Power supply devices and electronic equipment

Abstract

The present disclosure relates to the technical field of electronic equipment, and specifically provides a power supply device and an electronic device. The power supply device is applied to an electronic device, and the power supply device includes: a transformer module, including multiple transformer sub-modules, the input ends of the multiple transformer sub-modules are connected to the power circuit of the electronic device, the transformer sub-module is used to transform the supply voltage of the power circuit, and the output ends of the multiple transformer sub-modules are correspondingly connected to the power supply circuits of the camera module of the electronic device. The power supply device disclosed in the present disclosure optimizes the power supply circuit of the camera module, reduces the wiring difficulty and complexity of the power supply circuit of the camera module, optimizes the power supply circuit structure, and facilitates the flexible arrangement of the camera module architecture.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to a power supply device and electronic equipment. Background Art

[0002] With the advancement of mobile imaging technology, the number of cameras in smartphone camera modules is increasing. To meet imaging requirements, each camera requires multiple power supply circuits. For example, a camera module with four cameras often requires more than 20 power supply circuits. Therefore, the design of power supply circuits for multi-camera modules is an important research direction. Summary of the Invention

[0003] In order to realize the power supply circuit design for multiple cameras, the embodiments of the present disclosure provide a power supply device and an electronic device.

[0004] In a first aspect, an embodiment of the present disclosure provides a power supply device for use in an electronic device, the power supply device comprising:

[0005] The transformer module includes multiple transformer sub-modules, the input ends of the multiple transformer sub-modules are connected to the power supply circuit of the electronic device, the transformer sub-modules are used to transform the supply voltage of the power supply circuit, and the output ends of the multiple transformer sub-modules are correspondingly connected to the power supply circuits of the camera module of the electronic device.

[0006] In some embodiments, the plurality of transformer submodules include at least one first transformer submodule and at least one second transformer submodule;

[0007] The input end of the first transformer submodule is connected to the power supply circuit, and is used to transform the supply voltage to obtain a first output voltage;

[0008] The input end of the second transformer submodule is connected to the output end of the first transformer submodule for performing voltage transformation on the first output voltage. The output end of the second transformer submodule is connected to the power supply circuit of the camera module.

[0009] In some embodiments, the first transformer submodule includes: a three-level transformer circuit and / or a charge pump transformer circuit.

[0010] In some embodiments, the second transformer submodule includes a low voltage difference linear transformer circuit.

[0011] In some embodiments, the power supply device further includes:

[0012] A control module is connected to the voltage transformation module, and the control module includes a reference circuit, which is used to control the output voltage of each of the voltage transformation sub-modules according to the voltage reference of the reference circuit.

[0013] In some embodiments, the control module further includes a storage circuit, wherein the storage circuit stores control instructions, and the control module controls the output voltage of each of the transformer sub-modules according to the control instructions and the voltage reference.

[0014] In some embodiments, the output end of each transformer sub-module is provided with a detection circuit, and the detection circuit is used to detect the current and / or temperature of the output end of the transformer sub-module.

[0015] In some embodiments, the electronic device includes a plurality of the camera modules, each of the camera modules includes a plurality of the power supply circuits, and the output ends of the plurality of transformer submodules are connected to at least one power supply circuit of at least one camera module.

[0016] In some embodiments, the power supply circuit of the electronic device includes a main power supply circuit.

[0017] In some embodiments, the power supply circuit of the electronic device includes a main power supply circuit and a voltage regulation circuit.

[0018] In some embodiments, the power supply device is a power supply chip.

[0019] In a second aspect, an embodiment of the present disclosure provides an electronic device, comprising the power supply device according to any embodiment of the first aspect.

