TPA3121D2: AVCC Filter

toshi-e2e

Other Parts Discussed in Thread: TPA3121D2

Hi all,
My customer plans to design TPA3121D2 by adding AVCC filter.
Could you tell me the current value of AVCC to estimate a derating of R8 (220-ohm)?
It'll be a case of Vcc=10V.

Thanks in advance.
Regards,
Toshi

over 8 years ago

0 Peter Cao over 8 years ago

TI__Expert 5000 points

Hi, Toshi

I suggest customer use the TPA3121's EVM schematic as their reference design.Shown as bellow:

0 toshi-e2e over 8 years ago in reply to Peter Cao

Genius 4735 points

Hi Peter-san,
thanks for your suggestion.
My customer plans to start the design by your suggestion.
If there is a performance problem, they plan to add an AVCC filter.
So, could you tell me the AVCC current when Vcc=10V.

Thanks and regards,
Toshi

0 Peter Cao over 8 years ago in reply to toshi-e2e

TI__Expert 5000 points

Hi, Toshi-san

It should be 7.45mA on AVCC when AVCC=10V.

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TPA3121D2: AVCC Filter