DRV8711 Texas instruments

DRV8711

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DRV8711

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Описание

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

Number of full bridges	2
Vs (min) (V)	8
Vs ABS (max) (V)	60
Sleep current (µA)	65
Control mode	PWM, STEP/DIR
Control interface	Hardware (GPIO), SPI
Microstepping levels	256
Features	Stall Detection, Voltage Regulator
Rating	Catalog
Operating temperature range (°C)	-40 to 85