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WEBENCH® Tools/TPS55010: Why is VIN=3.3V~5V、Vout=3.3V Iout=0.5A application impossible?

Part Number: TPS55010

Tool/software: WEBENCH® Design Tools

I have designed VIN=3.3V~5V, Vout=3.3V Iout=0.5A application using WEBENCH.

However, WEBENCH could not design this application.

Its comments are that switch current limit exceed and device L.S. switch current exceed..

High side current limit is 2A (MIN) and low side current limit is -3A (MIN)

I think that this TPS55010 current limit has enough margin for this application.

Where is there design limit?