DRV8886AT
Motor
Connections
Power Connector
Microcontroller
Section
Micro
USB
Header
Board Overview
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2
SLVUB16 – February 2017
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Copyright © 2017, Texas Instruments Incorporated
DRV8886AT Evaluation Module User's Guide
1
Board Overview
shows the top view of the printed circuit board (PCB).
Figure 1. Top View of Typical Board Configuration (EVM Provided May Vary)
WARNING
The DRV8886AT (U1) can operate at temperatures approaching
150ºC. This device should not be touched.
2
Introduction
The DRV8886AT customer EVM is a platform revolving around the DRV8886AT, a medium-voltage dual
H-bridge driver and highly-configurable power stage. This device has been optimized to drive a single
bipolar stepper with up to 16 degrees of internally generated microstepping.
The EVM houses an MSP430™ microcontroller and an USB interface chip. The USB chip allows for serial
communications from a PC computer where a Windows
®
application is used to schedule serial
commands. These commands can be used to control each of the device signals, and drive the stepper
motor by issuing the step commands at the desired rate.
The microcontroller firmware operates using an internal index mode.
This user's guide details the operation of the EVM, as well as the hardware configurability of the
evaluation module.
2.1
Connectors
The DRV8886AT EVM offers access to the VM (motor voltage) power rail through a terminal block (J1). A
set of test clips in parallel with the terminal block allows for the monitoring of the input power rail.
The user must apply the VM voltage according to recommended parameters listed in the data sheet.
