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problem in DRV 10983 working

Hartaj Singh
Prodigy 50 points
Other Parts Discussed in Thread: DRV10983

Sir,

I have a drv 10983 and riving a motor using msp430 launchpad. I m able to do i2c communication properly, and i m driving the motor with both i2c and pwm.

Then i put msp430g and drv10983 on single circuit and trying to run the motor.

the problem im facing is first whenever i power the circuit the controller sometimes dont respond(as if it hangs or dont start).

Secondly sometimes the if everything is going properly when i start the motor i doesnt run but after a mechanical rotation given by hand it start rotating , could you pls help me out in this.

Thanks :> :> :>

 

  • 0
    TI__Guru** 114905 points
    Hi Hartaj,

    Our experts have been notified and should reply soon.
  • 0 in reply to Rick Duncan
    TI__Expert 3010 points
    Hi Hartaj,

    How are you powering DRV10983 and MCU ? Can you check if MSP430 is getting input voltage when power is turned ON.

    Can you share waveform of phase current when motor is not starting, try increasing Open Loop Current and Align time in Startup setting

    Regards,
    Krushal
  • 0 in reply to Krushal
    Prodigy 50 points

    I m powering DRV using a DC supply and MSP by buck regulator of DRV, MSP is getting proper voltage,

    Secondly why to change open loop current  or align time as the same settings are working using evm board of drv 10983.

  • 0 in reply to Hartaj Singh
    TI__Expert 3010 points

    Hi Hartaj,

    Thanks for providing feedback.

    Can you please explain problem in little more detail here : What do yo mean when you say 'controller sometimes dont respond(as if it hangs or dont start).'

    Is DRV10983 trying to drive motor when it is stuck or it is not able to drive, scope capture will be useful here ?

    Lets isolate problem first : Can you run DRV10983 independently using GUI and not controller.   

    Regards,

    Krushal