WEBENCH® Tools/LMR23625: Cff suggestion value

Ryo Akashi

Part Number: LMR23625

Tool/software: WEBENCH® Design Tools

Hello experts,

I have question for Cff value of LMR23625 based power supply.

In WEBENCH, I designed power supply in the condition as below;

Input : DC8V-31.5V

Output 5V, 2.1A

At this condition, Cff is suggested 10pF.

But if I followed datasheet calculation (formula 17 and 18), the value will be 25pF.

There is difference between two suggestion.

Which value should I follow better?

Thanks and best regards,

Ryo Akashi

0 Bhushan Waghmare over 5 years ago

Hi Ryo Akashi-San,

Please go ahead with calculated value through datasheet equations. Meanwhile I will correct the Webench calculated value.

Best Regards,

Bhushan

0 Ryo Akashi over 5 years ago in reply to Bhushan Waghmare

Hello Bhushan-san,

Thank you for your reply.

I got it. I will follow datasheet calculation value.

Thanks and best regards,

Ryo Akashi

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