1 Features

1• 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

2 Applications

• Office Automation Machines

• Factory Automation

• Textile Machines

• Robotics

3 Description

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).