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DRV8886: Regulation Current Accuracy & applying logic signal before VM implying

Intellectual 1480 points

Replies: 2

Views: 37

Part Number: DRV8886

Hello team!

I got 2 questions from the customer. Would you mind supporting those, please?

1: For regulation current accuracy, what's tolerant on TRQ value? Is this exactly 50 or 75 or 100%?

I'm assuming that the RREF & ARREF values are more dominant for the accuracy but just want to confirm the TRQ% affect it or not.

2: It is allowed to input signals in the logic pin before implying 24V in VM, correct?

Aside from the DECAY pin, there's an internal pull-down register for all logic pin so I think this should be fine.

Thank you for your support.

Best Regards,

Kazuki Kitajima

  • Kitajima-san,

    1. You can treat  50 or 75 or 100% TRQ value is an exactly number without error.

    2. "It is allowed to input signals in the logic pin before implying 24V in VM" The IC would be safe if the input signal voltage is below the maximum voltage rating spec.

    Best Regards,

    Wang Li

    Motor Drive Solutions

  • In reply to Wang5577:

    Wang-san,

    Thanks!

    I understood.

    Best Regards,

    Kazuki Kitajima

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