This document is provided with the DRV8428x evaluation module (EVM) as a supplement to the DRV8428x Stepper Motor Driver datasheet. This user's guide details the hardware implementation of the EVM. Details on using the graphical user interface (GUI) software with this EVM can be found in the DRV8428EVM GUI User's Guide, DRV8428EEVM GUI User's Guide and DRV8428PEVM GUI User's Guide.
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WARNING
DRV8428xEVM is rated for power supply voltages between 4.2 VDC and 33VDC max. The components can support peak output currents up to a maximum 1.7A. To minimize risk or personal injury, fire and/or property damage, always maintain component temperatures below the 130°C rating of the printed circuit board material.
Figure 1 shows the top view of the printed circuit board (PCB).
The DRV8428x EVM is a platform to support prototyping and evaluation for the DRV8428x devices, a medium-voltage dual H-bridge driver for stepper driving applications. The DRV8428x drives a single bipolar stepper with microstepping resolutions down to 1/256. 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 motor.
This user's guide details the hardware configurability of the evaluation module.