Unidirectional TVS Circuit Simulation
Posted by Circuit Negma on July 4, 2009
Created By: Hussein Nosair
Schematic:
Pspice Model of Schematic:
*TVS Simulation Circuit
**************************************************
** Littelfuse P4KE12A, TVS, uni-directional **
** **
** ITC, 04/09/05 **
**************************************************
.SUBCKT P4KE24A 1 2
* TERMINALS: A K
Dpri 1 3 Dtvs
Rleak 1 3 13meg
Lind 3 2 2e-15
.MODEL Dtvs D (RS=0.05 N=1.5 IBV=1m BV=24.0 CJO=450p)
.ENDSVin 0 1 24V
Rs 1 2 5
X1 0 2 P4KE24A
RL 2 0 1k.DC Vin 0 100 1
.TRAN 40E-6 3E-3
.PRINT TRAN V(2) I(Rs) I(RL)
.PROBE
.OPTIONS NOPAGE
.END
Pspice Model Results in Normal Operation:
**** 07/04/09 01:14:56 ******* PSpice *********
*TVS Simulation Circuit
**** CIRCUIT DESCRIPTION
******************************************************************************
**************************************************
** Littelfuse P4KE12A, TVS, uni-directional **
** **
** ITC, 04/09/05 **
**************************************************
.SUBCKT P4KE24A 1 2
* TERMINALS: A K
Dpri 1 3 Dtvs
Rleak 1 3 13meg
Lind 3 2 2e-15
.MODEL Dtvs D (RS=0.05 N=1.5 IBV=1m BV=24.0 CJO=450p)
.ENDSVin 1 0 24V
Rs 1 2 5
X1 0 2 P4KE24A
RL 2 0 1k.DC Vin 0 100 1
.TRAN 40E-6 3E-3
.PRINT TRAN V(2) I(Rs) I(RL)
.PROBE
.OPTIONS NOPAGE
.END**** Diode MODEL PARAMETERS
X1.Dtvs
IS 10.000000E-15
N 1.5
BV 24
IBV 1.000000E-03
RS .05
CJO 450.000000E-12**** INITIAL TRANSIENT SOLUTION TEMPERATURE = 27.000 DEG C
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
( 1) 24.0000 ( 2) 23.8810 ( X1.3) 23.8810
VOLTAGE SOURCE CURRENTS
NAME CURRENTVin -2.389E-02
TOTAL POWER DISSIPATION 5.73E-01 WATTS
**** TRANSIENT ANALYSIS TEMPERATURE = 27.000 DEG C
TIME V(2) I(Rs) I(RL)
0.000E+00 2.388E+01 2.389E-02 2.388E-02
4.000E-05 2.388E+01 2.389E-02 2.388E-02
8.000E-05 2.388E+01 2.389E-02 2.388E-02
1.200E-04 2.388E+01 2.389E-02 2.388E-02
1.600E-04 2.388E+01 2.389E-02 2.388E-02
2.000E-04 2.388E+01 2.389E-02 2.388E-02
2.400E-04 2.388E+01 2.389E-02 2.388E-02
2.800E-04 2.388E+01 2.389E-02 2.388E-02
3.200E-04 2.388E+01 2.389E-02 2.388E-02
3.600E-04 2.388E+01 2.389E-02 2.388E-02
4.000E-04 2.388E+01 2.389E-02 2.388E-02
4.400E-04 2.388E+01 2.389E-02 2.388E-02
4.800E-04 2.388E+01 2.389E-02 2.388E-02
5.200E-04 2.388E+01 2.389E-02 2.388E-02
5.600E-04 2.388E+01 2.389E-02 2.388E-02
6.000E-04 2.388E+01 2.389E-02 2.388E-02
6.400E-04 2.388E+01 2.389E-02 2.388E-02
6.800E-04 2.388E+01 2.389E-02 2.388E-02
7.200E-04 2.388E+01 2.389E-02 2.388E-02
7.600E-04 2.388E+01 2.389E-02 2.388E-02
8.000E-04 2.388E+01 2.389E-02 2.388E-02
8.400E-04 2.388E+01 2.389E-02 2.388E-02
8.800E-04 2.388E+01 2.389E-02 2.388E-02
9.200E-04 2.388E+01 2.389E-02 2.388E-02
