Motor driving circuit, method and device and storage medium

Abstract

The invention provides a motor driving circuit, method and device and a storage medium. The motor driving circuit includes: a driving circuit for outputting a driving signal; the driving enhancement circuit is used for enhancing the driving signal output by the driving circuit; and the motor vibrates based on the driving signal enhanced by the driving enhancement circuit. The driving enhancement circuit is additionally arranged between the motor driving circuit and the motor, so that the driving capability of the driving signal output by the driving circuit is enhanced, the waveform change speed of the driving signal output by the driving circuit is accelerated, the motor can vibrate according to the driving signal which can only be enhanced, the starting time and the braking time of the motor are optimized, and the service life of the motor is prolonged. And a clear, crisp and trailing-free vibration effect is realized.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a motor driving circuit, method, device and storage medium. Background Art

[0002] With the advancement of technology, people's requirements for mobile smart terminals used in daily life are getting higher and higher, and the requirements for motor performance in mobile smart terminals are also increasing.

[0003] When the user performs different operations on the terminal, the motor driver outputs different signals. The motor generates vibrations of different frequencies and amplitudes according to different signals. However, due to the limitations of the terminal structure and the motor's own specifications, software algorithm debugging cannot make the motor achieve a crisp, tail-free vibration effect. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a motor driving circuit, method, device and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a motor driving circuit is provided, comprising: a driving circuit for outputting a driving signal; a driving enhancement circuit for enhancing the driving signal output by the driving circuit; and a motor for vibrating based on the driving signal enhanced by the driving enhancement circuit.

[0006] In one embodiment, the drive signal includes a first signal and a second signal; the drive enhancement circuit includes a power input terminal, a first switch control circuit, a second switch control circuit and a third switch control circuit; the first switch control circuit and the second switch control circuit are used to be connected to the power input terminal when the drive circuit outputs the first signal, and enhance the first signal through the signal input from the power input terminal; the second switch control circuit and the third switch control circuit are used to be connected to the power input terminal when the drive circuit outputs the second signal, and enhance the second signal through the signal input from the power input terminal.

[0007] In one embodiment, the first switch control circuit includes a first transistor, the second switch control circuit includes a second transistor, and the third switch control circuit includes a third transistor; the control end of the first transistor serves as a signal input end for receiving the drive signal output by the drive circuit, the input end of the first transistor is connected to the control end of the second transistor, and the output end of the first transistor is grounded; the input end of the second transistor is used to receive the signal input by the power input end, and the output end of the second transistor serves as a signal output end to output an enhanced drive signal to the motor; the control end of the third transistor serves as a signal input end for receiving the drive signal output by the drive circuit, the input end of the third transistor serves as a signal output end to output an enhanced drive signal to the motor, and the output end of the third transistor is grounded.

[0008] In one implementation, the power input terminal is a power management chip, and the power management chip provides a power signal input for the driving enhancement circuit.

[0009] In one implementation, the driving enhancement circuit further includes: a switch protection circuit connected to the control end of the third transistor and the control end of the first transistor to prevent the second transistor and the third transistor from being turned on at the same time.

[0010] In one implementation, the switch protection circuit includes a diode, an anode of the diode is connected to the control end of the first transistor, and a cathode of the diode is connected to the control end of the third transistor.

[0011] In one implementation, the driving enhancement circuit further includes: a current limiting circuit connected to the first transistor, the second transistor, and the third transistor, respectively.

[0012] In one embodiment, the current limiting circuit includes a first resistor, a second resistor, and a third resistor; one end of the first resistor is connected to the signal output end of the driving circuit, the other end of the first resistor is connected to the control end of the first transistor, and the first resistor is used to control the driving signal flowing to the control end of the first transistor; one end of the second resistor is connected to the signal output end of the driving circuit, the other end of the second resistor is connected to the control end of the third transistor, and the second resistor is used to control the driving signal flowing to the control end of the third transistor. The power input end of the driving circuit and the other end are connected to the control end of the second transistor; one end of the third resistor is connected to the control end of the third transistor, and the other end of the third resistor is connected to the output end of the third transistor.

[0013] In one embodiment, the driving enhancement circuit further includes a current limiting circuit, which includes a third resistor and a fourth resistor; one end of the third resistor is connected to the power input end of the driving circuit, and the other end of the third resistor is connected to the control end of the second transistor, and the third resistor is a pull-up resistor; one end of the fourth resistor is connected to the control end of the third transistor, and the other end of the fourth resistor is connected to the output end of the third transistor, and the fourth resistor is a pull-down resistor. The signal output end of the driving circuit has the other end connected to the anode of the diode.

[0014] According to a second aspect of an embodiment of the present disclosure, a motor driving method is provided, comprising: when it is detected that a driving circuit outputs a driving signal, based on a driving enhancement circuit, enhancing the driving signal output by the driving circuit; and based on the driving signal enhanced by the driving enhancement circuit, controlling the vibration of the motor.

[0015] In one embodiment, the driving signal includes a first signal and a second signal, and the driving enhancement circuit includes a power input terminal, a first switch control circuit, a second switch control circuit, and a third switch control circuit; based on the driving enhancement circuit, the driving signal output by the driving circuit is enhanced, including: if the driving signal output by the driving circuit is the first signal, then the first switch control circuit and the second switch circuit are controlled to be turned on with the power input terminal to enhance the first signal; if the driving signal output by the driving circuit is the second signal, then the second switch control circuit and the third switch control circuit are controlled to be turned on with the power input terminal to enhance the second signal.

[0016] In one embodiment, the method further includes: if it is detected that the driving circuit stops outputting the driving signal, controlling the driving enhancement circuit to stop enhancing the driving signal.

[0017] In one embodiment, the driving enhancement circuit further includes a protection circuit: in response to a sudden change in the driving signal, based on the protection circuit, the driving signal after the sudden change is maintained unchanged.

