CN116054307A

CN116054307A - Power supply control system and electronic equipment

Info

Publication number: CN116054307A
Application number: CN202210891753.0A
Authority: CN
Inventors: 马波; 王朝; 吉庆; 王丰
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-05-02
Anticipated expiration: 2042-07-27
Also published as: CN116054307B

Abstract

The application discloses a power supply control system and electronic equipment, and relates to electronic circuit technology. In the power supply control system, the switch circuit and the boost charge pump are used for replacing a battery to supply power to the high-voltage LDO module, so that the extra power consumption can be reduced, the efficiency of the high-voltage LDO module is improved, the duration of the battery is prolonged, meanwhile, the cost is lower, and the scheme is simpler to implement.

Description

Power supply control system and electronic equipment

Technical Field

The present disclosure relates to the field of electronic circuits, and more particularly, to a power control system and an electronic device.

Background

With the development of terminal technology, the situation that users use electronic devices to process daily transactions is also becoming more common. Under the circumstance that a user frequently uses a mobile phone, the battery endurance of the electronic device gradually becomes one of the standards for evaluating the performance of the electronic device. The electronic device often supplies the power of the battery to different operating units on the electronic device, such as processors, radio frequency devices, and camera modules, etc., via a power management unit (power management unit, PMU) so that these operating units can function properly.

The PMU may include a low dropout linear regulator (LDO), which may be configured to convert an input voltage into a stable output voltage, so that the operating unit may operate based on the stable output voltage. However, when the input voltage is higher, the difference between the output voltage converted by the LDO and the input voltage is larger, the power consumed additionally is higher, and the efficiency of the LDO is lower. Therefore, how to make the LDO improve the efficiency and reduce the power consumption under the condition of high voltage input becomes a current urgent problem to be solved.

Disclosure of Invention

The application provides a power control system and electronic equipment in this power control system to switch circuit + boost charge pump replace the battery to supply power for the high-voltage LDO module, can reduce extra consumption, promote the efficiency of high-voltage LDO module, promote the time that the battery is continued voyage, the cost is also lower simultaneously, and the scheme is implemented also simpler.

In a first aspect, the present application provides a power control system, the power control system including a power management unit PMU and a boost charge pump, the PMU including a switching circuit, a first LDO module and a second LDO module, wherein: the input end of the switch circuit is connected with the battery. The switching circuit is used for transmitting the electric energy in the battery to the first LDO module and the boost charge pump. The output end of the switch circuit is connected with the input end of the first LDO module and the input end of the boost charge pump. The boost charge pump is used for boosting the voltage output by the switching circuit. The output end of the boost charge pump is connected with the input end of the second LDO module. The first LDO module is used for providing voltage required by the low-voltage working unit in normal working. The second LDO module is used for providing the voltage required by the normal operation of the high-voltage operation unit.

In one embodiment, the output voltage of the first LDO module is less than a first threshold.

In one embodiment, the output voltage of the second LDO module is greater than a first threshold.

In one embodiment, the low voltage work cell is a work cell that converts an image into binary data.

In one embodiment, the high voltage working unit comprises a motor and/or a vibration motor in the camera module.

In one embodiment, the first threshold is 2 volts.

In one embodiment, the output voltage of the switching circuit is less than the input voltage of the switching circuit.

In one embodiment, the output voltage of the second LDO module is less than the input voltage of the second LDO module.

In a second aspect, the present application provides a power control system including a battery, a power management unit PMU including a switching circuit, a first LDO module, and a second LDO module, and a boost charge pump, wherein: the input end of the switch circuit is connected with the battery. The switching circuit is used for transmitting the electric energy in the battery to the first LDO module and the boost charge pump. The output end of the switch circuit is connected with the input end of the first LDO module and the input end of the boost charge pump. The boost charge pump is used for boosting the voltage output by the switching circuit. The output end of the boost charge pump is connected with the input end of the second LDO module. The first LDO module is used for providing voltage required by the low-voltage working unit in normal working. The second LDO module is used for providing the voltage required by the normal operation of the high-voltage operation unit.

