CN104808730A - Control method and system for output voltage of mobile terminal and power supply management chip thereof - Google Patents
Control method and system for output voltage of mobile terminal and power supply management chip thereof Download PDFInfo
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Abstract
The invention discloses a control method and system for output voltage of a mobile terminal and a power supply management chip thereof. The method comprises the following steps: an adjustable resistor is connected between each voltage output end of the power supply management chip of the mobile terminal and a functional chip power supply end in series; needed working voltage for opening a functional chip is obtained, and output voltage which has the smallest difference with the working voltage needed by the functional chip is found to be used as current output voltage; the resistance value of the adjustable resistor which is connected with the opened functional chip in series is controlled and adjusted so that the actual voltage to the opened functional chip, which is output by the voltage of the power supply management chip of the mobile terminal, is consistent to the working voltage needed by the opened functional chip. According to the method disclosed by the invention, various voltage values can be output by the power supply management chip so that the requirements of power supply voltage of all the chips can be met and a great selection scope is provided for selecting all the functional chips for the mobile terminal; the working of the chips with high power supply voltage precision requirements is more stable.
Description
Technical field
The present invention relates to field of mobile terminals, in particular a kind of mobile terminal and output voltage of power management chip control method thereof and system.
Background technology
Along with the fast development of mobile device and improving constantly of people's living standard, the use of various mobile terminals as mobile phone is more and more universal, and mobile phone has become indispensable means of communication in people's life.
In mobile terminal, each chip all needs to be powered by power management chip, and can the stability of the voltage that power management chip exports normally work directly having influence on each chip in mobile terminal.As shown in Figure 1, power management chip is connected to the supply voltage that multiple chip (chip 1, chip 2, chip 3, chip 4, chip 5, chip 6) provides each chip to need for each chip, on the mobile terminal of reality, various functional chip will far away more than shown in Fig. 1, as WIFI chip, Bluetooth chip, NFC chip, various sensor chips etc.
In the prior art, although each road output voltage of power management chip all can be arranged separately, generally maximum is also arranged by the register of 8, and the scope arranging voltage is limited after all, can only have 2 at most
8=256 kinds of voltages can be arranged; Therefore, being all that step installs voltage in power management chip, such as, is that stepping is arranged with 20mV, namely can only arrange 20mV, 40mV, 60mV, Therefore, when selecting the various chip that mobile terminal uses, if power management chip cannot export the voltage supplied of this chip, can only substitute by the identical chip of selection function; Or the voltage that the supply voltage selecting input voltage and this functional chip to need is close, but functional chip can be made to there is the risk of job insecurity.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of mobile terminal and output voltage of power management chip control method thereof and system.Power management chip can be made to export various magnitude of voltage by method provided by the invention, therefore can meet the requirement of various chip for supply voltage, select various functional chip for mobile terminal and provide larger choice; Also some can be made more stable for the chip operation that supply voltage accuracy requirement is high.
The technical scheme that technical solution problem of the present invention adopts is as follows:
Based on an output voltage of power management chip control method for mobile terminal, wherein, comprising:
A, each voltage output end and an adjustable resistance of connecting respectively between each functional chip feeder ear at mobile terminal power management chip;
B, the in advance output voltage of the various settings of save register and correspondence thereof in advance in the power management chip of mobile terminal, and form each output voltage corresponding to register settings;
C, when certain functional chip open need power time, obtain the operating voltage required for functional chip of this unlatching, search in power management chip to be kept in advance in the various settings of register and the output voltage of correspondence thereof and differ minimum output voltage with the operating voltage required for this functional chip, as current output voltage, prepare to power to the functional chip of this unlatching;
The resistance of the adjustable resistance that D, regulating and controlling are connected with the functional chip of this unlatching, makes the voltage of mobile terminal power management chip output to the virtual voltage of this open function chip and the operating voltage required for the functional chip of this unlatching is consistent.
The described output voltage of power management chip control method based on mobile terminal, wherein, described steps A specifically comprises:
A1, voltage output end and the adjustable resistance Rx that connects between each functional chip feeder ear at mobile terminal power management chip, and resistance Rx initial value is set to 0 ohm.
