My simulation runs fine but I get this text shown below that pops up after each run ends. It started when I added the part that I have included below also using the .include. Is this something I need to resolve, or can it be ignored. I am kinda new at Ltspice so don't know what to expect sometimes with what it does. Thanks to anyone that can help.
Circuit: * C:\Users\owner\Documents\LTspiceXVII\Custom Amp.asc
Error on line 1747 : .model m6:bsim3 nmos (level=7 version=3.1 mobmod=3 capmod=2 paramchk=1 nqsmod=0 tox=970e-10 xj=1.4e-6 nch=1.7e17 ua=1.6e-9 u0=700 vsat=1.0e5 drout=3.0 pvag=5 delta=0.10 pscbe2=0 rsh=1.0e-3 pdiblc2=1e-7 vth0=3.50 voff=-0.1 nfactor=1.1 lint=5.90e-7 dlc=5.90e-7 fc=0.5 cgso=1.12e-9 cgsl=0 cgdo=1.05e-14 cgdl=1.68e-9 cj=0 cf=0 ckappa=0.20 kt1=-2.07 kt2=0 ua1=1.02e-9 nj=10 )
* Unrecognized parameter "fc" -- ignored
Error on line 1747 : .model m5:bsim3 nmos (level=7 version=3.1 mobmod=3 capmod=2 paramchk=1 nqsmod=0 tox=970e-10 xj=1.4e-6 nch=1.7e17 ua=1.6e-9 u0=700 vsat=1.0e5 drout=3.0 pvag=5 delta=0.10 pscbe2=0 rsh=1.0e-3 pdiblc2=1e-7 vth0=3.50 voff=-0.1 nfactor=1.1 lint=5.90e-7 dlc=5.90e-7 fc=0.5 cgso=1.12e-9 cgsl=0 cgdo=1.05e-14 cgdl=1.68e-9 cj=0 cf=0 ckappa=0.20 kt1=-2.07 kt2=0 ua1=1.02e-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.
Warning: Pscbe2 = 0 is not positive.
Warning: Pd = 0 is less than W.
Warning: Ps = 0 is less than W.
Instance "m:m3:1": Length shorter than recommended for a level 1 MOSFET.
Instance "m:m3:1": Width narrower than recommended for a level 1 MOSFET.
Per .tran options, skipping operating point for transient analysis.
Heightened Def Con from 0.589734 to 0.589734
Date: Fri Jul 07 08:38:35 2017
Total elapsed time: 36.055 seconds.
tnom = 27
temp = 27
method = modified trap
totiter = 236482
traniter = 236482
tranpoints = 62603
accept = 46734
rejected = 15870
matrix size = 262
fillins = 428
solver = Normal
Matrix Compiler1: 44.92 KB object code size 23.9/41.1/[8.5]
Matrix Compiler2: 29.26 KB object code size 7.3/18.3/[4.6]
Heres the part file that caused this error log when I added it with a .include statement.
**************** Power Discrete MOSFET Electrical Circuit Model *****************
** Product Name: FQH8N100C
** 1000V N-Channel MOSFET and TO-247
** Model Type: BSIM3V3
**-------------------------------------------------------------------------------
.SUBCKT FQH8N100C 2 1 3
*Nom Temp=25 deg C
Dbody 7 5 DbodyMOD
Dbreak 5 11 DbreakMOD
Ebreak 11 7 17 7 1000
Lgate 1 9 1.125e-9
Ldrain 2 5 1.440e-9
Lsource 3 7 9.106e-10
RLgate 1 9 11.25
RLdrain 2 5 14.4
RLsource 3 7 9.11
Rgate 9 6 0.5
It 7 17 1
Rbreak 17 7 RbreakMOD 1
.MODEL RbreakMOD RES (TC1=1.18e-3 TC2=-1.15e-6)
.MODEL DbodyMOD D (IS=6.45e-9 N=1.5 RS=4.44e-3 TRS1=3.8e-3 TRS2=5.8e-6
+ CJO=1.76e-09 M=0.53 VJ=0.45 TT=1.09e-6 XTI=3 EG=1.154)
.MODEL DbreakMOD D (RS=100e-3 TRS1=1.0e-3 TRS2=5.0e-6)
Rdrain 5 16 RdrainMOD 1.2
.MODEL RdrainMOD RES (TC1=8.8e-3 TC2=1.66e-5)
M_BSIM3 16 6 7 7 Bsim3 W=1.08 L=2.0e-6 NRS=1
.MODEL Bsim3 NMOS (LEVEL=7 VERSION=3.1 MOBMOD=3 CAPMOD=2 PARAMCHK=1 NQSMOD=0
+ TOX=970e-10 XJ=1.4e-6 NCH=1.7e17 UA=1.6e-9
+ U0=700 VSAT=1.0e5 DROUT=3.0 PVAG=5
+ DELTA=0.10 PSCBE2=0 RSH=1.0e-3 PDIBLC2=1e-7
+ VTH0=3.50 VOFF=-0.1 NFACTOR=1.1
+ LINT=5.90e-7 DLC=5.90e-7 FC=0.5
+ CGSO=1.12e-9 CGSL=0 CGDO=1.05e-14
+ CGDL=1.68e-9 CJ=0 CF=0
+ CKAPPA=0.20 KT1=-2.07 KT2=0
+ UA1=1.02e-9 NJ=10 )
.ENDS
******************** Power Discrete MOSFET Thermal Model ************************
** 1000V N-Channel MOSFET and TO-247
**-------------------------------------------------------------------------------
.SUBCKT FQH8N100C_Thermal TH TL
CTHERM1 TH 6 1.12e-5
CTHERM2 6 5 1.53e-3
CTHERM3 5 4 1.82e-2
CTHERM4 4 3 6.45e-2
CTHERM5 3 2 8.12e-2
CTHERM6 2 TL 5.21e-1
RTHERM1 TH 6 4.00e-4
RTHERM2 6 5 8.10e-3
RTHERM3 5 4 3.40e-2
RTHERM4 4 3 9.10e-2
RTHERM5 3 2 1.02e-1
RTHERM6 2 TL 3.24e-1
.ENDS FQH8N100C_Thermal
**-------------------------------------------------------------------------------
** Creation: Jan.-05-2010 Rev.: 0.0
** Fairchild Semiconductor
I got the same for Pscbe2, Pd, Ps, and Fc when using the Fairchild model for a BSS138W mosfet in LTSpice. I just want to use the mosfet for basic switching and don't have time to become an expert in modelling each one I use. It seems to run just fine, but over what region would results be valid?
OnSemi Tech support gave me this.
This model was made by Fairchild before the merger. In general:
FC is the depletion capacitance coefficient and will probably have little effect on the model as long as it is within the normal range of .1 to .8 (typical is .5)From
https://www.seas.upenn.edu/~jan/spice/PSpice_ReferenceguideOrCAD.pdfPD and PS
The drain and source diffusion perimeters. Their default value is 0.
PSCBE2 second substrate current body effect coefficient m/V 1.0E-5
But none of this helps me to know the region in which the model is valid.