Simscape calculates the MOSfet gain factor k with the value R_DS(on) and V_GS for R_DS(on). I don't get how it comes to the formula.
I tried some different equations and tested if it is true by using another MOSFET where I entered directly my calculated gain. But no matter what I do, I always get different results in my test circuit for those MOSFETs. The test circuit is just Vgs, Vds + Mosfet + resistor.
Does anybody know how they calculate the gain?
Apart from that I am also wondering why the current Id(R_DS(on)) is used for calculating the output resistance. What is this needed for, if the threshold-based model is based on the Schiman-Hodges equations?