In a third aspect, the present application provides a power control system including a battery and a power management unit PMU including a boost charge pump, a switching circuit, a first LDO module, and a second LDO module, wherein: the input end of the switch circuit is connected with the battery. The switching circuit is used for transmitting the electric energy in the battery to the first LDO module and the boost charge pump. The output end of the switch circuit is connected with the input end of the first LDO module and the input end of the boost charge pump. The boost charge pump is used for boosting the voltage output by the switching circuit. The output end of the boost charge pump is connected with the input end of the second LDO module. The first LDO module is used for providing voltage required by the low-voltage working unit in normal working. The second LDO module is used for providing the voltage required by the normal operation of the high-voltage operation unit.

Drawings

Fig. 1 is a schematic diagram of a power control system 100 according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a power control system 200 according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of an equivalent circuit according to an embodiment of the present disclosure;

fig. 4 is a schematic hardware structure of an electronic device 100 according to an embodiment of the present application.

Detailed Description

The terminology used in the following embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application to the specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary. It should also be understood that the term "and/or" as used in this application is meant to encompass any or all possible combinations of one or more of the listed items. In the present embodiments, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

First, a power control system 100 provided in an embodiment of the present application will be described.

The power control system 100 can be applied to electronic devices such as mobile phones and tablet computers. The electronic device 100 is subsequently used in a unified manner to represent the above-described electronic device. Not limited to a cell phone, tablet computer, electronic device 100 may also be a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular telephone, a personal digital assistant (personal digital assistant, PDA), an augmented reality (augmented reality, AR) device, a Virtual Reality (VR) device, an artificial intelligence (artificial intelligence, AI) device, a wearable device, a vehicle-mounted device, a smart home device, and/or a smart city device, and the specific type of the electronic device is not particularly limited in the embodiments of the present application.

The battery according to the following embodiments is referred to as a battery of the electronic device 100 unless otherwise specified.

Referring to fig. 1, fig. 1 schematically illustrates a power control system 100 according to an embodiment of the present application.

As shown in fig. 1, the power control system 100 may include: a battery and power management unit (power management unit, PMU). Wherein the battery may be used to provide electrical power for the proper operation of the various operating units on the electronic device 100. The PMU may be configured to distribute the power of the battery to different working units according to the power requirements of the different working units on the electronic device 100 during operation, so as to ensure that the working units on the electronic device 100 can work normally. By way of example, the work units on the electronic device 100 may include: processors, radio frequency devices, wireless communication modules, camera modules, and the like.

Referring to fig. 1, the PMU in the power control system 100 may include: a first low dropout linear regulator (LDO) module, a second LDO module, and a switching circuit. In this example, the switching circuit may be a Buck (Buck) circuit. The first and second LDO modules may be used to convert an input voltage to a stable output voltage (i.e., the output voltage does not vary with variations in the input voltage) such that a unit of operation on the electronic device 100 may operate based on the stable output voltage, and the Buck circuit may be used to transfer power in the battery to the first LDO module, which output voltage is lower than the input voltage (i.e., the battery voltage). Wherein:

input port V in Buck circuit _in1 Is connected with a battery, buck electricityOutput port V of the way _out1 Input port V of the first LDO module _in2 Is connected with each other. The first LDO module may pass through the output port V _out2 The output voltage is supplied to a low-voltage operation unit in the electronic device 100. Input port V of the second LDO module _in3 Connected with the battery, the second LDO module can pass through the output port V _out3 The output voltage is supplied to a high-voltage operation unit in the electronic apparatus 100. The first LDO module passes through the output port V _out2 The output voltage may be less than a first threshold, output port V _out2 The output voltage is smaller than the input port V _in2 The received voltage, therefore, the first LDO module may also be referred to as a low-voltage LDO module, and the voltage output by the first LDO module may be referred to as a low-output voltage, mainly 1.8V, 1.2V, etc.; the second LDO module is connected with the output port V _out3 The output voltage is greater than or equal to a first threshold value, and the output port V _out3 The output voltage is smaller than the input port V _in3 The received voltage, and thus the second LDO module may also be referred to as a high voltage LDO module, and the voltage output by the second LDO module may be referred to as a high output voltage, mainly 2.8V, 3V, etc. The first threshold may be 2V, or the first threshold may have other values, which is not limited in this application. The low-voltage operation unit may be an operation unit including, but not limited to, converting an image into binary data, etc., and the high-voltage operation unit may be a motor including, but not limited to, a motor in a camera module, a vibration motor, a memory module, etc.

