implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module 192 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 can be confirmed or authenticated.

The wireless communication module 192 may support 5G networks after 4G networks and next-generation communication technologies, for example, NR access technology (new radio access technology). NR access technology provides high-speed transmission of high-capacity data (enhanced mobile broadband (eMBB)), minimization of terminal power and access to multiple terminals (massive machine type communications (mMTC)), or ultra-reliable and low-latency (URLLC). -latency communications)) can be supported. The wireless communication module 192 may support high frequency bands (eg, mmWave bands), for example, to achieve high data rates. The wireless communication module 192 uses various technologies to secure performance in high frequency bands, for example, beamforming, massive array multiple-input and multiple-output (MIMO), and full-dimensional multiplexing. It can support technologies such as input/output (FD-MIMO: full dimensional MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., second network 199). According to one embodiment, the wireless communication module 192 supports peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mmTC, or U-plane latency (e.g., 164 dB or less) for realizing URLLC. Example: Downlink (DL) and uplink (UL) each of 0.5 ms or less, or round trip 1 ms or less) can be supported.

The antenna module 197 may transmit or receive signals or power to or from the outside (eg, an external electronic device). According to one embodiment, the antenna module 197 may include an antenna including a radiator made of a conductor or a conductive pattern formed on a substrate (eg, PCB). According to one embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is, for example, connected to the plurality of antennas by the communication module 190. can be selected. Signals or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna. According to some embodiments, in addition to the radiator, other components (eg, radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module 197.

According to one embodiment, the antenna module 197 may form a mmWave antenna module. According to one embodiment, a mmWave antenna module includes a printed circuit board, an RFIC disposed on or adjacent to a first side (e.g., bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., mmWave band); And a plurality of antennas (e.g., array antennas) disposed on or adjacent to the second side (e.g., top or side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( (e.g. commands or data) can be exchanged with each other.

According to one embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the external electronic devices 102 or 104 may be of the same or different type as the electronic device 101. According to one embodiment, all or part of the operations performed in the electronic device 101 may be executed in one or more of the external electronic devices 102, 104, or 108. For example, when the electronic device 101 must perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 may perform the function or service instead of executing the function or service on its own. Alternatively, or additionally, one or more external electronic devices may be requested to perform at least part of the function or service. One or more external electronic devices that have received the request may execute at least part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may process the result as is or additionally and provide it as at least part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology can be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

Figure 2 is a block diagram of an electronic device 201 and an external electronic device 202 according to an embodiment.

Referring to FIG. 2, the electronic device 201 (e.g., the electronic device 101 of FIG. 1) according to an embodiment includes a USB connector 278, a type c port controller 279, and a charging IC (integrated chip) ( 282), direct charging IC 284, battery 289, and processor 220. The electronic device 201 is not limited to this and may be configured to further include various components or may be configured by excluding some of the components. The electronic device 201 according to an embodiment may further include all or part of the electronic device 101 shown in FIG. 1 .

The USB connector 278 according to one embodiment may include physical connection pins for the electronic device 201 and the external electronic device 202 to communicate using the USB method. The USB connector 278 according to one embodiment may include a USB type c plug or a USB type c receptacle.

The type c port controller (or port controller) 279 according to one embodiment may perform power delivery (PD) communication through a configuration channel (CC) pin of the USB connector 278. The port controller 279 according to one embodiment can identify whether to transmit power to the external electronic device 202 or transmit/receive data to/from the external electronic device 202 using the pins of the USB connector 278.

The charging IC (e.g., second charging circuit) 282 according to an embodiment charges the battery 289 using power received wirelessly or wired from the outside or converts power from the battery 289 to a specified second voltage. It can be converted into second power and output through VBUS of the USB connector 278.

The direct charging IC (e.g., first charging circuit) 284 according to an embodiment fast charges the battery 289 with a preset high voltage and/or high current using power received by wire from the outside or charges the battery 289 The first power of the first voltage can be output as is through the USB connector 278 without voltage conversion.

The processor 220 according to one embodiment may perform overall control operations of the electronic device 201. The processor 220 according to one embodiment detects the connection of the external electronic device 202 through the USB connector 278 and sets a voltage higher than the first voltage of the battery 289 through the second charging circuit 282. Power of the second voltage (e.g., second power) can be controlled to be output using a pin (e.g., VBUS path) designated in connection with power transfer of the USB connector 278. The processor 220 according to one embodiment provides operable voltage information of the external electronic device 202 while second power of the specified second voltage is provided through the specified pin (e.g., VBUS pin) of the USB connector 278. You can obtain information related to . According to one embodiment, the information associated with the operable voltage information of the external electronic device 202 includes identification information (e.g., vendor ID (VID) or product ID (PID)) of the external electronic device 202, ) may include information on the lowest operable voltage, a designated response promised between the electronic device 201 and the external electronic device 202 or defined by the vendor, or a PD message. The processor 220 according to an embodiment may include identification information (e.g., VID or PID) of the external electronic device 202, information on the lowest operating voltage of the external electronic device 202, or information between the electronic device 201 and the external electronic device ( 202), the second power of the second voltage being provided to the external electronic device 202 is changed to the first power of the first voltage of the battery 289 based on a specified response or PD message defined by the vendor. You can identify whether to do it or not. If the processor 220 according to an embodiment is identified to change the second power of the second voltage being provided to the external electronic device 202 into the first power of the first voltage of the battery 289 and provide the second charge. To stop providing the second power of the second voltage using the circuit 282 and to control the first charging circuit 284 to provide the first power of the first voltage from the battery 289 using VBUS. You can.

The processor 220 according to one embodiment includes a USB controller 221, a USB driver 222, a USB framework 223, a charger driver 225, a battery service 227, a type c port controller driver 228, and /Or may include USB port manager (229). USB controller (221), USB driver (222), USB framework (223), charger driver (225), battery service (227), type c port controller driver (228), and/or USB port manager according to an embodiment. (229) Each may be a software program module, and at least some of them may be preloaded on the electronic device 101 or downloadable from an external device.

The USB controller 221 according to one embodiment can perform USB data communication using the USB D+/D- Line. The USB driver 222 according to one embodiment can drive the USB controller 221. The USB framework 223 according to the embodiment can provide information necessary for USB data communication performed by the USB controller 221. The charger driver 225 according to one embodiment may drive the charging IC 282 or the direct charging IC 284. Battery service 227 according to one embodiment may perform services related to charging and discharging of the battery 289. The type c port controller driver 228 according to one embodiment can drive the type c port controller 279. The USB port manager 229 according to one embodiment can perform USB port management.

