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fix Vcrit calculation for coll-subs junction and correct tlev=3 temperature model

This commit is contained in:
dwarning 2021-05-01 19:13:45 +02:00 committed by Holger Vogt
parent b00fa921ac
commit 52f4244345
6 changed files with 35 additions and 2 deletions
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2
src/spicelib/devices/bjt/bjt.c
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@ -221,6 +221,8 @@ IFparm BJTmPTable[] = { /* model parameters */
IOP("tise2", BJT_MOD_TISE2, IF_REAL, "ISE 2. temperature coefficient"),
IOP("tisc1", BJT_MOD_TISC1, IF_REAL, "ISC 1. temperature coefficient"),
IOP("tisc2", BJT_MOD_TISC2, IF_REAL, "ISC 2. temperature coefficient"),
IOP("tiss1", BJT_MOD_TISS1, IF_REAL, "ISS 1. temperature coefficient"),
IOP("tiss2", BJT_MOD_TISS2, IF_REAL, "ISS 2. temperature coefficient"),
IOP("quasimod", BJT_MOD_QUASIMOD, IF_INTEGER, "Temperature equation selector"),
IOP("vg", BJT_MOD_EGQS, IF_REAL, "Energy gap for QS temp. dependency"),
IOP("cn", BJT_MOD_XRCI, IF_REAL, "Temperature exponent of RCI"),

6
src/spicelib/devices/bjt/bjtdefs.h
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@ -489,6 +489,8 @@ typedef struct sBJTmodel { /* model structure for a bjt */
double BJTtise2;
double BJTtisc1;
double BJTtisc2;
double BJTtiss1;
double BJTtiss2;
int BJTquasimod;
double BJTenergyGapQS;
double BJTtempExpRCI;
@ -606,6 +608,8 @@ typedef struct sBJTmodel { /* model structure for a bjt */
unsigned BJTtise2Given : 1;
unsigned BJTtisc1Given : 1;
unsigned BJTtisc2Given : 1;
unsigned BJTtiss1Given : 1;
unsigned BJTtiss2Given : 1;
unsigned BJTquasimodGiven : 1;
unsigned BJTenergyGapQSGiven : 1;
unsigned BJTtempExpRCIGiven : 1;
@ -757,6 +761,8 @@ enum {
BJT_MOD_TISE2,
BJT_MOD_TISC1,
BJT_MOD_TISC2,
BJT_MOD_TISS1,
BJT_MOD_TISS2,
BJT_MOD_QUASIMOD,
BJT_MOD_EGQS,
BJT_MOD_XRCI,

6
src/spicelib/devices/bjt/bjtmask.c
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@ -390,6 +390,12 @@ BJTmAsk(CKTcircuit *ckt, GENmodel *instPtr, int which, IFvalue *value)
case BJT_MOD_TISC2:
value->rValue = here->BJTtisc2;
return(OK);
case BJT_MOD_TISS1:
value->rValue = here->BJTtiss1;
return(OK);
case BJT_MOD_TISS2:
value->rValue = here->BJTtiss2;
return(OK);
case BJT_MOD_QUASIMOD:
value->iValue = here->BJTquasimod;
return(OK);

8
src/spicelib/devices/bjt/bjtmpar.c
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@ -470,6 +470,14 @@ BJTmParam(int param, IFvalue *value, GENmodel *inModel)
mods->BJTtisc2 = value->rValue;
mods->BJTtisc2Given = TRUE;
break;
case BJT_MOD_TISS1:
mods->BJTtiss1 = value->rValue;
mods->BJTtiss1Given = TRUE;
break;
case BJT_MOD_TISS2:
mods->BJTtiss2 = value->rValue;
mods->BJTtiss2Given = TRUE;
break;
case BJT_MOD_QUASIMOD:
mods->BJTquasimod = value->iValue;
mods->BJTquasimodGiven = TRUE;

6
src/spicelib/devices/bjt/bjtsetup.c
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@ -335,6 +335,12 @@ BJTsetup(SMPmatrix *matrix, GENmodel *inModel, CKTcircuit *ckt, int *states)
if(!model->BJTtisc2Given) {
model->BJTtisc2 = 0.0;
}
if(!model->BJTtiss1Given) {
model->BJTtiss1 = 0.0;
}
if(!model->BJTtiss2Given) {
model->BJTtiss2 = 0.0;
}
if(!model->BJTquasimodGiven) {
model->BJTquasimod = 0;
}

5
src/spicelib/devices/bjt/bjttemp.c
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@ -175,6 +175,7 @@ BJTtemp(GENmodel *inModel, CKTcircuit *ckt)
here->BJTtSubSatCur = model->BJTsubSatCur * factor;
} else if (model->BJTtlev == 3) {
here->BJTtSatCur = pow(model->BJTsatCur,(1+model->BJTtis1*dt+model->BJTtis2*dt*dt));
here->BJTtSubSatCur = pow(model->BJTsubSatCur,(1+model->BJTtiss1*dt+model->BJTtiss2*dt*dt));
}
if (model->BJTintCollResistGiven) {
@ -273,8 +274,12 @@ BJTtemp(GENmodel *inModel, CKTcircuit *ckt)
(1 - here->BJTtjunctionExpBC);
here->BJTtVcrit = vt *
log(vt / (CONSTroot2*here->BJTtSatCur*here->BJTarea));
if(model->BJTsubSatCurGiven) {
here->BJTtSubVcrit = vt *
log(vt / (CONSTroot2*here->BJTtSubSatCur*here->BJTarea));
} else {
here->BJTtSubVcrit = here->BJTtVcrit;
}
here->BJTtf2 = exp((1 + here->BJTtjunctionExpBE) * xfc);
here->BJTtf3 = 1 - model->BJTdepletionCapCoeff *
(1 + here->BJTtjunctionExpBE);