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spice model of depletion mode mosfet

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atlantis83

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depletion mosfet

Hi.
Where can I find the spice model of depletion-mode mosfet in 0.25um technology?
 

depletion mode mosfet spice

I suppose you know you could simply "write" your model with all it's parameters and simulate on orcad, according to the model you need.

You will simply add the Mbreakd mosfet and choose Edit-->Edit pspice model.
In the text editor that will appear you will be able to write all the parameters of your device freely. By saving and returning to your design, the model is updated within your project and VOILA ... you can simulate with the new model.
 

editing mosfet in pspice

But I dont use Orcad or PSpice.
I use Winspice.
Did you mean if I change the treshold voltage in the enhancement-mode model of mosfet(which I have) I can get the model of depletion -mode.
 

depletion mode spice model

exactly, the main difference is the polarity of the threshold voltage.
but do consider all the other parameters too, W,L, Lambda, and whatever else might be differing in your model.

Good luck, salam.

p.s. if my post has helped in any way then please do click on the "helped me" icon.
thanks.
 

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    atlantis83

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Re: depletion mode spice model

Ahmed Ragab said:
exactly, the main difference is the polarity of the threshold voltage.
but do consider all the other parameters too, W,L, Lambda, and whatever else might be differing in your model.

Good luck, salam.

p.s. if my post has helped in any way then please do click on the "helped me" icon.
thanks.
Click to expand...

GOOGLE

Depletion Mode N-channel MOSFET

.MODEL IXTT20N50D NMOS
+ LEVEL=3
+ L=2.0000E-6
+ W=5.5000
+ KP=1.0446E-6
+ RS=1.0000E-3
+ RD=.22202
+ VTO=-.89028
+ RDS=20.000E6
+ TOX=2.0000E-6
+ CGSO=3.5684E-9
+ CGDO=37.622E-12
+ CBD=4.8729E-9
+ MJ=1.5000
+ PB=2.6055
+ RG=10.000E-3
+ IS=1.3714E-6
+ N=2.0283
+ RB=1.0000E-9
+ GAMMA=0
+ KAPPA=0
 

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