According to one embodiment, when an external electronic device 202 is connected through the USB connector 278, the processor 220 uses the type c port controller driver 228 based on the Rd resistance value of the type c port controller 279. The connection of the external electronic device 202 can be recognized (or detected). The type c port controller driver 228 according to one embodiment can identify whether the electronic device 201 is in the power role or the data role based on recognition of the connection of the external electronic device 202. The type c port controller driver 228 according to one embodiment may provide a Vbus on control signal to the charger driver (or battery driver) 225 when the electronic device 201 is identified as a power role. . The charger driver (or battery driver) 225 according to one embodiment controls the first voltage (e.g., about 3.4V ~) of the battery 289 through the second charging circuit 282 based on the Vbus on signal. A second power of a specified second voltage (e.g., about 5V) higher than about 4.4V can be controlled to be output using a designated pin (e.g., a VBUS path or a VBUS pin) associated with the power delivery of the USB connector 278. You can.

The processor 220 according to one embodiment provides second power through the type c port controller driver 228 and the charger driver (or battery driver) 225 using the VBUS path of the USB connector 278. After outputting, control the host mode to be turned on (or become on) through the USB driver (222), and XHCI (eXtensible Host) is activated based on the host mode being turned on (or turned on). Controller Interface) driver can be executed to perform a USB enumeration process with the external electronic device 202, and identification information (VID and/or PID) of the external electronic device 202 can be obtained during the USB enumeration process. The enumeration process according to one embodiment may be a process of detecting whether the external electronic device 202 is connected to the bus, recognizing the external electronic device 202, and loading an appropriate driver.

The processor 220 according to one embodiment outputs the second power using the VBUS path of the USB connector 278, then performs PD communication through the type c port controller driver 228 and external power through UVDM communication. Information on the lowest voltage at which the electronic device 202 can operate can be obtained.

The processor 220 according to one embodiment is configured to make an appointment between the electronic device 201 and the external electronic device 202 through USB communication or to the vendor while the second power is output using the VBUS path of the USB connector 278. You can receive a designated response or a designated PD message defined in .

The processor 220 according to an embodiment may include identification information (e.g., VID or PID) of the external electronic device 202, information on the lowest operating voltage of the external electronic device 202, or information between the electronic device 201 and the external electronic device ( 202), the second power of the second voltage being provided to the external electronic device 202 is changed to the first power of the first voltage of the battery 289 based on a specified response or PD message defined by the vendor. You can identify whether to do it or not.

The electronic device 201 according to one embodiment further includes a memory (e.g., the memory 130 of FIG. 1) and performs an operation of controlling power provided to the external electronic device 202 using the battery 289. Various data generated during execution of the program 140, including the program being used (eg, the program 140 in FIG. 1), can be stored.

The external electronic device 202 (e.g., the electronic device 102 of FIG. 1) according to an embodiment is connected to the electronic device 201 and performs a designated function while receiving power from the electronic device 201. the go) device. According to one embodiment, the external electronic device 202 may include a speaker, earphone, memory, or a fan, and is a device that is connected to the electronic device 201 via USB and can transmit and receive data while receiving power. Other devices may also be possible. In various embodiments of the present disclosure, an example is provided where the external electronic device 202 is a USB (universal serial bus) audio device (or USB type c earphone or DAC (digital analog converter)).

The external electronic device 202 according to one embodiment may include a USB connector 298, a processor 290, an antenna 293, a radio module 294, a speaker 295, and/or a microphone 296. there is.

The USB connector 298 according to one embodiment may include physical connection pins for the external electronic device 202 to communicate with the electronic device 201 through USB. The USB connector 298 according to one embodiment may include a USB type c plug or a USB type c receptacle.

The processor 290 according to one embodiment may include a USB module 291 and an audio codec 292. The USB module 291 and the audio codec 292 according to one embodiment may be software modules executed by the processor 290. The USB module 291 and the audio codec 292 according to one embodiment may each be included and executed in separate hardware. Audio data can be transmitted and received by performing USB data communication using the USB D+/D- Line while receiving power from the electronic device 201 using the USB VBUS Line through the USB module 291.

According to one embodiment, the processor 290 converts the FM signal received through the antenna 293 into FM audio data through the radio module 294, and transmits the converted FM audio data to the electronic device 201 through USB data communication. It can be transmitted to or output through the speaker 295. According to one embodiment, the processor 290 may record an audio signal received through the microphone 296 and transmit the recorded audio data to the electronic device 201 through USB data communication. According to one embodiment, the processor 290 may reproduce audio data provided from the electronic device 201 through USB data communication using the audio codec 292 and control the audio data to be output through the speaker 295.

According to one embodiment, when the electronic device 201 is connected through the USB connector 298, the processor 290 controls the first voltage of the battery 289 (e.g., about 3.4 V to about 4.4 V) provided from the electronic device 201. The second power of a specified second voltage (e.g., about 5V) higher than V) may be received using the VBUS path.

The processor 290 according to an embodiment performs a USB enumeration process with the electronic device 201 while receiving second power of a second voltage (e.g., about 5V) from the electronic device 201, and externally performs a USB enumeration process in the USB enumeration process. Identification information (VID and/or PID) of the electronic device 202 may be provided to the electronic device 201. The processor 290 according to an embodiment receives the second power of the second voltage (e.g., about 5V) from the electronic device 201 and operates at the lowest possible operating level of the external electronic device 202 through UVDM communication based on PD communication. Voltage information can be transmitted to the electronic device 201. The processor 290 according to one embodiment receives the second power of the second voltage (e.g., about 5V) from the electronic device 201 and is promised between the electronic device 201 and the external electronic device 202 or provided by the vendor. A defined response or a designated PD message can be transmitted to the electronic device 201. Identification information (e.g., VID or PID) of the external electronic device 202 according to an embodiment, information on the lowest voltage at which the external electronic device 202 can operate, or an agreement between the electronic device 201 and the external electronic device 202 Alternatively, a designated response or PD message defined by the vendor may indicate whether the electronic device 201 changes the second power of the second voltage being provided to the external electronic device 202 into the first power of the first voltage of the battery 289 and provides it. It can be used to identify whether

An electronic device (e.g., the electronic device 101 of FIG. 1 or the electronic device 201 of FIG. 2) according to an embodiment includes a battery (e.g., the battery 189 of FIG. 1 or the battery 289 of FIG. 2), USB (universal serial bus) connector (e.g., connection terminal 178 in FIG. 1 or USB connector 278 in FIG. 2), first charging circuit (direct charging IC 284 in FIG. 2), second charging circuit ( It may include a charging IC 282 in FIG. 2), a memory (memory 230 in FIG. 2), and a processor (processor 120 in FIG. 1 or processor 220 in FIG. 2). According to one embodiment, the memory, when executed, generates a specified second voltage higher than the first voltage of the battery through the second charging circuit based on the processor identifying the connection of an external electronic device through the USB connector. The second power may be set to be controlled to be output through a designated pin (eg, VBUS path or VBUS pin) in connection with power delivery of the USB connector. When the memory according to one embodiment is executed, the processor may be set to obtain information related to an operable voltage of the external electronic device while the second power is output. The memory according to one embodiment is, when executed, the processor stops outputting the second power based on the obtained information and uses the first charging circuit to charge the first voltage from the battery. 1 Power can be set to be controlled to be output through the designated pin.

