Differential amplifier module, dual-cell power supply circuit and electronic device

Abstract

The application discloses a differential amplifier module, a double-battery power supply circuit and electronic equipment, and belongs to the technical field of electronic circuits. The differential amplifier module comprises a first differential amplification component and a second differential amplification component, a first connecting end of the first differential amplification component is connected with a first connecting end of the second differential amplification component, and a second connecting end of the first differential amplification component is connected with a second connecting end of the second differential amplification component. The first differential amplification component comprises a voltage receiving end, the second differential amplification component comprises a power supply connecting end and a voltage output end, the voltage receiving end is connected with the voltage output end, and the voltage output end and the voltage receiving end are grounded. The power supply connecting end is used for receiving a power supply voltage, and the voltage output end is used for outputting the power supply voltage after voltage reduction by the second differential amplification component to the first differential amplification component.

Description

Technical Field

[0001] This application belongs to the field of electronic circuit technology, specifically relating to a differential amplifier module, a dual-cell power supply circuit, and electronic equipment. Background Technology

[0002] With the development of fast charging technology for smart terminals, the charging time for smart terminals has been significantly shortened. Under the premise of maintaining a certain charging power, there are two main technical paths to achieve fast charging: one is low voltage and high current, and the other is high voltage and low current. Correspondingly, there are two cell solutions for smart terminal batteries: one is a single cell, and the other is a series dual cell. The output voltage of a single cell is generally 4V, and the output voltage of a series dual cell is generally 8V.

[0003] A 4V single-cell battery can directly power a smart terminal. However, when using an 8V series dual-cell battery solution, an additional buck circuit is needed to reduce the 8V cell voltage by half before powering the smart terminal. Since the amplifier module of the smart terminal consumes a significant amount of power and incurs considerable losses, reducing the 8V cell voltage by half lowers the system's energy conversion efficiency, resulting in a shorter usage time for the smart terminal after a full charge. Summary of the Invention

[0004] The purpose of this application is to provide a differential amplifier module, a dual-cell power supply circuit, and an electronic device that can solve the problem of low power conversion efficiency during the charging process of existing amplifier architectures.

[0005] In a first aspect, this application provides a differential amplifier module, the differential amplifier module including a first differential amplifier component and a second differential amplifier component, a first connection terminal of the first differential amplifier component being connected to a first connection terminal of the second differential amplifier component, and a second connection terminal of the first differential amplifier component being connected to a second connection terminal of the second differential amplifier component; the first differential amplifier component includes a voltage receiving terminal, the second differential amplifier component includes a power supply connection terminal and a voltage output terminal, the voltage receiving terminal being connected to the voltage output terminal, and the voltage output terminal and the voltage receiving terminal being grounded; the power supply connection terminal is used to receive a power supply voltage, and the voltage output terminal is used to output a power supply voltage stepped down by the second differential amplifier component to the first differential amplifier component.

[0006] Secondly, this application provides a dual-cell power supply circuit, the circuit including a dual-cell power supply and a differential amplifier module, the differential amplifier module being the differential amplifier module described in any one of the first aspects; the dual-cell power supply includes a positive power supply terminal and a negative power supply terminal, the positive power supply terminal being connected to the power supply connection terminal of the differential amplifier module, and the negative power supply terminal being grounded together with the ground terminal of the differential amplifier module.

[0007] Thirdly, this application provides an electronic device that includes a dual-cell power supply circuit provided in the second aspect.

