The DRV8846 provides a highly-integrated stepper motor driver for cameras, printers, projectors, and other automated equipment applications. The device has two H-bridges and a microstepping indexer and is intended to drive a bipolar stepper motor. The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8846 is capable of driving up to 1.4-A full-scale output current (with proper heatsinking and TA = 25°C).
A simple STEP/DIR interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that smart tune, slow decay, fast decay, and mixed decay can be used. The PWM current chopping off-time can also be selected. A low-power sleep mode is provided which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.
Internal protection functions are provided for UVLO, overcurrent protection, short circuit protection, and overtemperature. Fault conditions are indicated via a nFAULT pin.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DRV8846 Dual H-Bridge Stepper Motor Driver datasheet (Rev. A) | PDF | HTML | 27 Mar 2017 |
| Application note | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 14 Oct 2021 | |
| Application note | Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) | PDF | HTML | 19 Jan 2021 | |
| White paper | How smart tune regulates current in stepper motors (Rev. A) | 19 Mar 2019 | ||
| Application brief | Smart Tuning for Efficient Stepper Driving | 20 Nov 2018 | ||
| Application brief | Small Motors in Large Appliances | 20 Jul 2018 | ||
| Technical article | Spin your stepper automatically | PDF | HTML | 03 Mar 2016 | |
| More literature | TM4C123x Stepper Motor Control Product Summary | 06 Jul 2015 | ||
| EVM User's guide | DRV8846 Evaluation Module User Guide (Rev. A) | 18 Mar 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
The DRV8846 is a highly integrated stepper motor controller and driver for cameras, printers, projectors, and other automated equipment applications.This device has been optimized to drive a single bipolar stepper with up to 1/32 microstepping with on-chip indexers.
The DRV8846EVM is a platform (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
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