Full-bridge MOS motor driver based on HIP4082 gate driver chip

Abstract

The utility model relates to the technical field of direct-current brush motor drive, in particular to a full-bridge MOS motor drive based on an HIP4082 gate drive chip, which comprises a power input interface and a signal input interface, the output end of the power input interface is electrically connected with a voltage reduction and stabilization chip and an MOS tube respectively, and the output end of the signal input interface is electrically connected with a voltage reduction and stabilization chip. The output end of the step-down voltage-stabilizing chip is electrically connected with a power indicating lamp, a step-up voltage-stabilizing chip and an enabling switch. The voltage boosting and stabilizing chip boosts the voltage output by the voltage reducing and stabilizing chip to 12V and provides the voltage to the HIP4082 driving chip, a control signal is input to the HIP4082 driving chip through the signal buffer chip, and the HIP4082 driving chip controls the on-off of the MOS tube, so that the positive and negative rotation and the speed of the motor are controlled, the existence of a certain PWM signal is controlled, the rotation direction of the motor is controlled, and the motor is driven to rotate. And the duty ratio of the PWM signal is controlled, so that the rotating speed of the motor is controlled, and the motor has the advantages of strong driving capability, support of lower working voltage and more convenience in control.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current brushed motor driving, in particular to a full-bridge MOS motor driving based on a HIP4082 gate driving chip. Background Art

[0002] A brushed DC motor is a rotating motor that contains a brush device that converts DC power into mechanical energy or mechanical energy into DC power. In the field of brushed DC motor drive technology, using N-channel MOS tubes to form a full-bridge drive circuit is a common drive method. In order to achieve forward and reverse rotation and speed control of brushed DC motors, a motor drive circuit with excellent performance and compact size is essential.

[0003] The motor drive circuit is divided into two types in principle: full-bridge and half-bridge. The full-bridge drive circuit can be realized by triodes or MOS tubes. The driving ability of triodes is weak, and the full-bridge MOS can be realized by all N-channel MOS tubes, or a combination of N+P-channel MOS tubes. Since the internal resistance of P-channel MOS tubes is large, they cannot be used in high-performance motor drive occasions. Therefore, this design adopts all N-channel MOS tubes. Due to the characteristics of N-channel MOS tubes, dedicated gate drive chips are required. The HIP4082 drive chip is matched with a boost circuit to drive N-channel MOS tubes at a lower voltage. The traditional DC brushed motor drive circuit has the following disadvantages: 1. The drive circuit composed of integrated brushed motor drive chips has weak output capability. 2. The drive circuit constructed by N+P-channel MOS tubes has many discrete devices and a large volume. 3. A higher operating voltage is required. In order to solve the above technical problems, we designed a full-bridge MOS motor drive based on the HIP4082 gate drive chip. Utility Model Content

[0004] The purpose of the utility model is to provide a full-bridge MOS motor driver based on the HIP4082 gate drive chip, which has the advantages of strong driving capability, supporting lower operating voltage, and more convenient control, and solves the problems of weak output capability, large installation volume, and higher voltage requirement.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a full-bridge MOS motor driver based on a HIP4082 gate drive chip, comprising a power input interface and a signal input interface, the output end of the power input interface is electrically connected to a buck voltage regulator chip and a MOS tube, respectively, the output end of the buck voltage regulator chip is electrically connected to a power indicator light, a boost voltage regulator chip and an enable switch, the output end of the boost voltage regulator chip is electrically connected to a HIP4082 drive chip, the output end of the signal input interface is electrically connected to a signal buffer chip, and the output end of the MOS tube is electrically connected to a motor interface.

[0006] Preferably, the output end of the HIP4082 driver chip is electrically connected to the MOS tube, and the output end of the signal buffer chip is electrically connected to the HIP4082 driver chip.

[0007] Preferably, the output end of the enabling switch is electrically connected to the HIP4082 driving chip, and the enabling switch is a toggle switch.

[0008] Preferably, the HIP4082 driver chip is a full-bridge gate driver chip, and the output end of the enable switch is electrically connected to an enable indicator light.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The boost regulator chip boosts the voltage output by the buck regulator chip to 12V and provides it to the HIP4082 driver chip. The control signal is input to the HIP4082 driver chip through the signal buffer chip. The HIP4082 driver chip controls the switch of the MOS tube, thereby controlling the forward and reverse rotation and speed of the motor, controlling the presence or absence of a certain PWM signal, and controlling the rotation direction of the motor. The duty cycle of the PWM signal is controlled to control the rotation speed of the motor. This has the advantages of strong driving capability, support for lower operating voltage, and more convenient control. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a system schematic diagram of the utility model.