[0008] In this application, by modifying the structure of the amplifier itself, the first differential amplifier component and the second differential amplifier component are connected in series. The first differential amplifier component and the second differential amplifier component are powered through the power supply terminal. Through the self-dissipation of the second differential amplifier component and the series voltage division principle, each differential amplifier component can operate within its corresponding operating voltage range, and the power supply voltage can be reduced without the need for an additional step-down module, thereby improving the power efficiency of the terminal equipment. Attached Figure Description

[0009] Figure 1 This embodiment provides a differential amplifier module;

[0010] Figure 2 This is a schematic diagram of the current loop of the differential amplifier module provided in this embodiment under DC conditions;

[0011] Figure 3 This is a schematic diagram of the current loop of the differential amplifier module provided in this embodiment under AC environment;

[0012] Figure 4 This embodiment provides a dual-cell power supply circuit;

[0013] Figure 5 This embodiment provides a schematic diagram of the structure of an electronic device;

[0014] Figure 6 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of this application. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0017] The differential amplifier module provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0018] Figure 1 This embodiment provides a differential amplifier module, with reference to... Figure 1 The differential amplifier module includes a first differential amplifier component 101 and a second differential amplifier component 102.

[0019] The first connection terminal of the first differential amplifier component 101 is connected to the first connection terminal of the second differential amplifier component 102, and the second connection terminal of the first differential amplifier component 101 is connected to the second connection terminal of the second differential amplifier component 102, so that the first differential amplifier component 101 and the second differential amplifier component 102 form two differential amplifier circuits connected in series.

[0020] In this embodiment, the first differential amplifier component 101 includes a voltage receiving terminal B, and the second differential amplifier component 102 includes a power connection terminal A and a voltage output terminal P. The voltage receiving terminal B is connected to the voltage output terminal P, and both the voltage output terminal P and the voltage receiving terminal B are grounded. The power connection terminal A is used to receive the power supply voltage, and the voltage output terminal P is used to output the power supply voltage, after being stepped down by the second differential amplifier component 102, to the first differential amplifier component 101.

[0021] refer to Figure 1 It can be seen that the first differential amplifier component 101 and the second differential amplifier component 102 are connected in series. In one example, the power supply voltage can be the 8V voltage output by the dual-cell power supply. Since the first differential amplifier component 101 and the second differential amplifier component 102 are connected in series, according to the principle of series voltage division, the first differential amplifier component 101 and the second differential amplifier component 102 can share the voltage at the power supply connection terminal equally. That is, the voltage division of the first differential amplifier component 101 and the second differential amplifier component 102 is the same, and both can be 4V.

[0022] In this embodiment, the first differential amplifier component 101 and the second differential amplifier component 102 have the same operating voltage range, thereby enabling the first differential amplifier component 101 and the second differential amplifier component 102 to divide the voltage evenly.

[0023] The operating voltage range of the first differential amplifier component 101 and the second differential amplifier component 102 can be 1V to 4.8V. The electronic components in the first differential amplifier component 101 and the second differential amplifier component 102 have the same specifications. For example, the first differential amplifier component 101 and the second differential amplifier component 102 have the same withstand voltage and the same amplification factor.

[0024] For example, if the power supply connection terminal has an input voltage of 8V, and since the first differential amplifier component 101 and the second differential amplifier component 102 are connected in series, after the voltage is divided by the second differential amplifier, the voltage flowing into the voltage receiving terminal of the first differential amplifier component 101 is 4V. Therefore, the voltage change of the second differential amplifier component 102 is 8V to 4V, and the voltage change of the first differential amplifier component 101 is 4V to 0V. Thus, the voltage changes that the first differential amplifier component 101 and the second differential amplifier component 102 can withstand are the same.

[0025] This embodiment modifies the amplifier's structure by connecting the first differential amplifier component 101 and the second differential amplifier component 102 in series. Power is supplied to the first differential amplifier component 101 and the second differential amplifier component 102 through a power connection terminal. Through the self-consumption of the second differential amplifier component 102 and the series voltage division principle, each differential amplifier component can operate within its corresponding operating voltage range, and the power supply voltage can be reduced without the need for an additional voltage reduction module, thereby improving the power efficiency of the terminal device.

[0026] In this embodiment, both the first differential amplifier component 101 and the second differential amplifier component 102 are dual-ended differential amplifiers, which have better output power and anti-interference performance.

