I've searched the forum for this essential piece of information but it seems no one else ever posted it. I want to ask about the MOSFET MODEL in PSPICE ( and generally all other components as well):
This is the model I extracted from Multisim for MOS_3TEN

Database Name : Master Database
Family Group : Transistors
Family : MOS_3TEN
Name : 2N6659
Author : TL
Date : October 07, 1998
Function :
Description : Vdss=35
: Vdgr=35
: Id=1.4
: Rds=3.6
: gFS=0.170
: Ft=
: Pd=6.25
: Package=TO-39
Thermal resistance junction : 170.00
Thermal resistance case : 20.00
Power dissipation : 6.25
Derating Knee Point : 25.00
Min Operating Temp : -55.00
Max Operating Temp : 150.00
ESD : 0.00

I notice there are a lot of parameters I ever recognise (even after I look up in many books) Do anyone know what they mean (or represent)
For example: Vdss (may be Vds saturated...) as I guest. (I concern about What are all like Vdgr, Id, Rds...)
Also, do you know any good source that can give quite a deep explaination about all the parameters in PSPice.

Thank

 

There are two common models for MOSFET, Level 3 and BSIM3v3. You could get BSIM3 model documents from Berkeley U or get HSPICE manual here. The HSPICE manual contains both L3 and BSIM models parameters and equations. I don't know which version of PSPICE you are using, but most likely that is an L3 model since PSPICE support for BSIM3 came a bit late. The parameters are mostly common, but they sometime have slightly different name and approaches.

The treatments in this manual are complete but you need some understanding on MOSFET to fully appreciate the models. There are also models for other devices such as BJT, diodes, etc.

 

Hi,

Id is the drain current

Rds is the drain to source resistance

You can usually find the definitions of these terms on the data sheet.

Here is a site with two data sheets for the 2N6659

http://www.datasheetcatalog.com/datasheets.../6/2N6659.shtml

I have not found Vgdr at either site.

John

 

Hi,

You will need an adobe reader to read the data sheets.

Here is a site that offers it.

http://top-software-downloads.com/index_en...1f-9e29bd5b6392

John

 

Thank you for all fast replies. This is the best forum I've ever seen.