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VDMOS consider body diode thermal contribution for self-heatine effect

This commit is contained in:
dwarning 2020-03-28 17:57:09 +01:00 committed by Holger Vogt
parent c86cd740d6
commit d3da0d5ebf
11 changed files with 169 additions and 113 deletions
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10
examples/vdmos/ro_11_vdmos.sp
View File

@ -3,8 +3,8 @@
vdd 1 0 5.0 vdd 1 0 5.0
.subckt inv out in vdd vss .subckt inv out in vdd vss
mp1 out in vdd p1 l=2u w=20u mp1 out in vdd p1 m=2
mn1 out in vss n1 l=2u w=10u mn1 out in vss n1
c1 out vss 0.2p c1 out vss 0.2p
.ends .ends
@ -18,10 +18,10 @@ xinv7 9 8 1 0 inv
xinv8 10 9 1 0 inv xinv8 10 9 1 0 inv
xinv9 2 10 1 0 inv xinv9 2 10 1 0 inv
.model N1 vdmos cgdmin=0.05p cgdmax=0.2p a=1.2 cgs=0.15p rg=10 kp=2e-5 rb=1e7 cjo=1n ksubthres=0.2 .model N1 vdmos cgdmin=0.05p cgdmax=0.2p a=1.2 cgs=0.15p rg=10 kp=1e-5 rb=1e7 cjo=1n ksubthres=0.2
.model P1 vdmos cgdmin=0.05p cgdmax=0.2p a=1.2 cgs=0.15p rg=10 kp=2e-5 rb=1e7 cjo=1n pchan ksubthres=0.2 .model P1 vdmos cgdmin=0.05p cgdmax=0.2p a=1.2 cgs=0.15p rg=10 kp=1e-5 rb=1e7 cjo=1n pchan ksubthres=0.2
.tran 0.1n 1u .tran 0.1n 5u
.control .control

2
src/spicelib/devices/vdmos/vdmos.c
View File

@ -13,8 +13,6 @@ VDMOS: 2018 Holger Vogt, 2020 Dietmar Warning
IFparm VDMOSpTable[] = { /* parameters */ IFparm VDMOSpTable[] = { /* parameters */
IOPU("m", VDMOS_M, IF_REAL, "Multiplier"), IOPU("m", VDMOS_M, IF_REAL, "Multiplier"),
IOPU("l", VDMOS_L, IF_REAL, "Length"),
IOPU("w", VDMOS_W, IF_REAL, "Width"),
IP("off", VDMOS_OFF, IF_FLAG, "Device initially off"), IP("off", VDMOS_OFF, IF_FLAG, "Device initially off"),
IOPU("icvds", VDMOS_IC_VDS, IF_REAL, "Initial D-S voltage"), IOPU("icvds", VDMOS_IC_VDS, IF_REAL, "Initial D-S voltage"),
IOPU("icvgs", VDMOS_IC_VGS, IF_REAL, "Initial G-S voltage"), IOPU("icvgs", VDMOS_IC_VGS, IF_REAL, "Initial G-S voltage"),

6
src/spicelib/devices/vdmos/vdmosask.c
View File

@ -41,12 +41,6 @@ VDMOSask(CKTcircuit *ckt, GENinstance *inst, int which, IFvalue *value,
case VDMOS_M: case VDMOS_M:
value->rValue = here->VDMOSm; value->rValue = here->VDMOSm;
return(OK); return(OK);
case VDMOS_L:
value->rValue = here->VDMOSl;
return(OK);
case VDMOS_W:
value->rValue = here->VDMOSw;
return(OK);
case VDMOS_OFF: case VDMOS_OFF:
value->iValue = here->VDMOSoff; value->iValue = here->VDMOSoff;
return(OK); return(OK);

29
src/spicelib/devices/vdmos/vdmosconv.c
View File

@ -23,6 +23,7 @@ VDMOSconvTest(GENmodel *inModel, CKTcircuit *ckt)
double vgd; double vgd;
double vgdo; double vgdo;
double tol; double tol;
double delvd,vd,cd;
int selfheat; int selfheat;
double delTemp, deldelTemp; double delTemp, deldelTemp;
@ -77,6 +78,34 @@ VDMOSconvTest(GENmodel *inModel, CKTcircuit *ckt)
ckt->CKTtroubleElt = (GENinstance *) here; ckt->CKTtroubleElt = (GENinstance *) here;
return(OK); /* no reason to continue, we haven't converged */ return(OK); /* no reason to continue, we haven't converged */
} }
/*
* initialization
*/
vd = *(ckt->CKTrhsOld+here->VDIOposPrimeNode)-
*(ckt->CKTrhsOld + here->VDMOSdNode);
delvd=vd- *(ckt->CKTstate0 + here->VDIOvoltage);
cdhat= *(ckt->CKTstate0 + here->VDIOcurrent) +
*(ckt->CKTstate0 + here->VDIOconduct) * delvd +
*(ckt->CKTstate0 + here->VDIOdIdio_dT) * deldelTemp;
cd= *(ckt->CKTstate0 + here->VDIOcurrent);
/*
* check convergence
*/
tol=ckt->CKTreltol*
MAX(fabs(cdhat),fabs(cd))+ckt->CKTabstol;
if (fabs(cdhat-cd) > tol) {
ckt->CKTnoncon++;
ckt->CKTtroubleElt = (GENinstance *) here;
return(OK); /* don't need to check any more device */
}
} }
} }
return(OK); return(OK);

