DRV8411 Dual H-Bridge Motor Driver

Texas Instruments' DRV8411 is a dual H-bridge motor driver that can drive one or two DC brush motors, one stepper motor, solenoids, or other inductive loads. The tripler charge pump allows the device to operate down to 1.65 V to accommodate 1.8 V supply rails and low-battery conditions. The charge pump integrates the capacitors and enables 100% duty cycle operation. The inputs and outputs can be paralleled to drive high-current brush DC (BLDC) motors with half the R_DS(ON).

The device implements current regulation by comparing an internal reference voltage to the voltage on the xISEN pins, which is proportional to the motor current through an external sense resistor. 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. The internal protection features include undervoltage lockout (UVLO), overcurrent (OCP), and overtemperature. The DRV8411 comes in pin-to-pin, scalable R_DS(ON) options to support various loads with minimal design changes.