The described output voltage of power management chip control method based on mobile terminal, wherein, described step C specifically comprises:
C1, obtain the operational voltage value Vout that each road functional chip needs;
C2, the register arranging power management chip make power management chip export, in a preset range, be more than or equal to the output voltage Vpm of described operational voltage value with described operational voltage value Vout difference; As current output voltage, prepare to power to the functional chip of this unlatching.
The described output voltage of power management chip control method based on mobile terminal, wherein, described step D specifically comprises:
D1, the register of this road output voltage arranging the functional chip of current unlatching are Rpm, make current output voltage be Vpm;
The actual voltage value Vk of functional chip feeder ear that D2, Real-time Obtaining are opened, and the operational voltage value Vout that the functional chip of described actual voltage value Vk and this unlatching needs is compared;
If the described virtual voltage Vk of D3 equals the operational voltage value Vout of the functional chip of this unlatching, then adjustable resistance Rx is not made adjustments;
If the described virtual voltage Vk of D4 is greater than the operational voltage value Vout of the functional chip of this unlatching, then process is tuned up to adjustable resistance Rx, until described virtual voltage Vk equals the operational voltage value Vout of the functional chip of this unlatching, complete adjustment.
The described output voltage of power management chip control method based on mobile terminal, wherein, adjustable resistance resistance is increased 1 ohm by adjustable resistance Rx tuning up be treated in described step D4 at every turn.
Based on an output voltage of power management chip control system for mobile terminal, wherein, comprising:
Link control module, for controlling at each voltage output end of mobile terminal power management chip and an adjustable resistance of connecting respectively between each functional chip feeder ear;
Module is set, for the output voltage of the various settings of save register and correspondence thereof in advance in the power management chip of mobile terminal in advance, and forms each output voltage corresponding to register settings;
Obtain and search control module, when need power for opening when certain functional chip, obtain the operating voltage required for functional chip of this unlatching, search in power management chip to be kept in advance in the various settings of register and the output voltage of correspondence thereof and differ minimum output voltage with the operating voltage required for this functional chip, as current output voltage, prepare to power to the functional chip of this unlatching;
Output voltage regulates processing module, for the resistance of the adjustable resistance that regulating and controlling is connected with the functional chip of this unlatching, the voltage of mobile terminal power management chip is made to output to the virtual voltage of this open function chip and the operating voltage required for the functional chip of this unlatching is consistent.
The described output voltage of power management chip control system based on mobile terminal, wherein, obtains and searches control module and comprise:
Acquiring unit, for obtaining the operational voltage value Vout that each road functional chip needs;
Export setting unit, the register for arranging power management chip makes power management chip export, in a preset range, be more than or equal to the output voltage Vpm of described operational voltage value with described operational voltage value Vout difference; As current output voltage, prepare to power to the functional chip of this unlatching.
The described output voltage of power management chip control system based on mobile terminal, wherein, described output voltage regulates processing module specifically to comprise:
Voltage setting unit, the register for this road output voltage arranging the functional chip of current unlatching is Rpm, makes current output voltage be Vpm;
Comparing unit, for the actual voltage value Vk of functional chip feeder ear that Real-time Obtaining is opened, and compares the operational voltage value Vout that the functional chip of described actual voltage value Vk and this unlatching needs;
First control module, if the operational voltage value Vout equaling the functional chip of this unlatching for described virtual voltage Vk, does not then make adjustments adjustable resistance Rx;
Second control module, if be greater than the operational voltage value Vout of the functional chip of this unlatching for described virtual voltage Vk, then process is tuned up to adjustable resistance Rx, until described virtual voltage Vk equals the operational voltage value Vout of the functional chip of this unlatching, complete adjustment.
The described output voltage of power management chip control system based on mobile terminal, wherein, described tune up to be treated to adjustable resistance Rx adjustable resistance resistance is increased 1 ohm at every turn.
A kind of mobile terminal, wherein, at each voltage output end and an adjustable resistance of connecting respectively between each functional chip feeder ear of mobile terminal power management chip; The output voltage of power management chip control method based on mobile terminal described in above-mentioned any one is adopted to realize
Mobile terminal provided by the present invention and output voltage of power management chip control method thereof and system, the present invention is by the output terminal of voltage and the adjustable resistance Rx that connects between functional chip feeder ear, when needs arrange output voltage Vout, first arrange can export with Vout closest to and be more than or equal to the voltage Vpm of Vout, whether the voltage then obtaining functional chip feeder ear equals Vout, if be not equal to Vout, progressively tunes up Rx until the voltage of functional chip feeder ear equals Vout.By method provided by the invention, mobile terminal is made to add New function: the magnitude of voltage that power management chip can be made to export various script can not export, thus meet the needs that various functional chip powers, make each functional chip supply voltage on mobile terminal more stable, also have more choice for mobile terminal production firm when selecting function chip simultaneously.
