WO2023061333A1

WO2023061333A1 - Bleeder circuit control method and apparatus, bleeder device, and electronic device

Info

Publication number: WO2023061333A1
Application number: PCT/CN2022/124425
Authority: WO
Inventors: 谢亚兵
Original assignee: 维沃移动通信有限公司
Priority date: 2021-10-12
Filing date: 2022-10-10
Publication date: 2023-04-20
Also published as: CN114123114A

Abstract

Disclosed in the present application are a bleeder circuit control method and apparatus, a bleeder device, and an electronic device. The bleeder circuit comprises a first path and a second path; the first path is connected in parallel with the second path. The control method comprises: if it is detected that an input voltage of the bleeder circuit is reduced, controlling the first path to be turned on; otherwise, controlling the first path to be turned off, wherein when the first path is in an on state, the bleeder circuit is in a quick bleeding state, and when the first path is in an off state, the bleeder circuit is in a normal working state. When a power supply circuit is in a normal working state, the first path is controlled to be turned off, and at this moment, the bleeder circuit is in the normal working state, and voltage stabilization and interference signal elimination are achieved in the circuit; when the power supply circuit is in a bleeding state, the control module controls the first path to be turned on, so that the bleeding process of the power supply circuit is accelerated.

Description

Control method and device for discharge circuit, discharge device and electronic equipment

This application claims the priority of the Chinese patent application submitted to the State Intellectual Property Office on October 12, 2021, the application number is 202111187401.9, and the application title is "control method and device for bleeder circuit, bleeder device, and electronic equipment". The entire contents are incorporated by reference in this application.

technical field

The embodiments of the present application relate to the field of circuit control, and in particular to a method and device for controlling a bleeder circuit, a bleeder device, and electronic equipment.

Background technique

At present, the logic complexity of the chip is extremely high, and the power consumption of the chip is relatively large when the chip is in the active state. To solve the problem of large power consumption of the chip, in related technologies, dynamic voltage and frequency scaling (DVFS) technology can be used to solve the problem. Solution, and when the chip does not need to work, the chip power supply is leaked to ensure that the chip is completely powered off.

However, due to the existence of various capacitances in the power supply circuit of the chip, the leakage process is relatively slow. If it is powered on again during the power leakage process, the internal reset circuit of the chip may not be able to generate an effective reset signal, resulting in an abnormal state of the chip.

Contents of the invention

The purpose of the embodiments of the present application is to provide a control method and device for a discharge circuit, a discharge device and electronic equipment, which can solve the problem of a slow circuit discharge process and speed up the circuit discharge process.

In order to solve the above-mentioned technical problems, the application is implemented as follows:

In the first aspect, the embodiment of the present application provides a control method for a bleeder circuit, which is applied to a bleeder circuit, and the bleeder circuit includes: a first path and a second path; the first path and the second path are connected in parallel; the control method Including: if it is detected that the input voltage of the discharge circuit is reduced, the first path is controlled to be turned on; otherwise, the first path is controlled to be disconnected; wherein, when the first path is in the conduction state, the discharge circuit is in the state of rapid discharge ; When the first path is disconnected, the discharge circuit is in a normal working state.

In the second aspect, the embodiment of the present application further provides a bleeder device, which includes: a voltage edge detection module, a control module, a current bleeder module and a first capacitor, and the current bleeder module is connected in parallel with the first capacitor; The voltage edge detection module is used to detect the falling edge of the input voltage of the discharge device; the control module is used to control the conduction of the current discharge module when the voltage edge detection module detects the falling edge of the input voltage of the discharge device ; The control module is also used to control the disconnection of the current discharge module when the voltage edge detection module does not detect the falling edge of the input voltage of the discharge device; wherein, when the current discharge module is in a conducting state, the discharge The discharge circuit is in a fast discharge state; when the current discharge module is in a disconnected state, the first capacitor is in a normal working state.

In the third aspect, the embodiment of the present application provides a control device for a bleeder circuit, which is applied to a bleeder circuit, and the bleeder circuit includes: a first path and a second path; the first path and the second path are connected in parallel; the control device Including: a detection module, which is used to detect the input voltage of the discharge circuit; a control module, which is used to control the conduction of the first path when the detection module detects that the input voltage of the discharge circuit is reduced; otherwise, control the first path disconnected; wherein, when the first path is in the conducting state, the discharge circuit is in the rapid discharge state; when the first path is in the disconnected state, the discharge circuit is in the normal working state.

