52-V, bipolar stepper motor gate driver with 1/256 microstepping & stall detect
The DRV8711 device is a stepper motor controller that uses external N-channel MOSFETs todrive a bipolar stepper motor or two brushed DC motors. A microstepping indexer is integrated,which is capable of step modes from full step to 1/256-step.
An ultra-smooth motion profile can be achieved using adaptive blanking time and variouscurrent decay modes, including an auto-mixed decay mode. Motor stall is reported with an optionalback-EMF output.
A simple step/direction or PWM interface allows easy interfacing to controller circuits.A SPI serial interface is used to program the device operation. Output current (torque), step mode,decay mode, and stall detection functions are all programmable through a SPI serialinterface.
Internal shutdown functions are provided for overcurrent protection, short-circuitprotection, undervoltage lockout, and overtemperature. Fault conditions are indicated through aFAULTn pin, and each fault condition is reported through a dedicated bit through SPI.
The DRV8711 is packaged in a PowerPAD™38-pin HTSSOP package with thermal pad (Eco-friendly: RoHS and no Sb/Br).