Texas Instruments DRV8428, User Manual

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1 SLOU536 – June 2020
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Copyright © 2020, Texas Instruments Incorporated
DRV8428EVM GUI User's Guide
User's Guide
SLOU536 – June 2020
DRV8428EVM GUI User's Guide
This document is provided with the DRV8428 evaluation module (EVM) as a supplement to DRV8428
Stepper Motor Driver datasheet. This user's guide details on how to use the DRV8428 EVM GUI
application.
Contents
1 Overview
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2 Hardware and Software Setup
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3 GUI Application
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List of Figures
1 DRV8428 EVM GUI (Landing Page)
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2 DRV8428 EVM GUI (Home Page)
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3 DRV8428 EVM GUI (Device Connection Pane)
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4 Serial Port Configuration
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5 DRV8428 EVM GUI (Stepper Motor Control Page)
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6 Controls Available for Speed Mode
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7 Controls Available for Step Mode
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8 Stop Conditions
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9 DRV8428 EVM GUI (Decay Mode and TOFF setting)
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10 DRV8428 EVM GUI (Menu Bar – Help Option)
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List of Tables
Trademarks
1 Overview
The DRV8428 EVM is a platform to support prototyping and evaluation for the DRV8428, a medium-
voltage dual H-bridge driver for stepper driving applications. The DRV8428 drives a single bipolar stepper
with microstep settings ranging from full-stepping to 1/256 resolution with internally-regulated microstep
levels. It provides a variety of programmable decay settings.
The EVM uses an MSP430™ microcontroller and a USB interface chip to manage communication from
the GUI software application installed on a PC computer with Windows®. The GUI sends serial
commands to the MSP430 to control the device signals, monitor faults, read and write SPI registers, and
drive a stepper motor by issuing the step commands at the desired rate. This document describes the
software and tools used to evaluate DRV8428 device for stepper motor driving on the DRV8428 EVM.
2 Hardware and Software Setup
The hardware (HW) and software (SW) tools that follow are required for the evaluation of DRV8428:
• DRV8428 EVM
• Stepper motor
• Voltage supply from 4.2 to 33 V
This document only describes the installation and usage of the DRV8428 EVM GUI. For additional details
on hardware connections refer to the
DRV8428xEVM User's Guide .