In a fourth aspect, the embodiment of the present application provides an electronic device, including a processor, a memory, and a program or instruction stored on the memory and operable on the processor, and the program or instruction is implemented when executed by the processor. The steps of the method for controlling the bleeder circuit as described in the first aspect.

In the fifth aspect, the embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented .

In the sixth aspect, the embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions, so as to implement the first aspect the method described.

In the embodiment of the present application, when the power supply circuit is in the normal working state, the first path is controlled to be disconnected. At this time, the discharge circuit is in the normal working state, and plays the role of stabilizing the voltage and eliminating interference signals in the circuit; When the circuit is in the leakage state, the control module controls the first path to be turned on. At this time, the equivalent circuit of the discharge circuit is a low-resistance circuit, which accelerates the discharge process of the power supply circuit.

Description of drawings

FIG. 1 is a schematic flowchart of a control method for a bleeder circuit provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a discharge circuit provided in an embodiment of the present application;

Fig. 3 is a schematic diagram of a discharge device provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a voltage edge detection circuit provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a comparator circuit provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a control device for a bleeder circuit provided in an embodiment of the present application;

FIG. 7 is one of the structural schematic diagrams of an electronic device provided in an embodiment of the present application;

FIG. 8 is a second schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The following will clearly describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein, and that references to "first," "second," etc. distinguish Objects are generally of one type, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

The method for controlling a discharge circuit provided in the embodiment of the present application may be applied to a power supply circuit discharge scenario.

Exemplarily, for a power supply circuit leakage scenario, in the related art, due to a large amount of capacitance in the power supply circuit of the chip, the power leakage process of the power supply circuit of the chip takes a long time. And due to the uncertainty of the software operating the chip, there is a possibility of powering on the chip again during the power leakage process. At this time, because the chip is not completely powered off, the reset circuit inside the chip cannot generate an effective reset signal when it is powered on again, which in turn leads to an abnormal state of the chip. In severe cases, the entire system may crash and affect the stability of the entire system. greater impact.

In related technologies, such problems can be avoided by adding a delay operation and increasing the software operation time interval. However, the method of adding a delay operation will reduce the overall performance of the entire device, which is not suitable for working scenarios with high real-time requirements.

In response to this problem, in the technical solution provided by the embodiment of the present application, a leakage circuit and a control method for the leakage circuit are provided. When the power supply circuit is in a normal working state, the control module controls the current discharge module to be disconnected. At this time , the equivalent circuit of the discharge circuit is a capacitor, which plays the role of stabilizing the voltage and eliminating interference signals in the circuit; when the power supply circuit is in the discharge state, the control module controls the current discharge module to turn on, at this time, the first capacitor In the short-circuit state, the equivalent circuit of the discharge circuit is a low-resistance circuit, which accelerates the discharge process of the power supply circuit.

The method for controlling the bleeder circuit provided by the embodiment of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

As shown in Figure 1, a method for controlling a bleeder circuit provided by an embodiment of the present application is applied to a bleeder circuit, and the bleeder circuit includes: a first path and a second path; the first path and the second path The two channels are connected in parallel.

The control method of the discharge circuit may include the following steps 101 and 102:

Step 101, if it is detected that the input voltage of the bleeder circuit drops, control the first path to be turned on.

Exemplarily, the above-mentioned control module that controls the above-mentioned first path to be turned on or off may be the control module of the above-mentioned bleeder circuit. The control module may be a control circuit including various electronic components, or may be a control module or chip with logic processing functions, such as a central processing unit (Central Processing Unit, CPU).

It should be noted that the above-mentioned control of the first path to be turned on or off may also be other circuits or modules with control functions. In this embodiment, for the convenience of understanding, the control module controls the above-mentioned first path to be turned on or off. Disconnection is described as an example.

For example, when the control module is the above-mentioned control circuit, the control circuit can output a high-level signal to the first channel when it detects that the input voltage of the bleeder circuit is lowered; otherwise, it can output a low-level signal to the first channel. flat signal. The above-mentioned high-level signal and low-level signal are respectively used to control the first path to be turned on and to control the first path to be turned off.