For example, taking the first threshold value as 2V as an example, when the working unit on the electronic device 100 is in the working state, the working process of each module shown in fig. 1 may be as follows:

the supply voltage of the battery may be a first voltage. Typically, the first voltage may be 3.8V. The battery can pass through the input port V of the Buck circuit _in1 The first voltage is supplied to the Buck circuit. When the Buck circuit is in a working state, the Buck circuit can reduce the first voltage to the second voltage. The Buck circuit may then pass through output port V _out1 The second voltage is output, and the first LDO module can pass through the input port V _in2 The second voltage is taken as the first voltageAn input voltage of the LDO module. When the first LDO module is in an operating state, the first LDO module may reduce the second voltage to a stable third voltage, which may be 1.8V less than the first threshold, and the third voltage may also be referred to as a low output voltage. Next, the first LDO module may pass through the output port V _out2 The third voltage is supplied to the low-voltage operation unit on the electronic device 100 so that the low-voltage operation unit can normally operate based on the third voltage.

The battery can pass through the input port V of the second LDO _in3 The first voltage is supplied to the second LDO module. When the second LDO module is in an operating state, the second LDO module may reduce the first voltage to a stable fourth voltage, which may be 2.8V greater than the first threshold, and the fourth voltage may also be referred to as a high output voltage. The second LDO module may pass through the output port V _out3 The fourth voltage is supplied to the high-voltage operation unit on the electronic device 100 so that the high-voltage operation unit can normally operate based on the fourth voltage.

Not limited to the above example, the power supply voltage of the battery may be other specifications, for example, 3.6V-4.4V. The second voltage, the third voltage, and the fourth voltage are not limited to the above examples, and may be other values, that is, specific values of the voltages are not limited in the embodiments of the present application.

As can be seen from the above flow, since the output voltage of the second LDO module is a stable value, that is, the output voltage of the second LDO module does not change with the change of the input voltage (the same applies to the first LDO module), when the battery voltage is higher, the difference between the output voltage converted by the second LDO module and the battery voltage is larger, the power consumed additionally is higher, the efficiency of the second LDO module is lower, and the battery service time of the electronic device 100 is shorter.

Accordingly, embodiments of the present application provide a power control system 200.

The power control system 200 can be applied to the electronic device 100 such as a mobile phone, a tablet computer, and the like. For the type of the electronic device 100 and the related description, reference may be made to the description in the foregoing embodiments, and the description is omitted here.

Referring to fig. 2, fig. 2 schematically illustrates a power control system 200 according to an embodiment of the present application.

As shown in fig. 2, the power control system 200 may include: PMU and boost charge pump. For the description of the PMU, reference may be made to the description in the foregoing embodiments, and the description is omitted here. The PMU in the power control system 200 may include: the switching circuit comprises a first LDO module, a second LDO module and a switching circuit. In this example, the switching circuit may be a Buck circuit. For the description of the first LDO module and the second LDO module, reference may be made to the description in the foregoing embodiments, which is not repeated here. The switching circuit may be used to transfer power in the battery to the first LDO module and the boost charge pump with an output voltage lower than the input voltage (i.e., the battery voltage). The boost charge pump may be used to output a voltage higher than the input voltage. For example, a 1.5X boost charge pump may output a voltage 1.5 times higher than the input voltage, and a 2.0X boost charge pump may output a voltage 2 times higher than the input voltage. In this example, the boost charge pump is used to boost the voltage output by the switching circuit, that is, the output voltage of the switching circuit is the input voltage of the boost charge pump.

