1212-POLOLU MC33926 Motor Driver Carrier

This is a 1212-POLOLU MC33926 Motor Driver Carrier.

This breakout board for Freescale’s MC33926 full H-bridge has an operating range of 5 – 28 V and can deliver almost 3 A continuously (5 A peak) to a DC motor. The MC33926 works with 3 – 5 V logic levels, supports ultrasonic (up to 20 kHz) PWM, and features current feedback, under-voltage protection, over-current protection, and over-temperature protection.

The MC33926 motor driver carrier can supply up to almost 3 A continuous current to a single brushed DC motor at 5 – 28 V, and it can tolerate peak currents up to 5 A for a few seconds, making this a great general-purpose motor driver for medium-sized DC motors. The MC33926 supports ultrasonic (up to 20 kHz) pulse width modulation (PWM) of the motor output voltage, which eliminates the audible switching sounds caused by PWM speed control, and a current feedback circuit outputs an analog voltage on the FB pin that is proportional to the output current. Since this board is a carrier for the Freescale Semiconductor MC33926 H-bridge, we recommend careful reading of the MC33926 datasheet (1MB pdf).

The default states of many of the MC33926 logic input pins requires that many external connections be made to use this motor driver. To reduce the number of necessary external connections, the board has five default-overriding jumpers. All of the default-overriding jumpers are tied to VDD, except the D1 jumper, which is tied to GND. All VDD jumper pads are circles; the ground jumper pad is square.