[0020] The power supply device of the disclosed embodiment can be applied to electronic devices. The power supply device includes a transformer module, which includes multiple transformer sub-modules. The input ends of the multiple transformer sub-modules are connected to the power circuit of the electronic device, and the output ends are correspondingly connected to the power supply circuits of the camera modules of the electronic device. The transformer sub-modules are used to transform the supply voltage of the power supply circuit. The power supply device disclosed in the present invention can power multiple camera modules, reduce the wiring difficulty and complexity of the camera module power supply circuit, optimize the power supply circuit structure, and facilitate the flexible layout of the camera module architecture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 is a circuit structure diagram of a power supply device according to some embodiments of the present disclosure.

[0023] Figure 2 1 is a circuit structure diagram of the first transformer submodule in some embodiments of the present disclosure.

[0024] Figure 3 1 is a circuit structure diagram of the first transformer submodule in some embodiments of the present disclosure.

[0025] Figure 4 It is a structural block diagram of a power supply device according to some embodiments of the present disclosure.

[0026] Figure 5 is a structural block diagram of an electronic device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0027] The technical solutions of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure. In addition, the technical features involved in the different embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

[0028] With the development of smartphones, the imaging system has become one of the most important features of mobile phones. In pursuit of the ultimate imaging experience, the number of cameras in smartphones has increased. For example, some smartphone imaging systems include multiple cameras such as main camera, wide-angle camera, telephoto camera, macro camera, and front camera. Some phones even include a wide-angle camera on the front. In other words, smartphones generally include 4 to 6 cameras.

[0029] To achieve imaging, each camera must meet multiple power supply circuit requirements, such as those for the photosensitive element, digital circuits, analog circuits, OIS (Optically Identifying System) circuits, and VCM (Voice Coil Motor). A multi-camera imaging system will require more than 20 power supply circuits. In the related art, there is no circuit architecture for unified power supply for camera modules, which complicates the wiring of the power supply circuits and increases the difficulty of design.

[0030] Based on the defects existing in the above-mentioned related technologies, the embodiments of the present disclosure provide a power supply device and an electronic device, which aim to optimize the power supply circuit of the camera module and simplify the design of the power supply circuit.

[0031] In a first aspect, an embodiment of the present disclosure provides a power supply device, which can be applied to an electronic device to provide power to a camera module of the electronic device.

[0032] In some embodiments, the power supply device of the present disclosure includes a voltage conversion module, which includes multiple voltage conversion sub-modules. The voltage conversion sub-modules can be voltage conversion circuit modules such as DC / DC and LDO, which can realize voltage conversion processing of the input voltage.

[0033] The input terminals of the multiple transformer submodules are connected to the power supply circuit of the electronic device. The power supply circuit can refer to the system's main power supply circuit or a voltage-regulating circuit that transforms the main power supply circuit and outputs the voltage, which is not limited in this disclosure. The multiple transformer submodules can receive a supply voltage from the power supply circuit and perform voltage transformation such as stepping up, stepping down, or stabilizing the supply voltage.

[0034] The output terminals of the multiple transformer submodules are connected to the power supply circuits of the camera module of the electronic device. It is understood that electronic devices, such as smartphones and tablets, include at least one camera module, which often requires at least one camera module to enable functions such as taking photos or making video calls.

[0035] The camera module includes multiple components, such as the photosensitive element, OIS (Optical Image Stabilization) element, and VCM element, all of which require power. It also includes digital and analog circuits, requiring multiple power supplies. Furthermore, these multiple power supply circuits often require different voltages. Therefore, each transformer submodule transforms the power supply voltage based on the load requirements connected to the output terminal, and then outputs it to the corresponding power supply circuit to achieve power supply.

[0036] Figure 1 The circuit diagram of the power supply device of the present disclosure is shown below. Figure 1 The power supply device of the present disclosure is described in detail.

