TPS54316: Schematic Review

ikon

Genius 5355 points

Part Number: TPS54316

Hi Support, please review attached.

over 4 years ago

0 JohnTucker over 4 years ago

TI__Guru**** 191445 points

Ikon,

What is the ESR of the output capacitors?

0 ikon over 4 years ago in reply to JohnTucker

Genius 5355 points

Hi John,

Input: C282 is 22uF, T498C226M016ATE400, ESR=400mohm

Output: C286, C287 is 220uF, T591D227M010ATE080, ESR=80mohm

Thanks.

0 JohnTucker over 4 years ago in reply to ikon

TI__Guru**** 191445 points

Ikon,

That design is right on the edge for stability. One additional 220 uF at the output would be better. You will need some ceramic bypass capacitor on the input. 10 uF is recommended. The BOOT capacitor is a little large. it should be between .022 uF and 0.1 uF, 0.047 uF is recommended.

0 ikon over 4 years ago in reply to JohnTucker

Genius 5355 points

Hi John, please review below amended.

0 JohnTucker over 4 years ago in reply to ikon

TI__Guru**** 191445 points

ikon,

That looks good.

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TPS54316: Schematic Review