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DRV10983: Trial issue in DRV10983

Indu Chanana
Prodigy 20 points
Part Number: DRV10983

Hi Everyone!

                           I am using DRV10983 for my BLDC motor . In that i am getting issue if motor is locked then DRV keeps on trying after ever 5 sec, mean after interval of 5 sec a kick/Trial has been given by DRV . I think it seems to be problematic for user. Is there any method to stop its trials after N number of trials for ex after 3 trials can we stop DRV trials and shut off motor till problem exist??

Looking forward for your supportive reply.

Thanks in advance for help!

  • 0
    TI__Intellectual 2600 points
    Indu,

    There is no way to disable the retry. Our device has no way of knowing the locked condition is gone except to try and restart and then encounter the lock again. Therefore the IC retries every 5 seconds.

    Thanks,
    Brian
  • 0 in reply to Brian Schmidt
    Prodigy 20 points
    Oh!!
    but i am getting serious issue due to this.
  • 0 in reply to Indu Chanana
    TI__Mastermind 18900 points
    Hello Indu,

    Note, if you have an MCU in your system that controls the speed command to the driver, there is the possibility of preventing this behavior.

    The MCU can monitor if a fault has occured by continiously sending I2C read commands to the driver. This means, when the driver experiences a fault, the driver will raise a flag that a fault has occured and then try to restart 5 seconds later. If the MCU reads a fault with the 5 second time frame it will have enough time to remove the speed command to the driver which will prevent the restart behavior. This accomplishes your goal.

    Best,
    -Cole