TPS51200: PSRR

Steve Widener

Part Number: TPS51200
Other Parts Discussed in Thread: TPS7A47

Do we have any data on the PSRR vs frequency of the TPS51200 when operated in the simplified DDR application (as shown in the datasheet, front page, VLDOin to Vout with a constant REFIN).

over 5 years ago

0 Qian Chen over 5 years ago

TI__Mastermind 24075 points

Hi Steve,

We don't have data on the PSRR Vs frequency.

TPS51200 is a linear regulator, not a switching converter.

Thanks

Qian

0 Steve Widener over 5 years ago in reply to Qian Chen

TI__Genius 11010 points

OK - I'll attempt to measure

I don't understand why you differentiate the TPS51200 as a linear regulator vs. a switcher. Linear regulator do have PSRR specifications - check out the TPS7A47 for instance where we specify 78dB PSRR at 1k for 16V -> 15V / 500mA. Did I miss something that you intended to communicate

0 Qian Chen over 5 years ago in reply to Steve Widener

TI__Mastermind 24075 points

Hi Steve,

You are right.

Can you share PRSS test result in case other customer needs it in the future?

Thanks

Qian

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TPS51200: PSRR