89
src/spicelib/devices/vdmos/vdmosdefs.h
View File

@ -54,8 +54,6 @@ typedef struct sVDMOSinstance {
double VDMOSm; /* parallel device multiplier */ double VDMOSm; /* parallel device multiplier */
double VDMOSl; /* the length of the channel region */
double VDMOSw; /* the width of the channel region */
double VDMOSsourceConductance; /*conductance of source(or 0):set in setup*/ double VDMOSsourceConductance; /*conductance of source(or 0):set in setup*/
double VDMOSdrainConductance; /*conductance of drain(or 0):set in setup*/ double VDMOSdrainConductance; /*conductance of drain(or 0):set in setup*/
double VDMOSdrainResistance; /*resistance of drain(or 0): set in temp*/ double VDMOSdrainResistance; /*resistance of drain(or 0): set in temp*/
@ -107,6 +105,7 @@ typedef struct sVDMOSinstance {
double VDMOScdT; double VDMOScdT;
double VDMOScth; /* current alias power */ double VDMOScth; /* current alias power */
// double VDIOdIth_dVdio;
/* /*
* naming convention: * naming convention:
* x = vgs * x = vgs
@ -151,8 +150,6 @@ typedef struct sVDMOSinstance {
unsigned VDMOStempGiven :1; /* instance temperature specified */ unsigned VDMOStempGiven :1; /* instance temperature specified */
unsigned VDMOSdtempGiven :1; /* instance delta temperature specified */ unsigned VDMOSdtempGiven :1; /* instance delta temperature specified */
unsigned VDMOSmGiven :1; unsigned VDMOSmGiven :1;
unsigned VDMOSlGiven :1;
unsigned VDMOSwGiven :1;
unsigned VDMOSdNodePrimeSet :1; unsigned VDMOSdNodePrimeSet :1;
unsigned VDMOSsNodePrimeSet :1; unsigned VDMOSsNodePrimeSet :1;
unsigned VDMOSicVDSGiven :1; unsigned VDMOSicVDSGiven :1;
@ -163,68 +160,68 @@ typedef struct sVDMOSinstance {
unsigned VDMOSmodeGiven :1; unsigned VDMOSmodeGiven :1;
double *VDMOSDdPtr; /* pointer to sparse matrix element at double *VDMOSDdPtr; /* pointer to sparse matrix element at
* (Drain node,drain node) */ (Drain node,drain node) */
double *VDMOSGgPtr; /* pointer to sparse matrix element at double *VDMOSGgPtr; /* pointer to sparse matrix element at
* (gate node,gate node) */ (gate node,gate node) */
double *VDMOSSsPtr; /* pointer to sparse matrix element at double *VDMOSSsPtr; /* pointer to sparse matrix element at
* (source node,source node) */ (source node,source node) */
double *VDMOSDPdpPtr; /* pointer to sparse matrix element at double *VDMOSDPdpPtr; /* pointer to sparse matrix element at
* (drain prime node,drain prime node) */ (drain prime node,drain prime node) */
double *VDMOSSPspPtr; /* pointer to sparse matrix element at double *VDMOSSPspPtr; /* pointer to sparse matrix element at
* (source prime node,source prime node) */ (source prime node,source prime node) */
double *VDMOSDdpPtr; /* pointer to sparse matrix element at double *VDMOSDdpPtr; /* pointer to sparse matrix element at
* (drain node,drain prime node) */ (drain node,drain prime node) */
double *VDMOSGdpPtr; /* pointer to sparse matrix element at double *VDMOSGdpPtr; /* pointer to sparse matrix element at
* (gate node,drain prime node) */ (gate node,drain prime node) */
double *VDMOSGspPtr; /* pointer to sparse matrix element at double *VDMOSGspPtr; /* pointer to sparse matrix element at
* (gate node,source prime node) */ (gate node,source prime node) */
double *VDMOSSspPtr; /* pointer to sparse matrix element at double *VDMOSSspPtr; /* pointer to sparse matrix element at
* (source node,source prime node) */ (source node,source prime node) */
double *VDMOSDPspPtr; /* pointer to sparse matrix element at double *VDMOSDPspPtr; /* pointer to sparse matrix element at
* (drain prime node,source prime node) */ (drain prime node,source prime node) */
double *VDMOSDPdPtr; /* pointer to sparse matrix element at double *VDMOSDPdPtr; /* pointer to sparse matrix element at
* (drain prime node,drain node) */ (drain prime node,drain node) */
double *VDMOSDPgPtr; /* pointer to sparse matrix element at double *VDMOSDPgPtr; /* pointer to sparse matrix element at
* (drain prime node,gate node) */ (drain prime node,gate node) */
double *VDMOSSPgPtr; /* pointer to sparse matrix element at double *VDMOSSPgPtr; /* pointer to sparse matrix element at
* (source prime node,gate node) */ (source prime node,gate node) */
double *VDMOSSPsPtr; /* pointer to sparse matrix element at double *VDMOSSPsPtr; /* pointer to sparse matrix element at
* (source prime node,source node) */ (source prime node,source node) */
double *VDMOSSPdpPtr; /* pointer to sparse matrix element at double *VDMOSSPdpPtr; /* pointer to sparse matrix element at
* (source prime node,drain prime node) */ (source prime node,drain prime node) */
/* added for VDMOS */ /* added for VDMOS */
double *VDMOSGPgpPtr; /* pointer to sparse matrix element at double *VDMOSGPgpPtr; /* pointer to sparse matrix element at
* (gate prime node, gate prime node) */ (gate prime node, gate prime node) */
double *VDMOSGPdpPtr; /* pointer to sparse matrix element at double *VDMOSGPdpPtr; /* pointer to sparse matrix element at
* (gate prime node, drain prime node) */ (gate prime node, drain prime node) */
double *VDMOSGPspPtr; /* pointer to sparse matrix element at double *VDMOSGPspPtr; /* pointer to sparse matrix element at
