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
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