7A DC Motor Driver Module

Dual H-Bridge Motor Driver: Capable of driving two DC motors simultaneously with a single-channel maximum current of 7A. Features a wide voltage range of 6.5V to 27V and optocoupler-isolated input signals. Includes isolation and undervoltage protection, designed in compliance with EMC standards, with static discharge circuits ensuring stability and reliability for industrial applications.

Signal Logic

Note: 0 represents low level, 1 represents high level, x represents any level, and when floating, it is considered high level.

IN1	IN2	ENA1	OUT1, OUT2 Output
0	0	x	Brake
1	1	x	Coast
1	0	PWM	Forward Speed Control
0	1	PWM	Reverse Speed Control
1	0	1	Full-Speed Forward
0	1	1	Full-Speed Reverse

IN3	IN4	ENA2	OUT3, OUT4 Output
0	0	x	Brake
1	1	x	Coast
1	0	PWM	Forward Speed Control
0	1	PWM	Reverse Speed Control
1	0	1	Full-Speed Forward
0	1	1	Full-Speed Reverse

Precautions

Power Connection: Ensure the driver power supply is not connected in reverse. It is recommended to connect a 15A fuse at the power input. The input voltage should be within 6.5V~27V. Overvoltage may damage the driver module upon powering on.
Power Supply Requirements: The power supply’s rated output current should be at least twice the motor’s rated current to prevent voltage drops during motor startup. Insufficient current may cause the power supply voltage to fall below the driver’s input voltage requirements, triggering undervoltage protection and halting the motor.
Motor Interface: Avoid short-circuiting the motor interface, as this may damage the driver module. A 10A fuse is recommended at the motor interface.
Direction Switching: Allow at least 0.1 seconds of braking before reversing the motor’s direction. Do not reverse while the motor is still running, as this may damage the driver.
Power-Off Precautions: When the driver module is powered off, do not allow the motor to rotate at high speed directly or indirectly, as the back electromotive force generated by the motor may damage the driver. If high-speed motor operation during driver power-off is required, it is recommended to connect a relay (NO and COM terminals in series) at the motor interface. The relay coil should share the same power source as the driver. This setup will disconnect the motor from the driver when the power is off.
Environmental Protection: Protect the driver from moisture. Avoid short circuits on the driver’s components, and do not touch component pins or pads on the board with your hands.

Specification

Supply Voltage	6.5V-27V; Power must not be connected in reverse or exceed 27V, as it may damage the module. A 15A fuse is recommended at the power input.
Motor Interface	Dual motor outputs with a rated output current of 7A per channel and a peak current of 50A. Short circuits at the motor interface should be avoided. A 10A fuse is recommended in series.
Control Signal Voltage	3-6.5V for enable signal and forward/reverse control signal.
Enable Signal (ENA)	Supports PWM input for speed adjustment. PWM frequency range: 0-10kHz. Minimum PWM pulse width: 10µs.
Operating Temperature	-25°C to +80°C
Product Dimensions	55mm × 55mm × 16mm
Mounting Hole Diameter	3mm; Ensure the back of the circuit is insulated during installation (use insulating pads or elevate the circuit board with copper posts).
Motor Parameters	For 24V motors: Suitable for motors with rated power ≤115W or rated current ≤7A for continuous operation.
Motor Parameters	For 12V motors: Suitable for motors with rated power ≤40W or rated current ≤7A for continuous operation.

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