**Part Number:**LMZ14203

Hi There,

I would like to use a LMZ14203. The input is 26 V, and the output should be 5 V with up to 3 A.

According to Datasheet of LMZ14203 chap.8 Application and Implementation, there is no formula information to select CFF.

Regarding

As for the limit of Ron, Ron >= Vin(Max) × 150ns /(1.3 × 10^-10) is given as equation (17).

But what is the limit of maximum Ron?

Although we simulated WEBENCH with our set-up and got specific values of Ron and Cff,

Thoery or Algorithim to decide Ron and Cff is needed.

Any mothods to calculate Ron and Cff for input 26 V, output 5 V with up to 3 A?

My WEBENCH result summary is attached.