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24V 20A H Bridge Motor Drive - MD03

24V 20A H Bridge Motor Drive - MD03
24V 20A H Bridge Motor Drive - MD03

The MD03 is a medium power motor driver, designed to supply power beyond that of any of the low power single chip H-Bridges that exist. Main features are ease of use and flexibility. The motor's power is controlled by Pulse Width Modulation (PWM) of the H-Bridge at a frequency of 15khz ( 7.5khz before version 12). 

The 15v MOSFET drive voltage is generated onboard with a charge pump, so the module requires only two supply voltages;
1.    A standard 5V supply for the control logic, only 50mA maximum is required.
2.    The H-Bridge has a rating of 60v allowing Motor voltages up to 24vdc.

Control of the module can be any of;
    a.    I2C bus, up to 8 MD03 modules, switch selectable addresses.
    b.    0v-2.5-5v analog input. 0v full reverse, 2.5v center stop, 5v full forward.
    c.    0v-5v analog input with separate direction control
    d.    RC mode. Controlled directly from the RC receiver output.
    e.    PWM. A simple onboard filter means you can use a 0%-100% 20khz or greater instead of analog.


  • Voltage - 5v logic supply and 5v - 24v for the motor
  • Current - 50mA Max for logic and up to 20A for the motor
  • Control 1 - 0v - 2.5v - 5v Analogue for Reverse - Stop - Forward
  • Control 2 - 0v - 5v (or PWM equiv.) with separate direction control
  • Control 3 - RC Mode - Controlled by standard Radio Control system. Direct connection to RC receiver. (1mS - 2mS pulse with 1.5mS center off).
  • Control 4 - I2C Interface, full control, acceleration and status reporting. Up to 8 modules on bus. SCL speed up to 1MHz
  • Current limiter - Preset at 20A
  • Temperature limiter - Reduces power gracefully if module overheats
  • Size - 113mm x 52mm x 30mm
  • Availability: 3
  • Brand: Devantech
  • Reward Points: 72
  • Product Code: DEVAN-MD03
  • Weight: 999.00g
Ex Tax: £68.92
Reward Points: 800
Tags: hbridge , i2c , pwm , motor-driver