Referring to fig. 2, the connection relationship between the above devices may be as follows:

input port V in Buck circuit _in1 An output port V of the Buck circuit connected with the battery _out1 :1. input port V of the first LDO module _in2 Are connected. 2. Input port V of boost charge pump _in4 Is connected with each other. The first LDO module may pass through the output port V _out2 The output voltage is supplied to a low-voltage operation unit in the electronic device 100. Input port V of the second LDO module _in3 And the output port V of the boost charge pump _out4 Connected with the second LDO module through an output port V _out3 The output voltage is supplied to a high-voltage operation unit in the electronic apparatus 100. The first LDO module passes through the output port V _out2 The output voltage may be less than a first threshold, output port V _out2 The output voltage is smaller than the input port V _in2 Received voltage, thusThe LDO module can also be called a low-voltage LDO module, and the voltage output by the first LDO module can be called a low-output voltage, mainly 1.8V, 1.2V and the like; the second LDO module is connected with the output port V _out3 The output voltage is greater than or equal to a first threshold value, and the output port V _out3 The output voltage is smaller than the input port V _in3 The received voltage, and thus the second LDO module may also be referred to as a high voltage LDO module, and the voltage output by the second LDO module may be referred to as a high output voltage, mainly 2.8V, 3V, etc. For an example of the value of the first threshold, reference may be made to the description in the foregoing embodiment, and details are not repeated here. For the description and examples of the low-voltage operation unit and the high-voltage operation unit, reference may be made to the description in the foregoing embodiments, and no further description is given here.

For example, taking the first threshold value as 2V as an example, when the working unit on the electronic device 100 is in the working state, the working process of each device shown in fig. 2 may be as follows:

the supply voltage of the battery may be a first voltage. As shown in the foregoing example of the power control system 100, the first voltage may be 3.8V. The battery can pass through the input port V of the Buck circuit _in1 The first voltage is supplied to the Buck circuit. When the Buck circuit is in a working state, the Buck circuit can reduce the first voltage to the second voltage. The Buck circuit may then pass through output port V _out1 The second voltage is output, and the first LDO module can pass through the input port V _in2 The second voltage is used as the input voltage of the first LDO module. When the first LDO module is in an operating state, the first LDO module may reduce the second voltage to a stable third voltage, which may be 1.8V less than the first threshold, and the third voltage may also be referred to as a low output voltage. Next, the first LDO module may pass through the output port V _out2 The third voltage is supplied to the low-voltage operation unit on the electronic device 100 so that the low-voltage operation unit can normally operate based on the third voltage.

Meanwhile, the Buck circuit can pass through the output port V _out1 The second voltage is output, and the boost charge pump can pass through the input port V _in4 Will be secondThe voltage is used as the input voltage of the boost charge pump. When the boost charge pump is in an operating state, the boost charge pump may boost the second voltage to a fifth voltage, which may be 3.2V. The boost charge pump may pass through output port V _out4 The fifth voltage is output, and the second LDO module can pass through the input port V _in3 And taking the fifth voltage as the input voltage of the second LDO module. When the second LDO module is in an operating state, the second LDO module may reduce the fifth voltage to a stable fourth voltage, which may be 2.8V greater than the first threshold, and the fourth voltage may be referred to as a high output voltage. The second LDO module may pass through the output port V _out3 The fourth voltage is supplied to the high-voltage operation unit on the electronic device 100 so that the high-voltage operation unit can normally operate based on the fourth voltage.

It should be noted that the specifications (for example, 1.5X, 2.0X, etc.) of the boost charge pump may be selected based on the output voltage of the Buck circuit, so that the fifth voltage output by the boost charge pump is lower than the battery voltage, and the second LDO module may make the high voltage operating unit work normally based on the fourth voltage output by the fifth voltage.

Not limited to the above example, the power supply voltage of the battery may be other specifications, for example, 3.6V-4.4V. The second voltage, the third voltage, the fourth voltage, and the fifth voltage are not limited to the above examples, and may be other values, that is, the specific values of the voltages are not limited in the embodiment of the present application.

In some examples, the boost charge pump may also be provided in the PMU as part of the PMU. The port connection may refer to the description of the embodiment shown in fig. 2, and will not be described herein.

In some examples, power control system 200 may include a battery, a PMU, and a boost charge pump. The connection relationship between the ports of the battery, the PMU and the boost charge pump may be described with reference to the embodiment shown in fig. 2, and will not be described herein.

In some examples, power control system 200 may include a battery and a PMU in which a boost charge pump may be located. That is, the PMU includes a boost charge pump, a switching circuit, a first LDO module, and a second LDO module. The connection relationship between the ports of the battery, the PMU and the boost charge pump may be described with reference to the embodiment shown in fig. 2, and will not be described herein.