[0037] In this embodiment, the electronic device takes a smart phone as an example, and the smart phone includes two rear cameras and one front camera, that is, Figure 1 The illustrated cameras 10 and 20 are two front-facing cameras, and camera 30 is a rear-facing camera. In this embodiment, the power supply circuit parameters for the two rear-facing cameras are identical, meaning that both cameras 10 and 20 include five power supply circuits: an analog signal circuit (aVDD), a digital signal circuit (dVDD), an I / O interface circuit (I / O), a VCM circuit (AF), and an anti-shake circuit (OIS). The front-facing camera, however, lacks an OIS circuit compared to the rear-facing camera, meaning that camera 30 includes four power supply circuits in addition to the OIS circuit.

[0038] In this embodiment, the power supply device includes a transformer module 100, which includes a plurality of transformer submodules, which include at least one first transformer submodule and at least one second transformer submodule. Figure 1 In the embodiment shown, there are two first transformer sub-modules S1 to S2 , and seven second transformer sub-modules L1 to L7 .

[0039] It is worth noting that in this embodiment, to improve the power supply stability of the power supply device, the power supply voltage is not directly transformed by each transformer submodule before being output to the camera module's power supply circuit. Instead, for some power supply circuits, the power supply voltage is first transformed by a first transformer submodule to obtain a first output voltage, which is then output to a second transformer submodule for further transformation. The output voltage of the second transformer submodule is then transmitted to the camera module's power supply circuit.

[0040] Specifically, refer to Figure 1 As shown, the input of the first transformer submodule S1 is the main power supply voltage V1 of the power supply circuit, such as the input of a switching power supply or a linear power supply, and its output is connected to the input terminals of the second transformer submodules L1 to L4. In other words, the first transformer submodule S1 transforms the input power supply voltage to obtain a first output voltage. The second transformer submodules L1 to L4 then transform the first output voltage of the first transformer submodule S1 and output it to the power supply circuit of the camera module.

[0041] By transforming the main power supply voltage V1 through the first transformer submodule S1 , power consumption and heat generation on the power supply can be reduced, providing basic conditions for stable circuit power supply, that is, improving the stability of the power supply device.

[0042] In some embodiments, the first transformer module can be a DC / DC circuit module, and the DC / DC circuit module can be a boost circuit module, a buck circuit module, or a buck-boost circuit module. Those skilled in the art can set it according to needs, and this disclosure does not limit this.

[0043] In one example, the first transformer submodule is specifically a 3-level buck (three-level conversion) circuit, or a charge pump (CP) circuit, or a circuit structure combining the two.

[0044] Figure 2 The structure and principle of the 3-level buck circuit are shown. The 3-level buck circuit is a DC conversion circuit that can reduce the ripple of the power supply voltage and reduce the current path loss.

[0045] Figure 3 The structure and principle of a charge pump circuit (CP circuit) are shown. The CP circuit uses a capacitor as a switch and energy storage element. By switching different MOS transistors in the circuit, the capacitor is charged and discharged, thereby achieving voltage regulation. Compared to a three-level buck circuit, the CP circuit can further reduce path loss.

[0046] In some embodiments of the present disclosure, the first transformer submodule includes a circuit structure formed by combining a 3-level buck circuit and a CP circuit, so that it can switch between the 3-level buck circuit and the CP circuit according to the heating conditions of the circuit, further improving the conversion efficiency and reducing the impact of heat on efficiency loss and performance.

[0047] Those skilled in the art can understand and fully implement the above circuit structure and setting method based on the above disclosure and related technologies, and the present disclosure will not elaborate on this.

[0048] As can be seen from the above description, the power supply device of this embodiment transforms the power supply voltage through the first transformer sub-module, reducing power consumption and heat generation, providing a foundation for stable circuit power supply, and improving the stability of the power supply device. Furthermore, the first transformer sub-module utilizes a circuit structure combining a three-level buck circuit and a CP circuit to reduce ripple, further improve conversion efficiency, and minimize the impact of heat generation on efficiency and performance.

[0049] Continue to refer to Figure 1 In this embodiment, the second transformer sub-modules L1 to L7 use LDO (Low Dropout regulator, low voltage difference linear) circuit modules. The LDO circuit module is a low voltage drop linear transformer module. Compared with the DC / DC circuit module, the LDO circuit module has smaller voltage fluctuation, thereby ensuring a more stable output voltage and further improving the stability of the power supply device.

