TPS51200: Any issues, when total capacitance on REFOUT pin is 2pF.

Motoyasu Hattori

Genius 9415 points

Part Number: TPS51200

Hi,

The latest datasheet add the following sentence.

If there is a REFOUT capacitors at DDR side, keep total capacitance on REFOUT pin below 0.47 μF.

If total capacitance on REFOUT pin is 2uF, What is happen? Are any issues occurred?

Also, could you please let us know the reason why this limitation is added?

Thanks and best regards,

M.HATTORI.

over 2 years ago

0 Kadeem Samuel over 2 years ago

TI__Genius 15160 points

Hattori-san,

Per the thread linked here, we have not seen issues on the bench using capacitance up to 10uF. Customers have not reported any issues with 4.7uF on the pin. However, it is recommended that new designs keep the total capacitance below 0.47uF, as a precaution.

Thanks,

Kadeem

Power management

Power management forum

TPS51200: Any issues, when total capacitance on REFOUT pin is 2pF.