[0018] According to a third aspect of an embodiment of the present disclosure, a motor driving device includes:

[0019] an enhancement unit, configured to enhance the drive signal output by the drive circuit based on the drive enhancement circuit when detecting that the drive circuit outputs the drive signal;

[0020] The control unit is used to control the vibration of the motor based on the driving signal enhanced by the driving enhancement circuit.

[0021] In one embodiment, the driving signal includes a first signal and a second signal, and the driving enhancement circuit includes a power input terminal, a first switch control circuit, a second switch control circuit and a third switch control circuit; the control unit adopts the following method to enhance the driving signal output by the driving circuit based on the driving enhancement circuit: if the driving signal output by the driving circuit is the first signal, the first switch control circuit and the second switch circuit are controlled to be turned on with the power input terminal to enhance the first signal; if the driving signal output by the driving circuit is the second signal, the second switch control circuit and the third switch control circuit are controlled to be turned on with the power input terminal to enhance the second signal.

[0022] In one implementation, the enhancement unit is further configured to: if it is detected that the driving circuit stops outputting the driving signal, control the driving enhancement circuit to stop enhancing the driving signal.

[0023] In one embodiment, the enhancement unit further includes a protection circuit, and the enhancement unit is further configured to: in response to a sudden change in the driving signal, maintain the driving signal unchanged after the sudden change based on the protection circuit.

[0024] According to a fourth aspect of an embodiment of the present disclosure, a motor driving device includes:

[0025] processor;

[0026] a memory for storing processor-executable instructions;

[0027] The processor is configured to: execute the method described in the first aspect or any one of the embodiments of the first aspect.

[0028] According to a fifth aspect of an embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute the playback control method described in the first aspect or any one of the embodiments of the first aspect.

[0029] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: by adding a drive enhancement circuit between the motor drive circuit and the motor, the driving capability of the drive signal output by the drive circuit is enhanced, thereby accelerating the speed of change of the waveform of the drive signal output by the drive circuit, and then enabling the motor to vibrate according to the enhanced drive signal, thereby optimizing the start time and braking time of the motor, and achieving a crisp, tail-free vibration effect.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0032] Figure 1 is a schematic diagram showing a specific position inside a motor terminal according to an exemplary embodiment.

[0033] Figure 2 2 is a diagram showing different signal waveforms of a motor drive output according to an exemplary embodiment.

[0034] Figure 3 is a schematic diagram of a motor driving circuit according to an exemplary embodiment.

[0035] Figure 4 is a schematic diagram of a motor driving circuit according to an exemplary embodiment.

[0036] Figure 5 is a flow chart of a motor driving method according to an exemplary embodiment.

[0037] Figure 6 is a schematic diagram of a motor driving circuit according to an exemplary embodiment.

[0038] Figure 7 is a schematic diagram of a motor driving circuit according to an exemplary embodiment.

[0039] Figure 8 is a circuit diagram of a motor driving circuit according to an exemplary embodiment.

[0040] Fig. 9 is a flow chart of a motor driving method according to an exemplary embodiment.

[0041] Fig.10 is a circuit diagram of a low-level conduction driving circuit according to an exemplary embodiment.

[0042] Fig.11 is a circuit diagram of a high-level conduction driving circuit according to an exemplary embodiment.

[0043] Fig.12 is a schematic diagram of a motor driving circuit according to an exemplary embodiment.

[0044] Fig.13 is a flow chart of a motor driving method according to an exemplary embodiment.

[0045] Fig.14is a schematic diagram of a motor driving circuit according to an exemplary embodiment.

[0046] Fig.15 is a flow chart of a motor driving method according to an exemplary embodiment.

[0047] Fig.16 A circuit diagram of a motor driving circuit is shown according to an exemplary embodiment.

[0048] Fig.17 is a waveform diagram of a motor drive according to an exemplary embodiment.

[0049] Fig.18 is a block diagram of a motor driving device according to an exemplary embodiment.

[0050] Fig.19 It is a block diagram of a device for controlling playback according to an exemplary embodiment. DETAILED DESCRIPTION

[0051] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure.

[0052] The motor drive circuit provided by the present disclosure is applied to terminal motor drive scenarios, for example: applied to mobile phone motor drive scenarios.

[0053] In smart terminals used in people's lives, motor vibrations can be used to indicate events such as incoming calls, text messages, key inputs, alarms, etc. The voltage required for the normal operation of the motor is provided by the motor driver chip, and the motor driver chip can be used as a switch to control the start and stop of the motor. At present, the motors in terminals are mainly divided into three categories, namely rotor motors, linear motors and piezoelectric ceramic motors.

[0054] Among them, the rotor motor is a DC drive motor. When the rotor motor is working, the energized coil receives the Ampere force in the magnetic field, driving the eccentric wheel to rotate and generate centrifugal force, thereby causing the motor to vibrate. However, the vibration sense of the rotor motor is weak, and due to the DC drive, it cannot achieve multiple vibration modes, and the response speed of starting and stopping is slow, which cannot give users a good vibration experience.

[0055] The linear motor is an AC drive motor. When the linear motor is working, the counterweight is constantly pushed out and pulled back by the spring in the magnetic field, causing the linear motor to vibrate. The AC power that drives the linear motor can instantly generate high voltage, making the start and stop response speed of the linear motor faster. However, the vibration intensity of the linear motor is limited by the resonant frequency of the spring, and the drive must be near the resonant frequency, otherwise it will cause the vibration intensity of the linear motor to decrease. The linear motor is divided into a transverse linear motor and a longitudinal linear motor. Among them, in the longitudinal linear motor, the spring moves up and down to make the motor vibrate, but if the spring is too large, the terminal will be too thick, and if the spring is too small, the vibration will not be obvious. The transverse linear motor has a long vibration stroke, which can achieve a richer and more delicate vibration, and the motor vibration intensity is richer. However, due to the long stroke of the transverse linear motor, the transverse linear motor will be larger, thereby occupying the space of other devices inside the terminal, and the larger transverse linear motor has higher requirements for the layout design of the motherboard in the terminal. Figure 1 FIG. 1 is a schematic diagram showing a specific position inside a motor terminal according to an exemplary embodiment. Figure 1 As shown, the motor 1 occupies a certain space inside the terminal, and forms an electrical performance connection through the connector and the driving circuit on the main board of the device. The internal structure of the terminal is tight. If the motor is too large, it will occupy the space position of other devices, affecting the performance of other devices, and thus affecting the terminal performance.