When the memory according to one embodiment is executed, the processor may be set to identify the connection of the external electronic device by detecting a connection through a CC (configuration channel) pin of the USB connector.

The designated pin according to one embodiment may be a VBUS pin.

Information related to the operating voltage of the external electronic device according to an embodiment includes identification information of the external electronic device, information on the lowest operating voltage of the external electronic device, and a promised or designated response between the electronic device and the external electronic device. , or may include a designated power delivery (PD) message.

When the memory according to one embodiment is executed, the processor may be set to obtain the VID and/or PID as identification information of the external electronic device through USB Enumeration with the external electronic device.

When the memory according to one embodiment is executed, the processor may be set to receive information on the lowest operable voltage of the external electronic device through PD communication-based UVDM communication with the external electronic device.

The memory according to an embodiment is such that, when executed, the processor is set to receive a promised or designated response, or a designated power delivery (PD) message between the external electronic device and the external electronic device through USB communication. You can.

When the memory according to an embodiment is executed, the processor recognizes the external electronic device in a state in which the second power is output through the VBUS path of the USB connector, and the recognition of the external electronic device is performed. If it is the first recognition after connection through the CC pin of the USB connector, recognition of the external electronic device may be set to be ignored.

The memory according to one embodiment is, when executed, the processor, if the recognition of the external electronic device is not the first recognition after connection through the CC pin of the USB connector, based on the recognition of the external electronic device, the external electronic device It can be set to perform the functions of the device.

The external electronic device according to one embodiment may be an on the go (OTG) device. The external electronic device according to one embodiment may include a USB audio device, a USB type c earphone, or a digital analog converter (DAC).

FIG. 3 is a flowchart illustrating a control operation of power provided from the electronic device to the external electronic device when the electronic device is connected to the external electronic device, according to an embodiment.

Referring to FIG. 3, a processor (e.g., processor 120 of FIG. 1, FIG. 2) of an electronic device (e.g., electronic device 101 of FIG. 1 or electronic device 201 of FIG. 2) according to an embodiment. The processor 220 may perform at least one of operations 310 to 330.

In operation 310, the processor 220 according to an embodiment charges the first charge of the battery 289 through the second charging circuit 282 based on detection of the connection of the external electronic device 202 through the USB connector 278. The second power of the designated second voltage higher than the voltage can be controlled to be output using the VBUS path of the USB connector 278.

In operation 320, the processor 220 according to an embodiment may receive operable voltage information (e.g., an external external device) of the external electronic device 202 while second power of a specified second voltage is provided through VBUS of the USB connector 278. Information related to the lowest operating voltage information of the electronic device 202 can be obtained. According to one embodiment, the information associated with the lowest voltage information at which the external electronic device 202 can operate may include identification information of the external electronic device 202 (e.g., vendor ID (VID) or product ID (PID)), external electronic device ( 202) may include information on the lowest operable voltage, a designated response promised between the electronic device 201 and the external electronic device 202 or defined by the vendor, or a PD message. The processor 220 according to an embodiment may include identification information (e.g., VID or PID) of the external electronic device 202, the lowest operating voltage of the external electronic device 202, or the electronic device 201 and the external electronic device 202. ) or whether to change the second power of the second voltage being provided to the external electronic device 202 into the first power of the first voltage of the battery 289 and provide it based on a specified response or PD message defined by the vendor or can be identified.

In operation 330, the processor 220 according to an embodiment provides second power of a second voltage using the first charging circuit 282 based on information associated with the operable voltage information of the external electronic device 202. It is possible to stop and use the second charging circuit 284 to control the first power of the first voltage from the battery 289 to be output using VBUS. The processor 220 according to an embodiment uses the second power of the second voltage being provided to the external electronic device 202 based on information related to the lowest operable voltage information of the external electronic device 202 to the battery 289. If it is identified to change and provide the first power of the first voltage, the provision of the second power of the second voltage using the second charging circuit 282 is stopped and the battery 289 is supplied using the first charging circuit 284. The first power of the first voltage from can be controlled to be provided using VBUS.

A method of controlling power provided to an external electronic device in an electronic device (e.g., the electronic device 101 of FIG. 1 or the electronic device 201 of FIG. 2) according to an embodiment uses a USB connector (e.g., a connection terminal of FIG. 1 ( 178) or an operation of identifying the connection of the external electronic device through the USB connector 278 of FIG. 2. The method according to one embodiment is based on identifying the connection of the external electronic device by charging the battery (battery 189 in FIG. 1 or the battery (in FIG. 2) through a second charging circuit (charging IC 282 in FIG. 2). 289)) may include outputting second power of a designated second voltage higher than the first voltage of the USB connector through a designated pin (eg, a VBUS path or a VBUS pin) associated with power transfer of the USB connector. The method according to one embodiment may include obtaining information related to an operable voltage of the external electronic device while the second power is output. The method according to one embodiment stops output of the second power based on the obtained information and uses the first charging circuit (direct charging IC 284 in FIG. 2) to charge the first voltage from the battery. It may include an operation of outputting the first power of through the designated pin.

In the method according to one embodiment, the pin designated in connection with the power transfer may be a VBUS pin.

The method according to one embodiment may include an operation of identifying the connection of the external electronic device by detecting a connection through a CC (configuration channel) pin of the USB connector.

In the method according to one embodiment, the information associated with the operating voltage of the external electronic device includes identification information of the external electronic device, information on the lowest operating voltage of the external electronic device, and an agreement between the electronic device and the external electronic device. may include a designated response, or a designated power delivery (PD) message.

