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DRV110: Creating a refresh impulse in order to recreate the peak current

Thomas Wetzel4
Prodigy 165 points
Part Number: DRV110

Hello TI-DRV11-Ream,

I already posted a question today regarding the Input voltage of the DRV110-8-pin-version. Now I've got another question regarding a refresh Impulse. My aim is to treat the DRV110 in a way that it can retrigger the Peak Current pulse. There is no specific pin for that, but my idea was to pull the EN-pin to ground for a millisecond or so. And then wait for a second for example.

Is it safe for the IC to do that? Is there any other Option of getting the Peak current pulse again?

Thanks and cheers,

Thomas

  • 0
    TI__Expert 6330 points
    Hi Thomas,

    Allow me to contact the engineer assigned to this product. You should expect a response by Monday February 12th.

    Regards,

    Aaron
  • 0
    TI__Expert 4000 points
    Hi Thomas,

    Happy to help with this.

    I think you nailed it on the head. ENs purpose is to retrigger the Peak Current.

    EN is internally pulled high. When connected to GND, EN goes low and and DRV110 current drops to 0 (ceases operation). When EN is disconnected from ground it gets pulled high internally and the DRV110 restarts operation and ramps the solenoid/relay current to Ipeak for time Tkeep, etc.

    Regards,
    Kevin