* (gate prime node, source prime node) */ (gate prime node, source prime node) */
double *VDMOSDPgpPtr; /* pointer to sparse matrix element at double *VDMOSDPgpPtr; /* pointer to sparse matrix element at
* (drain prime node, gate prime node) */ (drain prime node, gate prime node) */
double *VDMOSSPgpPtr; /* pointer to sparse matrix element at double *VDMOSSPgpPtr; /* pointer to sparse matrix element at
* (source prime node, gate prime node) */ (source prime node, gate prime node) */
double *VDMOSGgpPtr; /* pointer to sparse matrix element at double *VDMOSGgpPtr; /* pointer to sparse matrix element at
* (gate node, gate prime node) */ (gate node, gate prime node) */
double *VDMOSGPgPtr; /* pointer to sparse matrix element at double *VDMOSGPgPtr; /* pointer to sparse matrix element at
* (gate prime node, gate node) */ (gate prime node, gate node) */
double *VDMOSDsPtr; /* pointer to sparse matrix element at double *VDMOSDsPtr; /* pointer to sparse matrix element at
* (source node, drain node) */ (source node, drain node) */
double *VDMOSSdPtr; /* pointer to sparse matrix element at double *VDMOSSdPtr; /* pointer to sparse matrix element at
* (drain node, source node) */ (drain node, source node) */
/* body diode */ /* body diode */
double *VDIORPdPtr; /* pointer to sparse matrix element at double *VDIORPdPtr; /* pointer to sparse matrix element at
* (diode prime node, drain node) */ (diode prime node, drain node) */
double *VDIODrpPtr; /* pointer to sparse matrix element at double *VDIODrpPtr; /* pointer to sparse matrix element at
* (drain node, diode prime node) */ (drain node, diode prime node) */
double *VDIORPrpPtr; /* pointer to sparse matrix element at double *VDIORPrpPtr; /* pointer to sparse matrix element at
* (diode prime node, diode prime node) */ (diode prime node, diode prime node) */
double *VDIOSrpPtr; /* pointer to sparse matrix element at double *VDIOSrpPtr; /* pointer to sparse matrix element at
* (source node, diode prime node) */ (source node, diode prime node) */
double *VDIORPsPtr; /* pointer to sparse matrix element at double *VDIORPsPtr; /* pointer to sparse matrix element at
* (diode prime node, source node) */ (diode prime node, source node) */
/* self heating */ /* self heating */
double *VDMOSTemptempPtr; double *VDMOSTemptempPtr; /* Transistor thermal contribution */
double *VDMOSTempdpPtr; double *VDMOSTempdpPtr;
double *VDMOSTempspPtr; double *VDMOSTempspPtr;
double *VDMOSTempgpPtr; double *VDMOSTempgpPtr;
@ -232,14 +229,17 @@ typedef struct sVDMOSinstance {
double *VDMOSDPtempPtr; double *VDMOSDPtempPtr;
double *VDMOSSPtempPtr; double *VDMOSSPtempPtr;
double *VDIOTempposPrimePtr; /* Diode thermal contribution */
double *VDIOTempnegPtr;
double *VDIOPosPrimetempPtr;
double *VDIONegtempPtr;
double *VDMOSTcasetcasePtr; /* for Rthjc */ double *VDMOSTcasetcasePtr; /* for Rthjc */
double *VDMOSTcasetempPtr; double *VDMOSTcasetempPtr;
double *VDMOSTemptcasePtr; double *VDMOSTemptcasePtr;
double *VDMOSTptpPtr; /* for Rthca */ double *VDMOSTptpPtr; /* for Rthca */
double *VDMOSTptcasePtr; double *VDMOSTptcasePtr;
double *VDMOSTcasetpPtr; double *VDMOSTcasetpPtr;
double *VDMOSCktTcktTPtr; /* for VcktTemp */ double *VDMOSCktTcktTPtr; /* for VcktTemp */
double *VDMOSCktTtpPtr; double *VDMOSCktTtpPtr;
double *VDMOSTpcktTPtr; double *VDMOSTpcktTPtr;
@ -248,7 +248,7 @@ typedef struct sVDMOSinstance {
#define VDMOSvgs VDMOSstates+ 0 /* gate-source voltage */ #define VDMOSvgs VDMOSstates+ 0 /* gate-source voltage */
#define VDMOSvds VDMOSstates+ 1 /* drain-source voltage */ #define VDMOSvds VDMOSstates+ 1 /* drain-source voltage */
#define VDMOSdelTemp VDMOSstates+ 2 #define VDMOSdelTemp VDMOSstates+ 2 /* thermal voltage over rth0 */
#define VDMOScapgs VDMOSstates+3 /* gate-source capacitor value */ #define VDMOScapgs VDMOSstates+3 /* gate-source capacitor value */
#define VDMOSqgs VDMOSstates+ 4 /* gate-source capacitor charge */ #define VDMOSqgs VDMOSstates+ 4 /* gate-source capacitor charge */
@ -261,14 +261,17 @@ typedef struct sVDMOSinstance {
#define VDIOvoltage VDMOSstates+ 9 #define VDIOvoltage VDMOSstates+ 9
#define VDIOcurrent VDMOSstates+ 10 #define VDIOcurrent VDMOSstates+ 10
#define VDIOconduct VDMOSstates+ 11 #define VDIOconduct VDMOSstates+ 11
#define VDIOcapCharge VDMOSstates+ 12 #define VDIOcapCharge VDMOSstates+ 12
#define VDIOcapCurrent VDMOSstates+ 13 #define VDIOcapCurrent VDMOSstates+ 13
#define VDMOScapth VDMOSstates+ 14 /* thermal capacitor value */ #define VDMOScapth VDMOSstates+ 14 /* thermal capacitor value */
#define VDMOSqth VDMOSstates+ 15 /* thermal capacitor charge */ #define VDMOSqth VDMOSstates+ 15 /* thermal capacitor charge */
#define VDMOScqth VDMOSstates+ 16 /* thermal capacitor current */ #define VDMOScqth VDMOSstates+ 16 /* thermal capacitor current */
#define VDMOSnumStates 17 #define VDIOdIdio_dT VDMOSstates+ 17
#define VDMOSnumStates 18
/* per model data */ /* per model data */
@ -428,9 +431,7 @@ typedef struct sVDMOSmodel { /* model structure for a resistor */
/* device parameters */ /* device parameters */
enum { enum {
VDMOS_W = 1, VDMOS_OFF = 1,
VDMOS_L,
VDMOS_OFF,
VDMOS_IC, VDMOS_IC,
VDMOS_IC_VDS, VDMOS_IC_VDS,
VDMOS_IC_VGS, VDMOS_IC_VGS,