Accompanying drawing explanation
Fig. 1 is that the mobile terminal power management chip of prior art is connected to multiple chip structure schematic diagram.
Fig. 2 is the process flow diagram of the first preferred embodiment of the output voltage of power management chip control method that the present invention is based on mobile terminal.
Fig. 3 is the power management chip syndeton schematic diagram of the first preferred embodiment of the output voltage of power management chip control method that the present invention is based on mobile terminal.
Fig. 4 is a kind of output voltage of power management chip control system functional schematic block diagram based on mobile terminal of the present invention.
Fig. 5 is the functional schematic block diagram of mobile terminal embodiment of the present invention.
Fig. 6 is the principle of work process flow diagram of mobile terminal embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 2, Fig. 2 is the process flow diagram of the first preferred embodiment of the output voltage of power management chip control method that the present invention is based on mobile terminal.As shown in Figure 2, the output voltage of power management chip control method based on mobile terminal described in the embodiment of the present invention, comprises the following steps:
Step S510, each voltage output end and an adjustable resistance of connecting respectively between each functional chip feeder ear at mobile terminal power management chip.
In the embodiment of the present invention, at each voltage output end of mobile terminal power management chip and an adjustable resistance of connecting respectively between each functional chip feeder ear, as shown in Figure 3, at power management chip 100 with the first functional chip 301(as WIFI chip) between to connect the first adjustable resistance 201, at power management chip with the second functional chip 302(as Bluetooth chip) between to connect the second adjustable resistance 202.
Step S520, the in advance output voltage of the various settings of save register and correspondence thereof in advance in the power management chip of mobile terminal, and form each output voltage corresponding to register settings.
Although at present power management chip generally adopts eight bit register to arrange output voltage, and being that step-by-step movement is arranged, such as, is that stepping is arranged with 20mV, namely can only arrange 20mV, 40mV, 60mV, But consider wider usable range when the present invention specifically implements, and following power management chip voltage arranges possible development trend; Need the output voltage of the various settings of prior save register and correspondence thereof in power management chip, and form each output voltage corresponding to register settings: contain power management chip for the corresponding relation between these road output voltage and register settings; Such as, in power management chip, (only having write a part) is configured:
Register arranges 0x00: output voltage is closed;
Register arranges 0x01: output voltage 20mV;
Register arranges 0x02: output voltage 25mV;
Register arranges 0x03: output voltage 30mV;
Register arranges 0x04: output voltage 50mV;
Register arranges 0x05: output voltage 80mV;
……
Above-mentioned ": " left side is the value that register is arranged, the output voltage that ": " the right is corresponding.
Step S530, when certain functional chip open need power time, obtain the operating voltage required for functional chip of this unlatching, search in power management chip to be kept in advance in the various settings of register and the output voltage of correspondence thereof and differ minimum output voltage with the operating voltage required for this functional chip, as current output voltage, prepare to power to the functional chip of this unlatching.
In this step, when certain functional chip needs power supply as the unlatching of WIFI functional chip, obtain the functional chip of this unlatching as the operating voltage needed when WIFI functional chip works.Then search in each output voltage corresponding to register settings configured in power management chip, differ minimum output voltage with the operating voltage required for this functional chip, as current output voltage, prepare to power to the functional chip of this unlatching.If the operating voltage that WIFI functional chip needs is 70mV, then can search each the output voltage group corresponding to register settings configured in power management chip is: register arranges 0x05: output voltage 80mV.
The resistance of the adjustable resistance that step S540, regulating and controlling are connected with the functional chip of this unlatching, makes the voltage of mobile terminal power management chip output to the virtual voltage of this open function chip and the operating voltage required for the functional chip of this unlatching is consistent.