Exemplarily, the above-mentioned first path may be an adjustable resistance circuit capable of controlling a switch of the circuit path. The resistance gear of the resistance circuit can be programmed, and it supports 10 to 1k ohm resistance, and the corresponding signal sequence is modulated by an external power supply to realize the locking of the resistance gear. After the first path receives the high-level signal output by the control module, the path of the resistance circuit is turned on. At this time, the resistance circuit is connected in parallel with the second circuit, and the leakage rate is accelerated. Moreover, when the first channel receives the signal output by the control module, the discharge circuit is in a dormant state, and the power consumption is extremely low.

Step 102, otherwise, control the above-mentioned first path to be disconnected.

Wherein, when the first path is in the on state, the discharge circuit is in the rapid discharge state; when the first path is in the off state, the discharge circuit is in the normal working state.

Exemplarily, the above-mentioned second circuit may be a circuit including a first capacitor. When the power supply circuit where the above-mentioned discharge circuit is located needs to discharge electricity, the capacitor in the above-mentioned second circuit may slow down the leakage speed and affect the performance of the entire circuit. normal work.

It can be understood that the functions of capacitors in the circuit include coupling, filtering, high-frequency vibration elimination, decoupling, energy storage, etc. Take the filter capacitor that acts as a filter in the circuit as an example. Due to the high-frequency and low-frequency characteristics of the capacitor, the filter capacitor It can be filtered to remove signals within a certain frequency band from the total signal.

The above function of the capacitor mainly depends on the charging and discharging process of the capacitor. When a voltage is applied to both ends of the capacitor, the capacitor starts to charge, and when the voltage applied to both ends of the capacitor decreases or disappears, the capacitor starts to discharge. Since the charging and discharging process of the capacitor takes a certain amount of time, based on this, when the circuit leaks, the voltage at both ends of the capacitor decreases, and the capacitor starts to supply power to the circuit until the electric energy stored in the capacitor is completely released, resulting in the power consumption of the circuit during the discharge process. for a long time.

Based on the above principles, the embodiment of the present application provides a control method for a leakage circuit, the principle of which includes: when the power supply circuit is in a normal working state, the control module controls the first path to be disconnected, at this time, the equivalent of the leakage circuit The circuit is a capacitive circuit, which plays the role of stabilizing voltage and eliminating interference signals in the circuit; when the power supply circuit is in the state of leakage, the control module controls the conduction of the first path. At this time, the first circuit and the second circuit are in a parallel state. The equivalent circuit of the discharge circuit is a low-resistance circuit, which accelerates the discharge process of the power supply circuit.

Exemplarily, as shown in FIG. 2 for the bleeder circuit, the first path 22 and the second circuit 23 are connected in parallel to the power supply circuit. In FIG. 2 , for the convenience of understanding, the circuit including the capacitor C1 is described as the second circuit 23 . When the circuit where the discharge circuit is located is working normally, the first path 22 is in a disconnected state, and the discharge circuit at this moment is equivalent to a capacitor circuit; when the control module 21 detects that the input voltage of the discharge circuit decreases, the control module 21 controls the conduction of the first path 22. At this time, the first path 22 is equivalent to a low-resistance circuit. When the first path 22 is turned on, the discharge circuit is equivalent to a low-resistance circuit, and the capacitor is short-circuited to accelerate the discharge process.

In this way, when the circuit leaks, the first circuit with low resistance and the second circuit containing capacitance can be connected in parallel to reduce the influence of the capacitance in the second circuit on the circuit during the leakage and accelerate the leakage process.

Optionally, in the embodiment of the present application, in order to accurately determine whether the power supply of the bleeder circuit is leaking, the falling edge of the input voltage of the bleeder circuit can be detected. When the falling edge of the input voltage is detected, Indicates that the power supply is leaking.

Exemplarily, the above step 101 may include the following steps 101a1 and 101a2:

Step 101a, if a falling edge of the input voltage of the bleeder circuit is detected, send a first control signal to the first circuit.

Step 201a2, otherwise, send a second control signal to the first circuit.

Wherein, the above-mentioned first control signal is used to control the first path to be turned on, and the second control signal is used to control the first path to be turned off.

