TAS3251EVM: How to design PFFB

Markus Krautter

Part Number: TAS3251EVM
Other Parts Discussed in Thread: TAS3251, TPA3251

Tool/software:

Hi,

I have basically the same questions as in: tas3251evm-pffb-follow-up-questions--especially-regarding-the-error-in-the-evm?tisearch=e2e-sitesearch&keymatch=tas3251%20pffb#, where also no concrete answers were given.

Please supply all the necessary formula to calculate a stable PFFB implementation for TAS3251 with various output filter configurations.

Is there a tool to parameterize the components for the PFFB (e.g. in excel)?

Kind regards,
Markus

4 months ago

0 Ramsey Foote 4 months ago

TI__Genius 9175 points

Hi Markus,

For designing a PFFB network with the TPA3251 please refer to this app note. Other configurations have not been tested and validated, so deviation will need to be tested.

Regards,

Ramsey

0 Markus Krautter 4 months ago in reply to Ramsey Foote

Intellectual 450 points

Hi Ramsey,
I know the app note. I was hoping you would have a calculation basis to design the PFFB circuit for this particular amp model.

You are also welcome to send the tool by e-mail, MDNA with our company is also no problem.

Regards,
Markus

0 Sydney Northcutt 4 months ago in reply to Markus Krautter

TI__Genius 14315 points

Hi Markus,

Ramsey is currently out of office for work travel and will be able to get back to you by the end of the week. Thanks for your patience!

Regards,
Sydney Northcutt

0 Ramsey Foote 4 months ago in reply to Sydney Northcutt

TI__Genius 9175 points

Hi Markus,

We do not have any documentation beyond the recommendations in the app note.

Regards,

Ramsey

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TAS3251EVM: How to design PFFB