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bsim4: reimplement mobility and binning extension

This commit is contained in:
dwarning 2025-09-02 11:15:38 +02:00
parent 82bf2169b1
commit ecac7a07a2
6 changed files with 34 additions and 8 deletions
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3
src/spicelib/devices/bsim4/b4.c
View File

@ -55,9 +55,10 @@ IOP( "rbps", BSIM4_RBPS, IF_REAL , "Body resistance"),
IOP( "rbpd", BSIM4_RBPD, IF_REAL , "Body resistance"),
IOP( "delvto", BSIM4_DELVTO, IF_REAL , "Zero bias threshold voltage variation"),
IOPR("delvt0", BSIM4_DELVTO, IF_REAL , "Zero bias threshold voltage variation"),
IOP( "mulu0", BSIM4_MULU0, IF_REAL, "Low field mobility multiplier"),
IOP( "xgw", BSIM4_XGW, IF_REAL, "Distance from gate contact center to device edge"),
IOP( "ngcon", BSIM4_NGCON, IF_REAL, "Number of gate contacts"),
IOP( "wnflag", BSIM4_WNFLAG, IF_INTEGER, "W/NF device flag for bin selection"),
IOP( "trnqsmod", BSIM4_TRNQSMOD, IF_INTEGER, "Transient NQS model selector"),
IOP( "acnqsmod", BSIM4_ACNQSMOD, IF_INTEGER, "AC NQS model selector"),

6
src/spicelib/devices/bsim4/b4ask.c
View File

@ -129,6 +129,12 @@ BSIM4instance *here = (BSIM4instance*)inst;
case BSIM4_DELVTO:
value->rValue = here->BSIM4delvto;
return(OK);
case BSIM4_MULU0:
value->rValue = here->BSIM4mulu0;
return(OK);
case BSIM4_WNFLAG:
value->iValue = here->BSIM4wnflag;
return(OK);
case BSIM4_XGW:
value->rValue = here->BSIM4xgw;
return(OK);

8
src/spicelib/devices/bsim4/b4par.c
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@ -157,6 +157,14 @@ IFvalue *select)
here->BSIM4delvto = value->rValue;
here->BSIM4delvtoGiven = TRUE;
break;
case BSIM4_MULU0:
here->BSIM4mulu0 = value->rValue;
here->BSIM4mulu0Given = TRUE;
break;
case BSIM4_WNFLAG:
here->BSIM4wnflag = value->iValue;
here->BSIM4wnflagGiven = TRUE;
break;
case BSIM4_XGW:
here->BSIM4xgw = value->rValue;
here->BSIM4xgwGiven = TRUE;

2
src/spicelib/devices/bsim4/b4set.c
View File

@ -2354,6 +2354,8 @@ BSIM4instance **InstArray;
here->BSIM4rbpd = model->BSIM4rbpd;
if (!here->BSIM4delvtoGiven)
here->BSIM4delvto = 0.0;
if (!here->BSIM4mulu0Given)
here->BSIM4mulu0 = 1.0;
if (!here->BSIM4xgwGiven)
here->BSIM4xgw = model->BSIM4xgw;
if (!here->BSIM4ngconGiven)

3
src/spicelib/devices/bsim4/b4temp.c
View File

@ -1768,6 +1768,9 @@ int Fatal_Flag = 0;
here->BSIM4vth0 += here->BSIM4delvto;
here->BSIM4vfb = pParam->BSIM4vfb + model->BSIM4type * here->BSIM4delvto;
/* low field mobility multiplier */
here->BSIM4u0temp = pParam->BSIM4u0temp * here->BSIM4mulu0;
/* Instance variables calculation */
T3 = model->BSIM4type * here->BSIM4vth0
- here->BSIM4vfb - pParam->BSIM4phi;

20
src/spicelib/devices/bsim4/bsim4def.h
View File

@ -117,6 +117,8 @@ typedef struct sBSIM4instance
double BSIM4rbpd;
double BSIM4delvto;
double BSIM4mulu0;
int BSIM4wnflag;
double BSIM4xgw;
double BSIM4ngcon;
@ -310,6 +312,8 @@ typedef struct sBSIM4instance
unsigned BSIM4rbpdGiven :1;
unsigned BSIM4rbpsGiven :1;
unsigned BSIM4delvtoGiven :1;
unsigned BSIM4mulu0Given :1;
unsigned BSIM4wnflagGiven :1;
unsigned BSIM4xgwGiven :1;
unsigned BSIM4ngconGiven :1;
unsigned BSIM4icVDSGiven :1;
@ -2864,14 +2868,16 @@ typedef struct sBSIM4model
#define BSIM4_SCC 36
#define BSIM4_SC 37
#define BSIM4_M 38
#define BSIM4_MULU0 39
#define BSIM4_WNFLAG 40
#define BSIM4_VGSTEFF 40
#define BSIM4_VDSEFF 41
#define BSIM4_CGSO 42
#define BSIM4_CGDO 43
#define BSIM4_CGBO 44
#define BSIM4_WEFF 45
#define BSIM4_LEFF 46
#define BSIM4_VGSTEFF 41
#define BSIM4_VDSEFF 42
#define BSIM4_CGSO 43
#define BSIM4_CGDO 44
#define BSIM4_CGBO 45
#define BSIM4_WEFF 46
#define BSIM4_LEFF 47
/* Global parameters */
#define BSIM4_MOD_TEMPEOT 66