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WEBENCH® Tools/TPS40170: Rilim, Iocp, calculation

Heng Chuan Shu
Intellectual 290 points
Part Number: TPS40170

Tool/software: WEBENCH® Design Tools

Hi,

I am using webench to design TPS40170.  I found that the Iocp is not provided in the report thus I tried to manually calculate it using the equation (6) on page 15.

Rilim = (Ioc*Rdson)/9uA

Ioc = (Rilim*9uA)/Rdson = (23.7k*9u)/2.7mohm = 79A

This number seems too high.  Am I missing anything here?

Link to webench design

https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=8A28D17D85B139C0

Best regards,

HC