TPS51116: change in tolerance on ceramic cap on c6

Michael T Schneider

Part Number: TPS51116

Hello,
One of my customers is currently use a 100uF 10% tolerance low-ESR ceramic cap on C6 in their application. However, the cap they are using is going obsolete and they only have have options for a 100uF 20% tolerance cap.

Can we get confirmation of what this will effect (if anything)... should this be OK?

The current design: Pin 20 (LL) to 2.2uH 20% tolerance 8A (L1) in series with a 100uF 20% tolerance 6.3V (C6)

over 7 years ago

0 Qian Chen over 7 years ago

TI__Mastermind 24075 points

Hi Michael,

Can you provide customer's schematic? I don't know which capacitor is C6.

You can also send the schematic to my email if it can not be published on E2E.

Thanks

Qian

0 Michael T Schneider over 7 years ago in reply to Qian Chen

TI__Expert 3790 points

Qian,

Thanks for the response the C6 cap that is being referenced is the below. They are just looking for some reasurance that the change in tolerance wont have a great effect on the system. but if it might please let me know and I can communicate what effect they might see.

0 Qian Chen over 7 years ago in reply to Michael T Schneider

TI__Mastermind 24075 points

Hi Michael,

It should be fine to replace the cap with the new one.

To play safe, it is suggest to do some basic test after the change.

Thanks

Qian

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TPS51116: change in tolerance on ceramic cap on c6