12/24V 7A 160W dual-channel DC motor drive module motor drive board H bridge L298 logic
Features
◆ Very small size, only 5.5cm×5.5cm
◆ Support voltage 7V～24V, undervoltage protection, power supply transient interference suppression
◆ Dual motor interface, rated output current 7A each
◆ Similar to L298 control logic, each channel supports three-wire control enable, forward and reverse rotation and braking
◆ The enable signal can be externally connected to PWM, and the positive and negative control signals can be connected in series with limit switches
◆ The control signal uses the sink current drive mode, which supports the direct drive of most microcontrollers
◆ Use optocoupler to isolate all control signals
◆ With electrostatic discharge circuit
◆ Support voltage 7V～24V, undervoltage protection, power supply transient interference suppression
◆ Dual motor interface, rated output current 7A each
◆ Similar to L298 control logic, each channel supports three-wire control enable, forward and reverse rotation and braking
◆ The enable signal can be externally connected to PWM, and the positive and negative control signals can be connected in series with limit switches
◆ The control signal uses the sink current drive mode, which supports the direct drive of most microcontrollers
◆ Use optocoupler to isolate all control signals
◆ With electrostatic discharge circuit
Principle overview
This H-bridge module uses a gate circuit and a combination of MOS transistors to realize motor forward and reverse, braking and speed regulation control. It has both larger output current and flexible control signal logic similar to L298.
Interference processing method: control signal optocoupler isolation, power supply spike voltage suppression.
Control signal logic: Use gate circuit to realize control logic similar to L298.
H bridge realization method: Use P, N complementary MOS tube to realize H bridge.
Power supply under-voltage protection: Use reset chip to achieve under-voltage protection.
Control signal logic: Use gate circuit to realize control logic similar to L298.
H bridge realization method: Use P, N complementary MOS tube to realize H bridge.
Power supply under-voltage protection: Use reset chip to achieve under-voltage protection.
Suitable motor parameters
A motor with a rated voltage of 24V is suitable for marking a rated power of 115W or less or a motor with a rated current of 7A or less for a long time at full capacity
A motor with a rated voltage of 12V is suitable for marking a rated power of 40W or less or a motor with a rated current of 7A or less for a long time at full capacity
(The drive can output a rated current of 7A for a long time, but the rated power marked on the motor generally refers to the output power, considering the work loss of the motor, so the motor efficiency should be considered when calculating the rated current, rated current = rated power/rated voltage/efficiency)
A motor with a rated voltage of 12V is suitable for marking a rated power of 40W or less or a motor with a rated current of 7A or less for a long time at full capacity
(The drive can output a rated current of 7A for a long time, but the rated power marked on the motor generally refers to the output power, considering the work loss of the motor, so the motor efficiency should be considered when calculating the rated current, rated current = rated power/rated voltage/efficiency)
Description
This is an entry-level product for tanks, robots, laboratories, and DIY enthusiasts. It is promoted at a cost price; it will not be returned or repaired if it does not refer to the "User Manual". Please read the user manual carefully.
The bare-board motor driver (module) without a shell is a special offer, no bargaining. Please refer to the product manual carefully.
The bare-board motor driver (module) without a shell is a special offer, no bargaining. Please refer to the product manual carefully.
The power supply of the single-chip microcomputer and the control signal power supply of the drive board should share the same ground, but not the same ground with the motor power PGND. When using a 5V single-chip microcomputer, the driver board +5V is connected to the power supply +5V; when using a 3.3V single-chip microcomputer, the driver board +5V is connected to the power supply 3.3V. The control signals of the single-chip microcomputer and the drive board can share a power supply or independently supply power (but must share the ground). ENA is connected to a GPIO or PWM output port of the single-chip microcomputer. When ENA is high, the drive board is enabled, forward and reverse or brake is effective. If it is a PWM signal, the motor can be adjusted; when it is low, the drive The board is disabled, and the motor interface has no output. IN1 and IN2 are connected to the two GPIOs of the single-chip microcomputer (supporting any IO port of the 51 single-chip microcomputer without a pull-up resistor) to control the forward and reverse rotation and braking of the motor. The driver logic is shown in the logic table.
Among them, PB1 and PB2 are two buttons. When PB2 is pressed but PB1 is not pressed, IN1 is high, IN2 is low, and the motor rotates forward; when PB1 is pressed but PB2 is not pressed, IN1 is low and IN2 is high, The motor reverses; when PB1 and PB2 are both pressed down or both pop up, IN2 and IN2 are both low or high, and the motor brakes (or brake). See logic table for control signal logic.
The size is 5.5cm×5.5cm×2.0cm. The installation hole diameter is 3mm, and it is recommended to use M3 screws for fixing. Be careful not to short-circuit the back circuit during installation. You can add insulating pads or use copper posts to raise the circuit board.
Precautions
1) The drive power supply must not be reversed. It is recommended to connect a 15A fuse in series with the power interface, and the voltage should be between 6.5V and 27V. If the voltage is overvoltage, the drive module may be burnt when power on.
2) It is recommended that the rated output current of the power supply is more than 2 times the rated current of the motor, so as not to cause the power supply to not provide the required current when the motor is started, and cause the power supply voltage to drop, and the power supply voltage cannot reach the input voltage required by the driver, so that the drive module performs undervoltage protection shutdown. The output interruption causes the motor to stop.
3) The motor interface must not be short-circuited, otherwise the drive module may be burned. It is recommended to connect a 10A fuse in series with the motor interface.
5) The drive should be connected to the motor before powering on to prevent accidental short-circuit and burn the drive module.
6) Pay attention to the driver not to get wet, do not short-circuit the components on the driver board, and do not touch the pins and pads of the components on the board with your hands
1) The drive power supply must not be reversed. It is recommended to connect a 15A fuse in series with the power interface, and the voltage should be between 6.5V and 27V. If the voltage is overvoltage, the drive module may be burnt when power on.
2) It is recommended that the rated output current of the power supply is more than 2 times the rated current of the motor, so as not to cause the power supply to not provide the required current when the motor is started, and cause the power supply voltage to drop, and the power supply voltage cannot reach the input voltage required by the driver, so that the drive module performs undervoltage protection shutdown. The output interruption causes the motor to stop.
3) The motor interface must not be short-circuited, otherwise the drive module may be burned. It is recommended to connect a 10A fuse in series with the motor interface.
5) The drive should be connected to the motor before powering on to prevent accidental short-circuit and burn the drive module.
6) Pay attention to the driver not to get wet, do not short-circuit the components on the driver board, and do not touch the pins and pads of the components on the board with your hands
packing: 1pc
warranty period: 120 days
