Motor drive 200W high power H bridge วงจร Drive Motor 5.9V to 30V 23A

Motor drive is composed of a single H- bridge driver IC plus four external N- channel MOS tube.Support 5.9V to 30V wide voltage input, continuous current can reach 23A , support 100% pulse width modulation. Module through the direction of the DIR pin and speed PWM pin to achieve the motor is positive, reverse and speed control.

   The control terminal supports 1.8V - 5V logic input, and the driver IC integrates the PWM current regulation function, thus limiting the motor surge current. When the SLP pin is set low, the MD04 drive module can enter the low power mode, resulting in a lower quiescent current loss of approximately 9uA .

Working voltage: 5.9 - 30V

Working current: 23A

Logic input: 1.8V , 3.3V , 5V ( max )

PWM frequency: 100kHz

Current detection: 50mV / A  (valid only during forward or reverse rotation)

Reflective voltage protection: none ( VM and GND are not reversed)

Undervoltage protection: Yes

Short circuit protection: Yes

Control truth table

SLP pin default low, the normal use of the SLP pin need to set high, you can directly connected to the logic power of the positive, but also through the microcontroller IO port control.

Note: The table H , L , respectively, said high and low level, the logic drive part of the maximum input voltage shall not exceed 5.5V . 1.8V , 3.3V , 5V system are applicable.

PWM frequency
Motor drive up to 100KHz of the PWM frequency, it is noteworthy that the drive circuit and the switching losses will be proportional PWM frequency. So in general, we recommend using a 10 - 30KHz drive motor.

Current detection and current limiting

Motor driver current detection pin for the CS , the output voltage is proportional to the motor side current. Approximately 50mV / A , plus 50mV about offset, that is, when both ends of the motor current is zero, CS voltage pin is approximately 50mV ; when the CS terminal current reaches 10A when, V CS  = 50mV / A * 10 + 0.05V = 0.55V . It should be noted that the current detection function will not detect the peak current generated by the motor starting and stopping instantaneously, only when the drive is operating in positive / reverse mode.