[0027] In this embodiment, the first differential amplifier component 101 includes a first signal input terminal INN and a first signal output terminal OUTP, and the second differential amplifier component 102 includes a second signal input terminal INP and a second signal output terminal OUTN. The first signal input terminal INN is connected to the second signal input terminal INP and is used to input a differential signal, which can be an AC signal or a radio frequency signal. The first signal output terminal OUTP is connected to the second signal output terminal OUTN and is used to output the differential signal processed by the differential amplifier module. For example, the first signal output terminal OUTP is connected to the second signal output terminal OUTN, which is then connected to the antenna of the terminal, thereby outputting the processed differential signal.

[0028] For example, a first signal is input through the first signal input terminal, and a second signal is input through the second signal input terminal. The differential amplifier module amplifies the difference between the first signal and the second signal and outputs it.

[0029] In this embodiment, the first differential amplifier component 101 further includes a first transformer T1, a first amplifier U1, a second amplifier U2, and a second transformer T2; the first input terminal of the first transformer T1 is the first signal input terminal INN of the first differential amplifier component 101, and the second input terminal of the first transformer T1 is the first connection terminal of the first differential amplifier component; the first output terminal of the first transformer T1 is connected to the input terminal of the first amplifier U1, and the second output terminal of the first transformer T1 is connected to the input terminal of the second amplifier; the first output terminal of the first amplifier U1 is connected to the first input terminal of the second transformer T2, and the second output terminal of the second amplifier U2 is connected to the second input terminal of the second transformer T2; the first output terminal of the second transformer is the first signal output terminal OUTP of the first differential amplifier component 101, and the second output terminal of the second transformer T2 is the second connection terminal of the first differential amplifier component 101; the ground terminals of the first amplifier and the second amplifier are grounded together.

[0030] In this embodiment, the second differential amplifier component 102 further includes a third transformer T3, a third amplifier U3, a fourth amplifier U4, and a fourth transformer T4; the first input terminal of the third transformer T3 is the first connection terminal of the second differential amplifier component; the second input terminal of the third transformer T3 is the second signal input terminal INP of the second differential amplifier component 102; the first output terminal of the third transformer T3 is connected to the input terminal of the third amplifier U3, and the second output terminal of the third transformer T3 is connected to the input terminal of the fourth amplifier U4; the first output terminal of the third amplifier U3 is connected to the first input terminal of the fourth transformer T4, and the second output terminal of the third amplifier U3 is connected to the second input terminal of the fourth transformer T4; the first output terminal of the fourth transformer T4 is the second connection terminal of the second differential amplifier component 102; the second output terminal of the fourth transformer (T4) is the second signal output terminal OUTN of the second differential amplifier component 102; the ground terminals of the third amplifier U3 and the fourth amplifier U4 are connected to the voltage output terminal P.

[0031] In this embodiment, the first transformer T1, the second transformer T2, the third transformer T3, and the fourth transformer T4 can be 1:1 transformers, i.e., isolation transformers, serving to protect the circuit. The first transformer T1, the second transformer T2, the third transformer T3, and the fourth transformer T4 can also be configured with different transformer ratios according to the circuit's needs to output preset voltage or power signal values.

[0032] In this embodiment, each transformer in the first differential amplifier assembly 101 and the second differential amplifier assembly 102 includes a first transformer component and a second transformer component. Both the first and second transformer components include a first inductor and a second inductor connected in series. That is, the first transformer T1, the second transformer T2, the third transformer T3, and the fourth transformer T4 all include a first transformer component and a second transformer component, and both the first and second transformer components include a first inductor and a second inductor connected in series. The first and second inductors of the first transformer component can be considered as the primary side of the transformer, and the first and second inductors of the second transformer component can be considered as the secondary side of the transformer.

[0033] In this embodiment, the power supply connection terminal A is the connection point of the first inductor and the second inductor of the first transformer component of the fourth transformer T4, and the voltage receiving terminal B is the connection point of the first inductor and the second inductor of the first transformer component of the second transformer T2.

