I am building a boost converter, for my final year project I require 300volts dc in 400 volts dc out. I have calculated my inductor to be 3mHENRY. And capacitor to be 1.25u farad . when i simulate this circuit. there is a surge to 480 volts . it then settles to around 410volts .My switch in the simulation is a Stw11nb80 mosfet (800volts 11amp). the current in the boost converter is 2 amps. Is this surge due to the mosfet? and what ways could this be maintained.also i have to do an interface for this boost with a pic does any one know anything about this . any help is welcome .Thanking you studenttwo34.