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Audio Amplifier

Tomas Kucera
Prodigy 200 points
Other Parts Discussed in Thread: TPA3116D2-Q1, TPA3116D2

Hello, we use audio amplifier TDA8560Q. Do you have simmillar class-D audio amplifier with low EMI? I have 11-14.4V power supply and 4 Ohm reproductor impedance (stereo BTL configuration), analog imputs. Thank Tomas.

  • 0
    TI__Expert 5360 points

    Hi Tomas.

    It seems that the TPA3116D2-Q1 or TPA3116D2 may satisfy your requirement.

    Also, you can choose the amp you need according to your requirement through the link below:

    Speaker amps product selection | TI.com

    BR.

    Wei Qiu.

  • 0 in reply to Wei Qiu
    Prodigy 200 points

    Thanks for your answer.

    In past we have our prototype with TPA3116D2 and we had the problem with EMI radiation, the audio amplifier disturbed the our receiver that operate in frequency band (73-84MHz), we observed decrease receiver distance with the TPA3116D2. This was the reason why we used TDA8566 from NXP (class AB audio amplifier).

    Do you have other audio amplifier with low EMI? 

  • +1 in reply to Tomas Kucera
    TI__Expert 5360 points

    Hi Tomas.

    Class D power amplifiers will have EMC problems due to the presence of high frequency switches. There is no special optimization technology for EMC inside our chip (phase shifting technology is used to reduce EMC when multiple chips are combined), but as long as a reasonable PCB layout and EMC filter design are performed, the EMC of the chip can be well suppressed.
    There may be some problems with your previous design that caused this problem, you can solve this problem by reducing the switching frequency, improving the wiring, and redesigning the EMC filter.

    BR.

    Wei Qiu.