[0050] The output end of each second transformer sub-module is connected to the power supply circuit of each camera. That is, after each LDO circuit transforms the input voltage, the output voltage is the required voltage of the corresponding camera power supply circuit, so that each LDO circuit outputs the output voltage to the power supply circuit to meet the power supply requirements of the camera.

[0051] For example Figure 1As shown in the figure, the output of the first transformer submodule S2 is used to power the VCM circuit and OIS anti-shake circuit of the three cameras respectively, the output of the second transformer submodule L2 is used to power the digital signal circuit (dVDD) of camera 10, the output of the second transformer submodule L3 is used to power the digital signal circuit (dVDD) of camera 20, the output of the second transformer submodule L4 is used to power the digital signal circuit (dVDD) of camera 30, the output of the second transformer submodule L5 is used to power the analog signal circuit (aVDD) of camera 20, the output of the second transformer submodule L6 is used to power the analog signal circuit (aVDD) of camera 10, and the output of the second transformer submodule L7 is used to power the I / O interface circuits (I / O) of the three cameras respectively.

[0052] It is worth noting that the voltage supply voltage described in the present disclosure is not limited to the system's main power supply voltage V1, but can also be any other suitable power supply voltage. For example, in this embodiment, the input end of the transformer module includes not only the main power supply circuit voltage V1, but also the regulation circuit voltages V2 and V3. In one example, V2 and V3 can be the output voltages of the main power supply voltage after voltage regulation, so that the three voltages V1, V2, and V3 are collectively used as the power supply voltage input input end of the transformer module.

[0053] Those skilled in the art will understand that the function of the voltage conversion module is to adjust the input voltage to the voltage required by the camera's power supply circuits. During implementation, those skilled in the art may refer to any other suitable voltage in the system as the input to the voltage conversion module, and are not limited to this embodiment. Furthermore, the connection between the camera power supply circuit and the output of the voltage conversion module is not limited to the above example. Those skilled in the art may modify the circuit structure based on specific scenario requirements, and this disclosure will not elaborate further on this aspect.

[0054] In some embodiments, the power supply device of the present disclosure is an integrated power supply chip (power supply IC). Figure 4 Some embodiments of the power supply chip disclosed in the present invention are shown below. Figure 4 Provide explanation.

[0055] like Figure 4 As shown, in some embodiments, the power supply chip of the present disclosure includes a voltage conversion module and a control module. The structure and principle of the voltage conversion module can be referred to the above embodiments and will not be repeated here.

[0056] The control module includes a reference circuit, a storage circuit, and a communication structure circuit. The reference circuit provides a voltage reference for each output of the transformer module and the sensor. The communication interface circuit is used to realize the communication connection between the control module and the transformer module or other modules. For example, in one example, the communication interface circuit can adopt an I2C communication circuit, so that the control module and the transformer module can realize communication connection through the I2C bus. The storage circuit is used to store control instructions, such as the power-on timing of the chip configuration, the voltage range of each transformer sub-module, the ripple suppression ratio, the power supply timing of each camera module, and other instruction information. In this way, the control module can control the transformer module according to the information of the control instruction and the voltage reference.

[0057] Those skilled in the art can undoubtedly understand and fully implement the circuit structures and principles of the reference circuit, storage circuit, communication interface circuit, etc. of the control module by referring to relevant technologies, and the present disclosure does not limit this.

[0058] As can be seen from the foregoing, the power supply device of the disclosed embodiment integrates the power supply circuit into a power supply IC, thereby significantly reducing the difficulty and complexity of wiring the power supply circuit and reducing the wiring area of ​​multiple power supply circuits on the PCB. Furthermore, the power supply IC enables unified control and allocation of each circuit, eliminating the need to provide an enable switch on each power supply circuit, thus simplifying the power supply circuit structure. Furthermore, the integrated power supply IC facilitates the structural arrangement of the electronic device with respect to the camera module, making the device camera module design more flexible.