[0056] The essence of the output voltage of the linear motor driver chip is a pulse width modulation (PWM) waveform. Figure 2 It is a different signal waveform output by the motor driver according to an exemplary embodiment. When the user performs different operations, the motor driver outputs different signal waveforms according to the user operation, and the user motor achieves different vibration effects according to different signal waveforms. Different signal waveforms actually correspond to different PWM voltage waveforms. For example, when the user types on the numeric keyboard, inputs text using the input method, takes photos with the camera, takes continuous photos with the camera, takes screenshots, clears tasks, receives system notifications, displays floating pop-up windows, etc., the motor driver outputs Figure 2 The motor vibrates based on the PWM voltage waveform corresponding to the signal waveform, so that users can get different vibration experiences under different operations. However, due to the limitations of the terminal's internal structure, the motor drive, and the motor's own specifications, the motor cannot achieve crisp and tail-free vibration, and cannot achieve the vibration effect of quick start and quick stop.

[0057] Therefore, the present disclosure provides a motor driving method, which enhances the driving signal output by the motor through a driving enhancement circuit, so that the rising and falling edges of the driving signal are accelerated. The motor can vibrate according to the enhanced driving signal, thereby reducing the motor starting time and braking time, and achieving a crisp and tail-free vibration effect of the motor.

[0058] Figure 3 is a schematic diagram of a motor driving circuit according to an exemplary embodiment. Figure 3 As shown, the motor driving circuit 100 is a circuit used for driving a motor in a terminal, and includes: a driving circuit 11, a driving enhancement circuit 12, and a motor 13.

[0059] The driving circuit 110 is used to output a driving signal.

[0060] The driving circuit 11 includes a CPU control module 111 , a battery module 112 and a motor driving module 113 .

[0061] In the present disclosure, Figure 4 is a schematic diagram of a motor driving circuit according to an exemplary embodiment. Figure 4 As shown, the CPU control module 111 is connected to the motor drive module 113, and the CPU control module 111 controls the motor drive module 113 to output a drive signal. The battery module 112 is connected to the motor drive module 113, and the battery module 112 supplies power to the motor drive module 113.

[0062] The CPU control module 111 includes a central processing unit (CPU) and other control chips.

[0063] The motor driving module 11 has two output terminals, one of which is grounded, and the other provides a driving signal to the driving enhancement circuit 12 .

[0064] The driving enhancement circuit 12 is used to enhance the driving signal output by the driving circuit.

[0065] In the disclosed embodiment, the driving circuit 11 is connected to the driving enhancement circuit 12. The driving enhancement circuit 12 enables the driving signal output by the driving circuit 11 to have stronger energy, thereby driving the motor 13 better.

[0066] The motor 13 vibrates based on the driving signal enhanced by the driving enhancement circuit 12 .

[0067] In the disclosed embodiment, the driving enhancement circuit 12 is connected to the motor 13, so that the motor 13 can obtain the enhanced driving signal output by the driving enhancement circuit 12 and vibrate based on the driving signal enhanced by the driving enhancement circuit.

[0068] Figure 5 is a flow chart of a motor driving method according to an exemplary embodiment. Figure 5As shown, the motor driving method is used in a terminal, comprising the following steps:

[0069] In step S11 , when it is detected that the driving circuit outputs a driving signal, the driving signal output by the driving circuit is enhanced based on the driving enhancement circuit.

[0070] In the disclosed embodiment, when the CPU control module 111 detects the output signal of the motor driving module 113 , the CPU control module 111 enhances the output signal of the motor driving module 113 through the driving enhancement circuit 112 .

[0071] In step S12, the motor vibration is controlled based on the drive signal amplified by the drive enhancement circuit.

[0072] In the embodiment of the present disclosure, based on the driving signal enhanced by the driving enhancement circuit, the CPU controls the motor to vibrate according to the driving signal enhanced by the driving enhancement circuit 12 .

[0073] The embodiment of the present disclosure provides a motor driving circuit, which includes a driving circuit, a driving enhancement circuit and a motor. The driving enhancement circuit enhances the driving signal output by the driving circuit, thereby obtaining a driving signal with stronger driving capability, so that the motor vibrates according to the enhanced driving signal, thereby optimizing the starting time and braking time of the motor, and further achieving a crisp, tail-free, fast-starting and fast-stopping vibration effect of the terminal motor.

[0074] In the embodiment of the present disclosure, the driving signal output by the driving circuit 101 may be a level signal.

[0075] The level signal may be a periodic signal.

[0076] The driving signal includes a first signal and a second signal.

[0077] The first signal and the second signal may be signals corresponding to different levels in the same cycle. For example, the first signal may be a high-level signal in a certain cycle, and the second signal may be a low-level signal in the same cycle; or the first signal may be a low-level signal in a certain cycle, and the second signal may be a high-level signal in the same cycle.

[0078] In the disclosed embodiment, Figure 6 is a schematic diagram of a motor driving circuit according to an exemplary embodiment. Figure 6 As shown, the driving enhancement circuit includes a power input terminal 121 , a first switch control circuit 122 , a second switch control circuit 123 and a third switch control circuit 124 .

[0079] The first switch control circuit 122 and the second switch control circuit 123 are used to be connected to the power input terminal 121 when the driving circuit 11 outputs the first signal, and enhance the first signal through the signal input from the power input terminal.

[0080] In one example, if the first signal output by the driving circuit 11 is a low level signal or a high level signal, the first switch control circuit 122 and the second switch control circuit 123 are connected to the power input terminal 121 to enhance the first signal based on the signal input from the power input terminal.

