Adding & using a subckt model to LTSpice

Thread Starter

carlmart

Joined Jul 14, 2010
39
This is a part I haven't yet managed completely: having the data, how do you convert it into a model you can use in LTSpice.

I would certainly appreciate some help there.

Let's use an actual example. I have the data for a mosfet part. How do I convert it and insert it on an existing simulation?

* MODELLING FOR STN1HNK60

.SUBCKT STN1HNK60 1 2 3
LG 2 4 7.5E-09
LS 12 3 7.5E-09
LD 6 1 4.5E-09
RG 4 5 7.009
RS 9 12 0.434E-02
RD 7 6 6.464
RJ 8 7 0.391E-02
CGS 5 9 0.205E-09
CGD 7 10 0.241E-09
CK 11 7 0.379E-11
DGD 11 7 DGD
DBS 12 6 DBS
DBD 9 7 DBD
MOS 13 5 9 9 MOS L=1u W=1u
E1 10 5 101 0 1
E2 11 5 102 0 1
E3 8 13 POLY(2) 6 8 6 12 0 0 0 0 0.424E-01
G1 0 100 7 5 1u
D1 100 101 DID
D2 102 100 DID
R1 101 0 1MEG
R2 102 0 1MEG

.MODEL MOS NMOS
+ LEVEL = 3
+ VTO = 3.667
+ PHI = 0.949
+ IS = 0.1E-12
+ JS = 0
+ THETA = 0.882E-01
+ KP = 2.607

.MODEL DGD D
+ IS = 0.1E-12
+ CJO = 0.166E-10
+ VJ = 0.721
+ M = 0.355
.MODEL DBD D
+ IS = 0.1E-12
+ CJO = 0.128E-10
+ VJ = 0.749
+ M = 0.332
.MODEL DBS D
+ IS = 0.1E-12
+ BV = 669
+ N = 1
+ TT = 0.228E-06
+ RS = 0.452E-02
.MODEL DID D
+ IS = 0.01E-12
+ RS = 0
+ BV = 679
.ENDS STN1HNK60

* END OF MODELLING

Thanks!
 

kubeek

Joined Sep 20, 2005
5,776
I typically open that file in ltspice, then right click the .subckt line and select create symbol. It creates the part with default graphics and you can use it from the AutoGenerated folder in components. It is ugly and you have to be careful which pin is which, but it is fast.
 

Thread Starter

carlmart

Joined Jul 14, 2010
39
OK. I had done that, but I couldn't find the part to load into the sim. Now I did.

Is there a way I can use a mosfet symbol instead of that yellow box?
 
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