TI DRV8711DCPR

The DRV8711 is a stepper motor controller that uses external N-channel MOSFETs to drive a bipolar stepper motor or two brushed DC motors. It integrates a microstepping indexer and can support stepping modes from full-step to 1/256-step. By using adaptive blanking time and various different current decay modes, including the automatic mixed decay mode, a very smooth motion system configuration can be achieved. The motor stall is reported by an optional back electromotive force (EMF) output. A simple step/direction or pulse-width modulation (PWM) interface can be easily connected to the controller circuit. An SPI serial interface is used to set the device operation. The output current (torque), stepping mode, decay mode, and stall detection function can all be programmed through the SPI serial interface. The internal shutdown function supports overcurrent protection, short-circuit protection, undervoltage lockout, and over-temperature protection. A FAULTn pin is used to indicate fault conditions, and each fault condition is reported by a dedicated bit through the SPI. The DRV8711 is available in a 38-pin heat-enhanced thin shrink small-outline package (HTSSOP) with a thermal pad (Environmentally friendly: RoHS compliant and lead/bromine free).

• PWM microstepping motor driver
• Integrated 1/256-step microstepping indexer
• Drives external N-channel MOSFETs
• Optional STEP/DIR pins
• Optional PWM control interface for DC motor control
• Overcurrent protection (OCP)
• Overtemperature shutdown (OTS)
• Undervoltage lockout (UVLO)
• Individual fault condition indicator bits
• Flexible decay modes including automatic mixed decay
• Stall detection with optional back-EMF (BEMF) output
• Highly configurable SPI serial interface
• Internal reference and torque DAC
• 8V to 52V operating supply voltage range
• Scalable output current
• Thermally enhanced SMT package
• 5V regulator capable of handling 10mA load

• Office automation equipment
• Factory automation
• Textile machinery
• Robotics