[0012] In the figure: 1. Power input interface; 2. Signal input interface; 3. Enable switch; 4. Power indicator light; 5. Enable indicator light; 6. Motor interface; 7. Buck regulator chip; 8. HIP4082 driver chip; 9. Signal buffer chip; 10. MOS tube; 11. Boost regulator chip. DETAILED DESCRIPTION

[0013] See also Figure 1 , a full-bridge MOS motor driver based on a HIP4082 gate drive chip, comprising a power input interface 1 and a signal input interface 2, the output end of the power input interface 1 is electrically connected to a buck regulator chip 7 and a MOS tube 10, the output end of the buck regulator chip 7 is electrically connected to a power indicator light 4, a boost regulator chip 11 and an enable switch 3, the output end of the boost regulator chip 11 is electrically connected to a HIP4082 drive chip 8, the output end of the signal input interface 2 is electrically connected to a signal buffer chip 9, the output end of the MOS tube 10 is electrically connected to a motor interface 6, the power input interface 1 and the motor interface 6 are 2P wiring terminals, the buck regulator chip 7 is SPX1117M3-5.0, the output voltage is 5V, and the boost regulator chip 11 is SX1308;

[0014] See also Figure 1 , the output end of the HIP4082 driver chip 8 is electrically connected to the MOS tube 10, the output end of the signal buffer chip 9 is electrically connected to the HIP4082 driver chip 8, and the signal buffer chip 9 is SN74HC125PWR;

[0015] See also Figure 1 The output end of the enabling switch 3 is electrically connected to the HIP4082 driving chip 8. The enabling switch 3 is a toggle switch. By setting the enabling switch 3, the circuit can be manually opened and closed, and the operation is more convenient;

[0016] See also Figure 1 The HIP4082 driver chip 8 is a full-bridge gate driver chip with a bootstrap boost function and strong driving capability. The output end of the enable switch 3 is electrically connected to an enable indicator light 5. By setting the enable indicator light 5, a prompt function is provided. Personnel can understand the power-on and power-off status of the circuit by observing whether the enable indicator light 5 is on.

[0017] When in use, when the full-bridge brushed motor drive circuit of the HIP4082 gate drive chip is working, a 4V-12V DC voltage is input from the power input interface 1, which is converted into a 5V DC voltage by the buck regulator chip 7 and provided to the power indicator light 4. The boost regulator chip 11 boosts the voltage output by the buck regulator chip 7 to 12V and provides it to the HIP4082 drive chip 8. The control signal is input from the signal input interface 2, and is input to the HIP4082 drive chip 8 through the signal buffer chip 9. The HIP4082 drive chip 8 controls the switch of the MOS tube 10, thereby controlling the forward and reverse rotation and speed of the motor. The control signal is composed of two PWM signals. The rotation direction of the motor is controlled by controlling the presence or absence of a certain PWM signal, and the rotation speed of the motor is controlled by controlling the duty cycle of the PWM signal.

[0018] In summary: the full-bridge MOS motor driver based on the HIP4082 gate drive chip solves the problems of weak output capacity, large installation volume and higher voltage requirement through the coordinated use of power input interface 1, signal input interface 2, enable switch 3, motor interface 6, buck regulator chip 7, HIP4082 drive chip 8, signal buffer chip 9, MOS tube 10 and boost regulator chip 11.

Claims

1. A full-bridge MOS motor driver based on a HIP4082 gate driver chip, comprising a power input interface (1) and a signal input interface (2), characterized in that: The output end of the power input interface (1) is electrically connected to a buck voltage regulator chip (7) and a MOS tube (10), respectively; the output end of the buck voltage regulator chip (7) is electrically connected to a power indicator light (4), a boost voltage regulator chip (11) and an enable switch (3), respectively; the output end of the boost voltage regulator chip (11) is electrically connected to a HIP4082 driver chip (8); the output end of the signal input interface (2) is electrically connected to a signal buffer chip (9), and the output end of the MOS tube (10) is electrically connected to a motor interface (6).

2. A full-bridge MOS motor driver based on the HIP4082 gate driver chip according to claim 1, characterized in that: The output end of the HIP4082 driver chip (8) is electrically connected to the MOS tube (10), and the output end of the signal buffer chip (9) is electrically connected to the HIP4082 driver chip (8).

3. A full-bridge MOS motor driver based on the HIP4082 gate driver chip according to claim 1, characterized in that: The output end of the enabling switch (3) is electrically connected to the HIP4082 driving chip (8), and the enabling switch (3) is a toggle switch.

4. The full-bridge MOS motor driver based on the HIP4082 gate driver chip according to claim 1, characterized in that: The HIP4082 drive chip (8) is a full-bridge gate drive chip, and the output end of the enable switch (3) is electrically connected to an enable indicator light (5).

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