Exemplarily, in order to accurately detect the power-off process of the power supply of the bleeder circuit, the bleeder circuit may further include a voltage edge detection module, which can detect the falling edge of the input voltage input to the bleeder circuit , when the voltage edge detection module detects the falling edge of the input voltage, it indicates that the power supply is leaking, and at this time, the control module can send a first control signal to the first path.

In a possible implementation manner, if the voltage input to the leakage circuit no longer changes, or the voltage input to the leakage circuit is less than the second preset voltage, it means that the power supply has completed the leakage process, and the control module sends a report to the first A channel sends the second control signal.

Exemplarily, after the first path receives the above-mentioned second control signal, the current path of the first path is disconnected, so that only the second circuit in the bleeder circuit is in the conduction state, and at this time, the bleeder circuit is in normal operation state.

In this way, by detecting the falling edge of the input voltage of the discharge circuit, it can be accurately judged whether the power supply of the discharge circuit is in a leakage state.

Optionally, in this embodiment of the present application, since the first path needs to consume a certain amount of electric energy during operation, in order to ensure normal operation of the first path, it is necessary to supply power to the first path.

For example, since the input voltage of the bleeder circuit gradually decreases as the bleeder process of the power supply continues, the input voltage may be insufficient to supply power to the first path. At this time, in order to ensure that the bleeder circuit can continuously discharge power supply, other power supply methods need to be used to supply power to the first path.

Exemplarily, the above discharge circuit may further include a power supply module configured to supply power to the current discharge circuit when the input voltage of the discharge circuit is too low.

Exemplarily, after the above step 102, the control method provided by the embodiment of the present application may further include the following step 103 or step 104:

Step 103 , when the input voltage of the bleeder circuit is greater than or equal to the first preset voltage, switch the power supply mode of the first path to the first power supply mode.

Step 104 , when the input voltage of the bleeder circuit is lower than the first preset voltage, switch the power supply mode of the first path to the second power supply mode.

Exemplarily, the above-mentioned first power supply mode may be to use the power supply in the bleeder circuit to supply power, and the above-mentioned second power supply mode may be to use the power supply in the bleeder circuit to supply power.

Exemplarily, when the power supply of the discharge circuit is in a normal working state, the power supply module can be charged through the power supply. When the power supply is in the discharge state and the input voltage of the discharge circuit is lower than the first preset voltage, the power supply module can release the stored electric energy to supply power to the first path.

In this way, using the aforementioned dual power supply mode to supply power to the first path can ensure the continuity of the rapid discharge process.

Further optionally, in the embodiment of the present application, an energy storage capacitor may be provided in the discharge circuit to store and release electric energy to ensure normal power supply of the first path.

Exemplarily, in order to detect in real time whether the input voltage of the bleeder circuit is lower than the first preset voltage, the bleeder circuit may further include a voltage detection module configured to detect the input voltage of the bleeder circuit.

Exemplarily, in order to store electric energy and switch power supply, the above-mentioned power supply module may include a switch module and a second capacitor. The switching module is used for switching the power supply mode of the power supply module, and the second capacitor is used for storing electric energy and supplying power to the current discharge circuit.

Exemplarily, the above step 103 and step 104 may include the following step 103a and step 104a:

Step 103a, when the voltage detection module detects that the input voltage of the bleeder circuit is greater than or equal to the first preset voltage, the switching module switches the power supply mode of the power supply module to the first path to the first power supply mode.

Step 104a, when the voltage detection module detects that the input voltage of the bleeder circuit is lower than the first preset voltage, the switching module switches the power supply mode of the power supply module to the first path to the second power supply mode.

Wherein, in the first power supply mode, the power supply module uses the input voltage of the discharge circuit to supply power to the current discharge circuit; in the second power supply mode, the power supply module supplies power to the current discharge circuit by using the electric energy stored in the second capacitor.

Exemplarily, when the power supply of the discharge circuit is in a normal working state, the above-mentioned second capacitor can be charged, and when the power supply of the discharge circuit causes the input voltage to the discharge circuit to be lower than the first preset When the voltage is high, the electric energy stored in the second capacitor can be released to supply power to the first path.

In this way, by setting the capacitor in the control module, the capacitor can be charged in the normal working state, and the electric energy stored in the capacitor can be used in the leakage state to ensure the continuity of the rapid leakage.

