When the values of components given in the data sheet are put into the simulation program they do not even come close to passing CISPR 25, and when I use just the simulation tool, minor changes cause erratic changes in other components, with some components always jumping back to a default value. I like this part, the product description sounds good, and the on-line simulation tool is handy, BUT I cannot trust the results... I did a prior design with a TI part and the simulation tool, and it did not pass. TI seems to be the big player in these switching regulators, but it is all a shell game if the design tools do not work. I might as well be guessing as to what parts to use....