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TPA3100D2: TPA3100D2 Tcase temp over 110 deg

Part Number: TPA3100D2
Other Parts Discussed in Thread: TPA3110D2


our client test thermal to do an experiment as below chart, use heat guns control 110°C, and we measurment  Tcase =110°C

also TPA3110D2 operating 20w and we  find SPK +- output voltage difference= 2.3V

about experiment have make sense?

If any suggestion, Please advise me.


Best regards,




  • Hello customer,

    You use heat gun to control the top case to 110 degrees, on this condition, TPA3110D2 is set to operate to be 20w, but  you find SPK +- output voltage difference= 2.3V. So output power is reduces, right?

    When you take the heat gun away, do you find the output power recover to 20W? I would suggest to:

    1. Check whether output power recovers when heat gun is taken away?
    2. To figure out whether any fault occurs by monitoring fault pin.
    3. To reproduce this issue in TI EVM board.

    By the way, would you share your schematic of TPA3110D2 with us for debugging.


    Alix Wan.