The described operating voltage needed when WIFI functional chip connected is 70mV, and at present power management chip output elder generation be output voltage be 80mV, so the resistance of adjustable resistance that regulating and controlling is connected with the functional chip of this unlatching, when output voltage is 80mV, reality only needs operating voltage to be 70mV, then can control the resistance tuning up adjustable resistance, make the voltage of mobile terminal power management chip output to the virtual voltage of this open function chip and the operating voltage required for the functional chip of this unlatching is consistent.
Based on the output voltage of power management chip control method of mobile terminal described in the embodiment of the present invention 2, comprise the following steps:
1), at voltage output end and the adjustable resistance Rx that connects between each functional chip feeder ear of mobile terminal power management chip, and resistance Rx initial value is set to 0 ohm.
2) the operational voltage value Vout that each road functional chip needs, is obtained; In the present embodiment, obtain the operational voltage value Vout that this road voltage needs to export.
3) register, arranging power management chip makes power management chip export, in a preset range, be more than or equal to the output voltage Vpm of described operational voltage value with described operational voltage value Vout difference; As current output voltage, prepare to power to the functional chip of this unlatching.
Namely the register arranging power management chip makes power management chip output and operational voltage value Vout closest and is more than or equal to the output voltage Vpm of operational voltage value Vout.
Although at present power management chip generally adopts eight bit register to arrange output voltage, and being that step-by-step movement is arranged, such as, is that stepping is arranged with 20mV, namely can only arrange 20mV, 40mV, 60mV, But consider wider usable range in the embodiment of the present invention, and following power management chip voltage arranges possible development trend; The output voltage of these needs various settings of prior save register and correspondence thereof in power management chip, and form each output voltage corresponding to register settings;
Such as, content following (only having write a part) in voltage allocation list 110:
Register arranges 0x00: output voltage is closed;
Register arranges 0x01: output voltage 20mV;
Register arranges 0x02: output voltage 25mV;
Register arranges 0x03: output voltage 30mV;
Register arranges 0x04: output voltage 50mV;
Register arranges 0x05: output voltage 80mV;
……
In upper table, ": " left side is the value that register is arranged, the output voltage that ": " the right is corresponding.
4), the register of this road output voltage of arranging the functional chip of current unlatching is Rpm, makes current output voltage be Vpm;
In the present embodiment, obtain output voltage according to Vout and be more than or equal to Vout and Rpm is set with Vout immediate magnitude of voltage Vpm and corresponding register thereof.
5), the actual voltage value Vk of functional chip feeder ear that opens of Real-time Obtaining, and the operational voltage value Vout that the functional chip of described actual voltage value Vk and this unlatching needs to be compared; If described virtual voltage Vk equals the operational voltage value Vout of the functional chip of this unlatching, then adjustable resistance Rx is not made adjustments;
If described virtual voltage Vk is greater than the operational voltage value Vout of the functional chip of this unlatching, then process is tuned up to adjustable resistance Rx, until described virtual voltage Vk equals the operational voltage value Vout of the functional chip of this unlatching, complete adjustment.Wherein, described tune up to be treated to adjustable resistance Rx adjustable resistance resistance is increased 1 ohm at every turn.
Visible, the invention provides a kind of output voltage of power management chip control method based on mobile terminal.Power management chip can be made to export various magnitude of voltage by method provided by the invention, therefore can meet the requirement of various chip for supply voltage, select various functional chip for mobile terminal and provide larger choice; Also some can be made more stable for the chip operation that supply voltage accuracy requirement is high.
Based on above-described embodiment, present invention also offers a kind of output voltage of power management chip control system based on mobile terminal, as shown in Figure 4, described system comprises:
Link control module 410, for controlling at each voltage output end of mobile terminal power management chip and an adjustable resistance of connecting respectively between each functional chip feeder ear; Specifically as described in above-mentioned steps S510.
Module 420 is set, for the output voltage of the various settings of save register and correspondence thereof in advance in the power management chip of mobile terminal in advance, and forms each output voltage corresponding to register settings; Specifically as described in above-mentioned steps S520.
Obtain and search control module 430, when need power for opening when certain functional chip, obtain the operating voltage required for functional chip of this unlatching, search in power management chip to be kept in advance in the various settings of register and the output voltage of correspondence thereof and differ minimum output voltage with the operating voltage required for this functional chip, as current output voltage, prepare to power to the functional chip of this unlatching; Specifically as described in above-mentioned steps S530.
