• 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

• Office Automation Machines
• Factory Automation
• Textile Machines
• Robotics

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).