DRV8841_15 Datasheet, PDF (8/28 Pages) Texas Instruments – Dual H-Bridge Driver IC

DRV8841
SLVSAC0F – MAY 2010 – REVISED DECEMBER 2015
7 Detailed Description
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7.1 Overview
The DRV8841 is an integrated motor driver solution for two brushed DC motors or a bipolar stepper motor. The
device integrates two power NMOS H-bridges, current sense and regulation circuitry, protection devices, and a
digital interface.
A simple PWM interface allows for easy interfacing to an external digital controller and requires minimal
resources. The fault indication pin (nFAULT) provides a flag for when the device has entered a fault state.
The current regulation is highly configurable with three modes of operation. Depending on the applications
requirements the device can be configured for fast, slow, or mixed decay. Two bit current level control allows the
device to switch between four different current levels. A low-power sleep mode is implemented which allows the
system to save power when not driving the motor.
8
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