In the control method of the discharge circuit provided in the embodiment of the present application, when the power supply circuit is in a normal working state, the first path is controlled to be disconnected. At this time, the discharge circuit is in a normal working state to stabilize the voltage and eliminate interference in the circuit. The function of the signal; when the power supply circuit is in the leakage state, the control module controls the first path to be turned on. At this time, the equivalent circuit of the discharge circuit is a low-resistance circuit, which accelerates the discharge process of the power supply circuit.

It should be noted that, the control method of the bleeder circuit provided in the embodiment of the present application may be executed by the bleeder circuit, or a control module in the bleeder circuit for executing the control method of the bleeder circuit. In the embodiment of the present application, the bleeder circuit is used as an example to illustrate the bleeder circuit provided in the embodiment of the present application.

It should be noted that, in the embodiment of the present application, the above-mentioned methods are shown in the drawings. The control method of the bleeder circuit is described as an example in conjunction with a drawing in the embodiment of the present application. In specific implementation, the control method of the discharge circuit shown in the drawings of the above methods can also be implemented in combination with any other drawings shown in the above embodiments that can be combined, and will not be repeated here.

In conjunction with FIG. 2, as shown in FIG. 3, a schematic diagram of a possible structure of a bleeder device provided in an embodiment of the present application is provided. As shown in FIG. 3, the bleeder device includes: a voltage edge detection module 301, a control module 302, The current discharge module 303 and the first capacitor 304 and; the current discharge module 303 is connected in parallel with the first capacitor 304; the voltage edge detection module 301 is used to detect the falling edge of the input voltage of the discharge device; the control module 302 is used for When the voltage edge detection module 301 detects the falling edge of the input voltage of the discharge device, the control current discharge module 303 is turned on; the control module 302 is also used to detect the input of the discharge device when the voltage edge detection module 301 In the case of the falling edge of the voltage, the control current discharge module 303 is disconnected; wherein, when the current discharge module 303 is in the conduction state, the discharge circuit is in the fast discharge state; when the current discharge module 303 is in the disconnected state , the first capacitor 304 is in a normal working state.

Exemplarily, the bleeder device provided in the embodiment of the present application may be a circuit packaged in the same size as that of the chip capacitor, that is, the bleeder device may be packaged in a space the size of the capacitor. The package size of chip capacitors can include 0402, 0603, 0201 and other package sizes. The discharge device packaged with this package size can directly replace the capacitor in the circuit, and the capacitance value of the first capacitor in the discharge device is the same as that of the replaced capacitor, which does not affect the power distribution network of the original circuit ( Power Delivery Network, PDN) specifications.

Exemplarily, the bleeder device provided by the embodiment of the present application can be designed with reference to the structure shown in Figure 2, including a control circuit for controlling the on and off of the current bleeder module, and a first capacitance.

Optionally, the bleeder device further includes: a power supply module, the power supply module 305 is used to supply power to the current bleeder circuit; the power supply module 305 is used to supply power when the input voltage of the bleeder device is greater than or equal to the first preset voltage , using the input voltage of the bleeder circuit to supply power to the current bleeder circuit; or, the power supply module 305 is also used to supply the electric energy stored in the power supply module 305 to the The current discharge circuit supplies power; wherein, the electric energy stored in the power supply module 305 is: when the power supply module 305 uses the input voltage of the discharge circuit to supply power to the current discharge circuit, the electric energy stored by the power supply module 305 through the input voltage of the discharge circuit.

For example, as shown in FIG. 3 , the discharge device further includes a power supply module 23 , and the power supply module 23 is used to supply power to the current discharge module 22 .

Optionally, the above-mentioned voltage edge detection module 301 includes: a first comparator and a second comparator, an exclusive OR circuit, a voltage follower, a clock circuit, an AND gate circuit and a latch; the output terminal of the first comparator and The output end of the second comparator is respectively connected to the input end of the XOR circuit; the output end of the XOR circuit and the output end of the voltage follower are respectively connected to the input end of the AND gate circuit; the output end of the XOR circuit is also connected to the input of the clock circuit The terminal is connected; the output terminal of the AND gate circuit and the output terminal of the clock circuit are respectively connected to the input terminal of the latch.