3
src/spicelib/devices/vdmos/vdmosdset.c
View File

@ -53,8 +53,7 @@ VDMOSdSetup(GENmodel *inModel, CKTcircuit *ckt)
Beta = here->VDMOStTransconductance; Beta = here->VDMOStTransconductance;
OxideCap = model->VDMOSoxideCapFactor * here->VDMOSl * OxideCap = model->VDMOSoxideCapFactor * here->VDMOSm;
here->VDMOSm * here->VDMOSw;
vgs = model->VDMOStype * ( vgs = model->VDMOStype * (
*(ckt->CKTrhsOld+here->VDMOSgNode) - *(ckt->CKTrhsOld+here->VDMOSgNode) -

108
src/spicelib/devices/vdmos/vdmosload.c
View File

@ -88,7 +88,7 @@ VDMOSload(GENmodel *inModel, CKTcircuit *ckt)
register int selfheat; register int selfheat;
double rd0T, rd1T, dBeta_dT, dIds_dT; double rd0T, rd1T, dBeta_dT, dIds_dT;
double deldelTemp, delTemp, delTemp1, Temp, Vds, Vgs; double deldelTemp=0.0, delTemp, delTemp1, Temp, Vds, Vgs;
double ceqqth=0.0; double ceqqth=0.0;
double GmT, gTtg, gTtdp, gTtt, gTtsp, gcTt=0.0; double GmT, gTtg, gTtdp, gTtt, gTtsp, gcTt=0.0;
@ -172,7 +172,7 @@ VDMOSload(GENmodel *inModel, CKTcircuit *ckt)
*(ckt->CKTstate0 + here->VDMOSdelTemp) = *(ckt->CKTstate0 + here->VDMOSdelTemp) =
*(ckt->CKTstate1 + here->VDMOSdelTemp); *(ckt->CKTstate1 + here->VDMOSdelTemp);
delTemp = (1 + xfact)* (*(ckt->CKTstate1 + here->VDMOSdelTemp)) delTemp = (1 + xfact)* (*(ckt->CKTstate1 + here->VDMOSdelTemp))
- (xfact * (*(ckt->CKTstate2 + here->VDMOSdelTemp))); - (xfact * (*(ckt->CKTstate2 + here->VDMOSdelTemp)));
} }
else else
{ {
@ -557,10 +557,10 @@ bypass:
*(ckt->CKTstate0 + here->VDMOSqgd); *(ckt->CKTstate0 + here->VDMOSqgd);
if (selfheat) if (selfheat)
{ {
error = NIintegrate(ckt, &gcTt, &ceqqth, 0.0, here->VDMOSqth); error = NIintegrate(ckt, &gcTt, &ceqqth, capth, here->VDMOSqth);
if (error) return(error); if (error) return(error);
gcTt = model->VDMOScthj * ckt->CKTag[0]; ceqqth = ceqqth - gcTt*delTemp + ckt->CKTag[0] *
ceqqth = *(ckt->CKTstate0 + here->VDMOScqth) - gcTt * delTemp; *(ckt->CKTstate0 + here->VDMOSqth);
} }
} }
@ -608,8 +608,11 @@ bypass:
if (selfheat) { if (selfheat) {
*(ckt->CKTrhs + here->VDMOSdNodePrime) += GmT * delTemp; *(ckt->CKTrhs + here->VDMOSdNodePrime) += GmT * delTemp;
*(ckt->CKTrhs + here->VDMOSsNodePrime) += -GmT * delTemp; *(ckt->CKTrhs + here->VDMOSsNodePrime) += -GmT * delTemp;
*(ckt->CKTrhs + here->VDMOStempNode) -= here->VDMOScth + ceqqth; /* MOS dissipated power + Cthj current */ *(ckt->CKTrhs + here->VDMOStempNode) -= here->VDMOScth + ceqqth; /* MOS dissipated power + Cthj current */
*(ckt->CKTrhs + here->VDMOSvcktTbranch) = ckt->CKTtemp-CONSTCtoK; /* ckt temperature */ double vCktTemp = (ckt->CKTtemp-CONSTCtoK); /* ckt temperature */
if (ckt->CKTmode & MODETRANOP)
vCktTemp *= ckt->CKTsrcFact;
*(ckt->CKTrhs + here->VDMOSvcktTbranch)+= vCktTemp;
} }
/* /*
@ -646,7 +649,7 @@ bypass:
if (selfheat) if (selfheat)
{ {
(*(here->VDMOSDPtempPtr) += GmT); (*(here->VDMOSDPtempPtr) += GmT);
(*(here->VDMOSSPtempPtr) += -GmT); (*(here->VDMOSSPtempPtr) += -GmT);
(*(here->VDMOSGPtempPtr) += 0.0); (*(here->VDMOSGPtempPtr) += 0.0);
(*(here->VDMOSTemptempPtr) += gTtt + 1/model->VDMOSrthjc + gcTt); (*(here->VDMOSTemptempPtr) += gTtt + 1/model->VDMOSrthjc + gcTt);
@ -667,15 +670,17 @@ bypass:
* Delivers reverse conduction and forward breakdown * Delivers reverse conduction and forward breakdown
* of VDMOS transistor * of VDMOS transistor
*/ */
double vd, cd;
double vd; /* current diode voltage */
double vte; double vte;
double vtebrk, vbrknp; double vtebrk, vbrknp;
double cd, cdb, csat, cdeq; double cdb, csat, cdeq;
