Circuit with motor driver spike suppression

摘要

A suppression circuit may be added to a motor driver circuit, which suppresses offset voltage and ringing in the output signal. The suppression circuit may include an RC circuit filter connected to a pin of a microchip providing a gating reference signal and a junction between high and low side MOSFETS connected to the microchip.

主权项

1. A motor driver circuit with motor driver spike suppression, comprising:
a microchip including a high side gate driver output, a low side gate driver output, and a high side source driver input; a high side MOSFET, wherein the high side gate driver output of the microchip is connected to a gate of the high side MOSFET; a low side MOSFET, wherein the low side gate driver output of the microchip is connected to a gate of the low side MOSFET; and a resistor-capacitor (RC) filter circuit including a driver signal input terminal and a driver signal output terminal, the driver signal input terminal connected to the high side source driver input of the microchip and the driver signal output terminal connected to a junction of source of the high side MOSFET and drain of the low side MOSFET.