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TAS5421-Q1: Difference of fault register meaning

Yuta Kurimoto
Genius 10795 points
Part Number: TAS5421-Q1


Hello Team,

Could you please tell me the criteria of triggering below register bit?

Q. 0x01 D2 bit. "A load-diagnostics fault has occurred"

Q. 0x02 D4 bit. "In a fault condition"

Q. 0x02 D5 bit. "Performing load diagnostics"

In the customer situation, they see the both 0x02 D1 and 0x02 D5 bit are triggered. 

Thanks,

Yuta Kurimoto

  • 0
    TI__Mastermind 28100 points

    Hello Kurimoto-san,

    When load diagnostics occurs and it detects a fault, the load diagnostics will repeat 5 times when a fault is present (or a large capacitor is present on the output) to verify that the fault is truly present. 

    Based on this, it sounds like the customer has a fault on the output of the device. However it sounds like this isn't a load diagnostics fault. That means it could be a dc detect, overcurrent, overvoltage, undervoltage, or overtemperature fault. 

    Hope this helps. 

    Best Regards,

    Robert Clifton