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User's Guide
SLVU976–September 2013
DRV8860 Customer Evaluation Module
This user guide for the DRV8860 customer evaluation module (EVM) supplements the DRV8860 device. It
details the hardware and GUI implementation of the EVM. DRV8860 EVM is a complete solution for
evaluating the DRV8860 8-channel serial-interface low-side driver.
Contents
1 Introduction .................................................................................................................. 1
2 EVM Hardware .............................................................................................................. 2
2.1 PCB Overview ...................................................................................................... 2
2.2 EVM Connections .................................................................................................. 3
2.3 Jumper .............................................................................................................. 6
2.4 Test Points .......................................................................................................... 6
2.5 Schematic ........................................................................................................... 7
2.6 Bill of Materials ..................................................................................................... 9
3 GUI Installation and Operation .......................................................................................... 10
3.1 Install the GUI Software ......................................................................................... 10
3.2 Install the USB Driver ............................................................................................ 10
3.3 GUI Overview ..................................................................................................... 10
3.4 Start-Up Operation ............................................................................................... 13
3.5 KEY and Indicator Function of the EVM ....................................................................... 13
List of Tables
1 Full-Step Sequence ....................................................................................................... 12
2 Half-Step Sequence....................................................................................................... 12
3 Key and Indicator Function .............................................................................................. 13
1 Introduction
The evaluation module includes two DRV8860 devices in a daisy-chain connection and an on-board
MSP430F2350 microcontroller (MCU). A USB-to-UART interface on the board allows communication
between the PC and the EVM. To setup the evaluation functions, connect the device with a USB wire to a
computer USB port, apply 8-V to 38-V VM power to EVM, and install and launch the GUI software. The
following functions are available through the DRV8860 device evaluation:
• Send specific output data from GUI to DRV8860.
• Read back the output states of DRV8860 and display on GUI.
• Read back the fault register of DRV8860 and display on GUI.
• Enable or disable the output of DRV8860 via GUI.
• Send control register including the energizing time and PWM duty to DRV8860.
• Provide an optional VM switch and can be controlled via GUI.
• Run four unipolar stepper motors with direction and micro-stepping (full or half) control.
• Send the same output pattern to up to 255 DRV8860 devices in daisy-chain connection.
After the functions are evaluated on this EVM, the board can separate the two DRV8860 circuits from the
main board. This separation allows customers to apply their own systems for quick prototype verification.
The board has spare connector pins, GPIOs, switches, and LEDs for customized tests or re-development.
1
SLVU976–September 2013 DRV8860 Customer Evaluation Module
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Copyright © 2013, Texas Instruments Incorporated
Verzeichnis
- ・ Blockdiagramm on Seite 7 Seite 8
- ・ Anwendungsbereich on Seite 17 Seite 18