[0081] The second switch control circuit 123 and the third switch control circuit 124 are used to be connected to the power input terminal 121 when the driving circuit outputs the second signal, and enhance the second signal through the signal input from the power input terminal.

[0082] In one example, if the second signal output by the driving circuit 11 is a high level signal or a low level signal, the second switch control circuit 123 and the third switch control circuit 124 are connected to the power input terminal 121 to enhance the second signal through the signal input by the power input terminal.

[0083] In the present disclosure, Figure 7 is a schematic diagram of a motor driving circuit according to an exemplary embodiment. Figure 7 As shown, the first switch control circuit 122 includes a first transistor 1221 , the second switch control circuit 123 includes a second transistor 1222 , and the third switch control circuit 124 includes a third transistor 1223 .

[0084] In the embodiment of the present disclosure, the first transistor 1221, the second transistor 1222 and the third transistor 1223 may be metal oxide semiconductor field effect transistors (MOSFET); or the first transistor 1221, the second transistor 1222 and the third transistor 1223 may be semiconductor triodes. Among them, the MOSFET tube may be an N-channel MOSFET tube (N-MOSFET) or a P-channel MOSFET tube (P-MOSFET); the semiconductor triode may be a PNP triode or an NPN triode.

[0085] In the embodiment of the present disclosure, the selection of the transistor is related to the voltage inputted by the power input terminal 121 .

[0086] In one example, the driving voltage of the transistor in the driving enhancement circuit 12 is generally selected to be less than or equal to the difference between the voltage input at the power input terminal and the voltage between the transistor control terminal and the output terminal. For example, the maximum value of the gate driving voltage of the triode needs to be selected from the power tube driven by low voltage.

[0087] In the embodiment of the present disclosure, the control end of the first transistor serves as a signal input end for receiving a driving signal output by the driving circuit. The input end of the first transistor is connected to the control end of the second transistor, and the output end of the first transistor is grounded.

[0088] In one example, the first transistor 1221 , the second transistor 1222 , and the third transistor 1223 are all N-channel MOSFETs for illustration. Figure 8 FIG. 1 is a circuit diagram of a motor driving circuit according to an exemplary embodiment. Figure 8 As shown, Q1 represents the first N-channel MOSFET tube, Q2 represents the second N-channel MOSFET tube, and Q3 represents the third N-channel MOSFET tube. The gate of the first N-channel MOSFET tube serves as the signal input end of the driving enhancement circuit, the drain of the first N-channel MOSFET tube is connected to the gate of the second N-channel MOSFET tube, and the source of the first N-channel MOSFET tube is grounded.

[0089] In the embodiment of the present disclosure, the input end of the second transistor is used to receive a signal input from the power input end, and the output end of the second transistor serves as a signal output end to output an enhanced driving signal to the motor.

[0090] In an example, Figure 8 As shown, the drain of the second N-channel MOSFET tube is used to receive the signal input from the power input terminal, and the source of the second N-channel MOSFET tube serves as the signal output terminal to output the enhanced driving signal to the motor.

[0091] In the embodiment of the present disclosure, the control end of the third transistor serves as a signal input end for receiving a driving signal output by the driving circuit, the input end of the third transistor serves as a signal output end for outputting an enhanced driving signal to the motor, and the output end of the third transistor is grounded.

[0092] In an example, Figure 8 As shown, the gate of the third N-channel MOSFET tube serves as a signal input terminal for receiving a driving signal output by a driving circuit, the drain of the third N-channel MOSFET tube serves as a signal output terminal for outputting an enhanced driving signal to the motor, and the source of the third N-channel MOSFET tube is grounded.

[0093] In the embodiment of the present disclosure, the driving enhancement circuit further includes a load capacitor, wherein one end of the load capacitor is grounded, and the other end of the load capacitor is connected to the output end of the second transistor, that is, connected to the output signal of the driving enhancement circuit.

[0094] The load capacitor can be used for charging or discharging.

[0095] The load capacitor can also be used to filter the output drive signal.

[0096] In the disclosed embodiment, the power input terminal is a power management chip, and the power management chip provides a power signal input for the driving circuit.

[0097] The source management chip may be a low dropout linear regulator (Low Dropout Regulator, LDO).

[0098] The source management chip is connected to the battery module 112 in the driving circuit 11 to supply power to the entire driving enhancement circuit 12. The source management chip is also connected to the central processing unit control module 111 in the driving circuit 11 and is controlled by the central processing unit control module 111.

[0099] In one example, when it is detected that the driving circuit outputs a driving signal, the CPU controls the power management chip to supply power to the driving enhancement circuit.

[0100] In one example, when it is detected that the driving circuit stops outputting the driving signal, the CPU controls the power management chip to stop supplying power to the driving enhancement circuit.

[0101] Fig. 9 is a flow chart of a motor driving method according to an exemplary embodiment. Fig. 9 As shown, the motor driving method is used in a terminal, comprising the following steps:

[0102] In step S21 , based on the driving enhancement circuit, the driving signal output by the driving circuit is enhanced.

[0103] In step S221 , the driving signal output by the driving circuit is a first signal.

[0104] In step S222, the first switch control circuit and the second switch control circuit are controlled to be connected to the power input terminal to enhance the first signal.

[0105] In the embodiment of the present disclosure, it is detected that the driving circuit outputs a first signal, and the CPU controls the power management chip to supply power to the driving enhancement circuit, wherein the first switch control circuit and the second switch control circuit in the driving enhancement circuit are turned on. Based on the first switch control circuit in the driving enhancement circuit, the first signal is enhanced.

[0106] In one example, N-MOSFET or NPN transistor is selected as the transistor of the first switch control circuit and the second switch control circuit. When the first signal is output to the driving circuit and the first signal is at a low level, the power management chip supplies power to the driving enhancement circuit, and the control end of the first transistor in the first switch control circuit and the control end of the second transistor in the second switch control circuit are both in a high-level conduction state to enhance the low-level signal.

