Adapt VDMOS Vth temperature coefficient to usual notation with - for nch and + for pch.

examples/probe/F5models.lib

@@ -27,7 +27,7 @@ R2 2 3 {value*(1-ratio)+ 1m}
 + Cgdmax=2.45n Cgdmin=10p a=0.3 Cgs=1.2n
 + Is=60p N=1.1 Rb=14m XTI=3
 + Cjo=1.5n Vj=0.8 m=0.5
-+ tcvth=0.0065 MU=-1.27 texp0=1.5
++ tcvth=-0.0065 MU=-1.27 texp0=1.5
 + Rthjc=0.4 Cthj=0.1
 + mtriode=0.8
 

examples/probe/VDMOS_models.lib

@@ -4,7 +4,7 @@
 + Cgdmax=2.45n Cgdmin=10p a=0.3 Cgs=1.2n
 + Is=60p N=1.1 Rb=14m XTI=3
 + Cjo=1.5n Vj=0.8 m=0.5
-+ tcvth=0.0065 MU=-1.27 texp0=1.5
++ tcvth=-0.0065 MU=-1.27 texp0=1.5
 + Rthjc=0.4 Cthj=0.1
 + mtriode=0.8
 

examples/vdmos/100W.sp

@@ -84,7 +84,7 @@ plot inoise_spectrum
 + Cgdmax=2.45n Cgdmin=10p a=0.3 Cgs=1.2n
 + Is=60p N=1.1 Rb=14m XTI=3
 + Cjo=1.5n Vj=0.8 m=0.5
-+ tcvth=0.0065 MU=-1.27 texp0=1.5
++ tcvth=-0.0065 MU=-1.27 texp0=1.5
 + Rthjc=0.4 Cthj=5e-3
 + mtriode=0.8
 .model IRFP9240 VDMOS pchan

examples/vdmos/100W_wingspread.sp

@@ -67,7 +67,7 @@ end
 + Cgdmax=2.45n Cgdmin=10p a=0.3 Cgs=1.2n
 + Is=60p N=1.1 Rb=14m XTI=3
 + Cjo=1.5n Vj=0.8 m=0.5
-+ tcvth=0.0065 MU=-1.27 texp0=1.5
++ tcvth=-0.0065 MU=-1.27 texp0=1.5
 *+ Rthjc=0.4 Cthj=5e-3
 + mtriode=0.8
 .model IRFP9240 VDMOS pchan

examples/vdmos/crss_coss_ciss.sp

@@ -40,7 +40,7 @@ plot 'i(v6)/deriv(v(d4))' vs v(d2p) xlog xlimit 1 100 ylimit 0 3n title "IRFP924
 + Cgdmax=2.45n Cgdmin=10p a=0.3 Cgs=1.2n
 + Is=60p N=1.1 Rb=14m XTI=3
 + Cjo=1.5n Vj=0.8 m=0.5
-+ tcvth=0.0065 MU=-1.27 texp0=1.5
++ tcvth=-0.0065 MU=-1.27 texp0=1.5
 *+ Rthjc=0.4 Cthj=5e-3
 + mtriode=0.8
 .model IRFP9240 VDMOS pchan

examples/vdmos/dcdc.sp

@@ -26,7 +26,7 @@ V4 out2   0      0.0
 + Cgdmax=.2n Cgdmin=.05n a=0.3 Cgs=.12n 
 + Is=17p N=1.1 Rb=80m XTI=3
 + Cjo=.25n Vj=0.8 m=0.5
-+ tcvth=0.007 MU=-1.27 texp0=1.5
++ tcvth=-0.007 MU=-1.27 texp0=1.5
 
 .model MBRS340 D(Is=22.6u Rs=.042 N=1.094 Cjo=480p M=.61 Eg=.69 Xti=2)
 

examples/vdmos/self-heating.sp

@@ -10,7 +10,7 @@ VD D 0 2V
 + Cgdmax=2.45n Cgdmin=10p a=0.3 Cgs=1.2n
 + Is=60p N=1.1 Rb=14m XTI=3
 + Cjo=1.5n Vj=0.8 m=0.5
-+ tcvth=0.0065 MU=-1.27 texp0=1.5
++ tcvth=-0.0065 MU=-1.27 texp0=1.5
 + Rthjc=0.02 Cthj=1e-3 Rthca=1000
 + mtriode=0.8
 .control

examples/vdmos/soa_chk.sp

@@ -5,7 +5,7 @@ VDMOS SOA check
 + Rd=61m Rs=18m Rg=3 Rds=1e7
 + Cgdmax=2.45n Cgdmin=10p a=0.3 Cgs=1.2n
 + Is=60p N=1.1 Rb=14m Cjo=1.5n XTI=3
-+ tcvth=0.0065 MU=-1.27 texp0=1.5
++ tcvth=-0.0065 MU=-1.27 texp0=1.5
 + mtriode=0.8
 + Vgs_max=20 Vgd_max=20 Vds_max=200
 

src/spicelib/devices/vdmos/vdmostemp.c

@@ -47,7 +47,7 @@ void VDMOStempUpdate(VDMOSmodel *inModel, VDMOSinstance *here, double Temp, CKTc
     here->VDMOStTransconductance = model->VDMOStransconductance 
                                    * here->VDMOSm * pow(ratio, model->VDMOSmu);
 
-    here->VDMOStVth = model->VDMOSvth0 - model->VDMOStype * model->VDMOStcvth * dt;
+    here->VDMOStVth = model->VDMOSvth0 + model->VDMOStcvth * dt;
 
     here->VDMOStksubthres =  model->VDMOSksubthres * (1.0 + (model->VDMOStksubthres1 * dt) + (model->VDMOStksubthres2 * dt * dt));