As can be seen from the above description of the power control system 100 and the description of the power control system 200, the power control system 200 provided in the embodiment of the present application has the following differences compared to the power control system 100:

(1) In comparison to the power control system 100 shown in fig. 1, in the power control system 200 provided in the embodiment of the present application, the output voltage of the Buck circuit supplies power to the boost charge pump in addition to the first LDO module.

(2) In contrast to the power control system 100 shown in fig. 1 described above, in the power control system 200 provided in the embodiment of the present application, the input voltage of the second LDO module is supplied by the output voltage of the boost charge pump, instead of the battery voltage. Thus, it is understood that the equivalent circuit of the Buck circuit, the boost charge pump, and the second LDO module in the power control system 200 may be as shown in fig. 3.

It should be appreciated that the efficiency of the Buck circuit may reach 85% -95% and the efficiency of the boost charge pump may reach 95% or more. The output voltage of the boost charge pump is smaller than the battery voltage, and the second LDO module can obtain the voltage meeting the normal working condition of the high-voltage working unit based on the voltage output by the boost charge pump. Therefore, the embodiment of the application is based on the Buck circuit and the boost charge pump to replace a battery to supply power for the second LDO module, so that the extra power consumption can be reduced, the efficiency of the second LDO module is improved, the duration of the battery is prolonged, meanwhile, the cost is lower, and the scheme is simpler to implement.

Illustratively, the following power consumption calculations may intuitively demonstrate the difference between the power consumption of the second LDO module in the power control system 100 shown in FIG. 1 and the power consumption of the second LDO module in the power control system 200 shown in FIG. 2:

power consumption of the second LDO module in the power control system 100: the second LDO module is operated with an average current of 120 milliamp (mA), and the electronic device 100 is used for 6 hours as an example. In the example of the embodiment shown in fig. 1, the battery voltage is 3.8V. In this example, the input voltage of the second LDO module is 3.8V. If the output voltage of the second LDO module is 2.8V, the power consumption is as follows:

(3.8-2.8)÷3.8×120×6＝189(mAh)

power consumption of the second LDO module in the power control system 200: taking the second LDO module as an example, the average current is 120Ma when operating, and the time for using the electronic device 100 is 6 hours. In the example of the embodiment shown in fig. 2, the battery voltage is 3.8V. After the battery voltage passes through the Buck circuit and the boost charge pump, the output voltage can be 3.2V. The output voltage 3.2V is the input voltage of the second LDO module. Because the output voltage of the second LDO module is a stable value, that is, the output voltage of the second LDO module does not change with the change of the input voltage, the output voltage of the second LDO module is still regarded as 2.8V, and the loss of power consumption is:

(3.2-2.8)÷3.2×120×6＝90(mAh)

if the efficiency of the Buck circuit is 88% and the efficiency of the boost charge pump is 95%, compared to the power control system 100, the power consumption saved by the power control system 200 provided in the embodiment of the present application may be:

(189-90)×88％×95％＝83.2(mAh)

next, a hardware structure of the electronic device 100 provided in the embodiment of the present application is described.

Referring to fig. 4, fig. 4 schematically illustrates a hardware structure of an electronic device 100 according to an embodiment of the present application.

As shown in fig. 4, the electronic device 100 may include: processor 401, battery 401A, power Management Unit (PMU) 401B, charge management module 401C, USB interface 401D, memory 402, wireless communication module 403, display 404, camera 405, audio module 406, microphone 407, motor 408, and sensor module 409. Wherein:

it is to be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, electronic device 100 may also include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 401 may include one or more processor units, for example, the processor 401 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors. The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 401 for storing instructions and data. In some embodiments, the memory in the processor 401 is a cache memory. The memory may hold instructions or data that has just been used or recycled by the processor 401. If the processor 401 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 401 is reduced, thus improving the efficiency of the system.

In some embodiments, the processor 401 may include one or more interfaces. The interfaces may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuit sound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interface, a mobile industry processor interface (mobile industry processor interface, MIPI), a general-purpose input/output (GPIO) interface, and a subscriber identity module (subscriber identity module, SIM) interface.