Output voltage regulates processing module 440, for the resistance of the adjustable resistance that regulating and controlling is connected with the functional chip of this unlatching, the voltage of mobile terminal power management chip is made to output to the virtual voltage of this open function chip and the operating voltage required for the functional chip of this unlatching is consistent; Specifically as described in above-mentioned steps S540.
Further, the described output voltage of power management chip control system based on mobile terminal, wherein, obtains and searches control module and comprise:
Acquiring unit, for obtaining the operational voltage value Vout that each road functional chip needs; As detailed above.
Export setting unit, the register for arranging power management chip makes power management chip export, in a preset range, be more than or equal to the output voltage Vpm of described operational voltage value with described operational voltage value Vout difference; As current output voltage, prepare to power to the functional chip of this unlatching; As detailed above.
Further, the described output voltage of power management chip control system based on mobile terminal, wherein, described output voltage regulates processing module specifically to comprise:
Voltage setting unit, the register for this road output voltage arranging the functional chip of current unlatching is Rpm, makes current output voltage be Vpm; As detailed above.
Comparing unit, for the actual voltage value Vk of functional chip feeder ear that Real-time Obtaining is opened, and compares the operational voltage value Vout that the functional chip of described actual voltage value Vk and this unlatching needs; As detailed above.
First control module, if the operational voltage value Vout equaling the functional chip of this unlatching for described virtual voltage Vk, does not then make adjustments adjustable resistance Rx; As detailed above.
Second control module, if be greater than the operational voltage value Vout of the functional chip of this unlatching for described virtual voltage Vk, then process is tuned up to adjustable resistance Rx, until described virtual voltage Vk equals the operational voltage value Vout of the functional chip of this unlatching, complete adjustment; As detailed above.
Further, the described output voltage of power management chip control system based on mobile terminal, wherein, described tune up to be treated to adjustable resistance Rx adjustable resistance resistance is increased 1 ohm at every turn; As detailed above.
Based on above-described embodiment, present invention also offers a kind of mobile terminal embodiment, the mobile terminal of the present embodiment, as shown in Figure 5, at each voltage output end and an adjustable resistance of connecting respectively between each functional chip feeder ear of mobile terminal power management chip; The output voltage of power management chip control method based on mobile terminal described in above-described embodiment is adopted to realize.
The control method of the road voltage that the present embodiment exports for power management chip illustrates the control realizing for output voltage by technical scheme provided by the invention; In the mobile terminal of reality, power management chip carries as all functions chip on mobile terminal carries out the role that powers, is the same for each its control method of road supply voltage with the road voltage control method described in this example.
Refer to Fig. 5, the preferred embodiment of the mobile terminal shown in Fig. 5, the road voltage for power management chip is that chip one is powered; Comprise the power management chip 100, adjustable resistance 200, the chip 1 that connect in turn;
Wherein, power management chip 100, also comprises as shown in Figure 5: voltage allocation list 110, voltage arrange module 120, adjustment module 130, voltage acquisition module 140;
Voltage allocation list 110, contains power management chip 100 for the corresponding relation between these road output voltage and register settings; Although at present power management chip generally adopts eight bit register to arrange output voltage, and being that step-by-step movement is arranged, such as, is that stepping is arranged with 20mV, namely can only arrange 20mV, 40mV, 60mV, But the present invention considers wider usable range, and following power management chip voltage arranges possible development trend; Need the output voltage of the various settings of prior save register and correspondence thereof in power management chip in the present invention, and form each output voltage corresponding to register settings; Such as, content following (only having write a part) in voltage allocation list 110:
Register arranges 0x00: output voltage is closed;
Register arranges 0x01: output voltage 20mV;
Register arranges 0x02: output voltage 25mV;
Register arranges 0x03: output voltage 30mV;
Register arranges 0x04: output voltage 50mV;
Register arranges 0x05: output voltage 80mV;
……
In upper table, ": " left side is the value that register is arranged, the output voltage that ": " the right is corresponding;
Voltage arranges module 120, the operational voltage value Vout that this module is arranged as required, search in voltage allocation list 110 with Vout closest to and be more than or equal to register value Rpm corresponding to the voltage Vpm of Vout, then arranging register is that Rpm makes this road voltage export Vpm;
Adjustment module 130, this module is for regulating the resistance of the adjustable resistance 200 be connected between this road voltage output end and chip 1;
Voltage acquisition module 140, this module is for obtaining the voltage of the feeder ear of chip 1.
