WEBENCH® Tools/TPS40210: Automatically selected inputs given the selected part number cause an error

Tool/software: WEBENCH® Design Tools

Hello all, just to let ye know I think I hit a snag in the webench.

I'm looking at playing with a Valve pre-amp circuit for an idea. Given the Valve, (Tube?) element you might guess it's Guitar effects or amplification application. Anyhow musicians usually work with pretty standard 9V supply, but you do get 12V and can double to 9V to 18V. So I want that range of input Voltage and about 250DC Output at possibly 1 Amp. I don't think the Valve circuit will go above an amp.

That's all back ground. So I was looking at the TPS40210 Boost IC and working through the datasheet so see could I make enough sense of it to feel confident that I could make it work for me. There's a compensation circuit, which looks a bit hairy, but the datasheet mentioned 'WEBENCH'. Great I thought that might give me a leg up. So I went to WEBENCH and entered in my part number 'TPS40210' and the web app notified me that it had found the part and automatically filled in the input parameters for the part. So all I had to do was fill in the output voltage and current. How easy is this? So once filled in I clicked to have the web app do it's thing and all I got was an error message to tell me that the input parameters I'd selected were incorrect so it didn't give me a solution, (I didn't select the input parameters they were auto generated by the app). Well it gave me other solutions based on the 'UCC2808D-2', Perhaps I should look at that device. For the moment back to the TPS40210 datasheet, if not the drawing board.