The power management unit 401B is used for connecting the battery 401A, the charge management module 401C and the processor 401. The power management unit 401B receives input from the battery 401A and/or the charge management module 401C, and supplies power to the processor 401, the memory 402, the display 404, the camera 405, the wireless communication module 403, and the like. The power management unit 401B may also be configured to detect parameters such as battery capacity, battery cycle number, battery health (leakage, impedance), etc. In other embodiments, the power management unit 401B may also be provided in the processor 401. In other embodiments, the power management unit 401B and the charging management module 401C may also be disposed in the same device.

For a specific description of the power management unit 401B, reference may be made to the description in the foregoing embodiment, and a detailed description is omitted here.

The charge management module 401C is configured to receive a charge input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charge management module 401C may receive a charging input of the wired charger through the USB interface 401D. In some wireless charging embodiments, the charge management module 401C may receive wireless charging input through a wireless charging coil of the electronic device 100. The charging management module 401C may also supply power to the electronic device 100 through the power management unit 401B while charging the battery 401A.

The USB interface 401D is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 401D may be used to connect a charger to charge the electronic device 100, and may also be used to transfer data between the electronic device 100 and a peripheral device. And can also be used for connecting with a headset, and playing audio through the headset. The interface may also be used to connect other electronic devices, such as AR devices, etc.

It should be understood that the interfacing relationship between the modules illustrated in the embodiments of the present invention is only illustrative, and is not meant to limit the structure of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also use different interfacing manners, or a combination of multiple interfacing manners in the foregoing embodiments.

A memory 402 is coupled to the processor 401 for storing various software programs and/or sets of instructions. In particular implementations, memory 402 may include volatile memory (RAM), such as Random Access Memory (RAM); non-volatile memory (non-volatile memory) such as ROM, flash memory (flash memory), hard Disk Drive (HDD) or solid state Disk (Solid State Drives, SSD) may also be included; memory 402 may also include a combination of the above types of memory. The memory 402 may also store some program code such that the processor 401 invokes the program code stored in the memory 402 to implement the method of implementing the embodiments of the present application in the electronic device 100. The memory 402 may store an operating system, such as an embedded operating system, for example uCOS, vxWorks, RTLinux.

The wireless communication module 403 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc., applied to the electronic device 100. The wireless communication module 403 may be one or more devices integrating at least one communication processing module. The wireless communication module 403 receives electromagnetic waves via an antenna, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 401. The wireless communication module 403 may also receive a signal to be transmitted from the processor 401, frequency modulate and amplify the signal, and convert the signal to electromagnetic waves through an antenna to radiate. In some embodiments, the electronic device 100 may also probe or scan for devices in the vicinity of the electronic device 100 by transmitting signals through a bluetooth module (not shown in fig. 4), a WLAN module (not shown in fig. 4) in the wireless communication module 403, and establish a wireless communication connection with the nearby devices to transmit data. The bluetooth module may provide a solution including one or more bluetooth communications of classical bluetooth (BR/EDR) or bluetooth low energy (bluetooth low energy, BLE), and the WLAN module may provide a solution including one or more WLAN communications of Wi-Fi direct, wi-Fi LAN, or Wi-Fi softAP, among others.

The display 404 may be used to display images, video, etc. The display 404 may include a display panel. The display panel may employ a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED) or an active-matrix organic light-emitting diode (matrix organic light emitting diode), a flexible light-emitting diode (flex), a mini, a Micro led, a Micro-OLED, a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED), or the like. In some embodiments, electronic device 100 may include 1 or N displays 404, N being a positive integer greater than 1.

The camera 405 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image onto the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a Complementary Metal Oxide Semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, which is then transferred to the ISP to be converted into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV, or the like format. In some embodiments, the electronic device 100 may include 1 or N cameras 405, N being a positive integer greater than 1.

The audio module 406 may be used to convert digital audio information to an analog audio signal output, and may also be used to convert an analog audio input to a digital audio signal. The audio module 406 may also be used to encode and decode audio signals. In some embodiments, the audio module 406 may also be provided in the processor 401, or part of the functional modules of the audio module 406 may be provided in the processor 401.

