15:
This is a Pololu 15 motor driver, part number 25DX54L MM HP 12V. It is a high power, dual H-bridge motor driver consisting of two bipolar stepper motor driver channels, each capable of driving up to 75A at 12V. The Pololu 15 offers a wide range of motion control capabilities, including current control, microstepping, direction control, mixed decay, and adjustable slew rate. It also features an adjustable output voltage compensation to optimize the motor performance and a number of other features to ensure reliable operation in industrial and robotics applications.