MD03 Motor Controller Support

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 7.8KHz.

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. Motor voltage, anything from 5vdc to 50vdc to suit your motors

Control of the module can be any of:

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

Motor Connections

Note: There is no fuse on the PCB. You should provide a 10A fuse in line with the +v battery terminal. Don't Ignore this, High currents can be dangerous!