The first comparator and the second comparator are respectively used to compare the input voltage of the discharge circuit with different reference voltages, and output the first comparison signal and the second comparison signal; the exclusive OR circuit is used for when the first comparison When the first comparison signal output by the comparator is different from the second comparison signal output by the second comparator, the first signal is output, and the first signal is used to indicate the increase or decrease of the input voltage of the discharge device; the AND gate circuit is used for A third signal is generated according to the first signal and the second signal output by the voltage follower; a clock circuit is used to generate a clock signal according to the first signal; a latch is used to determine the discharge device according to the third signal and the clock signal falling edge of the input voltage.

Exemplarily, the voltage edge detection module 301 provided in the embodiment of the present application may be designed with reference to the voltage edge detection circuit shown in FIG. 4 . As shown in Figure 4, the input signal is generated by U1 and U2 comparators to generate VP and VN signals, and the VP and VN signals complete the XOR operation through the XOR1 exclusive OR circuit to generate the Vedge signal, which is used to generate Vclock and is used for voltage detection The hold circuit performs an AND operation, and the signal generated by Vclock passes through the latch Q1 to complete voltage falling edge detection. That is, when the input voltage drops, the latch Q1 outputs a high level voltage signal.

The bleeder device provided in the embodiment of the present application can realize various processes realized by the bleeder circuit in the method embodiments shown in FIG. 1 to FIG. 2 , and details are not repeated here to avoid repetition.

Exemplarily, the voltage detection module can detect the comparison result between the input voltage of the bleeder device and the first preset voltage through a voltage detection circuit, as shown in FIG. 5 , a comparator used in a typical voltage detection circuit. This application The voltage detection function of the voltage detection module of the embodiment can be realized by the comparator.

The discharge device provided in the embodiment of the present application, when the discharge device is in the normal working state, the current discharge module is in the disconnected state, and at this time, the discharge circuit is in the normal working state, which stabilizes the voltage and eliminates interference in the circuit The role of the signal. When the voltage edge detection module detects the falling edge of the input voltage of the discharge device and the discharge device is in the discharge state, the control module controls the current discharge module to be turned on. At this time, the current discharge module is connected in parallel with the first capacitor , the equivalent circuit of the discharge circuit is a low-resistance circuit, which accelerates the discharge process of the power supply circuit. In this way, the discharge device can quickly discharge the current when the circuit is in the discharge state.

Fig. 6 is a schematic diagram of a possible structure for implementing a control device for a bleeder circuit according to an embodiment of the present application. The control device is used to control the bleeder circuit, and the bleeder circuit includes: a first path and a second path.

As shown in FIG. 6 , the control device 600 includes: a detection module 601, configured to detect the input voltage of the discharge circuit; a control module 602, configured to detect that the input voltage of the discharge circuit is lowered by the detection module 601, Control the first path to be turned on; otherwise, control the first path to be disconnected; wherein, when the first path is in the on state, the discharge circuit is in the rapid discharge state; when the first path is in the off state, the discharge circuit in normal working condition.

Optionally, the control module 602 is specifically configured to send a first control signal to the first path when a falling edge of the input voltage of the bleeder circuit is detected; otherwise, send a second control signal to the first path; wherein , the first control signal is used to control the first path to be turned on; the second control signal is used to control the first path to be turned off.

Optionally, the control device further includes: a switching module 603; the switching module 603 is configured to switch the power supply mode of the first path to switch to the first power supply mode; or, the switch module 603 is used to switch the power supply mode of the first path to the second power supply mode when the detection module 601 detects that the input voltage of the discharge circuit is lower than the first preset voltage ; Wherein, in the first power supply mode, the input voltage of the discharge circuit is used to supply power to the first path; the discharge circuit stores energy in the first power supply mode, and in the second power supply mode, uses the stored electric energy to supply The first path supplies power.

The control device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle electronic device, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant). assistant, PDA), etc., non-mobile electronic devices can be servers, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (television, TV), teller machine or self-service machine, etc., this application Examples are not specifically limited.

The control device in the embodiment of the present application may be a device with an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in this embodiment of the present application.

The control device provided in the embodiment of the present application can implement various processes implemented by the bleeder circuit in the method embodiments in FIG. 1 to FIG. 2 , and details are not repeated here to avoid repetition.

For the beneficial effects of the various implementations in this embodiment, refer to the beneficial effects of the corresponding implementations in the foregoing method embodiments. To avoid repetition, details are not repeated here.