[0107] In one example, Fig.10 : is a circuit diagram of a low-level conduction drive circuit according to an exemplary embodiment. Among them, Q1 is the first N-MOSFET tube, Q2 is the second N-MOSFET tube, and Q3 is the third N-MOSFET tube. Point a represents the gate voltage of Q1; point b represents the output signal of the drive enhancement circuit; point c represents the gate voltage of Q2, and can also represent the drain voltage of Q1; point d represents the gate voltage of Q3. VCC represents the voltage received by the power input terminal, wherein on means that the power input terminal receives the voltage; off means that the power input terminal does not receive the voltage. The load capacitance can be represented by C1.

[0108] like Fig.10 As shown in the figure, when the driving signal output by the driving circuit is a low-level signal, the gate level of Q1 is low-level, and Q1 is in the off state. The voltage at point c is pulled up to the high-level voltage of VCC, and at this time, the gate level of Q2 is high-level and turned on; at the same time, Q3 is turned off. The capacitance at point b is quickly charged from the VCC power supply to the load capacitance C1 due to the conduction of Q2. When the driving signal is low-level, by turning on Q1 and Q2, the driving circuit is connected to VCC, the driving circuit voltage is enhanced, and thus the driving ability of the low-level signal in the driving circuit is enhanced.

[0109] In one example, P-MOSFET or PNP transistor is selected as the transistor of the first switch control circuit and the second switch control circuit. When the first signal is output to the driving circuit and the first signal is at a high level, the power management chip supplies power to the driving enhancement circuit, and the control ends of the first transistor in the first switch control circuit and the second transistor in the second switch control circuit are both in a low-level conduction state to enhance the high-level signal.

[0110] Among them, the driving enhancement circuit of selecting P-MOSFET or PNP transistor as the transistor of the first switch control circuit and the second switch control circuit is logically opposite to the driving enhancement circuit of selecting N-MOSFET or NPN transistor as the transistor of the first switch control circuit and the second switch control circuit, and will not be elaborated here.

[0111] In step S231 , the driving signal output by the driving circuit is a second signal.

[0112] In step S232, the second switch control circuit and the third switch control circuit are controlled to be connected to the power input terminal to enhance the second signal.

[0113] In the embodiment of the present disclosure, it is detected that the driving circuit outputs the second signal, and the CPU controls the power management chip to supply power to the driving enhancement circuit, wherein the second switch control circuit in the driving enhancement circuit is turned off and the third switch control circuit is turned on. Based on the second switch control circuit and the third switch control circuit in the driving enhancement circuit, the second signal is enhanced.

[0114] In one example, N-MOSFET or NPN transistor is selected as the transistor of the second switch control circuit and the third switch control circuit. When the second signal is output to the driving circuit and the second signal is at a high level, the power management chip supplies power to the driving enhancement circuit, the control end of the second transistor in the second switch control circuit is in a low-level off state, and the control end of the third transistor in the third switch control circuit is in a high-level on state, thereby enhancing the high-level signal.

[0115] In one example, Fig.11 is a circuit diagram of a high-level conduction driving circuit according to an exemplary embodiment. Fig.11 The meaning of each device and each point in the Fig.10 The same, I will not go into details here.

[0116] like Fig.11 As shown in the figure, when the driving signal output by the driving circuit is a high-level signal, the gate level of Q1 is high-level, Q1 is in the on state, and the level at point c is pulled to the source voltage of Q1, that is, point c is grounded, which is a low level. At this time, the gate level of Q2 is in a low-level state, Q2 is in the off state, and the source voltage of Q2 is VCC. At point d, Q3 is in the on state, and the drain voltage of Q3 is connected to the source of Q2, so the drain voltage of Q3 is VCC, which quickly discharges the energy of the storage capacitor at point b to the ground; at this time, the load capacitor C1 is discharged rapidly. When the driving signal is at a high level, by turning off Q2 and turning on Q3, the driving circuit is connected to VCC, the driving circuit voltage is enhanced, and thus the driving ability of the high-level signal in the driving circuit is enhanced.

[0117] In one example, P-MOSFET or PNP transistor is selected as the transistor of the second switch control circuit and the third switch control circuit. When the second signal is output to the driving circuit and the second signal is at a low level, the power management chip supplies power to the driving enhancement circuit, the control end of the second transistor in the second switch control circuit is in a high-level off state, and the control end of the third transistor in the third switch control circuit is in a low-level on state, thereby enhancing the low-level signal.

[0118] Among them, the driving enhancement circuit of P-MOSFET or PNP transistor as the transistor of the second switch control circuit and the third switch control circuit is logically opposite to the driving enhancement circuit of N-MOSFET or NPN transistor as the transistor of the second switch control circuit and the third switch control circuit, and no further details will be given here.

[0119] In the disclosed embodiment, the transistors in the drive enhancement circuit achieve different on or off states based on the different levels of the drive signal, so that the energy of VCC is added to the drive signal, so that the drive signal has stronger energy and the driving ability of the drive signal is improved. Then, the motor receives the drive signal with high energy and responds to the drive signal quickly to achieve a crisp vibration effect without tailing.

[0120] In the embodiment of the present disclosure, the driving enhancement circuit further includes a switch protection circuit, wherein the switch protection circuit is connected to the control end of the third transistor and the control end of the first transistor to prevent the second transistor and the third transistor from being turned on at the same time.

[0121] in, Fig.12 is a schematic diagram of a motor driving circuit according to an exemplary embodiment. Fig.12 As shown, the switch protection circuit 125 includes a diode, wherein the anode of the diode is connected to the control terminal of the first transistor, and the cathode of the diode is connected to the control terminal of the third transistor.

[0122] In an example, Figure 8 As shown, the anode of the diode is connected to the gate of the first N-channel MOSFET tube, and the cathode of the diode is connected to the gate of the third N-channel MOSFET tube.