double capd; double capd;
double gd, gdb, gspr; double gd, gdb, gspr;
double delvd; /* change in diode voltage temporary */ double delvd; /* change in diode voltage temporary */
double evrev; double evrev;
double Ith=0.0, dIth_dT=0.0;
double dIdio_dT=0.0, dIth_dVdio=0.0;
double arg1, darg1_dT, arg2, darg2_dT, csat_dT;
#ifndef NOBYPASS #ifndef NOBYPASS
double tol; /* temporary for tolerance calculations */ double tol; /* temporary for tolerance calculations */
#endif #endif
@ -684,8 +689,8 @@ bypass:
cdb = 0.0; cdb = 0.0;
gd = 0.0; gd = 0.0;
gdb = 0.0; gdb = 0.0;
csat = here->VDIOtSatCur;
gspr = here->VDIOtConductance; gspr = here->VDIOtConductance;
vt = CONSTKoverQ * Temp; vt = CONSTKoverQ * Temp;
vte = model->VDMOSn * vt; vte = model->VDMOSn * vt;
vtebrk = model->VDIObrkdEmissionCoeff * vt; vtebrk = model->VDIObrkdEmissionCoeff * vt;
@ -711,6 +716,8 @@ bypass:
*(ckt->CKTstate1 + here->VDIOcurrent); *(ckt->CKTstate1 + here->VDIOcurrent);
*(ckt->CKTstate0 + here->VDIOconduct) = *(ckt->CKTstate0 + here->VDIOconduct) =
*(ckt->CKTstate1 + here->VDIOconduct); *(ckt->CKTstate1 + here->VDIOconduct);
*(ckt->CKTstate0 + here->VDIOdIdio_dT) =
*(ckt->CKTstate1 + here->VDIOdIdio_dT);
} else { } else {
#endif /* PREDICTOR */ #endif /* PREDICTOR */
vd = model->VDMOStype * (*(ckt->CKTrhsOld + here->VDIOposPrimeNode) - vd = model->VDMOStype * (*(ckt->CKTrhsOld + here->VDIOposPrimeNode) -
@ -720,7 +727,8 @@ bypass:
#endif /* PREDICTOR */ #endif /* PREDICTOR */
delvd = vd - *(ckt->CKTstate0 + here->VDIOvoltage); delvd = vd - *(ckt->CKTstate0 + here->VDIOvoltage);
cdhat = *(ckt->CKTstate0 + here->VDIOcurrent) + cdhat = *(ckt->CKTstate0 + here->VDIOcurrent) +
*(ckt->CKTstate0 + here->VDIOconduct) * delvd; *(ckt->CKTstate0 + here->VDIOconduct) * delvd +
*(ckt->CKTstate0 + here->VDIOdIdio_dT) * deldelTemp;
/* /*
* bypass if solution has not changed * bypass if solution has not changed
*/ */
@ -734,10 +742,16 @@ bypass:
ckt->CKTabstol; ckt->CKTabstol;
if (fabs(cdhat - *(ckt->CKTstate0 + here->VDIOcurrent)) if (fabs(cdhat - *(ckt->CKTstate0 + here->VDIOcurrent))
< tol) { < tol) {
vd = *(ckt->CKTstate0 + here->VDIOvoltage); if ((here->VDMOStempNode == 0) ||
cd = *(ckt->CKTstate0 + here->VDIOcurrent); (fabs(deldelTemp) < (ckt->CKTreltol * MAX(fabs(delTemp),
gd = *(ckt->CKTstate0 + here->VDIOconduct); fabs(*(ckt->CKTstate0+here->VDMOSdelTemp)))+
goto load; ckt->CKTvoltTol*1e4))) {
vd = *(ckt->CKTstate0 + here->VDIOvoltage);
cd = *(ckt->CKTstate0 + here->VDIOcurrent);
gd = *(ckt->CKTstate0 + here->VDIOconduct);
dIdio_dT= *(ckt->CKTstate0 + here->VDIOdIdio_dT);
goto load;
}
} }
} }
} }
@ -759,38 +773,53 @@ bypass:
vte, here->VDIOtVcrit, &Check_dio); vte, here->VDIOtVcrit, &Check_dio);
} }
} }
/*
* temperature dependent diode saturation current and derivative
*/
arg1 = ((Temp / model->VDMOStnom) - 1) * model->VDMOSeg / (model->VDMOSn*vt);
darg1_dT = model->VDMOSeg / (vte*model->VDMOStnom)
- model->VDMOSeg*(Temp/model->VDMOStnom -1)/(vte*Temp);
arg2 = model->VDMOSxti / model->VDMOSn * log(Temp / model->VDMOStnom);
darg2_dT = model->VDMOSxti / model->VDMOSn / Temp;
csat = here->VDMOSm * model->VDIOjctSatCur * exp(arg1 + arg2);
csat_dT = here->VDMOSm * model->VDIOjctSatCur * exp(arg1 + arg2) * (darg1_dT + darg2_dT);
/* /*
* compute dc current and derivatives * compute dc current and derivatives
*/ */
if (vd >= -3 * vte) { /* bottom current forward */ if (vd >= -3 * vte) { /* forward current */
