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TPA3128D2: Replace class-AB application using TPA3128

Richard Yang1
Intellectual 1100 points
Part Number: TPA3128D2
Other Parts Discussed in Thread: TPA3138D2, TPA3244, TPA3250

Hi Team:

    Can you help to verify if  TPA3128 can meet the following TPA5117 or TDA5117 output design based on a CLASS-AB application, the output is two speakers, both are connected to GND terminal, thanks!

  • 0 in reply to Richard Yang1
    TI__Mastermind 20830 points

    Hi Richard, 

    This looks like you are wanting to have a class-D amplifier set up to be in single-ended output mode. TPA3138D2 does not natively support this output configuration. 

    While a lot of our devices don't support this natively we do have a few devices that do. I can check to see if we have anything for lower power levels but I'd recommend taking a look at the TPA3244 and TPA3250. Both of these are analog input devices, pad-down (PCB is the heatsink), and can support this Single-ended output configuration for up to 4 speakers. 

    Now there are PWM input devices that also support single-ended output mode configuration but these devices are older and would require an additional modulator that would require I2S and I2C communication. Since you are looking at an analog input, I don't think these would be the best fit for you. 

    Hopefully this helps! Let me know if you need further clarification.

    Best Regards,

    Robert Clifton