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Pololu High-Power Motor Driver 36v9 is a discrete MOSFET H-bridge designed to drive large DC brushed motors. The H-bridge is made up of one N-channel MOSFET per leg, and most of the board’s performance is determined by these MOSFETs (the rest of the board contains the circuitry to take user inputs and control the MOSFETs). The MOSFETs have an absolute maximum voltage rating of 50 V, and higher voltages can permanently destroy the motor driver. Under normal operating conditions, ripple voltage on the supply line can raise the maximum voltage to more than the average or intended voltage, so a safe maximum voltage is approximately 44 V.
The versatility of Pololu High-Power Motor Driver 36v9 makes it suitable for a large range of currents and voltages: it can deliver up to 9A of continuous current with a board size of only 1.3" by 0.8" and no required heat sink. With the addition of a heat sink, it can drive a motor with up to about 12A of continuous current. The module offers a simple interface that requires as little as two I/O lines while allowing for both sign-magnitude and locked-antiphase operation. Integrated detection of various short-circuit conditions protects against common causes of catastrophic failure; however, please note that Pololu High-Power Motor Driver 36v9 does not include reverse power protection or any over-current or over-temperature protection.
Pololu Web Site: https://www.pololu.com/product/756