[0059] In some embodiments, in the power supply device of the present disclosure, a detection circuit is provided at the output end of each transformer submodule, and the detection circuit is used to detect the current and / or temperature of the output end of each transformer submodule.

[0060] By detecting the output current of each circuit, overcurrent or overtemperature protection can be implemented. When the current of a power supply circuit is too high or the temperature is too high, the control module can take corresponding control measures to prevent circuit damage. Moreover, for the camera module, even when the device is not calling the camera, each power supply circuit is still powered on, which cannot avoid power loss. The detection circuit can detect the output current of the transformer submodule to determine the current usage status of the camera module, and then switch the camera module's power supply mode, saving power loss and extending the device's battery life.

[0061] From the above, it can be seen that the power supply device of the embodiment of the present disclosure can improve the safety and reliability of the power supply circuit and at the same time increase the battery life of the equipment.

[0062] In a second aspect, an embodiment of the present disclosure provides an electronic device, which includes the power supply device in any embodiment of the first aspect above.

[0063] It can be understood that the electronic device of the embodiment of the present disclosure can be any type of device with a camera module and suitable for implementation, such as handheld terminals such as smartphones and tablets, wearable devices such as smart watches and bracelets, and desktop terminals such as laptops. The present disclosure does not impose any restrictions on this.

[0064] Figure 5 The electronic device structure in some embodiments of the present disclosure is shown in FIG. Figure 5 Electronic devices according to some embodiments of the present disclosure are described.

[0065] Reference Figure 5 , the electronic device 1800 may include one or more of the following components: a processing component 1802 , a memory 1804 , a power component 1806 , a multimedia component 1808 , an audio component 1810 , an input / output (I / O) interface 1812 , a sensor component 1816 , and a communication component 1818 .

[0066] The processing component 1802 generally controls the overall operation of the electronic device 1800, such as operations associated with the display, phone calls, data communications, camera operation, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions. Furthermore, the processing component 1802 may include one or more modules to facilitate interaction between the processing component 1802 and other components. For example, the processing component 1802 may include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802. For another example, the processing component 1802 may read executable instructions from memory to implement functions associated with the electronic device.

[0067] The memory 1804 is configured to store various types of data to support operations on the electronic device 1800. Examples of such data include instructions for any application or method operating on the electronic device 1800, contact data, phone book data, messages, pictures, videos, etc. The memory 1804 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0068] The power supply component 1806 provides power to the various components of the electronic device 1800. The power supply component 1806 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 1800.

[0069] The multimedia component 1808 includes a display screen that provides an output interface between the electronic device 1800 and the user. In some embodiments, the multimedia component 1808 includes a front-facing camera and / or a rear-facing camera. When the electronic device 1800 is in an operating mode, such as a capture mode or a video mode, the front-facing camera and / or the rear-facing camera can receive external multimedia data. Each front-facing camera and the rear-facing camera can have a fixed optical lens system or have a variable focal length and optical zoom capability.

[0070] The audio component 1810 is configured to output and / or input audio signals. For example, the audio component 1810 includes a microphone (MIC) that is configured to receive external audio signals when the electronic device 1800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 1804 or transmitted via the communication component 1818. In some embodiments, the audio component 1810 also includes a speaker for outputting audio signals.

