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 24Vdc to suit your motors
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.

Size 113 x 52 x 30mm

Please note that this controller now has built in failsafe for RC operation.