The method according to an embodiment may include obtaining a VID and/or PID as identification information of the external electronic device by performing USB enumeration with the external electronic device.

The method according to one embodiment may include receiving information on the lowest operable voltage of the external electronic device through PD communication-based UVDM communication with the external electronic device.

The method according to an embodiment may include receiving a promised or designated response, or a designated power delivery (PD) message between the external electronic device and the external electronic device through USB communication.

The method according to an embodiment includes recognizing the external electronic device while the second power is output through the VBUS path of the USB connector. and an operation of ignoring the recognition of the external electronic device if the recognition of the external electronic device is the first recognition after connection through the CC pin of the USB connector.

The method according to an embodiment includes performing a function of the external electronic device based on recognition of the external electronic device if the recognition of the external electronic device is not the first recognition after connection through the CC pin of the USB connector. can do.

In the method according to one embodiment, the external electronic device is an on the go (OTG) device and may include a USB audio device, a USB type c earphone, or a digital analog converter (DAC).

4 shows the voltage when the first power is output of the first voltage from the battery using the second charging circuit after the output of the second power of the second voltage using the first charging circuit through VBUS is stopped in the electronic device according to an embodiment of the present invention. This is a diagram showing a change graph.

Referring to FIG. 4, in the voltage change graph 400 according to an embodiment, the horizontal axis may represent time (m (minutes): ss (seconds)), and the vertical axis may represent voltage (V). It can be expressed.

The processor 220 according to one embodiment uses the second charging circuit 282 to output the second power of the second voltage (approximately 5V) 410 and the first charging circuit 284. A section 430 in which the voltage drops rapidly may occur between the sections 420 in which the first power of the first voltage (eg, about 3V) is output from the battery.

The processor 220 according to an embodiment may identify that the external electronic device 202 is disconnected in the section 430 where the voltage rapidly decreases, and the first voltage from the battery (e.g., about 3V) As the first power is output, the connection of the external electronic device 202 can be re-recognized.

The processor 220 according to an embodiment outputs second power 410 at a second voltage (approximately 5V) using the second charging circuit 282 and simultaneously outputs second power 410 with the external electronic device 202 through USB communication. While performing an OTG function (e.g., music playback function), output of the second power is stopped based on information associated with the lowest operable voltage information of the external electronic device 202 and the battery is discharged using the first charging circuit 284. When the first power of the first voltage (e.g., about 3V) is output 420, the external electronic device 202 and Performance of the music playback function through USB communication may also be interrupted.

The processor 220 according to an embodiment converts the output of the second power of the second voltage using the second charging circuit 282 to the output of the first power of the first voltage using the first charging circuit 284. OTG functions (e.g., music playback functions) performed through USB communication with the external electronic device 202 can be processed without interruption.

According to one embodiment, as the external electronic device 202 is connected (e.g., connected through a CC pin), the processor 220 uses the second charging circuit 282 to charge the second voltage (approximately: 5V). By performing a USB enumeration operation while outputting power through the USB connector 278, the external electronic device 202 can be recognized and information related to the operable voltage information of the external electronic device 202 can be obtained. According to one embodiment, the processor 220 collects information associated with the operable voltage information of the external electronic device 202 (e.g., identification information (e.g., VID or PID) of the external electronic device 202 or information related to the operable voltage information of the external electronic device 202. The second power of the second voltage being output based on the lowest operable voltage or a response or PD message promised between the electronic device 201 and the external electronic device 202 or specified by the vendor is supplied to the second power of the battery 289. It is possible to identify whether to change to the first power of 1 voltage and output it. According to one embodiment, when the processor 220 is identified to change the second power of the second voltage being output into the first power of the first voltage of the battery 289 and output the external electronic device 202 through the enumeration operation. ) can be identified as the first recognition of the external electronic device 202 after connection through the CC pin of the external electronic device 202. According to one embodiment, if the processor 220 recognizes the external electronic device 202 for the first time after connection through the CC pin of the external electronic device 202, the processor 220 does not transmit the external electronic device 202 recognition event to the USB host manager. 2 Stop providing the second power of the second voltage using the charging circuit 282 (Vbus on) and supply the first power of the first voltage from the battery 289 using the first charging circuit 284 to VBUS. You can control it to be provided using (reverse bypass on).

FIG. 5A is a diagram for explaining pins of a USB connector according to an embodiment.

Referring to FIG. 5A, the USB connector 278 (e.g., the connection terminal 178 in FIG. 1) according to one embodiment may be a USB type c connector. USB connector 278 may include multiple pins. The USB connector 278 according to one embodiment has a plurality of first pins on a first side (e.g., side A) corresponding to the forward direction and a plurality of first pins on a second side (e.g., side B) corresponding to the reverse direction. It may include second pins. For example, the plurality of first pins are GND pin (511a), TX1+ pin (512a), TX1-pin (513a), VBUS pin (514a), CC pin (515a), Dp1 pin (516a), and Dn1 pin ( 517a), SBU1 pin (518a) pin, VBUS pin (519a), RX2-pin (520a), RX2+ pin (521a), and GND pin (522a). For example, the plurality of second pins are GND pin (511b), TX2+ pin (512b), TX2-pin (513b), VBUS pin (514b), VCONN pin (515b), Dp1 pin (516b), and Dn1 pin ( 517b), SBU2 pin (518b), VBUS pin (519b), RX1-pin (520b), RX1+ pin (521b), and GND pin (522b).

The electronic device 201 according to one embodiment may be electrically connected to the external electronic device 202 through the USB connector 278. The USB connector 278 according to one embodiment may be shaped so that the USB connector 298 of the external electronic device 202 can be plugged in either the forward or reverse direction. For example, an arrangement of twelve pins formed on the first side (e.g., side A) so that the USB connector 298 of the external electronic device 202 can be plugged in either the first side or the second side. The order may be the same as the arrangement order of the twelve pins formed on the second side (eg, side B). Due to this structure, the user can insert the connector 298 of the external electronic device 202 into the connector 278 of the electronic device 201 while rotating it by 180 degrees. According to one embodiment, a plurality of pins may be formed on the first side (eg, side A) and the second side (eg, side B) of the contact board formed inside the USB connector 278.

Figure 5b is a table illustrating pins of a USB connector according to various embodiments.