[0034] It should be noted that since the voltage receiving terminal B is connected to the voltage output terminal P, and both the voltage output terminal P and the voltage receiving terminal B are grounded, when AC power is supplied, both point P and point B are virtual ground points. A virtual ground point is a point that has a grounding effect when the input is AC power.

[0035] In this embodiment, the first differential amplifier component 101 further includes a first decoupling capacitor C1, the first end of the first decoupling capacitor C1 is grounded, and the second end of the first decoupling capacitor C1 is connected to the voltage receiving terminal B.

[0036] The second differential amplifier component 102 also includes a second decoupling capacitor C2, with the first end of the second decoupling capacitor C2 grounded and the second end of the second decoupling capacitor C2 connected to the voltage output terminal P.

[0037] Among them, the first decoupling capacitor C1 and the second decoupling capacitor C2 have the function of "blocking DC and passing AC". When the power supply voltage is DC, they can form a... Figure 2 The current loop shown can form the following when the power supply voltage is alternating current: Figure 3 The current loop is shown. The first decoupling capacitor C1 and the second decoupling capacitor C2 can also resist signal transmission interference.

[0038] Figure 2 This is a schematic diagram of the current loop of the differential amplifier module provided in this embodiment under DC conditions. Figure 2As shown by the arrow, when the power supply voltage is 8V DC, the 8V power supply is fed from the power connection terminal A of the fourth transformer T4. Since DC power flows from high potential to low potential, the current flows from the 8V power connection terminal with the highest potential to ground. After passing through the third amplifier U3 of the second differential amplifier component 102, it flows to the voltage output terminal P between the third amplifier U3 and the fourth amplifier U4. The voltage output terminal P is connected to the voltage receiving terminal B. Due to the voltage division effect of the first differential amplifier component 101 and the second differential amplifier component 102, and the voltage division of the first differential amplifier component 101 and the second differential amplifier component 102 is the same, the second differential amplifier component 102 shares half of the voltage. The voltage received by the voltage receiving terminal of the first differential amplifier component 101 is 4V, and the current is grounded through the first differential amplifier component 101. Therefore, the voltage drop experienced by the second differential amplifier component 102 is from 8V to 4V, and the voltage drop experienced by the first differential amplifier component 101 is from 4V to 0V. Each amplifier component operates within a 4V voltage range, which achieves the step-down function and also meets the basic functions of the amplifier.

[0039] Figure 3 This is a schematic diagram of the current loop of the differential amplifier module provided in this embodiment under AC conditions. Figure 3 As shown by the arrow, when the power supply voltage is 8V AC, since both the voltage output terminal P and the voltage receiving terminal B are grounded, and both are virtual grounds with a potential of 0, the current in the first differential amplifier component 101 and the second differential amplifier component 102 is in an internal circulation state. The current in the second differential amplifier component 102 does not flow into the first differential amplifier component 101. Furthermore, due to the decoupling capacitors C1 and C2, the AC current in the first differential amplifier component 101 and the second differential amplifier component 102 can flow to their respective ground terminals. Also, due to the voltage divider effect of the series connection between the first differential amplifier component 101 and the second differential amplifier component 102, each operates at a 4V voltage level, and their series stacking achieves operation in an 8V dual-cell environment. This achieves both voltage reduction and fulfills the basic functions of an amplifier.

[0040] It should be noted that, in this embodiment, when the current of the first differential amplifier component 101 and the second differential amplifier component 102 is in an internal circulation state, the self-circulation direction of the internal current is determined according to the positive and negative cycles of the alternating current.

[0041] This embodiment provides a dual-cell power supply circuit, see reference. Figure 4 The circuit includes a dual-cell power supply 201 and a differential amplifier module 202, wherein the differential amplifier module 202 is... Figures 1 to 3 The differential amplifier module shown is shown.

[0042] In this embodiment, the dual-cell power supply 201 includes a positive terminal and a negative terminal. The positive terminal is connected to the power connection terminal of the differential amplifier module, and the negative terminal is grounded together with the ground terminal of the differential amplifier module. The voltage of the dual-cell power supply can be 8V. The dual-cell power supply can realize fast charging of smart terminals and can directly power the differential amplifier module without the need for a step-down module to reduce the voltage of the dual-cell power supply before powering the differential amplifier module, thus improving power supply efficiency.

[0043] The dual-cell power supply circuit also includes a buck chopper 203, a processor 204, and a power management unit 205. The first terminal of the buck chopper 203 is connected to the positive terminal of the power supply, and the second terminal of the buck chopper 203 is connected to the first terminal of the processor 204 and the first terminal of the power management unit. The buck chopper 203 is used to step down the output voltage of the dual-cell power supply and output it to the processor and the power management unit. In this embodiment, the second terminal of the processor and the second terminal of the power management unit are connected to the negative terminal of the power supply so that the dual-cell power supply can supply power to the processor and the power management unit and maintain normal operation.

[0044] In this embodiment, the dual-cell power supply circuit can be set in the smart terminal, the processor is used to control the operation of the smart terminal, and the power management unit is used to manage the power of the dual-cell power supply.

[0045] The dual-cell power supply circuit in this embodiment directly supplies power to the differential amplifier module through the dual-cell power supply, without needing to step down the voltage of the dual-cell power supply before supplying power to the differential amplifier module through a step-down module, thus improving power supply efficiency.

[0046] refer to Figure 5 This embodiment provides an electronic device, which includes a dual-cell power supply circuit 501. The dual-cell power supply circuit 501 is... Figure 4 The dual-cell power supply circuit shown.

[0047] The electronic device can be a component in a smart terminal, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application does not specifically limit the scope of the embodiments.

[0048] The electronic device provided in this application embodiment can enable each differential amplifier component to operate within its corresponding operating voltage range and can reduce the power supply voltage without the need for an additional step-down module, thereby improving the power efficiency of the terminal device. To avoid repetition, this will not be elaborated further here.

[0049] Figure 6 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of this application.

[0050] The electronic device 1000 includes, but is not limited to, components such as: a dual-cell power supply circuit 501, a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010.

[0051] Those skilled in the art will understand that the electronic device 1000 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1010 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 6 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0052] Among them, the dual-cell power supply circuit 501 is Figure 4The dual-cell power supply circuit shown includes a dual-cell power supply and a differential amplifier module. The differential amplifier module is... Figures 1 to 3 The differential amplifier module shown is used to power the electronic device in this embodiment. A dual-cell power supply is used to power the device.

[0053] The electronic device in this embodiment can enable each differential amplifier component to operate within its corresponding operating voltage range and can reduce the power supply voltage without the need for an additional step-down module, thereby improving the power efficiency of the terminal device. To avoid repetition, this will not be elaborated further here.

[0054] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042. The GPU 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0055] The memory 1009 can be used to store software programs and various data. The memory 1009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1009 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0056] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into the processor 1010.

[0057] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0058] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0059] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A differential amplifier module, characterized in that, The differential amplifier module includes a first differential amplifier component and a second differential amplifier component; The first connection terminal of the first differential amplifier component is connected to the first connection terminal of the second differential amplifier component, and the second connection terminal of the first differential amplifier component is connected to the second connection terminal of the second differential amplifier component. The first differential amplifier component includes a voltage receiving terminal, and the second differential amplifier component includes a power supply connection terminal and a voltage output terminal. The voltage receiving terminal is connected to the voltage output terminal, and the voltage output terminal and the voltage receiving terminal are grounded. The power connection terminal is used to receive the power supply voltage, and the voltage output terminal is used to output the power supply voltage after being stepped down by the second differential amplifier component to the first differential amplifier component; The first differential amplifier component and the second differential amplifier component have the same operating voltage range, and the first differential amplifier component and the second differential amplifier component share the power supply voltage equally.

2. The differential amplifier module according to claim 1, characterized in that, The first differential amplifier component includes a first signal input terminal and a first signal output terminal, and the second differential amplifier component includes a second signal input terminal and a second signal output terminal. The first signal input terminal is connected to the second signal input terminal for inputting a differential signal, and the first signal output terminal is connected to the second signal output terminal for outputting a differential signal processed by the differential amplifier module.

3. The differential amplifier module according to claim 2, characterized in that, The first differential amplifier component further includes a first transformer, a first amplifier, a second amplifier, and a second transformer; The first input terminal of the first transformer is the first signal input terminal of the first differential amplifier component, and the second input terminal of the first transformer is the first connection terminal of the first differential amplifier component. The first output terminal of the first transformer is connected to the input terminal of the first amplifier, and the second output terminal of the first transformer is connected to the input terminal of the second amplifier. The first output terminal of the first amplifier is connected to the first input terminal of the second transformer, and the second output terminal of the second amplifier is connected to the second input terminal of the second transformer. The first output terminal of the second transformer is the first signal output terminal of the first differential amplifier component, and the second output terminal of the second transformer is the second connection terminal of the first differential amplifier component. The grounding terminals of the first amplifier and the second amplifier are grounded together.

4. The differential amplifier module according to claim 2, characterized in that, The second differential amplifier assembly also includes a third transformer, a third amplifier, a fourth amplifier, and a fourth transformer; The first input terminal of the third transformer is the first connection terminal of the second differential amplifier component; The second input terminal of the third transformer is the second signal input terminal of the second differential amplifier component; The first output terminal of the third transformer is connected to the input terminal of the third amplifier, and the second output terminal of the third transformer is connected to the input terminal of the fourth amplifier. The first output terminal of the third amplifier is connected to the first input terminal of the fourth transformer, and the second output terminal of the third amplifier is connected to the second input terminal of the fourth transformer. The first output terminal of the fourth transformer is the second connection terminal of the second differential amplifier component; the second output terminal of the fourth transformer is the second signal output terminal of the second differential amplifier component. The ground terminals of the third and fourth amplifiers are connected to the voltage output terminals.

5. The differential amplifier module according to claim 1, characterized in that, Each transformer in the first differential amplifier assembly and the second differential amplifier assembly includes a first transformer component and a second transformer component, and both the first transformer component and the second transformer component include a first inductor and a second inductor connected in series. The power supply connection terminal is the connection point of the first inductor and the second inductor of the first transformer component of the fourth transformer, and the voltage receiving terminal is the connection point of the first inductor and the second inductor of the first transformer component of the second transformer.

6. The differential amplifier module according to claim 1, characterized in that, The first differential amplifier component further includes a first decoupling capacitor, with a first terminal grounded and a second terminal connected to the voltage receiving terminal.

7. The differential amplifier module according to claim 1, characterized in that, The second differential amplifier component further includes a second decoupling capacitor, with a first terminal grounded and a second terminal connected to the voltage output terminal.

8. A dual-cell power supply circuit, characterized in that, The circuit includes a dual-cell power supply and a differential amplifier module, wherein the differential amplifier module is the differential amplifier module according to any one of claims 1-7; The dual-cell power supply includes a positive power terminal and a negative power terminal. The positive power terminal is connected to the power connection terminal of the differential amplifier module, and the negative power terminal is grounded together with the ground terminal of the differential amplifier module.

9. A dual-cell power supply circuit according to claim 8, characterized in that, The circuit also includes a buck chopper, a processor, and a power management unit; The first end of the buck chopper is connected to the positive terminal of the power supply, and the second end of the buck chopper is connected to the first end of the processor and the first end of the power management unit. The buck chopper is used to step down the output voltage of the dual-cell power supply and output it to the processor and the power management unit. The second terminal of the processor and the second terminal of the power management unit are connected to the negative terminal of the power supply.

10. An electronic device, characterized in that, Includes a dual-cell power supply circuit as described in claim 8 or 9.

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