double evd; double evd;
evd = exp(vd / vte); evd = exp(vd / vte);
cdb = csat*(evd - 1); cdb = csat*(evd - 1);
dIdio_dT = csat_dT * (evd - 1) - csat * vd * evd / (vte * Temp);
gdb = csat*evd / vte; gdb = csat*evd / vte;
} else if ((!(model->VDMOSbvGiven)) || } else if ((!(model->VDMOSbvGiven)) ||
vd >= -vbrknp) { /* reverse */ vd >= -vbrknp) { /* reverse */
double arg3, darg3_dT;
arg = 3 * vte / (vd*CONSTe); arg = 3 * vte / (vd*CONSTe);
arg = arg * arg * arg; arg3 = arg * arg * arg;
cdb = -csat*(1 + arg); darg3_dT = 3 * arg3 / Temp;
cdb = -csat*(1 + arg3);
dIdio_dT = -csat_dT * (arg3 + 1) - csat * darg3_dT;
gdb = csat * 3 * arg / vd; gdb = csat * 3 * arg / vd;
} else { /* breakdown */ } else { /* breakdown */
evrev = exp(-(vbrknp + vd) / vtebrk); evrev = exp(-(vbrknp + vd) / vtebrk);
cdb = -csat*evrev; cdb = -csat*evrev;
dIdio_dT = csat * (-vbrknp-vd) * evrev / vtebrk / Temp - csat_dT * evrev;
gdb = csat*evrev / vtebrk; gdb = csat*evrev / vtebrk;
} }
cd = cdb + ckt->CKTgmin*vd;
cd = cdb; gd = gdb + ckt->CKTgmin;
gd = gdb;
gd = gd + ckt->CKTgmin;
cd = cd + ckt->CKTgmin*vd;
if ((ckt->CKTmode & (MODEDCTRANCURVE | MODETRAN | MODEAC | MODEINITSMSIG)) || if ((ckt->CKTmode & (MODEDCTRANCURVE | MODETRAN | MODEAC | MODEINITSMSIG)) ||
((ckt->CKTmode & MODETRANOP) && (ckt->CKTmode & MODEUIC))) { ((ckt->CKTmode & MODETRANOP) && (ckt->CKTmode & MODEUIC))) {
@ -812,7 +841,7 @@ bypass:
} }
diffcharge = here->VDIOtTransitTime*cdb; diffcharge = here->VDIOtTransitTime*cdb;
*(ckt->CKTstate0 + here->VDIOcapCharge) = *(ckt->CKTstate0 + here->VDIOcapCharge) =
diffcharge + deplcharge; diffcharge + deplcharge;
diffcap = here->VDIOtTransitTime*gdb; diffcap = here->VDIOtTransitTime*gdb;
capd = diffcap + deplcap; capd = diffcap + deplcap;
@ -855,16 +884,22 @@ bypass:
if ((Check_th == 1) || (Check_dio == 1)) { if ((Check_th == 1) || (Check_dio == 1)) {
ckt->CKTnoncon++; ckt->CKTnoncon++;
ckt->CKTtroubleElt = (GENinstance *)here; ckt->CKTtroubleElt = (GENinstance *) here;
} }
*(ckt->CKTstate0 + here->VDIOvoltage) = vd; *(ckt->CKTstate0 + here->VDIOvoltage) = vd;
*(ckt->CKTstate0 + here->VDIOcurrent) = cd; *(ckt->CKTstate0 + here->VDIOcurrent) = cd;
*(ckt->CKTstate0 + here->VDIOconduct) = gd; *(ckt->CKTstate0 + here->VDIOconduct) = gd;
*(ckt->CKTstate0 + here->VDIOdIdio_dT) = dIdio_dT;
#ifndef NOBYPASS #ifndef NOBYPASS
load: load:
#endif #endif
if (selfheat) {
Ith = vd*cd;
dIth_dVdio = cd + vd*gd;
dIth_dT = dIdio_dT*vd;
}
/* /*
* load current vector * load current vector
*/ */
@ -876,7 +911,11 @@ load:
*(ckt->CKTrhs + here->VDMOSdNode) -= cdeq; *(ckt->CKTrhs + here->VDMOSdNode) -= cdeq;
*(ckt->CKTrhs + here->VDIOposPrimeNode) += cdeq; *(ckt->CKTrhs + here->VDIOposPrimeNode) += cdeq;
} }
if (selfheat) {
*(ckt->CKTrhs + here->VDMOSdNode) += dIdio_dT*delTemp;
*(ckt->CKTrhs + here->VDIOposPrimeNode) -= dIdio_dT*delTemp;
*(ckt->CKTrhs + here->VDMOStempNode) += Ith - dIth_dVdio*vd - dIth_dT*delTemp; /* Diode dissipated power */
}
/* /*
* load matrix * load matrix
*/ */
@ -887,6 +926,13 @@ load:
*(here->VDIODrpPtr) -= gd; *(here->VDIODrpPtr) -= gd;
*(here->VDIORPsPtr) -= gspr; *(here->VDIORPsPtr) -= gspr;
*(here->VDIORPdPtr) -= gd; *(here->VDIORPdPtr) -= gd;
if (selfheat) {
(*(here->VDMOSTemptempPtr) += dIth_dT);
(*(here->VDIOTempposPrimePtr) += -dIth_dVdio);
(*(here->VDIOTempnegPtr) += dIth_dVdio);
(*(here->VDIOPosPrimetempPtr) += -dIdio_dT);
(*(here->VDIONegtempPtr) += dIdio_dT);
}
} }
} }
return(OK); return(OK);