[0071] I / O interface 1812 provides an interface between processing component 1802 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0072] The sensor assembly 1816 includes one or more sensors for providing various aspects of the status assessment of the electronic device 1800. For example, the sensor assembly 1816 can detect the open / closed state of the electronic device 1800, the relative positioning of components, such as the display and keypad of the electronic device 1800. The sensor assembly 1816 can also detect changes in the position of the electronic device 1800 or a component of the electronic device 1800, the presence or absence of user contact with the electronic device 1800, the orientation or acceleration / deceleration of the electronic device 1800, and changes in the temperature of the electronic device 1800. The sensor assembly 1816 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 1816 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1816 can also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0073] The communication component 1818 is configured to facilitate wired or wireless communication between the electronic device 1800 and other devices. The electronic device 1800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1818 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1818 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0074] In an exemplary embodiment, the electronic device 1800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0075] From the above, it can be seen that the power supply device and electronic device of the embodiment of the present disclosure optimize the power supply for multiple camera modules and integrate the power supply circuit into a power supply IC, thereby greatly reducing the wiring difficulty and complexity of the power supply circuit and reducing the wiring area of ​​the multiple power supply circuits on the PCB board. In addition, the power supply IC can realize the same control and deployment of each circuit, without the need to set an enable switch on each power supply circuit, simplifying the power supply circuit structure. Moreover, the integrated power supply IC is more conducive to the structural arrangement of the electronic device for the camera module, making the design of the device camera module more flexible. The power supply voltage is transformed by the first transformer submodule to reduce the power consumption and heat generation on the power supply, provide the basic conditions for stable circuit power supply, and improve the stability of the power supply device. In addition, the first transformer submodule adopts a circuit structure formed by a combination of a 3-level buck circuit and a CP circuit to reduce ripple, further improve conversion efficiency, and reduce the loss of efficiency and the impact of heat on performance.

[0076] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the embodiments. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present disclosure.

Claims

1. A power supply device, characterized in that: Applied to electronic equipment, the power supply device includes: a voltage transformation module, comprising a plurality of voltage transformation sub-modules, wherein input ends of the plurality of voltage transformation sub-modules are connected to the power supply circuit of the electronic device, the voltage transformation sub-modules are used to transform the supply voltage of the power supply circuit, and output ends of the plurality of voltage transformation sub-modules are correspondingly connected to the power supply circuits of the camera module of the electronic device; The plurality of transformer submodules include at least one first transformer submodule and at least one second transformer submodule; The input end of the first transformer submodule is connected to the power supply circuit, and is used to transform the supply voltage to obtain a first output voltage; The input end of the second transformer submodule is connected to the output end of the first transformer submodule, and is used to transform the first output voltage. The output end of the second transformer submodule is connected to the power supply circuit of the camera module. The first transformer submodule includes a three-level transformer circuit and a charge pump transformer circuit, and the second transformer submodule includes a low-voltage difference linear transformer circuit, wherein the first transformer submodule is configured to control the switching operation of the three-level transformer circuit and the charge pump transformer circuit according to the heat generated by the power supply circuit.

2. The power supply device according to claim 1, wherein: Also includes: A control module is connected to the voltage transformation module, and the control module includes a reference circuit, which is used to control the output voltage of each of the voltage transformation sub-modules according to the voltage reference of the reference circuit.

3. The power supply device according to claim 2, characterized in that: The control module further includes a storage circuit, wherein the storage circuit stores a control instruction. The control module controls the output voltage of each of the transformer sub-modules according to the control instruction and the voltage reference.

4. The power supply device according to claim 1, wherein: The output end of each transformer submodule is provided with a detection circuit, and the detection circuit is used to detect the current and / or temperature of the output end of the transformer submodule.

5. The power supply device according to claim 1, wherein: The electronic device includes a plurality of the camera modules, each of the camera modules includes a plurality of the power supply circuits, and the output ends of the plurality of transformer submodules are connected to at least one power supply circuit of at least one camera module.

6. The power supply device according to claim 1, characterized in that: The power supply circuit of the electronic device includes a main power supply circuit; or, The power supply circuit of the electronic equipment includes a main power supply circuit and a voltage regulating circuit.

7. The power supply device according to claim 1, characterized in that: The power supply device is a power supply chip.

8. An electronic device, characterized in that: The device comprises the power supply device according to any one of claims 1 to 7.

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