Announcements

Register now for the most anticipated Asia Pacific Power Seminar 2022

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

MOSFET (Si/SiC) Forum Discussions

kaquino
Level 1
First reply posted First question asked Welcome!
Level 1

Hi,

The subject MOSFET PSPICE model is a SPICE3 Model with thermal RC Network, but I don't see where the TCase and Tj terminals are defined in the model.

 

I pasted the model below.  Refer to the attachment, section 3 where it mentions that there are five connections for the thermal model.

 

Regards,

 

Ken Aquino

SUBCKT irfp90n20d 1 2 3
* SPICE3 MODEL WITH THERMAL RC NETWORK
**************************************
* Model Generated by MODPEX *
*Copyright(c) Symmetry Design Systems*
* All Rights Reserved *
* UNPUBLISHED LICENSED SOFTWARE *
* Contains Proprietary Information *
* Which is The Property of *
* SYMMETRY OR ITS LICENSORS *
*Commercial Use or Resale Restricted *
* by Symmetry License Agreement *
**************************************
* Model generated on Jan 20, 09
* MODEL FORMAT: SPICE3
* Symmetry POWER MOS Model (Version 1.0)
* External Node Designations
* Node 1 -> Drain
* Node 2 -> Gate
* Node 3 -> Source
M1 9 7 8 8 MM L=100u W=100u
.MODEL MM NMOS LEVEL=1 IS=1e-32
+VTO=4.89314 LAMBDA=0.0728314 KP=23.7954
+CGSO=6.18556e-05 CGDO=6.90207e-08
RS 8 3 0.00782975
D1 3 1 MD
.MODEL MD D IS=2.15133e-09 RS=0.00663922 N=1.22889 BV=200
+IBV=0.00025 EG=1 XTI=2.83766 TT=1e-07
+CJO=1.21233e-08 VJ=0.753647 M=0.708405 FC=0.5
RDS 3 1 1e+07
RD 9 1 0.00541017
RG 2 7 4.23616
D2 4 5 MD1
* Default values used in MD1:
* RS=0 EG=1.11 XTI=3.0 TT=0
* BV=infinite IBV=1mA
.MODEL MD1 D IS=1e-32 N=50
+CJO=8.32478e-09 VJ=0.5 M=0.9 FC=1e-08
D3 0 5 MD2
* Default values used in MD2:
* EG=1.11 XTI=3.0 TT=0 CJO=0
* BV=infinite IBV=1mA
.MODEL MD2 D IS=1e-10 N=0.4 RS=3e-06
RL 5 10 1
FI2 7 9 VFI2 -1
VFI2 4 0 0
EV16 10 0 9 7 1
CAP 11 10 9.439e-09
FI1 7 9 VFI1 -1
VFI1 11 6 0
RCAP 6 10 1
D4 0 6 MD3
* Default values used in MD3:
* EG=1.11 XTI=3.0 TT=0 CJO=0
* RS=0 BV=infinite IBV=1mA
.MODEL MD3 D IS=1e-10 N=0.4
.ENDS irfp90n20d

*SPICE Thermal Model Subcircuit
.SUBCKT irfp90n20dt 4 1

R_RTHERM1 4 3 0.114432021
R_RTHERM2 3 2 0.086238625
R_RTHERM3 2 1 0.059703663
C_CTHERM1 4 1 0.009962
C_CTHERM2 3 1 0.334618
C_CTHERM3 2 1 16.79294

.ENDS irfp90n20dt

 

0 Likes
1 Solution
Abhilash_P
Moderator
Moderator 25 likes received 250 replies posted 250 sign-ins
Moderator

Hi,

 

  Thank you for posting on the Infineon developer community. 

I can see that there are only 3 nodes in your simulation model. 

To derive the level 3 model from the simetrix please follow the steps mentioned in the below thread,

https://community.infineon.com/t5/Power-MOSFET/Simulating-Power-MOSFETs-in-Simetrix-Simplis-Elements...

For additional details you can also refer the user manual,

http://www.simetrix.co.uk/Files/manuals/8.2/UsersManual.pdf

 

Please let me know if you were able to create L3 model. 

 

Regards,

Abhilash P

View solution in original post

0 Likes
1 Reply
Abhilash_P
Moderator
Moderator 25 likes received 250 replies posted 250 sign-ins
Moderator

Hi,

 

  Thank you for posting on the Infineon developer community. 

I can see that there are only 3 nodes in your simulation model. 

To derive the level 3 model from the simetrix please follow the steps mentioned in the below thread,

https://community.infineon.com/t5/Power-MOSFET/Simulating-Power-MOSFETs-in-Simetrix-Simplis-Elements...

For additional details you can also refer the user manual,

http://www.simetrix.co.uk/Files/manuals/8.2/UsersManual.pdf

 

Please let me know if you were able to create L3 model. 

 

Regards,

Abhilash P

0 Likes