Referring to Figure 5b, the TX1+ pin and TX2+ pin (512a, 512b) and the TX1-pin and TX2-pin (513a, 513b) may be pins for super speed transmission (super speed TX) capable of fast data transmission. , the VBUS pins 514a and 514b may be pins for transmitting power from the electronic device 201 to the external electronic device 202, the CC pin 515a may be a pin that serves as an identification terminal, and the VCONN pin (515b) may be a pin for supporting plug power, Dp1 pins (516a, 516b) and Dn1 pins (517a, 517b) may be pins for different bidirectional USB signals, and SBU1 pin and SBU2 pin (518a, 518b) is a spare pin that can be used for various signals (e.g., audio signals, display signals, etc.), and includes RX2-pin and RX1-pin (520a, 520b), RX2+ pin and RX1+ pin (521a, 521b) may be pins for super speed RX, which allows fast reception of data. The electronic device 201 and/or the external electronic device 202 connected to the USB type c connector according to one embodiment may determine whether to operate in host mode or client mode through communication using the CC pin. there is. According to one embodiment, the electronic device 201 and/or the external electronic device 202 may determine whether to enter host mode or client mode using the Rp/Rd resistor connected to the CC pin.

FIG. 6 is a diagram illustrating software modules operating in a processor when switching the USB output voltage based on the VID or PID of an external electronic device according to an embodiment.

Referring to FIG. 6, software modules operating on the processor 220 according to one embodiment include type c port controller driver (228), USB driver (222), XHCI driver (261), Hub driver (261), and Auido class. It may include driver (263), USB host manager (264), USB alsa manager (265), and/or pcm0 (266), and may further include other software modules. type c port controller driver (228), USB driver (222), XHCI driver (261), Hub driver (261), Audio class driver (263), USB host manager (264), USB alsa manager ( At least some of 265), and pcm0 266 may be included and operated in separate hardware.

The type c port controller driver 228 according to one embodiment detects the connection of the external electronic device 202 (e.g., connection through the cc pin) to the USB connector 278, thereby controlling the power roll of the electronic device 201. A power role and/or a data role can be identified (or determined). The type c port controller driver 228 according to one embodiment determines whether the power roll of the electronic device 201 is a roll that performs charging or a source (or roll) that provides power, and determines whether the power roll of the electronic device 201 is a roll that performs charging or a source (or roll) that provides power. Based on identification as a source, a Vbus on control signal can be transmitted to the battery driver (267). The type c port controller driver 228 according to one embodiment may transmit a Vbus on signal and a reverse bypass off signal to the battery driver 267. According to one embodiment, the battery driver 267 provides a designated second voltage higher than the first voltage of the battery 289 through the second charging circuit 282 based on the Vbus on signal (or Vbus on signal and reverse bypass off signal). The second power of the voltage can be controlled to be output through the VBUS path.

The type c port controller driver 228 according to one embodiment determines whether the data role of the electronic device 201 is a host or a client, and connects the USB driver 222 based on the data role of the electronic device 201 being identified as a host. This can be announced.

The USB driver 222 according to one embodiment may call the XHCI driver 261 so that the electronic device 201 can operate as a USB host based on the data role of the electronic device 201 being determined as a host.

The XHCI driver 261 according to one embodiment can drive a host controller, set registers, and perform USB enumeration based on specifications for operating as a USB host.

The hub driver 262 according to one embodiment performs USB enumeration while the second power of the second voltage (approximately 5V) is output through the USB connector 278 using the second charging circuit 282. Based on this, the external electronic device 202 can be recognized and information related to the operable voltage information of the external electronic device 202 can be obtained. According to one embodiment, the hub driver 262 is outputting information based on information associated with the operable voltage information of the external electronic device 202 (e.g., identification information (e.g., VID or PID) of the external electronic device 202). It is possible to identify whether to change the second power of the second voltage into the first power of the first voltage of the battery 289 and output it. According to one embodiment, when the hub driver 262 is identified to change the second power of the second voltage being output to the first power of the first voltage of the battery 289 and output it, an external electronic device through the enumeration operation ( It can be identified whether the recognition of 202) is the first recognition of the external electronic device 202 after connection through the CC pin of the external electronic device 202. According to one embodiment, if the hub driver 262 recognizes the first external electronic device 202 after connection through the CC pin of the external electronic device 202, it sends the external electronic device 202 recognition event to the audio class driver 263 and /Or it can be ignored without being forwarded to the USB host manager (264). According to one embodiment, the hub driver 262 stops providing the second power of the second voltage using the second charging circuit 282 (Vbus off) and uses the first charging circuit 284 to charge the battery 289. A signal allowing the first power of the first voltage from to be provided (reverse bypass on) using VBUS may be transmitted to the battery driver 267. The battery driver 267 according to one embodiment stops outputting the second power of the second voltage through the second charging circuit 282 based on the Vbus off signal (or Vbus off signal and reverse bypass on signal) and 1 The first power of the first voltage of the battery 289 through the charging circuit 284 can be controlled to be output to the VBUS path.

According to one embodiment, the hub driver (262) sends the external electronic device (202) recognition event to the audio class driver (263) if the external electronic device (202) is not recognized for the first time after connection through the CC pin of the external electronic device (202). And/or it can be delivered to the USB host manager (264). In the present disclosure, according to one embodiment, an example in which the external electronic device 202 is a USB audio device and the audio class driver 263 operates is described, but the external electronic device 202 is an external electronic device recognized through a descriptor ( 202) If the device is a different device (e.g. memory or a fan or other OTG device), a different class driver may operate.

The audio class driver 263 according to one embodiment may request audio data to be transmitted to the external electronic device 202 from the USB host manager 264.

The USB host manager 264 according to one embodiment processes audio data to be transmitted to the external electronic device 202 using the USB alsa (advanced linux sound architecture) manager 265 and sends it to pcm0 266 (e.g., buffer module). ) can be controlled to save it.

The audio class driver 263 according to one embodiment may acquire audio data stored in pcm0 266 (e.g., buffer module) and transmit it to the hub driver 262. Hub driver (262) according to one embodiment controls audio data to be output to the USB connector (278) through a downstream port through the XHCI driver (261), USB driver (222), and type c port controller driver (228). can do.

As described above, the hub driver 262 according to one embodiment only performs voltage conversion when recognizing the first external electronic device 202 after connection through the CC pin of the external electronic device 202, and connects through the CC pin. In the maintained state, the audio class driver (263) and/or USB host manager (264) are operated when the external electronic device (202) is recognized for the first time, thereby enabling the audio class driver (263) and/or USB host manager (264) OTG function performance interruption phenomenon can be prevented by converting the operating voltage.