[0123] In one example, when the driving signal received by the signal input terminal in the driving enhancement circuit changes from a high-level signal to a low-level signal, the gate signal of the third N-channel MOSFET tube may not be converted from a high level to a low level in time. At this time, if the gate signal of the third N-channel MOSFET tube is higher than the driving signal received by the input terminal, signal backflow will occur, and the backflow signal will be superimposed on the driving signal received by the input terminal, thereby affecting the frequency and peak value of the driving signal received by the input terminal, and thus making the motor unable to work normally. If the backflow signal is too large, the backflow signal will be superimposed on the driving signal received by the input terminal to generate a high-level signal, thereby turning on the first N-channel MOSFET tube and the second N-channel MOSFET tube, thereby causing the MOSFET tube to be damaged. Therefore, in the embodiment of the present disclosure, a diode is used as a switch protection circuit to avoid signal backflow and affect the driving signal.

[0124] Fig.13 is a flow chart of a motor driving method according to an exemplary embodiment. Fig.13 As shown, the motor driving method is used in a terminal, comprising the following steps:

[0125] In step S31, a sudden change occurs in response to a driving signal.

[0126] The sudden change of the driving signal may be that a first signal which is a low-level signal suddenly changes into a second signal which is a high-level signal.

[0127] The sudden change of the driving signal may be that the second signal which is a low-level signal suddenly changes to the first signal which is a high-level signal.

[0128] In step S32, based on the protection circuit, the driving signal after the mutation is maintained unchanged.

[0129] In the disclosed embodiment, when the driving signal output by the driving circuit switches from a high-level signal to a low-level signal, the level of the control end of the third transistor cannot change immediately. At this time, the level of the control end of the third transistor is still at a high level, and the protection circuit prevents the signal from flowing back, thereby ensuring that the driving signal is not superimposed, thereby ensuring the timeliness of the driving signal.

[0130] In the embodiment of the present disclosure, the driving enhancement circuit further includes a current limiting circuit. Fig.14 is a schematic diagram of a motor driving circuit according to an exemplary embodiment. Fig.14 As shown, the current limiting circuit 126 is connected to the first transistor, the second transistor, and the third transistor respectively.

[0131] The current limiting circuit 126 includes a first resistor and a second resistor.

[0132] In the embodiment of the present disclosure, one end of the first resistor is connected to the signal output end of the driving circuit, and the other end of the first resistor is connected to the control end of the first transistor. The first resistor is used to control the driving signal flowing to the control end of the first transistor.

[0133] Among them, resistance can be represented by R.

[0134] In an example, Figure 8 As shown, one end of the resistor R1 is connected to the signal output end of the driving circuit, and the other end of the resistor R1 is connected to the gate of the first N-channel MOSFET tube.

[0135] In the embodiment of the present disclosure, one end of the second resistor is connected to the signal output end of the driving circuit, and the other end of the second resistor is connected to the control end of the third transistor. The second resistor is used to control the driving signal flowing to the control end of the third transistor.

[0136] In an example, Figure 8As shown, one end of the resistor R2 is connected to the signal output end of the driving circuit, and the other end of the resistor R2 is connected to the gate of the third N-channel MOSFET tube.

[0137] In the embodiment of the present disclosure, when the driving amplification circuit receives a sudden change signal, the resistor R1 and the resistor R2 are used to prevent the driving signal from experiencing capacitor and inductor oscillation.

[0138] In the disclosed embodiment, the resistor R1 is connected in series with the gate of the first N-channel MOSFET tube, and the resistor R2 is connected in series with the gate of the third N-channel MOSFET tube, which can reduce the peak current during gate charging when the gate voltage is pulled high.

[0139] In the disclosed embodiment, the resistor R1 is connected in series with the gate of the first N-channel MOSFET tube, and the resistor R2 is connected in series with the gate of the third N-channel MOSFET tube. When the MOSFET tube changes from the on state to the off state, the gate slows down the discharge speed of the capacitor to protect the drain and source of the MOSFET tube from breakdown.

[0140] The current limiting circuit 126 includes a third resistor and a fourth resistor.

[0141] In the disclosed embodiment, one end of the third resistor is connected to the power input end of the driving circuit, and the other end of the third resistor is connected to the control end of the second transistor. The third resistor is a pull-up resistor.

[0142] In an example, Figure 8 As shown, one end of the resistor R3 is connected to the power input end of the driving circuit, and the other end of the resistor R3 is connected to the gate of the second N-channel MOSFET tube.

[0143] In one example, the resistor R3 is a pull-up resistor, and the gate of the second N-channel MOSFET tube is kept consistent with the power input terminal signal of the driving circuit through the resistor R3. The resistance value of the resistor R3 is related to the second N-channel MOSFET tube. For example, the resistance value of the resistor R3 cannot be too small. If the resistance value of the resistor R3 is too small, the second N-channel MOSFET tube will be subjected to excessive current when it is turned on, thereby causing damage to the MOSFET tube. The resistance value of the resistor R3 cannot be too large. If the resistance value of the resistor R3 is too large, the gate voltage of the second N-channel MOSFET tube will rise slowly, thereby affecting the performance of the second N-channel MOSFET tube.

[0144] In the embodiment of the present disclosure, one end of the fourth resistor is connected to the control end of the third transistor, the other end of the fourth resistor is connected to the output end of the third transistor, and the fourth resistor is a pull-down resistor.

[0145] In an example, Figure 8As shown, one end of the resistor R4 is connected to the gate of the third N-channel MOSFET tube, and the other end of the resistor R4 is connected to the source of the third N-channel MOSFET tube and is grounded.

[0146] In one example, the resistor R4 is a pull-down resistor, and the gate of the third N-channel MOSFET tube can be grounded through the resistor R4, thereby preventing the third N-channel MOSFET tube from being accidentally turned on.

[0147] In the disclosed embodiment, a driving enhancement circuit consisting of a current limiting circuit, a switch protection circuit, a first switch control circuit and a second switch control circuit is added between the driving circuit and the motor to enhance the driving signal output by the driving circuit so that the motor can vibrate according to the enhanced driving signal, thereby achieving a crisp vibration effect without tailing.

