LM5175: 3.3V output

Hi~

I have a question about using the LM5175.
The datasheet states that the LM5175's output voltage range is 0.8~55V.
The datasheet only shows a 12V output example, so I created a 3.3V / 20A output circuit using WEBENCH® Designer, but I am not getting any results. (input is 12V)
We confirmed that a 3.3V/1A circuit can be created in WEBENCH® Designer.
Is it possible to use 3.3V?

Thanks.