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DRV8837: Current draw in Coast versus Brake

Ruaridh Mackinnon
Prodigy 30 points
Part Number: DRV8837

Is there any difference in power usage in Coast mode versus Brake Mode(PWM Disabled)?  

Thanks,

  • 0
    TI__Expert 4650 points
    Hi Ruaridh,

    Yes. In coast mode, all four MOSFETs are turned off. This is similar to the No PWM Mode operating supply current. In BRAKE Mode, the two Low-Side MOSFETs are turned on, so the device is using power to keep these MOSFETs on during the off time.