[0148] In the embodiment of the present disclosure, when it is detected that the driving circuit outputs a driving signal, the power supply input terminal is controlled to supply power to the driving enhancement circuit.

[0149] In the embodiment of the present disclosure, when it is detected that the driving circuit stops outputting the driving signal, the power input terminal is controlled to stop supplying power to the driving enhancement circuit.

[0150] Fig.15 is a flow chart of a motor driving method according to an exemplary embodiment. Fig.15 As shown, the motor driving method is used in a terminal, comprising the following steps:

[0151] In step S41, it is detected that the drive circuit stops outputting the drive signal.

[0152] In step S42, the drive boosting circuit is controlled to stop boosting the drive signal.

[0153] In the embodiment of the present disclosure, the power input terminal can be controlled to stop supplying power to the driving enhancement circuit, thereby controlling the driving enhancement circuit to stop enhancing the driving signal.

[0154] In one example, Fig.16 A circuit diagram of a motor drive circuit is shown according to an exemplary embodiment. Fig.16 As shown, it is detected that the driving circuit stops inputting the driving signal, and the CPU controls the power management chip to stop outputting the voltage, then the power input end of the driving enhancement circuit stops supplying power to the driving enhancement circuit, and the first switch control circuit, the second switch control circuit and the third switch control circuit in the driving enhancement circuit are all in the cut-off state, that is, the driving enhancement circuit is not conducting, and the output of the driving enhancement circuit is in a high impedance state.

[0155] In the embodiment of the present disclosure, when it is detected that the driving circuit stops outputting the driving signal, the driving enhancement circuit is controlled to stop enhancing the driving signal, so that the motor stops working, thereby ensuring that the motor is still controlled by the driving signal output by the driving circuit, thereby enabling the motor driving circuit to work normally.

[0156] In the disclosed embodiment, the gate capacitance and gate voltage in the MOSFET tube affect the speed at which the MOSFET is turned on or off. The gate capacitance of the MOSFET light can be determined based on parameters such as the input capacitance, the output capacitance, and the reverse transfer capacitance. Combined with the formula, I0 = C*du / dt, where I0 represents the output drive current, C represents the gate capacitance in the MOSFET tube, u represents the gate voltage, and d() represents the derivative. By making the gate capacitance and the gate voltage relatively unchanged in the drive enhancement circuit, the switching speed dt is reduced, and thus the output drive current I0 is increased.

[0157] In the disclosed embodiment, VCC is introduced into the driving enhancement circuit to increase the driving current in the driving enhancement circuit, thereby reducing the switching time and achieving a faster switching speed, thereby accelerating the voltage change, improving the response time of the motor, and reducing the driving time and braking time of the motor, achieving a crisper vibration.

[0158] In the disclosed embodiment, Fig.17 is a waveform diagram of a motor drive according to an exemplary embodiment, such as Fig.16 As shown, 2 is the driving signal, and 3 is the driving signal enhanced by the driving enhancement circuit. When it is detected that the driving circuit outputs the driving signal 2, the driving enhancement circuit is controlled to enhance the driving signal 2. Among them, the driving enhancement circuit introduces other power supplies into the circuit to increase the current in the driving enhancement circuit, thereby accelerating the rising speed and the falling speed of the driving signal 2, and obtaining the driving signal 3 enhanced by the driving enhancement circuit. The driving signal enhanced by the driving enhancement circuit has a shorter response time, and a faster conversion speed from high to low level, thereby achieving a faster switching speed, making the motor vibration crisper.

[0159] Based on the same concept, the embodiment of the present disclosure also provides a playback control device.

[0160] It is understandable that the playback control device provided by the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0161] Fig.18 FIG. 1 is a block diagram of a motor driving device according to an exemplary embodiment. Fig.17 The motor driving device 200 includes an enhancement unit 201 and a control unit 202 .

[0162] The enhancement unit 201 is used to enhance the driving signal output by the driving circuit based on the driving enhancement circuit when it is detected that the driving circuit outputs the driving signal;

[0163] The control unit 202 is used to control the vibration of the motor based on the driving signal enhanced by the driving enhancement circuit.

[0164] In one implementation mode, a driving signal includes a first signal and a second signal, and a driving enhancement circuit includes a power input terminal, a first switch control circuit, a second switch control circuit, and a third switch control circuit; the control unit 202 enhances the driving signal output by the driving circuit based on the driving enhancement circuit in the following manner: if the driving signal output by the driving circuit is the first signal, the first switch control circuit and the second switch control circuit are controlled to be turned on with the power input terminal to enhance the first signal; if the driving signal output by the driving circuit is the second signal, the second switch control circuit and the third switch control circuit are controlled to be turned on with the power input terminal to enhance the second signal.

[0165] In one implementation, the enhancement unit 201 is further configured to: if it is detected that the driving circuit stops outputting the driving signal, control the driving enhancement circuit to stop enhancing the driving signal.

[0166] In one implementation, the enhancement unit 201 further includes a protection circuit, and the enhancement unit is further configured to: in response to a sudden change in the driving signal, maintain the driving signal unchanged after the sudden change based on the protection circuit.

[0167] Fig.19is a block diagram of a motor control device 300 according to an exemplary embodiment. For example, the device 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0168] Reference Fig.19 , the device 300 may include one or more of the following components: a processing component 302 , a memory 304 , a power component 306 , a multimedia component 308 , an audio component 310 , an input / output (I / O) interface 312 , a sensor component 314 , and a communication component 316 .

[0169] The processing component 302 generally controls the overall operation of the device 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 302 may include one or more modules to facilitate the interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.

[0170] The memory 304 is configured to store various types of data to support operations on the device 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phone book data, messages, pictures, videos, etc. The memory 304 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.

[0171] The power component 306 provides power to the various components of the device 300. The power component 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 300.

[0172] The multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0173] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC), and when the device 300 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 304 or sent via the communication component 316. In some embodiments, the audio component 310 also includes a speaker for outputting audio signals.