The control device of the discharge circuit provided in the embodiment of the present application controls the disconnection of the first path when the power supply circuit is in a normal working state. At this time, the discharge circuit is in a normal working state to stabilize the voltage and eliminate interference in the circuit. The function of the signal; when the power supply circuit is in the leakage state, the control module controls the first path to be turned on. At this time, the equivalent circuit of the discharge circuit is a low-resistance circuit, which accelerates the discharge process of the power supply circuit.

Optionally, as shown in FIG. 7 , the embodiment of the present application further provides an electronic device 700, including a processor 701, a memory 702, and programs or instructions stored in the memory 702 and operable on the processor 701, When the program or instruction is executed by the processor 701, each process of the above embodiment of the control method for the bleeder circuit can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

FIG. 8 is a schematic diagram of a hardware structure of an electronic device implementing various embodiments of the present application.

The electronic device 800 includes, but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810, etc. part.

Those skilled in the art can understand that the electronic device 800 can also include a power supply (such as a battery) for supplying power to various components, and the power supply can be logically connected to the processor 810 through the power management system, so that the management of charging, discharging, and function can be realized through the power management system. Consumption management and other functions. The structure of the electronic device shown in FIG. 8 does not constitute a limitation to the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine some components, or arrange different components, and details will not be repeated here. .

It should be understood that, in the embodiment of the present application, the input unit 804 may include a graphics processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042, and the graphics processor 8041 is used for the image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes a touch panel 8071 and other input devices 8072 . The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts, a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here. Memory 809 may be used to store software programs as well as various data, including but not limited to application programs and operating systems. The processor 810 may integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs, and the modem processor mainly processes wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 810 .

The embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or an instruction, and when the program or instruction is executed by the processor, each process of the above embodiment of the control method for the bleeder circuit is implemented, and The same technical effect can be achieved, so in order to avoid repetition, details will not be repeated here.

Wherein, the processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the control method of the above-mentioned bleeder circuit The various processes of the embodiment can achieve the same technical effect, so in order to avoid repetition, details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be called system-on-chip, system-on-chip, system-on-a-chip, or system-on-a-chip.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , optical disc), including several instructions to make an electronic device (which may be a mobile phone, a computer, a server, or a network device, etc.) execute the method described in each embodiment of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

A method for controlling a bleeder circuit, applied to a bleeder circuit, the bleeder circuit comprising: a first path and a second path; the first path is connected in parallel with the second path;

The control methods include:

If it is detected that the input voltage of the bleeder circuit drops, the first path is controlled to be turned on;

Otherwise, control the first path to be disconnected;

Wherein, when the first path is in the on state, the discharge circuit is in the rapid discharge state; when the first path is in the off state, the discharge circuit is in the normal working state.
The control method of the bleeder circuit according to claim 1, wherein if it is detected that the input voltage of the bleeder circuit is lowered, controlling the conduction of the first path includes:

If the falling edge of the input voltage of the bleeder circuit is detected, a first control signal is sent to the first path; otherwise, a second control signal is sent to the first path;

Wherein, the first control signal is used to control the first path to be turned on; the second control signal is used to control the first path to be turned off.
The control method of the bleeder circuit according to claim 1 or 2, wherein, after the control of the conduction of the first path, the control method further comprises:

When it is detected that the input voltage of the bleeder circuit is greater than or equal to a first preset voltage, switching the power supply mode of the first path to the first power supply mode;

or,

When it is detected that the input voltage of the bleeder circuit is less than a first preset voltage, switching the power supply mode of the first path to a second power supply mode;

Wherein, in the first power supply mode, the input voltage of the discharge circuit is used to supply power to the first path; the discharge circuit stores energy in the first power supply mode, and in the In the second power supply mode, the stored electric energy is used to supply power to the first path.
A discharge device, including: a voltage edge detection module, a control module, a current discharge module and a first capacitor, and the current discharge module is connected in parallel with the first capacitor;

The voltage edge detection module is used to detect the falling edge of the input voltage of the discharge device;

The control module is configured to control the current discharge module to be turned on when the voltage edge detection module detects a falling edge of the input voltage of the discharge device;

The control module is further configured to control the current discharge module to disconnect when the voltage edge detection module does not detect the falling edge of the input voltage of the discharge device;

