DRV8889-Q1 Hardware User Guide

1. Hardware Required

  • LP-MSPM0L1306 - MSPM0L1306 Launchpad

  • DRV8889-Q1EVM - DRV8889-Q1 automotive stepper driver with 1/256 microstepping and stall detection evaluation module

  • DC Power supply that supports the required voltage and current

  • Stepper Motor

  • 13 jumper wires (to connect LP to EVM)

  • Micro-USB cable

2. Hardware Setup

  1. Connect jumper J9 and J10 in the LP-MSPM0L1306 as shown below.

J9 and J10 header connected to 3V side in LP-MSPM0L1306

Fig. 13 J9 and J10 header connected to 3V side in LP-MSPM0L1306

  1. Connect a jumper between pin 9 and 11 in the J2 header of the DRV8889-Q1EVM board.

J2 header in DRV8889-Q1EVM

Fig. 14 J2 header in DRV8889-Q1EVM

  1. Connect the LP-MSPM0L1306 to the DRV8889-Q1EVM using the jumper wires as shown in the table below. Refer to the schematic connector pinout for the locations of the DRV8889-Q1EVM signals.

Connection

MSPM0L LP

DRV8889-Q1EVM

Jumper Notes

Fault Input

PA5

nFAULT

Current reference output

PA22

VREF

Chip Select

PA15

nSCS

Logic level for SDO

3V3

VSDO

Serial data output

PA16

SDO

Serial data input

PA18

SDI

Serial clock input

PA6

SCLK

Step input

PA12

STEP

Direction input

PA0

DIR

J10 connect to 3V side

Disable output

PA3

DRVOFF

Sleep mode input

PA1

nSLEEP

J9 connect to 3V side

Common Ground

GND

GND

  1. Connect the A phases of the motor to AOUT1, AOUT2 and the B phases to BOUT1 and BOUT2 of the motor connector terminal block on the DRV8889-Q1EVM. If the phases of the motor are color coded, look into the motor datasheet to find the phases.

  2. Set the power supply voltage to desired voltage (less than 45V) and turn the power supply outputs off. Connect the positive and negative of the power supply to VM and PGND/GND of the power connector terminal block to the DRV8889-Q1EVM. Do not turn the power on yet. See the connection below.

Motor wires and Power supply connection in DRV8889-Q1EVM

Fig. 15 Motor wires and Power supply connection in DRV8889-Q1EVM

Note : The motor phase wire colours shown above are for representation it will not be same for every motor, so please refer to motor datasheet to verify the motor phase wires for your motor.

  1. Connect a Micro-USB cable from the LP-MSPM0L1306 to the PC.

  2. Set the power supply to the motor voltage and with current limit of motor current limit( if motor rated current is higher than 1.5A please keep to 1.5A ). Turn on the power supply.

  3. Once all steps are completed you can start to run the motor with the GUI. Please refer to GUI User Guide.