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TAS6422-Q1: if TAS6422-Q1 output disconnect to speaker, the Amp have alert?

Lawrence He
Expert 2740 points
Other Parts Discussed in Thread: TAS6422-Q1

Hi, Support Team

Q1: if TAS6422-Q1 output disconnect to speaker, the TAS6422-Q1 have alert is trigger from FAULT pin?

Q2: under voltage/over voltage trigger is from FAULT pin?

note: our client verify DC diagnostic can detect speaker is disconnect.

if any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence

  • 0
    TI__Expert 5360 points

    Hi Lawrence.

    Lawrence He said:

    Q1: if TAS6422-Q1 output disconnect to speaker, the TAS6422-Q1 have alert is trigger from FAULT pin?

    Output disconnect to speaker may trigger OL fault, but this fault will not reflect on FAULT pin.

    1. If you disconnect the speaker before running DC DIAG, the OL fault will trigger. You can check the results through read the value of 0x0C.

    2. If you disconnect the speaker after DC DIAG finished, the OL fault will not trigger.

    Lawrence He said:

    Q2: under voltage/over voltage trigger is from FAULT pin?

    Yes, you can take below description mentioned in the datasheet as a reference.

    ...

    BR.

    Wei Qiu.