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DRV632 active low pass filter issue

user4775008
Prodigy 10 points
Other Parts Discussed in Thread: DRV632, TPA3110D2

Hi Team,

I am currently using TI DRV632+ TPA3110D2 for a subwoofer design.  Does not implement the function of the subwoofer, don't know design problem or parameter is wrong, please take a look。design  as follows：

MR024V01.pdf

  • 0
    TI__Guru* 95285 points
    Hi,

    Welcome to e2e.
    I'm sorry I think I don't understand your question very well. Is my understanding correct that you're currently not using TPA3110D2?
    What is the input signal to DRV632? Is there any signal at the output?
    I can see that you're connecting both Left and Right output of DRV632 into TPA3110D2 Right Positive Input through R468 and R488. Is there a specific reason for doing this? Have you tried to remove one of these resistors in order to feed TPA3110D2 from only one channel of DRV632 to see if this works better?

    Best regards,
    -Ivan Salazar
    Texas Instruments