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DRV8701: drv8701

xufeihx
Intellectual 500 points
Part Number: DRV8701
Other Parts Discussed in Thread: DRV8704, DRV8320

Hi

I want to control a 50v/4A DC brush motor use drv8701。Can I use two separate surplys one is 15v for drv8701 and another is 50v DC for motor?

Best Regards,

xufeihx

  • 0
    TI__Guru** 114905 points
    Hi Xufeihx,

    No, this cannot be done. You need approximately 60V to turn on the high side FETs. The charge pump of the DRV8701 provides this voltage.

    You need a 60V gate driver. There are a few options available such as:
    DRV8704
    DRV8320H and DRV8320

    Even with a 60V gate driver, care should be taken to avoid violating the absolute maximum voltages.