DRV8231/A 33 V H-Bridge Motor Drivers

Texas Instruments' DRV8231 and DRV8231A are integrated motor drivers with an N-channel H-bridge, charge pump, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half-bridges and 100% duty-cycle driving. The DRV8231/A implements a current regulation feature by comparing the analog input VREF and the voltage across a current-sense shunt resistor on the ISEN pin. The ability to limit current can significantly reduce large currents during motor startup and stall conditions.

A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout (UVLO), output overcurrent protection (OCP), and device overtemperature shutdown (TSD). The DRV8231 comes in pin-to-pin, scalable R_DS(ON), and supply voltage options to support various loads and supply rails with minimal design changes.