5
src/spicelib/devices/vdmos/vdmosnoi.c
View File

@ -113,9 +113,8 @@ VDMOSnoise (int mode, int operation, GENmodel *genmodel, CKTcircuit *ckt,
noizDens[VDMOSFLNOIZ] *= model->VDMOSfNcoef * noizDens[VDMOSFLNOIZ] *= model->VDMOSfNcoef *
exp(model->VDMOSfNexp * exp(model->VDMOSfNexp *
log(MAX(fabs(inst->VDMOScd),N_MINLOG))) / log(MAX(fabs(inst->VDMOScd),N_MINLOG))) /
(data->freq * inst->VDMOSw * (data->freq *
inst->VDMOSm * inst->VDMOSm * coxSquared);
inst->VDMOSl * coxSquared);
lnNdens[VDMOSFLNOIZ] = lnNdens[VDMOSFLNOIZ] =
log(MAX(noizDens[VDMOSFLNOIZ],N_MINLOG)); log(MAX(noizDens[VDMOSFLNOIZ],N_MINLOG));

8
src/spicelib/devices/vdmos/vdmospar.c
View File

@ -42,14 +42,6 @@ VDMOSparam(int param, IFvalue *value, GENinstance *inst, IFvalue *select)
here->VDMOSm = value->rValue; here->VDMOSm = value->rValue;
here->VDMOSmGiven = TRUE; here->VDMOSmGiven = TRUE;
break; break;
case VDMOS_W:
here->VDMOSw = value->rValue * scale;
here->VDMOSwGiven = TRUE;
break;
case VDMOS_L:
here->VDMOSl = value->rValue * scale;
here->VDMOSlGiven = TRUE;
break;
case VDMOS_OFF: case VDMOS_OFF:
here->VDMOSoff = (value->iValue != 0); here->VDMOSoff = (value->iValue != 0);
break; break;

