The TPS40210 TINA-TI "Reference Circuit" is a very odd one- it only shows the loop gain & phase characteristics.
To me, a boost power supply circuit simulation would show (at the minimum) the input/output voltage & current waveforms in a transient analysis. I'm not sure what this reference circuit file is useful for.
The WeBench application fails to find a solution for a 5V in 250V output boost converter and clicking on "Show the reason parts not found" results in a blank page; clicking on "show alternate parts" brings up a spreadsheet populated with LDO regulators. ????????????????