FIG. 7 shows a case where the second power of the second voltage being provided to the external electronic device is converted to the first power of the first voltage of the external battery based on the VID or PID of the external electronic device in the electronic device according to one embodiment. This is the operation flow chart.

Referring to FIG. 7, a processor (e.g., processor 120 of FIG. 1, FIG. 2) of an electronic device (e.g., electronic device 101 of FIG. 1 or electronic device 201 of FIG. 2) according to an embodiment. The processor 220 may perform at least one of operations 710 to 770.

In operation 710, the processor 220 according to an embodiment may identify the connection of the external electronic device 202 to the USB connector 278. The processor 220 according to one embodiment detects the connection through the CC pin as the USB plug of the external electronic device 202 (e.g., USB earphone) is inserted into the USB connector 278 (e.g., USB receptacle), thereby detecting the external connection. The connection of the electronic device 202 can be identified.

In operation 720, the processor 220 according to an embodiment changes Vbus to the on state as the external electronic device 202 is connected (e.g., connected through a CC pin) to charge the first charger through the second charging circuit 282. Second power of 2 voltage (approximately: 5V) can be output through the USB connector 278. According to one embodiment, the operation of changing Vbus to the on state may mean the operation of activating the Vbus pin.

In operation 730, the processor 220 according to an embodiment may perform a USB enumeration operation to recognize the external electronic device 202 and obtain the VID and/or PID of the external electronic device 202.

In operation 740, the processor 220 according to an embodiment determines whether to change the second power of the second voltage being output into the first power of the first voltage of the battery 289 and output it based on the VID and/or PID. can be identified. According to one embodiment, the processor 220 may identify whether the obtained VID and/or PID corresponds to an external electronic device capable of operating at a first voltage lower than the second voltage.

In operation 750, when the processor 220 according to an embodiment is identified to change the second power of the second voltage being output into the first power of the first voltage of the battery 289 and output the external power through the enumeration operation. It can be identified whether the recognition of the electronic device 202 is the first recognition of the external electronic device 202 after connection through the CC pin of the external electronic device 202.

In operation 760, the processor 220 according to an embodiment recognizes the first external electronic device 202 after the recognition of the external electronic device 202 through the enumeration operation is connected through the CC pin of the external electronic device 202. In this case, the external electronic device 202 recognition event can be ignored without being transmitted to the USB host manager.

In operation 770, the processor 220 according to an embodiment stops providing the second power of the second voltage using the second charging circuit 282 (Vbus off) and uses the first charging circuit 284 to charge the battery. The first power of the first voltage from 289 can be controlled to be provided (reverse bypass on) using VBUS.

The processor 220 according to one embodiment may proceed to operation 730 after operation 770 and re-perform the USB enumeration operation to re-recognize the external electronic device 202. The processor 220 according to an embodiment performs re-recognition while the first power of the first voltage from the battery 289 is provided using VBUS (reverse bypass on), so the OTG function is interrupted due to voltage conversion. can be prevented.

FIG. 8 is a diagram illustrating software modules operating in the processor when switching the USB output voltage based on the lowest operable voltage of the external electronic device obtained through UVDM communication with the external electronic device, according to an embodiment.

Referring to FIG. 8, software modules operating in the processor 220 according to one embodiment include type c port controller driver (228), USB driver (222), XHCI driver (261), Hub driver (261), and Audio class. It may include driver (263), USB host manager (264), USB alsa manager (265), pcm0 (266), and/or UVDM app (268), and may further include other software modules. In one embodiment, type c port controller driver (228), USB driver (222), XHCI driver (261), Hub driver (261), Audio class driver (263), USB host manager (264), USB alsa manager (265) ), pcm0 (266), and at least a portion of UVDM app (268) may be included and operated in separate hardware in addition to the processor 220.

The type c port controller driver 228 according to one embodiment detects the connection of the external electronic device 202 (e.g., connection through the cc pin) to the USB connector 278, thereby controlling the power roll of the electronic device 201. A power role and/or a data role can be identified (or determined). The type c port controller driver 228 according to one embodiment determines whether the power roll of the electronic device 201 is a roll that performs charging or a source (or roll) that provides power, and determines whether the power roll of the electronic device 201 is a roll that performs charging or a source (or roll) that provides power. Based on identification as a source, a Vbus on control signal can be transmitted to the battery driver (267). The type c port controller driver 228 according to one embodiment may transmit a Vbus on signal and a reverse bypass off signal to the battery driver 267. According to one embodiment, the battery driver 267 provides a designated second voltage higher than the first voltage of the battery 289 through the second charging circuit 282 based on the Vbus on signal (or Vbus on signal and reverse bypass off signal). The second power of the voltage can be controlled to be output through the VBUS path.

The type c port controller driver 228 according to an embodiment causes the second power of the second voltage to be output through the VBUS path, connects PD communication with the external electronic device 202, activates the UVDM app 268, and UVDM PD communication-based UVDM communication can be performed with the external electronic device 202 through the app 268. The type c port controller driver 228 according to one embodiment may check (or receive) information on the lowest operating voltage of the external electronic device 202 from the external electronic device 202 through UVDM communication. According to one embodiment, the type c port controller driver 228 applies the second power of the second voltage being output to the first power of the battery 289 based on the obtained information on the lowest operating voltage of the external electronic device 202. It is possible to identify whether to change the voltage to the first power and output it. According to one embodiment, the type c port controller driver 228 supplies the second power of the second voltage being output to the battery 289 when the lowest operating voltage of the external electronic device 202 is lower than the first voltage of the battery 289. ) can be identified as being changed to the first power of the first voltage and output. According to one embodiment, the type c port controller driver 228 stops providing the second power of the second voltage using the second charging circuit 282 (Vbus off) and uses the first charging circuit 284 to charge the battery. A signal allowing the first power of the first voltage from 289 to be provided (reverse bypass on) using VBUS may be transmitted to the battery driver 267. The battery driver 267 according to one embodiment stops outputting the second power of the second voltage through the second charging circuit 282 based on the Vbus off signal (or Vbus off signal and reverse bypass on signal) and 2 The first power of the first voltage of the battery 289 through the charging circuit 284 can be controlled to be output to the VBUS path.

The type c port controller driver 228 according to one embodiment determines whether the data role of the electronic device 201 is a host or a client, and connects the USB driver 222 based on the data role of the electronic device 201 being identified as a host. This can be announced. The USB driver 222 according to one embodiment may call the XHCI driver 261 so that the electronic device 201 can operate as a USB host based on the data role of the electronic device 201 being determined as a host. The XHCI driver 261 according to one embodiment can drive a host controller, set registers, and perform USB enumeration based on specifications for operating as a USB host.

