TPA3128D2: TPA3128D2 PWM clock frequency performance changes.

Mark Allie64173

Part Number: TPA3128D2

I am interested in the performance of the TPA3128/9 versus the different PWM clock frequencies. I realize that switching losses go up as the clock frequency goes up. Does anyone know of any other performance changes that occur when the PWM frequency changes. I'm particularly interested in the higher frequency choices. Thanks.

Mark Allie

over 4 years ago

0 Yanming Gong over 4 years ago

TI__Mastermind 19410 points

Hi Mark,

Changing the PWM frequency does not have influence to audio performance. Switching frequency is option to avoid AM interference on EMI.

Regards,

Derek

0 Mark Allie64173 over 4 years ago in reply to Yanming Gong

Prodigy 80 points

Yes it is quite clear that the adjustable clock frequency is to avoid certain spectral regions. I am glad to hear that it doesn't affect audio performance. Where did you learn that? What I am asking is does it affect efficiency like most clock changes in PWM amps. If so how much?

Thanks

Mark

0 Yanming Gong over 4 years ago in reply to Mark Allie64173

TI__Mastermind 19410 points

Hi Mark,

It does not affect audio performance and also does not affect the power efficiency.

Regards,

Derek

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TPA3128D2: TPA3128D2 PWM clock frequency performance changes.