[0174] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0175] The sensor assembly 314 includes one or more sensors for providing various aspects of the status assessment of the device 300. For example, the sensor assembly 314 can detect the open / closed state of the device 300, the relative positioning of components, such as the display and keypad of the device 300, the sensor assembly 314 can also detect the position change of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration / deceleration of the device 300, and the temperature change of the device 300. The sensor assembly 314 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 314 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 314 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0176] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices. The device 300 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 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 316 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.

[0177] In an exemplary embodiment, the apparatus 300 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 to perform the above method.

[0178] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, and the instructions can be executed by the processor 320 of the device 300 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0179] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0180] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0181] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0182] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0183] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0184] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure.

[0185] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A motor drive circuit, characterized in that: include: A driving circuit, used for outputting a driving signal; A driving enhancement circuit, used for enhancing the driving signal output by the driving circuit; The motor vibrates based on the drive signal amplified by the drive enhancement circuit.

2. The motor driving circuit according to claim 1, characterized in that: The driving signal includes a first signal and a second signal; The driving enhancement circuit includes a power input terminal, a first switch control circuit, a second switch control circuit and a third switch control circuit; The first switch control circuit and the second switch control circuit are used to be connected to the power input terminal when the driving circuit outputs the first signal, and enhance the first signal through the signal input from the power input terminal; The second switch control circuit and the third switch control circuit are used to be connected to the power input terminal when the driving circuit outputs the second signal, and to enhance the second signal through the signal input from the power input terminal.

3. The motor driving circuit according to claim 2, characterized in that: The first switch control circuit includes a first transistor, the second switch control circuit includes a second transistor, and the third switch control circuit includes a third transistor; The control terminal of the first transistor is used as a signal input terminal for receiving a driving signal output by the driving circuit, the input terminal of the first transistor is connected to the control terminal of the second transistor, and the output terminal of the first transistor is grounded; The input end of the second transistor is used to receive the signal input from the power input end, and the output end of the second transistor is used as a signal output end to output an enhanced driving signal to the motor; The control end of the third transistor serves as a signal input end for receiving a driving signal output by the driving circuit. The input end of the third transistor serves as a signal output end for outputting an enhanced driving signal to the motor. The output end of the third transistor is grounded.

4. The motor drive circuit according to claim 2 or 3, characterized in that: The power input terminal is a power management chip, and the power management chip provides a power signal input for the driving enhancement circuit.

5. The motor driving circuit according to claim 3, characterized in that: The driving enhancement circuit further includes: A switch protection circuit is connected to the control end of the third transistor and the control end of the first transistor to prevent the second transistor and the third transistor from being turned on at the same time.

6. The motor driving circuit according to claim 5, characterized in that: The switch protection circuit includes a diode, The anode of the diode is connected to the control end of the first transistor, and the cathode of the diode is connected to the control end of the third transistor.

7. The motor driving circuit according to claim 3, characterized in that: The driving enhancement circuit further includes: The current limiting circuit is connected to the first transistor, the second transistor and the third transistor respectively.

8. The motor driving circuit according to claim 7, characterized in that: The current limiting circuit comprises a first resistor and a second resistor; One end of the first resistor is connected to the signal output end of the driving circuit, and the other end of the first resistor is connected to the control end of the first transistor, and the first resistor is used to control the driving signal flowing to the control end of the first transistor; One end of the second resistor is connected to the signal output end of the driving circuit, and the other end of the second resistor is connected to the control end of the third transistor. The second resistor is used to control the driving signal flowing to the control end of the third transistor.

9. The motor drive circuit according to claim 5 or 6, characterized in that: The driving enhancement circuit further includes a current limiting circuit, wherein the current limiting circuit includes a third resistor and a fourth resistor; One end of the third resistor is connected to the power input end of the driving circuit, the other end of the third resistor is connected to the control end of the second transistor, and the third resistor is a pull-up resistor; One end of the fourth resistor is connected to the control end of the third transistor, the other end of the fourth resistor is connected to the output end of the third transistor, and the fourth resistor is a pull-down resistor.

10. A motor driving method, characterized in that: include: When it is detected that the driving circuit outputs a driving signal, enhancing the driving signal output by the driving circuit based on the driving enhancement circuit; Based on the driving signal enhanced by the driving enhancement circuit, the motor vibration is controlled.

11. The motor driving method according to claim 10, characterized in that: The driving signal includes a first signal and a second signal, and the driving enhancement circuit includes a power input terminal, a first switch control circuit, a second switch control circuit and a third switch control circuit; Based on the driving enhancement circuit, enhancing the driving signal output by the driving circuit includes: If the driving signal output by the driving circuit is the first signal, controlling the first switch control circuit and the second switch control circuit to be connected to the power input terminal to enhance the first signal; If the driving signal output by the driving circuit is the second signal, the second switch control circuit and the third switch control circuit are controlled to be turned on and turned on by the power input terminal to enhance the second signal.

12. The motor driving method according to claim 10 or 11, characterized in that: The method further comprises: If it is detected that the driving circuit stops outputting the driving signal, the driving enhancement circuit is controlled to stop enhancing the driving signal.

13. The motor driving method according to claim 10, characterized in that: The driving enhancement circuit also includes a protection circuit: In response to a sudden change in the driving signal, the driving signal after the sudden change is maintained unchanged based on the protection circuit.

14. A motor drive device, characterized in that: The device comprises: an enhancement unit, configured to enhance the driving signal output by the driving circuit based on the driving enhancement circuit when it is detected that the driving circuit outputs the driving signal; The control unit is used to control the vibration of the motor based on the driving signal enhanced by the driving enhancement circuit.

15. A motor drive device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the motor driving method described in any one of claims 10-13.

16. A storage medium, characterized in that: The storage medium stores instructions, and when the instructions in the storage medium are executed by a processor of the terminal, the terminal is enabled to execute the method described in any one of claims 10 to 13.

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