The hub driver 262 according to one embodiment performs USB enumeration while the second power of the second voltage (approximately 5V) is output through the USB connector 278 using the second charging circuit 282. Based on this, the external electronic device 202 can be recognized. According to one embodiment, when the hub driver 262 is identified to change the second power of the second voltage being output to the first power of the first voltage of the battery 289 and output it, an external electronic device through the enumeration operation ( It can be identified whether the recognition of 202) is the first recognition of the external electronic device 202 after connection through the CC pin of the external electronic device 202. According to one embodiment, if the hub driver 262 recognizes the first external electronic device 202 after connection through the CC pin of the external electronic device 202, it sends the external electronic device 202 recognition event to the audio class driver 263 and /Or it can be ignored without being forwarded to the USB host manager (264).

According to one embodiment, the hub driver (262) sends the external electronic device (202) recognition event to the audio class driver (263) if the external electronic device (202) is not recognized for the first time after connection through the CC pin of the external electronic device (202). And/or it can be delivered to the USB host manager (264).

The audio class driver 263 according to one embodiment may request audio data to be transmitted to the external electronic device 202 from the USB host manager 264.

The USB host manager 264 according to one embodiment processes audio data to be transmitted to the external electronic device 202 using the USB alsa (advanced linux sound architecture) manager 265 and sends it to pcm0 266 (e.g., buffer module). ) can be controlled to save it.

The audio class driver 263 according to one embodiment may acquire audio data stored in pcm0 266 (e.g., buffer module) and transmit it to the hub driver 262. Hub driver (262) according to one embodiment controls audio data to be output to the USB connector (278) through a downstream port through the XHCI driver (261), USB driver (222), and type c port controller driver (228). can do.

9 illustrates converting the second power of the second voltage being provided to the external electronic device into the first power of the first voltage of the external battery based on the lowest voltage information at which the external electronic device can operate in the electronic device according to an embodiment. This is the flowchart of the operation in this case.

Referring to FIG. 9, a processor (e.g., processor 120 of FIG. 1, FIG. 2) of an electronic device (e.g., electronic device 101 of FIG. 1 or electronic device 201 of FIG. 2) according to an embodiment. The processor 220) may perform at least one of operations 910 to 970.

In operation 910, the processor 220 according to an embodiment may identify the connection of the external electronic device 202 to the USB connector 278. The processor 220 according to one embodiment detects the connection through the CC pin as the USB plug of the external electronic device 202 (e.g., USB earphone) is inserted into the USB connector 278 (e.g., USB receptacle), thereby detecting the external connection. The connection of the electronic device 202 can be identified.

In operation 920, the processor 220 according to an embodiment turns on (or changes to the on state) Vbus as the external electronic device 202 is connected (e.g., connected through a CC pin) to charge the second charging circuit ( 282), the second power of the second voltage (approximately 5V) can be output through the USB connector 278.

In operation 930, the processor 220 according to an embodiment may obtain information on the lowest operating voltage of the external electronic device 202 through UVDM communication based on PD communication with the external electronic device 202.

In operation 940, the processor 220 according to an embodiment converts the second power of the second voltage being output to the first power of the first voltage of the battery 289 based on information on the lowest operable voltage of the external electronic device 202. You can identify whether to output by changing to 1 power. According to one embodiment, when the lowest operating voltage of the external electronic device 202 is lower than the first voltage of the battery 289, the processor 220 applies the second power of the second voltage being output to the first voltage of the battery 289. It can be identified that the voltage is changed to the first power and output.

In operation 950, when the processor 220 according to an embodiment is identified to change the second power of the second voltage being output into the first power of the first voltage of the battery 289 and output the external power through the enumeration operation. It can be identified whether the recognition of the electronic device 202 is the first recognition of the external electronic device 202 after connection through the CC pin of the external electronic device 202.

In operation 960, the processor 220 according to an embodiment recognizes the first external electronic device 202 after the recognition of the external electronic device 202 through the enumeration operation is connected through the CC pin of the external electronic device 202. In this case, the external electronic device 202 recognition event can be ignored without being transmitted to the USB host manager.

In operation 970, the processor 220 according to an embodiment stops providing the second power of the second voltage using the second charging circuit 282 (Vbus off) and uses the first charging circuit 284 to charge the battery. The first power of the first voltage from 289 can be controlled to be provided (reverse bypass on) using VBUS.

The processor 220 according to an embodiment may proceed to operation 930 after operation 970 and re-perform the USB enumeration operation to re-recognize the external electronic device 202. The processor 220 according to one embodiment performs re-recognition while the first power of the first voltage from the battery 289 is provided using VBUS (reverse bypass on), so the OTG function is interrupted due to voltage conversion. can be prevented.

An electronic device according to an embodiment disclosed in this document may be of various types. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of this document are not limited to the above-described devices.

An embodiment of this document and the terms used herein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various changes, equivalents, or substitutes for the embodiment. In connection with the description of the drawings, similar reference numbers may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the above items, unless the relevant context clearly indicates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one component from another, and to refer to those components in other respects (e.g., importance or order) is not limited. One (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.” Where mentioned, it means that any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.

The term “module” used in one embodiment of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as logic, logic block, component, or circuit, for example. can be used A module may be an integrated part or a minimum unit of the parts or a part thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

An embodiment of this document is a storage medium (e.g., built-in memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101 or electronic device 301). ) may be implemented as software (e.g., program 140) including one or more instructions stored in . For example, a processor (e.g., processor 520) of a device (e.g., electronic device 301) may call at least one command among one or more commands stored from a storage medium and execute it. This allows the device to be operated to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves). This term refers to cases where data is stored semi-permanently in the storage medium. There is no distinction between temporary storage cases.

According to one embodiment, a method according to an embodiment disclosed in this document may be provided and included in a computer program product. Computer program products are commodities and can be traded between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)) or through an application store (e.g. Play StoreTM) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

According to an embodiment of the present disclosure, in a non-volatile storage medium storing instructions, the instructions are set to cause the electronic device to perform at least one operation when executed by the electronic device, and the at least one operation is , an operation of identifying the connection of an external electronic device through a USB connector, and based on the identification of the connection of the external electronic device, supplying second power of a specified second voltage higher than the first voltage of the battery through a second charging circuit to the USB An operation of outputting through a designated pin (e.g., VBUS path or VBUS pin) in relation to power transfer of a connector, and an operation of obtaining information related to an operable voltage of the external electronic device while the second power is output. and stopping output of the second power based on the obtained information and outputting first power of the first voltage from the battery through the designated pin using the first charging circuit. .

