Fairchild FDP5N50NZ SPICE Model - diyAudio
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Old 5th April 2015, 01:59 AM   #1
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Join Date: Nov 2010
Location: Kansas
Default Fairchild FDP5N50NZ SPICE Model

I'm looking for an N-Channel MOSFET to be used as a follower and the Fairchild FDPF5N50NZ looks like a good candidate. Fairchild provides a PSPICE model for this device but it reports errors and warnings in LTspice. I've included the SPICE model itself along with the errors reported in LTspice.

Code:
**************** Power Discrete MOSFET Electrical Circuit Model *****************
** Product Name: FDPF5N50NZ
** 500V N-Channel MOSFET and TO-220F
** Model Type: BSIM3V3
**-------------------------------------------------------------------------------
.SUBCKT FDPF5N50NZ 2 1 3    
*Nom Temp=25 deg C
Dbody 7 5    DbodyMOD
Dbreak 5 11  DbreakMOD
Ebreak 11 7 17 7 500
Lgate 1 9    1.18e-9
Ldrain 2 5   1.44e-9
Lsource 3 7  9.66e-10
RLgate 1 9   11.8
RLdrain 2 5  14.4
RLsource 3 7 9.66
Rgate 9 6    0.5
It 7 17      1
Rbreak 17 7  RbreakMOD 1
.MODEL RbreakMOD RES (TC1=1.05e-3 TC2=-1.04e-6)
.MODEL DbodyMOD D (IS=1.05e-13 N=1 RS=1.82e-2 TRS1=2.84e-3 TRS2=1e-6 
+ CJO=4.52e-10  M=0.56  VJ=0.47  TT=3.65e-7  XTI=3  EG=1.16)
.MODEL DbreakMOD D (RS=100e-3 TRS1=1e-3 TRS2=1e-6)
Rdrain 5 16 RdrainMOD 1.37
.MODEL RdrainMOD RES (TC1=9.5e-3 TC2=2.64e-5)
M_BSIM3 16 6 7 7 BSIM3 W=0.95 L=2.0e-6 NRS=1
.MODEL Bsim3 NMOS (LEVEL=7 VERSION=3.1 MOBMOD=3 CAPMOD=2 PARAMCHK=1 NQSMOD=0
+ TOX=1100e-10    XJ=1.4e-6      NCH=1.3e17  
+ U0=700          VSAT=1.0e5     DROUT=10.0 
+ DELTA=0.1       PSCBE2=0       RSH=1.09e-3
+ VTH0=4.05       VOFF=-0.1      NFACTOR=1.1
+ LINT=4.32e-7    DLC=4.32e-7    FC=0.5
+ CGSO=2.05e-14   CGSL=0         CGDO=2.25e-12
+ CGDL=2.80e-10   CJ=0           CF=0
+ CKAPPA=0.2      KT1=-1.68      KT2=0
+ UA1=-4.05e-9    NJ=10)
Desd 7 9 DesdMOD
.MODEL DesdMOD D (IS=1.0e-15   N=1   IBV=2.5e-4   BV=53)
.ENDS

******************** Power Discrete MOSFET Thermal Model ************************
** 500V N-Channel MOSFET and TO-220F
**-------------------------------------------------------------------------------
.SUBCKT FDPF5N50NZ_Thermal TH TL
CTHERM1 TH 6 1.600e-4
CTHERM2 6 5  9.500e-4
CTHERM3 5 4  2.200e-3
CTHERM4 4 3  4.000e-2
CTHERM5 3 2  6.600e-2
CTHERM6 2 TL 2.200e-1 
RTHERM1 TH 6 2.500e-2
RTHERM2 6 5  8.800e-2
RTHERM3 5 4  6.300e-1
RTHERM4 4 3  8.510e-1
RTHERM5 3 2  9.430e-1
RTHERM6 2 TL 1.563e+0
.ENDS FDPF5N50NZ_Thermal 
**-------------------------------------------------------------------------------
** Creation: Sep.-28-2010   Rev.: 0.0
** Fairchild Semiconductor
Code:
Error on line 26 : .model u1:bsim3 nmos (level=7 version=3.1 mobmod=3 capmod=2 paramchk=1 nqsmod=0  tox=1100e-10 xj=1.4e-6 nch=1.3e17  u0=700 vsat=1.0e5 drout=10.0  delta=0.1 pscbe2=0 rsh=1.09e-3  vth0=4.05 voff=-0.1 nfactor=1.1  lint=4.32e-7 dlc=4.32e-7 fc=0.5  cgso=2.05e-14 cgsl=0 cgdo=2.25e-12  cgdl=2.80e-10 cj=0 cf=0  ckappa=0.2 kt1=-1.68 kt2=0  ua1=-4.05e-9 nj=10)
    * Unrecognized parameter "fc" -- ignored
Warning: Pscbe2 = 0 is not positive.
Warning: Pd = 0 is less than W.
Warning: Ps = 0 is less than W.
.step vg=2
.step vg=2.1
.step vg=2.2
.step vg=2.3
.step vg=2.4
.step vg=2.5
.step vg=2.6
.step vg=2.7
.step vg=2.8
.step vg=2.9
.step vg=3

Date: Sat Apr 04 20:46:14 2015
Total elapsed time: 0.063 seconds.

tnom = 27
temp = 27
method = trap
totiter = 1067
traniter = 0
tranpoints = 0
accept = 0
rejected = 0
matrix size = 15
fillins = 9
solver = Normal
Matrix Compiler1: 1.39 KB object code size  3.2/2.9/[2.1]
Matrix Compiler2: 1.35 KB object code size  2.7/2.6/[2.0]
Can anyone figure out how to correct this model so that it will run without error in LTspice?

Thanks.

Last edited by Ray Waters; 5th April 2015 at 02:02 AM.
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