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Original question:

DRV8353RH-EVM: Gate driver not working well

DRV8353RH-EVM: Fault led is ON immediately

Rotem Segev
Prodigy 10 points
Part Number: DRV8353RH-EVM

I bought this development board (DRV8353RH-EVM), attached the ISO board on it, and immediately the red light of the FAULT on the EVM lights up when I wired a 36V DC power supply. There is no motor connected nor USB connected to the ISO board

Is this normal? 

  • 0
    TI__Expert 3535 points

    Hi Rotem,


    Please ensure that the ENABLE pin is pulled high. If ENABLE is low then the device will be in sleep mode. 

    I'm assuming you're not in UV since you said you're using 36V to power VM.

    Let me know if this makes the FAULT LED turn off.

    Thanks,

    Michael