Refer to Fig. 6, Figure 6 shows that the principle of work process flow diagram of the mobile terminal of the embodiment of the present invention.Power management chip 100 is by controlling to make the feeder ear voltage of chip 1 be the flow process of Vout, specific as follows:
When power management chip 100 receives the instruction into chip 1 power supply, when the supply voltage of acquisition chip 1 is Vout, following step will be performed:
Step S10, adjustment module 130 regulate the resistance of adjustable resistance 200 to be 0 ohm.
Step S20, voltage arrange the operational voltage value Vout that module 120 is arranged as required, search in voltage allocation list 110 with operational voltage value Vout closest to and be more than or equal to register value Rpm corresponding to the output voltage Vpm of operational voltage value Vout, then arranging register is the output voltage Vpm that Rpm makes this road voltage and exports.
Step S30, voltage acquisition module 140 obtain the virtual voltage of the feeder ear of chip 1; Judge whether this virtual voltage equals operational voltage value Vout, if equal, setting completed for voltage, if be not equal to, performs step S40.
Step S40, regulate the resistance being connected on adjustable resistance 200 between this road voltage output end and chip 1, perform step S30 more afterwards until described virtual voltage Vk equals the operational voltage value Vout of the functional chip of this unlatching, complete adjustment.
In the embodiment of the present invention, preferably, tune up resistance for adjustment adjustable resistance is increased 1 ohm at every turn.
In sum, mobile terminal provided by the present invention and output voltage of power management chip control method thereof and system, the present invention is by the output terminal of voltage and the adjustable resistance Rx that connects between functional chip feeder ear, when needs arrange output voltage Vout, first arrange can export with Vout closest to and be more than or equal to the voltage Vpm of Vout, whether the voltage then obtaining functional chip feeder ear equals Vout, if be not equal to Vout, progressively tunes up Rx until the voltage of functional chip feeder ear equals Vout.By method provided by the invention, mobile terminal is made to add New function: the magnitude of voltage that power management chip can be made to export various script can not export, thus meet the needs that various functional chip powers, make each functional chip supply voltage on mobile terminal more stable, also have more choice for mobile terminal production firm when selecting function chip simultaneously.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1., based on an output voltage of power management chip control method for mobile terminal, it is characterized in that, comprising:
A, each voltage output end and an adjustable resistance of connecting respectively between each functional chip feeder ear at mobile terminal power management chip;
B, the in advance output voltage of the various settings of save register and correspondence thereof in advance in the power management chip of mobile terminal, and form each output voltage corresponding to register settings;
C, when certain functional chip open need power time, obtain the operating voltage required for functional chip of this unlatching, search in power management chip to be kept in advance in the various settings of register and the output voltage of correspondence thereof and differ minimum output voltage with the operating voltage required for this functional chip, as current output voltage, prepare to power to the functional chip of this unlatching;
The resistance of the adjustable resistance that D, regulating and controlling are connected with the functional chip of this unlatching, makes the voltage of mobile terminal power management chip output to the virtual voltage of this open function chip and the operating voltage required for the functional chip of this unlatching is consistent.
2., according to claim 1 based on the output voltage of power management chip control method of mobile terminal, it is characterized in that, described steps A specifically comprises:
A1, voltage output end and the adjustable resistance Rx that connects between each functional chip feeder ear at mobile terminal power management chip, and resistance Rx initial value is set to 0 ohm.
3., according to claim 2 based on the output voltage of power management chip control method of mobile terminal, it is characterized in that, described step C specifically comprises:
C1, obtain the operational voltage value Vout that each road functional chip needs;
C2, the register arranging power management chip make power management chip export, in a preset range, be more than or equal to the output voltage Vpm of described operational voltage value with described operational voltage value Vout difference; As current output voltage, prepare to power to the functional chip of this unlatching.