According to one embodiment, each component (e.g., module or program) of the above-described components may include a single or multiple entities, and some of the multiple entities may be separately placed in other components. . According to one embodiment, one or more of the above-described corresponding components or operations may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component of the plurality of components prior to the integration. . According to one embodiment, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or , or one or more other operations may be added.

Claims (20)

In an electronic device (101 in FIG. 1 or 201 in FIG. 2),
Battery (189 in Figure 1 or 289 in Figure 2);
universal serial bus (USB) connector (178 in FIG. 1 or 278 in FIG. 2);
First charging circuit (284 in FIG. 2);
second charging circuit (282 in FIG. 2);
Memory (230 in FIG. 2); and
Comprising a processor (120 in FIG. 1 or 220 in FIG. 2),
The memory, when executed, the processor,
Based on the identification of the connection of an external electronic device through the USB connector, a second power of a specified second voltage higher than the first voltage of the battery is transmitted through the second charging circuit to a specified pin in connection with power transfer of the USB connector. Control it to be output through,
Obtain information associated with an operable voltage of the external electronic device while the second power is output,
Stop outputting the second power based on the obtained information,
An electronic device that stores instructions set to control the first power of the first voltage from the battery to be output through the designated pin using the first charging circuit.
According to paragraph 1,
When executed, the instructions cause the processor to:
It is set to identify the connection of the external electronic device by detecting a connection through a CC (configuration channel) pin of the USB connector,
An electronic device wherein the pin designated in connection with the power transfer is a VBUS pin.
According to claim 1 or 2,
Information related to the operable voltage of the external electronic device may include identification information of the external electronic device, information on the lowest operable voltage of the external electronic device, a response promised or specified between the electronic device and the external electronic device, or a designated PD ( An electronic device that contains a power delivery message.
According to any one of claims 1 to 3,
When the instructions are executed, the processor,
An electronic device configured to obtain VID and/or PID as identification information of the external electronic device by performing USB Enumeration with the external electronic device.
According to any one of claims 1 to 4,
When the instructions are executed, the processor,
An electronic device configured to receive information on the lowest operable voltage of the external electronic device through PD communication-based UVDM communication with the external electronic device.
According to any one of claims 1 to 5,
When the instructions are executed, the processor,
An electronic device configured to receive a promised or designated response, or a designated power delivery (PD) message between the external electronic device and the external electronic device through USB communication.
According to any one of claims 1 to 6,
When the instructions are executed, the processor,
If the external electronic device is recognized while the second power is output through the designated pin of the USB connector, and the recognition of the external electronic device is the first recognition after connection through the CC pin of the USB connector, the external electronic device An electronic device set to ignore recognition of the device.
According to any one of claims 1 to 7,
When the instructions are executed, the processor,
An electronic device configured to perform the function of the external electronic device based on recognition of the external electronic device if the recognition of the external electronic device is not the first recognition after connection through the CC pin of the USB connector.
According to any one of claims 1 to 8,
The external electronic device is an electronic device that is an OTG (on the go) device.
According to any one of claims 1 to 9,
The external electronic device is an electronic device including a USB audio device, a USB type c earphone, or a digital analog converter (DAC).
In a method of controlling power provided from an electronic device (101 in FIG. 1 or 201 in FIG. 2) to an external electronic device,
Identifying the connection of the external electronic device through a universal serial bus (USB) connector (178 in FIG. 1 or 278 in FIG. 2);
Based on the connection of the external electronic device being identified, second power of a specified second voltage higher than the first voltage of the battery (189 in FIG. 1 or 289 in FIG. 2) is supplied through the second charging circuit (282 in FIG. 2). An operation of outputting power through a designated pin in relation to power transmission of the USB connector;
Obtaining information related to an operable voltage of the external electronic device while the second power is output; and
An operation of stopping output of the second power based on the obtained information and outputting the first power of the first voltage from the battery using the first charging circuit (284 in FIG. 2) through the designated pin. How to include .
According to clause 11,
An operation of identifying the connection of the external electronic device by detecting a connection through a CC (configuration channel) pin of the USB connector,
A method wherein the pin designated in connection with power transfer is a VBUS pin.
According to claim 11 or 12,
Information related to the operable voltage of the external electronic device may include identification information of the external electronic device, information on the lowest operable voltage of the external electronic device, a response promised or specified between the electronic device and the external electronic device, or a designated PD ( How to include a power delivery) message.
According to any one of claims 11 to 13,
A method comprising acquiring a VID and/or PID as identification information of the external electronic device by performing USB enumeration with the external electronic device.
According to any one of claims 11 to 14,
A method comprising receiving information on the lowest operable voltage of the external electronic device through UVDM communication based on PD communication with the external electronic device.
According to any one of claims 11 to 15,
A method comprising receiving a promised or designated response, or a designated power delivery (PD) message between the external electronic device and the external electronic device through USB communication.
According to any one of claims 11 to 16,
Recognizing the external electronic device while the second power is output through the designated pin of the USB connector; and
A method comprising ignoring the recognition of the external electronic device if the recognition of the external electronic device is the first recognition after connection through the CC pin of the USB connector.
According to any one of claims 11 to 17,
A method comprising performing a function of the external electronic device based on recognition of the external electronic device if the recognition of the external electronic device is not the first recognition after connection through the CC pin of the USB connector.
According to any one of claims 11 to 18,
The external electronic device is an OTG (on the go) device and includes a USB audio device, USB type c earphone, or DAC (digital analog converter).
A non-volatile storage medium storing instructions, wherein the instructions are set to cause the electronic device to perform at least one operation when executed by the electronic device, the at least one operation being:
An operation of identifying the connection of an external electronic device through a USB (universal serial bus) connector (178 in FIG. 1 or 278 in FIG. 2);
Based on the connection of the external electronic device being identified, second power of a specified second voltage higher than the first voltage of the battery (189 in FIG. 1 or 289 in FIG. 2) is supplied through the second charging circuit (282 in FIG. 2). An operation of outputting power through a designated pin in relation to power transmission of the USB connector;
Obtaining information related to an operable voltage of the external electronic device while the second power is output; and
An operation of stopping output of the second power based on the obtained information and outputting the first power of the first voltage from the battery using the first charging circuit (284 in FIG. 2) through the designated pin. A storage medium containing .

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