I was trying to use an NMOS with an early voltage value specification (of 100 v to be precise).
I looked through the powermos.lib (powermos.olb) library and I could not find any parameters that may specify early voltage. I noticed that "lambda" can be used as a parameter (is this correct?): http://bwrc.eecs.berkeley.edu/classes/icbook/spice/userguide/elements.html#676
So I went about simply plopping an NMOS device on the canvas and then right click -> edit the pspice model.
Then I went about copying a comparable NMOS device clicking from the menu of the model editor: Model-> copy from. After copying over a model and renaming it "M2N6661WithLambda" I edited it slightlyto add a lambda value as follows:
.model M2N6661WithLambda NMOS(Level=3 lambda=0.01 Gamma=0 Delta=0 Eta=0 Theta=0 Kappa=0.2 Vmax=0 Xj=0+ Tox=2u Uo=600 Phi=.6 Kp=1.05u W=.18 L=2u Rs=20m Vto=2 Rd=0+ Rds=9MEG Cgso=15.45p Cgdo=8.947p Cbd=108.7p Mj=.5 Pb=.8 Fc=.5+ Rg=209.5 Is=10f N=1 Rb=1m)
Now assuming I am doing everything right upto now , how do I use this new NMOS in my project / circuit ? I cannot see it in the parts (I tried saving the model editor and then removing and adding powermos.lib and powermos.olb all over again but this new part does not show up and it is not saved to the powermos.lib library apparently.
Is there a step by step tutorial online that allows someone to create and add/use such a mosfet? perhaps the easiest and simplest possible way?
I noticed another method specified is using a generic MBreakN3 model and then just add parameters as in here :
which seems to be easier and simpler to do...