4., according to claim 3 based on the output voltage of power management chip control method of mobile terminal, it is characterized in that, described step D specifically comprises:
D1, the register of this road output voltage arranging the functional chip of current unlatching are Rpm, make current output voltage be Vpm;
The actual voltage value Vk of functional chip feeder ear that D2, Real-time Obtaining are opened, and the operational voltage value Vout that the functional chip of described actual voltage value Vk and this unlatching needs is compared;
If the described virtual voltage Vk of D3 equals the operational voltage value Vout of the functional chip of this unlatching, then adjustable resistance Rx is not made adjustments;
If the described virtual voltage Vk of D4 is greater than the operational voltage value Vout of the functional chip of this unlatching, then process is tuned up to adjustable resistance Rx, until described virtual voltage Vk equals the operational voltage value Vout of the functional chip of this unlatching, complete adjustment.
5. according to claim 4 based on the output voltage of power management chip control method of mobile terminal, it is characterized in that, adjustable resistance resistance is increased 1 ohm by adjustable resistance Rx tuning up be treated in described step D4 at every turn.
6., based on an output voltage of power management chip control system for mobile terminal, it is characterized in that, comprising:
Link control module, for controlling at each voltage output end of mobile terminal power management chip and an adjustable resistance of connecting respectively between each functional chip feeder ear;
Module is set, for the output voltage of the various settings of save register and correspondence thereof in advance in the power management chip of mobile terminal in advance, and forms each output voltage corresponding to register settings;
Obtain and search control module, when need power for opening when certain functional chip, obtain the operating voltage required for functional chip of this unlatching, search in power management chip to be kept in advance in the various settings of register and the output voltage of correspondence thereof and differ minimum output voltage with the operating voltage required for this functional chip, as current output voltage, prepare to power to the functional chip of this unlatching;
Output voltage regulates processing module, for the resistance of the adjustable resistance that regulating and controlling is connected with the functional chip of this unlatching, the voltage of mobile terminal power management chip is made to output to the virtual voltage of this open function chip and the operating voltage required for the functional chip of this unlatching is consistent.
7. according to claim 6 based on the output voltage of power management chip control system of mobile terminal, it is characterized in that, obtain and search control module and comprise:
Acquiring unit, for obtaining the operational voltage value Vout that each road functional chip needs;
Export setting unit, the register for arranging power management chip makes power management chip export, in a preset range, be more than or equal to the output voltage Vpm of described operational voltage value with described operational voltage value Vout difference; As current output voltage, prepare to power to the functional chip of this unlatching.
8. according to claim 6 based on the output voltage of power management chip control system of mobile terminal, it is characterized in that, described output voltage regulates processing module specifically to comprise:
Voltage setting unit, the register for this road output voltage arranging the functional chip of current unlatching is Rpm, makes current output voltage be Vpm;
Comparing unit, for the actual voltage value Vk of functional chip feeder ear that Real-time Obtaining is opened, and compares the operational voltage value Vout that the functional chip of described actual voltage value Vk and this unlatching needs;
First control module, if the operational voltage value Vout equaling the functional chip of this unlatching for described virtual voltage Vk, does not then make adjustments adjustable resistance Rx;
Second control module, if be greater than the operational voltage value Vout of the functional chip of this unlatching for described virtual voltage Vk, then process is tuned up to adjustable resistance Rx, until described virtual voltage Vk equals the operational voltage value Vout of the functional chip of this unlatching, complete adjustment.
9., according to claim 6 based on the output voltage of power management chip control system of mobile terminal, it is characterized in that, described tune up to be treated to adjustable resistance Rx adjustable resistance resistance is increased 1 ohm at every turn.
10. a mobile terminal, is characterized in that, at each voltage output end and an adjustable resistance of connecting respectively between each functional chip feeder ear of mobile terminal power management chip; The output voltage of power management chip control method based on mobile terminal described in any one of claim 1-5 is adopted to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510168048.8A CN104808730B (en) | 2015-04-10 | 2015-04-10 | Mobile terminal and its output voltage of power management chip control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510168048.8A CN104808730B (en) | 2015-04-10 | 2015-04-10 | Mobile terminal and its output voltage of power management chip control method and system |
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| CN105050172B (en) * | 2015-08-03 | 2018-09-18 | Tcl移动通信科技（宁波）有限公司 | A kind of configuration method of power management chip, system and mobile terminal |
| CN109245736A (en) * | 2018-08-27 | 2019-01-18 | 惠州Tcl移动通信有限公司 | Mobile terminal power amplifier setting method, device, computer equipment and storage medium |
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| CN104808730B (en) | 2017-06-06 |
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