19
src/spicelib/devices/vdmos/vdmosset.c
View File

@ -212,12 +212,6 @@ VDMOSsetup(SMPmatrix *matrix, GENmodel *inModel, CKTcircuit *ckt,
if(!here->VDMOSmGiven) { if(!here->VDMOSmGiven) {
here->VDMOSm = 1; here->VDMOSm = 1;
} }
if(!here->VDMOSlGiven) {
here->VDMOSl = 1;
}
if(!here->VDMOSwGiven) {
here->VDMOSw = 1;
}
if (model->VDMOSdrainResistance != 0) { if (model->VDMOSdrainResistance != 0) {
here->VDMOSdrainConductance = here->VDMOSm / model->VDMOSdrainResistance; here->VDMOSdrainConductance = here->VDMOSm / model->VDMOSdrainResistance;
} else { } else {
@ -242,7 +236,7 @@ VDMOSsetup(SMPmatrix *matrix, GENmodel *inModel, CKTcircuit *ckt,
} else { } else {
here->VDMOSdsConductance = 1e-15; here->VDMOSdsConductance = 1e-15;
} }
if (model->VDIOresistance > 10e-03) { if (model->VDIOresistance > 10e-3) {
here->VDIOconductance = here->VDMOSm / model->VDIOresistance; here->VDIOconductance = here->VDMOSm / model->VDIOresistance;
} else { } else {
here->VDIOconductance = here->VDMOSm / 10e-03; here->VDIOconductance = here->VDMOSm / 10e-03;
@ -375,7 +369,7 @@ do { if((here->ptr = SMPmakeElt(matrix, here->first, here->second)) == NULL){\
} } while(0) } } while(0)
if ((here->VDMOSthermalGiven) && (model->VDMOSrthjcGiven)) { if ((here->VDMOSthermalGiven) && (model->VDMOSrthjcGiven)) {
TSTALLOC(VDMOSTemptempPtr, VDMOStempNode, VDMOStempNode); TSTALLOC(VDMOSTemptempPtr, VDMOStempNode, VDMOStempNode); /* Transistor thermal contribution */
TSTALLOC(VDMOSTempdpPtr, VDMOStempNode, VDMOSdNodePrime); TSTALLOC(VDMOSTempdpPtr, VDMOStempNode, VDMOSdNodePrime);
TSTALLOC(VDMOSTempspPtr, VDMOStempNode, VDMOSsNodePrime); TSTALLOC(VDMOSTempspPtr, VDMOStempNode, VDMOSsNodePrime);
TSTALLOC(VDMOSTempgpPtr, VDMOStempNode, VDMOSgNodePrime); TSTALLOC(VDMOSTempgpPtr, VDMOStempNode, VDMOSgNodePrime);
@ -383,10 +377,15 @@ do { if((here->ptr = SMPmakeElt(matrix, here->first, here->second)) == NULL){\
TSTALLOC(VDMOSDPtempPtr, VDMOSdNodePrime, VDMOStempNode); TSTALLOC(VDMOSDPtempPtr, VDMOSdNodePrime, VDMOStempNode);
TSTALLOC(VDMOSSPtempPtr, VDMOSsNodePrime, VDMOStempNode); TSTALLOC(VDMOSSPtempPtr, VDMOSsNodePrime, VDMOStempNode);
TSTALLOC(VDMOSTcasetcasePtr, VDMOStcaseNode, VDMOStcaseNode); /* Rthjc between tj and tcase*/ TSTALLOC(VDIOTempposPrimePtr, VDMOStempNode, VDIOposPrimeNode);/* Diode thermal contribution */
TSTALLOC(VDIOTempnegPtr, VDMOStempNode, VDMOSdNode);
TSTALLOC(VDIOPosPrimetempPtr, VDIOposPrimeNode, VDMOStempNode);
TSTALLOC(VDIONegtempPtr, VDMOSdNode, VDMOStempNode);
TSTALLOC(VDMOSTcasetcasePtr, VDMOStcaseNode, VDMOStcaseNode); /* Rthjc between tj and tcase*/
TSTALLOC(VDMOSTcasetempPtr, VDMOStcaseNode, VDMOStempNode); TSTALLOC(VDMOSTcasetempPtr, VDMOStcaseNode, VDMOStempNode);
TSTALLOC(VDMOSTemptcasePtr, VDMOStempNode, VDMOStcaseNode); TSTALLOC(VDMOSTemptcasePtr, VDMOStempNode, VDMOStcaseNode);
TSTALLOC(VDMOSTptpPtr, VDMOStNodePrime, VDMOStNodePrime); /* Rthca between tcase and Vsrc */ TSTALLOC(VDMOSTptpPtr, VDMOStNodePrime, VDMOStNodePrime); /* Rthca between tcase and Vsrc */
TSTALLOC(VDMOSTptcasePtr, VDMOStNodePrime, VDMOStempNode); TSTALLOC(VDMOSTptcasePtr, VDMOStNodePrime, VDMOStempNode);
TSTALLOC(VDMOSTcasetpPtr, VDMOStempNode, VDMOStNodePrime); TSTALLOC(VDMOSTcasetpPtr, VDMOStempNode, VDMOStNodePrime);
TSTALLOC(VDMOSCktTcktTPtr, VDMOSvcktTbranch, VDMOSvcktTbranch); /* Vsrc=cktTemp to gnd */ TSTALLOC(VDMOSCktTcktTPtr, VDMOSvcktTbranch, VDMOSvcktTbranch); /* Vsrc=cktTemp to gnd */

3
src/spicelib/devices/vdmos/vdmostemp.c
View File

@ -93,8 +93,7 @@ VDMOStemp(GENmodel *inModel, CKTcircuit *ckt)
/* vdmos temperature model */ /* vdmos temperature model */
ratio = here->VDMOStemp/model->VDMOStnom; ratio = here->VDMOStemp/model->VDMOStnom;
here->VDMOStTransconductance = model->VDMOStransconductance here->VDMOStTransconductance = model->VDMOStransconductance
* here->VDMOSm * here->VDMOSw / here->VDMOSl * here->VDMOSm * pow(ratio, model->VDMOSmu);
* pow(ratio, model->VDMOSmu);
here->VDMOStVth = model->VDMOSvth0 - model->VDMOStype * model->VDMOStcvth * dt; here->VDMOStVth = model->VDMOSvth0 - model->VDMOStype * model->VDMOStcvth * dt;