Wherein, when the current discharge module is in the on state, the discharge circuit is in the rapid discharge state; when the current discharge module is in the off state, the first capacitor is in the normal working state.
The discharge device according to claim 4, wherein the discharge device further comprises: a power supply module configured to supply power to the current discharge circuit;

The power supply module is configured to use the input voltage of the discharge circuit to supply power to the current discharge circuit when the input voltage of the discharge device is greater than or equal to a first preset voltage;

or,

The power supply module is further configured to use the electric energy stored in the power supply module to supply power to the current discharge circuit when the input voltage of the discharge device is lower than the first preset voltage;

Wherein, the electric energy stored in the power supply module is: when the power supply module uses the input voltage of the discharge circuit to supply power to the current discharge circuit, the power stored by the power supply module through the input voltage of the discharge circuit electrical energy.
The discharge device according to claim 4 or 5, wherein the voltage edge detection module comprises: a first comparator and a second comparator, an exclusive OR circuit, a voltage follower, a clock circuit, an AND gate circuit and a lock storage; the output end of the first comparator and the output end of the second comparator are respectively connected to the input end of the exclusive OR circuit; the output end of the exclusive OR circuit and the output end of the voltage follower The input terminals of the AND gate circuit are respectively connected; the output terminal of the exclusive OR circuit is also connected with the input terminal of the clock circuit; the output terminal of the AND gate circuit and the output terminal of the clock circuit are respectively connected with the latch the input terminal of the device;

The first comparator and the second comparator are respectively used to compare the input voltage of the bleeder circuit with different reference voltages, and output a first comparison signal and a second comparison signal;

The XOR circuit is configured to output a first signal when the first comparison signal output by the first comparator is different from the second comparison signal output by the second comparator, and the first signal is used for for instructing the input voltage of the bleeder device to increase or decrease;

The AND gate circuit is configured to generate a third signal according to the first signal and the second signal output by the voltage follower;

The clock circuit is configured to generate a clock signal according to the first signal;

The latch is configured to determine the falling edge of the input voltage of the discharge device according to the third signal and the clock signal.
A control device for a bleeder circuit, wherein, for controlling the bleeder circuit, the bleeder circuit includes: a first path and a second path; the first path is connected in parallel with the second path;

The control device includes:

A detection module, configured to detect the input voltage of the discharge circuit;

A control module, configured to control the first path to be turned on when the detection module detects that the input voltage of the bleeder circuit is reduced; otherwise, control the first path to be turned off;

Wherein, when the first path is in the on state, the discharge circuit is in the rapid discharge state; when the first path is in the off state, the discharge circuit is in the normal working state.
The apparatus according to claim 7, wherein,

The control module is specifically configured to send a first control signal to the first path when a falling edge of the input voltage of the bleeder circuit is detected; otherwise, the sending the first control signal to the first path 2. Control signals;

Wherein, the first control signal is used to control the first path to be turned on; the second control signal is used to control the first path to be turned off.
The device according to claim 7 or 8, wherein the control device further comprises: a switching module;

The switching module is configured to switch the power supply mode of the first path to the first power supply mode when the detection module detects that the input voltage of the bleeder circuit is greater than or equal to a first preset voltage;

or,

The switching module is used to switch the power supply mode of the first path to the second power supply mode when the detection module detects that the input voltage of the discharge circuit is less than a first preset voltage;

Wherein, in the first power supply mode, the input voltage of the discharge circuit is used to supply power to the first path; the discharge circuit stores energy in the first power supply mode, and in the In the second power supply mode, the stored electric energy is used to supply power to the first path.
An electronic device, including a processor, a memory, and a program or instruction stored in the memory and operable on the processor, when the program or instruction is executed by the processor, the invention according to claim 1 is realized Steps in the control method of the discharge circuit described in any one of to 3.
A readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by the processor, the control of the bleeder circuit according to any one of claims 1 to 3 is realized method steps.
A chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run a program or an instruction, and realize the leakage according to any one of claims 1 to 3 The steps of the control method of the discharge circuit.
A computer program product, the computer program product is stored in a non-volatile storage medium, and the computer program product is executed by at least one processor to realize the release according to any one of claims 1 to 3 The steps of the control method of the circuit.
An electronic device, comprising the electronic device configured to execute the steps of the method for controlling a bleeder circuit according to any one of claims 1 to 3.