High-Power Stepper Motor Driver 36v4 Pololu

DESCRIPTION

This discrete MOSFET stepper motor driver enables control of one bipolar stepper motor. It supports a wide 8 V to 50 V operating voltage range and can deliver up to 4 A continuous per phase without a heat sink or forced air flow (6 A max with sufficient additional cooling). The SPI interface allows configuration of the current limiting, step mode (9 step modes from full-step through 1/256-step), decay mode, and stall detection. The driver also provides back-EMF feedback that can be used for more advanced control and stall detection algorithms. Additional features include reverse-voltage, under-voltage, and over-current protection.

The DRV8711 has many configurable settings, see the DRV8711 datasheet for a detailed explanation of its features and how to use them, there is also an Arduino library that simplifies getting started by providing basic functions for configuring and operating the driver. The driver’s power performance is a function of the external dual H-bridges, which allow the driver to deliver continuous currents up to 4 A per phase without any additional cooling such as heat sinks or forced airflow.

FEATURES

• Wide 8 V to 50 V operating voltage range
• High-power: can deliver up to 4 A continuous per phase without extra cooling (6 A max with sufficient additional cooling)
• Highly configurable through SPI interface
• Optional STEP/DIR control pins (stepping can also be controlled through SPI interface alone)
• Nine different step resolutions down to 256 microsteps: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, 1/32-step, 1/64-step, 1/128-step, and 1/256-step
• Adjustable current control lets you set the maximum current output, enabling the use of voltages above your stepper motor’s rated voltage to achieve higher step rates
• Adaptive blanking time, adjustable decay times, and various current decay modes enable the creation of ultra-smooth motion profiles through the SPI interface
• Optional STALL output enables stall detection when microstepping
• Optional BEMF output enables more advanced control and stall detection algorithms based on the back EMF of the stepper motor
• The driver supports an alternate operating mode for controlling two brushed DC motors with PWM inputs instead of one bipolar stepper motor with STEP/DIR inputs
• Inputs compatible with 1.8 V, 3.3 V, and 5 V logic
• Digital outputs are all open drain with pull-ups to externally supplied IOREF voltage for use with non-5V systems (IOREF can be connected to neighbouring 5V OUT pin for use with 5V systems)
• Under-voltage lockout, over-current protection, short circuit protection, and reverse-voltage protection (up to 40 V)
• Arduino library and example sketches are available that provide basic functions for configuring and operating the driver

RESOURCES 

• DRV8711 Stepper Motor Controller IC datasheet
• Schematic diagram of the Pololu High-Power Stepper Motor Driver 36v4 Dimension diagram of the Pololu High-Power Stepper Motor
• Driver 36v4 3D model of the Pololu High-Power Stepper Motor Driver 36v4
• Drill guide for the Pololu High-Power Stepper Motor Driver 36v4
• DRV8711 Quick Spin and Tuning Guide
• DRV8711 Decay Mode Setting Optimization Guide
• Arduino library for the Pololu High-Power Stepper Motor Driver
• This library for Arduino makes it easy to interface with Pololu High-Power Stepper Motor Driver 36v4
• DRV8711 documentation