The DRV8711 device is a stepper motor controller that uses external N-channel MOSFETs to drive 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 various current decay modes, including an auto-mixed decay mode. Motor stall is reported with an optional back-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 serial interface.

Internal shutdown functions are provided for overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature. Fault conditions are indicated through a FAULTn 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).

• Pulse width modulation (PWM) microstepping motor driver

• Built-In 1/256-Step microstepping indexer

• Drives external N-Channel MOSFETs

• Optional STEP/DIR pins

• Optional PWM control interface for DC motors

• Flexible decay modes, including automatic mixed decay mode

• Stall detection with optional BEMF output

• Highly configurable SPI serial interface

• Internal reference and torque DAC

• 8-V to 52-V Operating supply voltage range

• Scalable output current

• Thermally enhanced surface-mount package

• 5-V Regulator capable of 10-mA load

• Protection and diagnostic features

• Overcurrent protection (OCP)

• Overtemperature shutdown (OTS)

• Undervoltage lockout (UVLO)

• Individual fault condition indication bits

• Fault condition indication pin