1.11 High and Low Side Motor Drivers

Motor drives that require on/off as well as reverse control often use P-channel, MOSFET switches in the top end of H-bridge configurations. With the HT0440, these P-channel FETs can be replaced by less expensive N-channel switches. This solution is particularly attractive where it is only necessary to have forward/reverse control without any critical speed control. Shown below are 4 N-channel MOSFETS configured with a HT0440 driver to provide a cost-effective solution.