Tuesday, April 20, 2010

MD03 - 24Volt 20Amp H Bridge Motor Drive

MD03 - 24Volt 20Amp H Bridge Motor Drive 
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.