The microphone 407, which may also be referred to as a "microphone" or "microphone", may be used to collect a sound signal in the environment surrounding the electronic device, then convert the sound signal into an electrical signal, and then subject the electrical signal to a series of processes, such as analog-to-digital conversion, to obtain an audio signal in a digital form that may be processed by the processor 401 of the electronic device. When making a call or transmitting voice information, the user can sound near the microphone 407 through the mouth, inputting a sound signal to the microphone 407. The electronic device 100 may be provided with at least one microphone 407. In other embodiments, the electronic device 100 may be provided with two microphones 407, and may implement a noise reduction function in addition to collecting sound signals. In other embodiments, the electronic device 100 may also be provided with three, four or more microphones 407 to enable collection of sound signals, noise reduction, identification of sound sources, directional recording functions, etc.

The motor 408 may generate a vibration alert. The motor 408 may be used for incoming call vibration alerting as well as for touch vibration feedback. For example, touch operations acting on different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor 408 may also correspond to different vibration feedback effects by touch operations applied to different areas of the display screen 404. Different application scenarios (such as time reminding, receiving information, alarm clock, game, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The sensor module 409 may include a plurality of sensing devices, for example, a fingerprint sensor (not shown), a touch sensor (not shown), and the like. Touch sensors may also be referred to as "touch devices". The touch sensor may be disposed on the display screen 404, and the touch sensor and the display screen 404 form a touch screen, which is also referred to as a "touch screen". The touch sensor may be used to detect touch operations acting on or near it.

It should be understood that fig. 4 is only for exemplarily explaining a hardware structure of the electronic device 100 provided in the embodiment of the present application, and does not constitute any limitation on the electronic device 100.

As used in the above embodiments, the term "when …" may be interpreted to mean "if …" or "after …" or "in response to determination …" or "in response to detection …" depending on the context. Similarly, the phrase "at the time of determination …" or "if detected (a stated condition or event)" may be interpreted to mean "if determined …" or "in response to determination …" or "at the time of detection (a stated condition or event)" or "in response to detection (a stated condition or event)" depending on the context.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), etc.

Those of ordinary skill in the art will appreciate that implementing all or part of the above-described method embodiments may be accomplished by a computer program to instruct related hardware, the program may be stored in a computer readable storage medium, and the program may include the above-described method embodiments when executed. And the aforementioned storage medium includes: ROM or random access memory RAM, magnetic or optical disk, etc.

Claims

1. The utility model provides a power control system, its characterized in that, power control system includes power management unit PMU and boost charge pump, including switching circuit, first LDO module and second LDO module in the PMU, wherein:

the input end of the switch circuit is connected with the battery; the switching circuit is used for transmitting the electric energy in the battery to the first LDO module and the boost charge pump;

the output end of the switch circuit is connected with the input end of the first LDO module and the input end of the boost charge pump; the boost charge pump is used for boosting the voltage output by the switching circuit;

the output end of the boost charge pump is connected with the input end of the second LDO module;

the first LDO module is used for providing the voltage required by the normal operation of the low-voltage working unit;

the second LDO module is used for providing the voltage required by the normal operation of the high-voltage operation unit.

2. The power control system of claim 1, wherein an output voltage of the first LDO module is less than a first threshold.

3. The power control system of claim 1, wherein an output voltage of the second LDO module is greater than a first threshold.

4. The power control system of claim 1, wherein the low voltage work unit is a work unit that converts an image into binary data.

5. The power control system of claim 1, wherein the high voltage work unit comprises a motor and/or a vibration motor in a camera module.

6. The power control system of claim 1, wherein the first threshold is 2 volts.

7. The power control system of claim 1, wherein an output voltage of the switching circuit is less than an input voltage of the switching circuit.

8. The power control system of claim 1, wherein an output voltage of the second LDO module is less than an input voltage of the second LDO module.

9. The utility model provides a power control system, its characterized in that, power control system includes battery, power management unit PMU and boost charge pump, including switching circuit, first LDO module and second LDO module in the PMU, wherein:

10. The utility model provides a power control system, its characterized in that, power control system includes battery and power management unit PMU, including boost charge pump, switching circuit, first LDO module and second LDO module in the PMU, wherein: