Voice coil motor driving circuit capable of switching working modes and gamepad

Abstract

The utility model provides a voice coil motor driving circuit capable of switching working modes and a gamepad, which comprise an audio power amplification sub-circuit, an H-bridge driving sub-circuit, a change-over switch sub-circuit and an MCU (Microprogrammed Control Unit) control sub-circuit, and is characterized in that the input end of the audio power amplification sub-circuit is electrically connected with the audio signal output end of the MCU control sub-circuit; the output end of the audio power amplification sub-circuit is electrically connected with the first input end of the change-over switch sub-circuit; the input end of the H-bridge driving sub-circuit is electrically connected with the PWM signal output end of the MCU control sub-circuit, and the output end of the H-bridge driving sub-circuit is electrically connected with the second input end of the change-over switch sub-circuit; the control end of the change-over switch sub-circuit is electrically connected with the control signal output end of the MCU control sub-circuit, and the output end of the change-over switch sub-circuit is electrically connected with the voice coil motor. According to the utility model, an audio driving mode and a PWM driving mode can be adopted, and the driving modes can be switched, so that different vibration sense experiences can be realized in different scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of motor driving, and more specifically, to a voice coil motor driving circuit and a game controller capable of switching working modes. Background Art

[0002] As a common gaming peripheral, game controllers can be used to control game characters. As people's consumption level increases, they pay more and more attention to gaming experience. The tactile actuators based on voice coil motors can be directly driven by audio signals to allow users to experience a more delicate vibration experience.

[0003] The prior art provides a method for directly driving a motor using audio. However, this driving method is relatively simple and can only be driven by audio, and the driving method cannot be adjusted according to the game scene. For example, in some game scenes, users want to experience a more delicate vibration, and it is more appropriate to use audio drive at this time. In some game scenes, users want to experience a strong vibration similar to a rotor motor. At this time, it is not appropriate to use audio to drive the voice coil motor. The reason is that the voice coil motor is only sensitive to a very narrow frequency range (tens of Hz to hundreds of Hz), but the audio data contains complex frequency components. For the high-frequency part of the audio data, the voice coil motor does not even have any response (vibration). At this time, it would be more appropriate to use the PWM mode for driving. The frequency of the PWM signal can be adjusted according to the sensitive frequency of the voice coil motor so that the frequency of the PWM signal is within the sensitive frequency range of the voice coil motor. This can bring a very strong vibration experience to the user. Utility Model Content

[0004] One of the purposes of the present invention is to provide a voice coil motor driving circuit with switchable working modes, so as to solve the technical problem that the driving mode of the voice coil motor is relatively single in the prior art and cannot be switched according to actual needs; the second purpose of the present invention is to provide a game controller.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] The first aspect of the utility model provides a voice coil motor driving circuit with switchable working modes, which is used to drive a voice coil motor, and includes an audio power amplifier subcircuit, an H-bridge driving subcircuit, a switching switch subcircuit and an MCU control subcircuit, wherein:

[0007] The input end of the audio power amplification subcircuit is electrically connected to the audio signal output end of the MCU control subcircuit, and the output end of the audio power amplification subcircuit is electrically connected to the first input end of the switching subcircuit;

[0008] The input end of the H-bridge driving subcircuit is electrically connected to the PWM signal output end of the MCU control subcircuit, and the output end of the H-bridge driving subcircuit is electrically connected to the second input end of the switching subcircuit;

[0009] The control end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit, and the output end of the switching subcircuit is electrically connected to the voice coil motor.

[0010] In the above technical means, the audio power amplifier subcircuit is used to receive the audio signal of the MCU control subcircuit and amplify the signal, and the H-bridge and driving circuit output the PWM driving waveform according to the PWM signal of the MCU control subcircuit. The switching switch circuit is controlled by the MCU control subcircuit, and can select the audio signal for output or the PWM driving waveform for output to drive the voice coil motor, and the switching switch must also ensure that the audio power amplifier circuit and the H-bridge driving circuit do not affect each other, which solves the technical problem that the driving mode in the prior art is relatively single and the driving mode of the voice coil motor cannot be switched according to actual needs.

[0011] Furthermore, the audio power amplifier sub-circuit is a class A, class B, class AB or class D audio power amplifier sub-circuit.

[0012] Further, the audio power amplifier sub-circuit is a Class D audio power amplifier sub-circuit, including an audio power amplifier chip EG8305, a resistor R1, a resistor R2, a resistor group R3, a capacitor C1, a capacitor C2, a capacitor C3 and a capacitor C4, wherein:

[0013] The CTRL terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the power supply VDD;

[0014] The BYPASS terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the capacitor C2, and the other end of the capacitor C2 is grounded;

[0015] The INP terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to one end of the capacitor C3, and the other end of the capacitor C3 is electrically connected to the audio signal output end of the MCU control subcircuit;

[0016] The INN terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to one end of the capacitor C4, and the other end of the capacitor C4 is grounded;

[0017] The GND terminal of the audio power amplifier chip EG8305 is grounded;

[0018] The VDD terminal of the audio power amplifier chip EG8305 is connected to the power supply VDD and one end of the capacitor C1 respectively, and the other end of the capacitor C1 is grounded;

[0019] The VOP terminal and the VON terminal of the audio power amplifier chip EG8305 are electrically connected to the first input terminal of the switching switch subcircuit as output terminals of the audio power amplifier subcircuit.

[0020] Furthermore, the H-bridge driving sub-circuit includes a driving chip DRV8837DSGR, a capacitor C5, a capacitor C6 and a capacitor C7, wherein:

[0021] The VCC terminal of the driver chip DRV8837DSGR is connected to the power supply VDD and one end of the capacitor C6 respectively, and the other end of the capacitor C6 is grounded;

[0022] The driver chip DRV8837DSGR Termination power supply VDD;

[0023] The IN1 terminal and the IN2 terminal of the driving chip DRV8837DSGR are electrically connected to the PWM signal output terminal of the MCU control subcircuit respectively;

[0024] The VM end of the driver chip DRV8837DSGR is respectively connected to the power supply VDD, one end of the capacitor C5 and one end of the capacitor C7, and the other ends of the capacitor C5 and the capacitor C7 are both grounded;

[0025] The OUT1 and OUT2 terminals of the driver chip DRV8837DSGR are electrically connected to the second input terminal of the switch subcircuit as output terminals of the H-bridge driver subcircuit;

[0026] The GND terminal of the driving chip DRV8837DSGR is grounded.

[0027] Further, the switching subcircuit includes a double-pole double-throw relay K1, a diode D1 and a switching subcircuit, wherein:

[0028] The two common ends of the double-pole double-throw relay K1 are connected to the voice coil motor;

[0029] The two normally closed ends of the double-pole double-throw relay K1 are electrically connected to the output end of the audio power amplifier subcircuit as the first input end of the switching subcircuit;

[0030] The two normally open ends of the double-pole double-throw relay K1 are electrically connected to the output end of the H-bridge drive subcircuit as the second input ends of the switching subcircuit;

[0031] One end of the coil of the double-pole double-throw relay K1 is electrically connected to the power supply VDD and the negative electrode of the diode D1 respectively, and the other end of the coil of the double-pole double-throw relay K1 is electrically connected to the output end of the switching subcircuit respectively, and the input end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit as the control end of the switching switch subcircuit.

[0032] Further, the switching subcircuit includes a double-pole double-throw relay K1, a diode D1 and a switching subcircuit, wherein:

[0033] The two common ends of the double-pole double-throw relay K1 are connected to the voice coil motor;

[0034] The two normally closed ends of the double-pole double-throw relay K1 are electrically connected to the output end of the H-bridge drive subcircuit as the second input ends of the switching subcircuit;

[0035] The two normally open ends of the double-pole double-throw relay K1 are electrically connected to the output end of the audio power amplifier subcircuit as the first input end of the switching subcircuit;

[0036] One end of the coil of the double-pole double-throw relay K1 is electrically connected to the power supply VDD and the negative electrode of the diode D1 respectively, and the other end of the coil of the double-pole double-throw relay K1 is electrically connected to the output end of the switching subcircuit respectively, and the input end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit as the control end of the switching switch subcircuit.

[0037] Furthermore, the switching subcircuit includes a MOS tube Q1, a resistor R4 and a resistor R5, wherein:

[0038] The drain of the MOS tube Q1 is connected to the output end of the switching sub-circuit and the other end of the coil of the double-pole double-throw relay K1;

[0039] The source of MOS tube Q1 is grounded;

[0040] The gate of the MOS tube Q1 is electrically connected to one end of the resistor R4 and one end of the resistor R5 respectively, the other end of the resistor R4 is grounded, and the other end of the resistor R5 is electrically connected to the control signal output end of the MCU control sub-circuit.

[0041] Furthermore, the MCU control subcircuit includes an MCU chip, and the MCU chip includes an audio decoding module.

[0042] Furthermore, the MCU control subcircuit also includes a capacitor C8 and a capacitor C9, wherein:

[0043] The IO1 and IO2 terminals of the MCU chip are electrically connected to the input terminal of the H-bridge driving subcircuit as the PWM signal output terminals of the MCU control subcircuit;

[0044] The IO3 terminal of the MCU chip is electrically connected to the control terminal of the switching subcircuit as the control signal output terminal of the MCU control subcircuit;

[0045] The AUDIO terminal of the MCU chip is electrically connected to the input terminal of the audio power amplification subcircuit as the audio signal output terminal of the MCU control subcircuit;

[0046] The VCC end of the MCU chip is electrically connected to the power supply VDD, one end of the capacitor C8 and one end of the capacitor C9 respectively, and the other end of the capacitor C8 and the other end of the capacitor C9 are grounded;

[0047] The GND terminal of the MCU chip is grounded.

[0048] A second aspect of the utility model provides a game controller, comprising the voice coil motor driving circuit with switchable working modes.

[0049] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0050] The utility model controls the switching switch sub-circuit through the MCU control sub-circuit to select whether to use an audio signal to drive the voice coil motor or to use a PWM signal to drive the voice coil motor. The driving mode of the voice coil motor can be switched according to actual needs, which can bring a better vibration experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A connection diagram of a voice coil motor driving circuit with switchable working modes provided by an embodiment of the utility model;

[0052] Figure 2 A schematic diagram of the structure of an audio power amplifier sub-circuit provided in an embodiment of the utility model;

[0053] Figure 3 A schematic diagram of the structure of an H-bridge drive subcircuit provided in an embodiment of the utility model;

[0054] Figure 4 A schematic diagram of the structure of a switching subcircuit provided in an embodiment of the utility model;

[0055] Figure 5 A schematic diagram of the structure of the MCU control sub-circuit provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0056] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0057] In order to better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0058] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0059] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0060] Example 1

[0061] like Figure 1 As shown, Figure 1 The figure is a connection diagram of a voice coil motor driving circuit with switchable working modes, wherein the voice coil motor driving circuit with switchable working modes is used to drive a voice coil motor, and includes an audio power amplifier subcircuit, an H-bridge driving subcircuit, a switching switch subcircuit and an MCU control subcircuit, wherein:

[0062] The input end of the audio power amplification subcircuit is electrically connected to the audio signal output end of the MCU control subcircuit, and the output end of the audio power amplification subcircuit is electrically connected to the first input end of the switching subcircuit;

[0063] The input end of the H-bridge driving subcircuit is electrically connected to the PWM signal output end of the MCU control subcircuit, and the output end of the H-bridge driving subcircuit is electrically connected to the second input end of the switching subcircuit;

[0064] The control end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit, and the output end of the switching subcircuit is electrically connected to the voice coil motor.

[0065] The working principle of the above circuit is as follows:

[0066] The audio power amplifier subcircuit is used to receive the audio signal from the MCU control subcircuit to amplify the signal, and the H-bridge driver subcircuit outputs the PWM drive waveform according to the PWM signal of the MCU control subcircuit. The switching subcircuit is controlled by the MCU control subcircuit. It can select the audio signal for output according to the game scene, or select the PWM drive waveform output to drive the voice coil motor. The switching subcircuit must also ensure that the audio power amplifier subcircuit and the H-bridge driver subcircuit do not affect each other. The MCU control subcircuit is responsible for the control part of the entire circuit.

[0067] Example 2

[0068] This embodiment further discloses the following contents based on the embodiment 1:

[0069] The audio power amplifier sub-circuit is a class A, class B, class AB or class D audio power amplifier sub-circuit.

[0070] In a further embodiment, the audio power amplifier sub-circuit is a class D audio power amplifier sub-circuit, such as Figure 2 As shown, it includes an audio power amplifier chip EG8305, a resistor R1, a resistor R2, a resistor group R3, a capacitor C1, a capacitor C2, a capacitor C3 and a capacitor C4, wherein:

[0071] The CTRL terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the power supply VDD;

[0072] The BYPASS terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the capacitor C2, and the other end of the capacitor C2 is grounded;

[0073] The INP terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to one end of the capacitor C3, and the other end of the capacitor C3 is electrically connected to the audio signal output end of the MCU control subcircuit;

[0074] The INN terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to one end of the capacitor C4, and the other end of the capacitor C4 is grounded;

[0075] The GND terminal of the audio power amplifier chip EG8305 is grounded;

[0076] The VDD terminal of the audio power amplifier chip EG8305 is connected to the power supply VDD and one end of the capacitor C1 respectively, and the other end of the capacitor C1 is grounded;

[0077] The VOP terminal and the VON terminal of the audio power amplifier chip EG8305 are electrically connected to the first input terminal of the switching switch subcircuit as output terminals of the audio power amplifier subcircuit.

[0078] In the above embodiment, a Class D audio power amplifier circuit is used to receive audio data from the MCU and then perform power amplification. The amplified audio interfaces AUDIO_P and AUDIO_N are connected to the switching subcircuit and can be directly used to drive the voice coil motor.

[0079] In a further embodiment, Figure 3 As shown, the H-bridge driving sub-circuit includes a driving chip DRV8837DSGR, a capacitor C5, a capacitor C6 and a capacitor C7, wherein:

[0080] The VCC terminal of the driver chip DRV8837DSGR is connected to the power supply VDD and one end of the capacitor C6 respectively, and the other end of the capacitor C6 is grounded;

[0081] The driver chip DRV8837DSGR Termination power supply VDD;

[0082] The IN1 terminal and the IN2 terminal of the driving chip DRV8837DSGR are electrically connected to the PWM signal output terminal of the MCU control subcircuit respectively;

[0083] The VM end of the driver chip DRV8837DSGR is respectively connected to the power supply VDD, one end of the capacitor C5 and one end of the capacitor C7, and the other ends of the capacitor C5 and the capacitor C7 are both grounded;

[0084] The OUT1 and OUT2 terminals of the driver chip DRV8837DSGR are electrically connected to the second input terminal of the switch subcircuit as output terminals of the H-bridge driver subcircuit;

[0085] The GND terminal of the driving chip DRV8837DSGR is grounded.

[0086] In the above embodiment, the control terminals IN1 and IN2 of the driving chip DRV8837DSGR are connected to the MCU. Through the control of the MCU, the output terminals OU1 and OUT2 can output PWM waveforms. The output terminals OU1 and OUT2 are connected to the switching switch 3 and can be directly used to drive the voice coil motor.

[0087] In an optional embodiment, if Figure 4 As shown, the switching subcircuit includes a double-pole double-throw relay K1, a diode D1 and a switching subcircuit, wherein:

[0088] The two common ends of the double-pole double-throw relay K1 are connected to the voice coil motor;

[0089] The two normally closed ends of the double-pole double-throw relay K1 are electrically connected to the output end of the audio power amplifier subcircuit as the first input end of the switching subcircuit;

[0090] The two normally open ends of the double-pole double-throw relay K1 are electrically connected to the output end of the H-bridge drive subcircuit as the second input ends of the switching subcircuit;

[0091] One end of the coil of the double-pole double-throw relay K1 is electrically connected to the power supply VDD and the negative electrode of the diode D1 respectively, and the other end of the coil of the double-pole double-throw relay K1 is electrically connected to the output end of the switching subcircuit respectively, and the input end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit as the control end of the switching switch subcircuit.

[0092] In another optional embodiment, the switching subcircuit includes a double-pole double-throw relay K1, a diode D1 and a switching subcircuit, wherein:

[0093] The two common ends of the double-pole double-throw relay K1 are connected to the voice coil motor;

[0094] The two normally closed ends of the double-pole double-throw relay K1 are electrically connected to the output end of the H-bridge drive subcircuit as the second input ends of the switching subcircuit;

[0095] The two normally open ends of the double-pole double-throw relay K1 are electrically connected to the output end of the audio power amplifier subcircuit as the first input end of the switching subcircuit;

[0096] One end of the coil of the double-pole double-throw relay K1 is electrically connected to the power supply VDD and the negative electrode of the diode D1 respectively, and the other end of the coil of the double-pole double-throw relay K1 is electrically connected to the output end of the switching subcircuit respectively, and the input end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit as the control end of the switching switch subcircuit.

[0097] In the above embodiment, K1 is a double-pole double-throw relay, the two common terminals 3 and 6 of K1 are connected to the voice coil motor, the 2 and 7 pins are connected to the output of the audio amplifier circuit, the 4 and 5 pins are connected to the output of the H-bridge circuit, the coil 1 pin of the relay is connected to the power supply VDD, the 8 pin is connected to the MOS tube Q1, and the gate connection of Q1 is connected to the control terminal MODE_CTR of the MCU through the resistor R5. When MODE_CTR is equal to a low level, the switch selects audio to drive the voice coil motor; when MODE_CTR is equal to a high level, the switch selects PWM mode for driving.

[0098] In a further embodiment, the switching subcircuit includes a MOS transistor Q1, a resistor R4 and a resistor R5, wherein:

[0099] The drain of the MOS tube Q1 is connected to the output end of the switching sub-circuit and the other end of the coil of the double-pole double-throw relay K1;

[0100] The source of MOS tube Q1 is grounded;

[0101] The gate of the MOS tube Q1 is electrically connected to one end of the resistor R4 and one end of the resistor R5 respectively, the other end of the resistor R4 is grounded, and the other end of the resistor R5 is electrically connected to the control signal output end of the MCU control sub-circuit.

[0102] In a further embodiment, the MCU control subcircuit includes an MCU chip, and the MCU chip includes an audio decoding module.

[0103] In a further embodiment, Figure 5 As shown, the MCU control subcircuit also includes capacitor C8 and capacitor C9, wherein:

[0104] The IO1 and IO2 terminals of the MCU chip are electrically connected to the input terminal of the H-bridge driving subcircuit as the PWM signal output terminals of the MCU control subcircuit;

[0105] The IO3 terminal of the MCU chip is electrically connected to the control terminal of the switching subcircuit as the control signal output terminal of the MCU control subcircuit;

[0106] The AUDIO terminal of the MCU chip is electrically connected to the input terminal of the audio power amplification subcircuit as the audio signal output terminal of the MCU control subcircuit;

[0107] The VCC end of the MCU chip is electrically connected to the power supply VDD, one end of the capacitor C8 and one end of the capacitor C9 respectively, and the other end of the capacitor C8 and the other end of the capacitor C9 are grounded;

[0108] The GND terminal of the MCU chip is grounded.

[0109] In the above embodiment, the MCU chip directly outputs audio data through its IO port, and the audio interface Audio is connected to the audio power amplifier circuit; IO1 and IO2 of the MCU chip are connected to the H-bridge circuit 2, which is used to control the H-bridge circuit to output PWM waves; IO3 of the MCU chip is connected to the switching switch, which is used to control the switching switch to select the driving mode.

[0110] Example 3

[0111] This embodiment provides a game controller, including the voice coil motor driving circuit with switchable working modes described in Embodiment 1 or Embodiment 2.

[0112] The same or similar reference numerals correspond to the same or similar components;

[0113] The terms used in the drawings to describe positional relationships are only used for illustrative purposes and should not be construed as limiting this patent;

[0114] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A voice coil motor driving circuit with switchable working modes, used for driving a voice coil motor, characterized in that: It includes an audio power amplifier subcircuit, an H-bridge driver subcircuit, a switch subcircuit and an MCU control subcircuit, wherein: The input end of the audio power amplification subcircuit is electrically connected to the audio signal output end of the MCU control subcircuit, and the output end of the audio power amplification subcircuit is electrically connected to the first input end of the switching subcircuit; The input end of the H-bridge driving subcircuit is electrically connected to the PWM signal output end of the MCU control subcircuit, and the output end of the H-bridge driving subcircuit is electrically connected to the second input end of the switching subcircuit; The control end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit, and the output end of the switching subcircuit is electrically connected to the voice coil motor.

2. The voice coil motor driving circuit with switchable working modes according to claim 1, characterized in that: The audio power amplifier sub-circuit is a class A, class B, class AB or class D audio power amplifier sub-circuit.

3. The voice coil motor driving circuit with switchable working modes according to claim 2, characterized in that: The audio power amplifier sub-circuit is a Class D audio power amplifier sub-circuit, including an audio power amplifier chip EG8305, a resistor R1, a resistor R2, a resistor group R3, a capacitor C1, a capacitor C2, a capacitor C3 and a capacitor C4, wherein: The CTRL terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the power supply VDD; The BYPASS terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the capacitor C2, and the other end of the capacitor C2 is grounded; The INP terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to one end of the capacitor C3, and the other end of the capacitor C3 is electrically connected to the audio signal output end of the MCU control subcircuit; The INN terminal of the audio power amplifier chip EG8305 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to one end of the capacitor C4, and the other end of the capacitor C4 is grounded; The GND terminal of the audio power amplifier chip EG8305 is grounded; The VDD terminal of the audio power amplifier chip EG8305 is connected to the power supply VDD and one end of the capacitor C1 respectively, and the other end of the capacitor C1 is grounded; The VOP terminal and the VON terminal of the audio power amplifier chip EG8305 are electrically connected to the first input terminal of the switching switch subcircuit as output terminals of the audio power amplifier subcircuit.

4. The voice coil motor driving circuit with switchable working modes according to claim 3, characterized in that: The H-bridge driving sub-circuit includes a driving chip DRV8837DSGR, a capacitor C5, a capacitor C6 and a capacitor C7, wherein: The VCC terminal of the driver chip DRV8837DSGR is connected to the power supply VDD and one end of the capacitor C6 respectively, and the other end of the capacitor C6 is grounded; The driver chip DRV8837DSGR Termination power supply VDD; The IN1 terminal and the IN2 terminal of the driving chip DRV8837DSGR are electrically connected to the PWM signal output terminal of the MCU control subcircuit respectively; The VM end of the driver chip DRV8837DSGR is respectively connected to the power supply VDD, one end of the capacitor C5 and one end of the capacitor C7, and the other ends of the capacitor C5 and the capacitor C7 are both grounded; The OUT1 and OUT2 terminals of the driver chip DRV8837DSGR are electrically connected to the second input terminal of the switch subcircuit as output terminals of the H-bridge driver subcircuit; The GND terminal of the driving chip DRV8837DSGR is grounded.

5. The voice coil motor driving circuit with switchable working modes according to claim 4, characterized in that: The switching subcircuit includes a double-pole double-throw relay K1, a diode D1 and a switching subcircuit, wherein: The two common ends of the double-pole double-throw relay K1 are connected to the voice coil motor; The two normally closed ends of the double-pole double-throw relay K1 are electrically connected to the output end of the audio power amplifier subcircuit as the first input end of the switching subcircuit; The two normally open ends of the double-pole double-throw relay K1 are electrically connected to the output end of the H-bridge drive subcircuit as the second input ends of the switching subcircuit; One end of the coil of the double-pole double-throw relay K1 is electrically connected to the power supply VDD and the negative electrode of the diode D1 respectively, and the other end of the coil of the double-pole double-throw relay K1 is electrically connected to the output end of the switching subcircuit respectively, and the input end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit as the control end of the switching switch subcircuit.

6. The voice coil motor driving circuit with switchable working modes according to claim 4, characterized in that: The switching subcircuit includes a double-pole double-throw relay K1, a diode D1 and a switching subcircuit, wherein: The two common ends of the double-pole double-throw relay K1 are connected to the voice coil motor; The two normally closed ends of the double-pole double-throw relay K1 are electrically connected to the output end of the H-bridge drive subcircuit as the second input ends of the switching subcircuit; The two normally open ends of the double-pole double-throw relay K1 are electrically connected to the output end of the audio power amplifier subcircuit as the first input end of the switching subcircuit; One end of the coil of the double-pole double-throw relay K1 is electrically connected to the power supply VDD and the negative electrode of the diode D1 respectively, and the other end of the coil of the double-pole double-throw relay K1 is electrically connected to the output end of the switching subcircuit respectively, and the input end of the switching subcircuit is electrically connected to the control signal output end of the MCU control subcircuit as the control end of the switching switch subcircuit.

7. The voice coil motor driving circuit with switchable working modes according to claim 5, characterized in that: The switching subcircuit includes a MOS tube Q1, a resistor R4 and a resistor R5, wherein: The drain of the MOS tube Q1 is connected to the output end of the switching sub-circuit and the other end of the coil of the double-pole double-throw relay K1; The source of MOS tube Q1 is grounded; The gate of the MOS tube Q1 is electrically connected to one end of the resistor R4 and one end of the resistor R5 respectively, the other end of the resistor R4 is grounded, and the other end of the resistor R5 is electrically connected to the control signal output end of the MCU control sub-circuit.

8. The voice coil motor driving circuit with switchable working modes according to claim 6, characterized in that: The MCU control subcircuit includes an MCU chip, and the MCU chip includes an audio decoding module.

9. The voice coil motor driving circuit with switchable working modes according to claim 8, characterized in that: The MCU control subcircuit also includes capacitor C8 and capacitor C9, wherein: The IO1 and IO2 terminals of the MCU chip are electrically connected to the input terminal of the H-bridge driving subcircuit as the PWM signal output terminals of the MCU control subcircuit; The IO3 terminal of the MCU chip is electrically connected to the control terminal of the switch subcircuit as the control signal output terminal of the MCU control subcircuit; The AUDIO terminal of the MCU chip is electrically connected to the input terminal of the audio power amplification subcircuit as the audio signal output terminal of the MCU control subcircuit; The VCC end of the MCU chip is electrically connected to the power supply VDD, one end of the capacitor C8 and one end of the capacitor C9 respectively, and the other end of the capacitor C8 and the other end of the capacitor C9 are grounded; The GND terminal of the MCU chip is grounded.

10. A game handle, characterized in that: A voice coil motor driving circuit with switchable working modes comprising any one of claims 1 to 9.

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