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WEBENCH® Tools/TPS53353: Output capacitor requirements can't be meet in the NEW Webench Power Design

yervant
Prodigy 60 points
Part Number: TPS53353

Tool/software: WEBENCH® Design Tools

Hi,

I notice there was an update to Webench recently, and found that when designing with TPS53353, the suggested output capacitors will be several mF, while in the earlier version, the value is just several hundreds of uF.

See the following designs for details:

12V-12V to 1.2V @ 15A:

https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=D12DD8BB86FC87C4

12V-12V to .92V @ 20A:

https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=219445743AEE6122

Several mF output capacitor would be too much. I need both 0.92V and 1.2V output with two TPS53353, and I'm quite confused with the Webench designs.

Please clarify. Thanks!

Best regards,

yervant