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TPA3128D2: Fault must be pull high or not

Part Number: TPA3128D2

Hi, Sir,

I ues TPA3128, please help check the fault pin, it must be pull high, or just connect to SD is ok?

  • Hi Ray,
    Usually FAULTZ pin is driven to High voltage through one 100kOhm resistor. Connecting the FAULTZ and SDZ pins allows the FAULTZ pin function to automatically drive the SDZ pin low which clears the short-circuit protection latch. For this usage, only one pull-up resistor can be used for both SDZ and FAULTZ pins. Please refer to our EVM design:
    www.ti.com/.../slou457.pdf

    Best regards,
    Shawn Zheng