TPS72718 Power Supply Rejection Ratio

Pawel Holeksa

Other Parts Discussed in Thread: TPS727

Hello,

I wanted to ask about the PSRR information provided in the TPS727 datasheet.

Although the PSRR performance of this part is very well documented in Figures 14 to 16 of the datasheet, there is no information about the peak-to-peak amplitude of the AC component used during this measurements. Could you please provide me with this data.

Thank you.

Best Regards

Pawel Holeksa

over 14 years ago

0 Bill Stokes over 14 years ago

TI__Expert 8890 points

Hello Pawel,

Apparently different design facilities use slightly different signal levels for the PSRR measurements. This particular part, TPS727, was designed in India. I managed to ask one of the LDO system designers in Tucson, AZ to find that he typically injects 200-250mv pp into the Vin pin with the input capacitor removed.

Regards

Bill

0 Pawel Holeksa over 14 years ago in reply to Bill Stokes

Prodigy 130 points

Hello Bill,

Thank you a lot for the information.

Best Regards

Pawel

Power management

Power management forum

TPS72718 Power Supply Rejection Ratio