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WEBENCH® Tools/TPS54527: cannot create any 5v input to 3.3v output design with 4.5-5A

Part Number: TPS54527

Tool/software: WEBENCH® Design Tools

Hi

I want to design a 5v input to 3.3v output design with near to 5A. In datasheet does  not mentioned that it has any constraint to meet these conditions but when I want to simulate it with WEBENCH  "Design cannot be created!". what is the problem? and what should I do to have this simulation design in Cadence Pspice? (can I rely on its model accuracy when I cannot reach to its design with my favorite design inputs in WEBENCH ?) and another question is: does TPS54527 support 5A  in any input conditions?