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DRV8711EVM: Motor current

Ralf Koester
Expert 1400 points
Part Number: DRV8711EVM
Other Parts Discussed in Thread: MSP-FET, MSP430F2617, MSP-EXP430F5529LP, DRV8704, DRV8711, BOOST-DRV8711

Hallo,

we plan to make stepper tests with the DRV8711EVM board.

Is it possible to change the program and flash it?

What is the biggest motor current which is possible? (I did noit find in documentation)

Is it possible to work with CCS (v6.2.0), develop, debug, load program?

br

Ralf

  • 0
    TI__Guru** 114905 points
    Hi Ralf,

    Is it possible to change the program and flash it?

    >> Yes the program can be changed and reflashed. You will need a MSP-FET to program the board.
    An alternative is to use a MSP-EXP430F5529LP (the code on the EVM is for a MSP430F2617 but can be modified if desired). The jumpers on the EVM can be removed and the launchpad can be connected.

    What is the biggest motor current which is possible? (I did noit find in documentation)

    >> You can operate up to 10A RMS stepper motors. If you are operating brushed motors, please consider the DRV8704. The DRV8704 was designed for better thermal performance when using brushed motors.

    Is it possible to work with CCS (v6.2.0), develop, debug, load program?

    >> Yes, this is possible.
  • 0 in reply to Rick Duncan
    Expert 1400 points
    How can we connect both boards together?
    The MSP-EXP430F5529LP with the DRV8711EVM......
    Direct, or do we need a cable?
    br
    Ralf
  • 0 in reply to Ralf Koester
    TI__Guru** 114905 points
    Hi Ralf,

    To connect the boards together:
    1) remove the shunts on J6. This will isolate the DRV8711 from the MSPF2617 on the EVM
    2) use a set of male to male jumpers wire to connect the MSP-EXP430F5529LP or desired mcu to the DRV8711 side of jumper J6. This will allow external control of the DRV8711.

    Another option available is the BOOST-DRV8711 which is compatible with the MSP-EXP430G2. The BOOST-DRV8711 is limited to 4.5A, but the MSP-EXP430G2 connects directly.

    A newer version of the MSP-EXP430G2 is available, but I have not confirmed that it also works.