9.600E-04 2.388E+01 2.389E-02 2.388E-02
1.000E-03 2.388E+01 2.389E-02 2.388E-02
1.040E-03 2.388E+01 2.389E-02 2.388E-02
1.080E-03 2.388E+01 2.389E-02 2.388E-02
1.120E-03 2.388E+01 2.389E-02 2.388E-02
1.160E-03 2.388E+01 2.389E-02 2.388E-02
1.200E-03 2.388E+01 2.389E-02 2.388E-02
1.240E-03 2.388E+01 2.389E-02 2.388E-02
1.280E-03 2.388E+01 2.389E-02 2.388E-02
1.320E-03 2.388E+01 2.389E-02 2.388E-02
1.360E-03 2.388E+01 2.389E-02 2.388E-02
1.400E-03 2.388E+01 2.389E-02 2.388E-02
1.440E-03 2.388E+01 2.389E-02 2.388E-02
1.480E-03 2.388E+01 2.389E-02 2.388E-02
1.520E-03 2.388E+01 2.389E-02 2.388E-02
1.560E-03 2.388E+01 2.389E-02 2.388E-02
1.600E-03 2.388E+01 2.389E-02 2.388E-02
1.640E-03 2.388E+01 2.389E-02 2.388E-02
1.680E-03 2.388E+01 2.389E-02 2.388E-02
1.720E-03 2.388E+01 2.389E-02 2.388E-02
1.760E-03 2.388E+01 2.389E-02 2.388E-02
1.800E-03 2.388E+01 2.389E-02 2.388E-02
1.840E-03 2.388E+01 2.389E-02 2.388E-02
1.880E-03 2.388E+01 2.389E-02 2.388E-02
1.920E-03 2.388E+01 2.389E-02 2.388E-02
1.960E-03 2.388E+01 2.389E-02 2.388E-02
2.000E-03 2.388E+01 2.389E-02 2.388E-02
2.040E-03 2.388E+01 2.389E-02 2.388E-02
2.080E-03 2.388E+01 2.389E-02 2.388E-02
2.120E-03 2.388E+01 2.389E-02 2.388E-02
2.160E-03 2.388E+01 2.389E-02 2.388E-02
2.200E-03 2.388E+01 2.389E-02 2.388E-02
2.240E-03 2.388E+01 2.389E-02 2.388E-02
2.280E-03 2.388E+01 2.389E-02 2.388E-02
2.320E-03 2.388E+01 2.389E-02 2.388E-02
2.360E-03 2.388E+01 2.389E-02 2.388E-02
2.400E-03 2.388E+01 2.389E-02 2.388E-02
2.440E-03 2.388E+01 2.389E-02 2.388E-02
2.480E-03 2.388E+01 2.389E-02 2.388E-02
2.520E-03 2.388E+01 2.389E-02 2.388E-02
2.560E-03 2.388E+01 2.389E-02 2.388E-02
2.600E-03 2.388E+01 2.389E-02 2.388E-02
2.640E-03 2.388E+01 2.389E-02 2.388E-02
2.680E-03 2.388E+01 2.389E-02 2.388E-02
2.720E-03 2.388E+01 2.389E-02 2.388E-02
2.760E-03 2.388E+01 2.389E-02 2.388E-02
2.800E-03 2.388E+01 2.389E-02 2.388E-02
2.840E-03 2.388E+01 2.389E-02 2.388E-02
2.880E-03 2.388E+01 2.389E-02 2.388E-02
2.920E-03 2.388E+01 2.389E-02 2.388E-02
2.960E-03 2.388E+01 2.389E-02 2.388E-02
3.000E-03 2.388E+01 2.389E-02 2.388E-02JOB CONCLUDED
**** JOB STATISTICS SUMMARY
Total job time (using Solver 1) = .02
Pspice Model Results in Reversed Polarity of Vin:
**** 07/04/09 01:17:08 ******* PSpice *********
*TVS Simulation Circuit
**** CIRCUIT DESCRIPTION
******************************************************************************
**************************************************
** Littelfuse P4KE12A, TVS, uni-directional **
** **
** ITC, 04/09/05 **
**************************************************
.SUBCKT P4KE24A 1 2
* TERMINALS: A K
Dpri 1 3 Dtvs
Rleak 1 3 13meg
Lind 3 2 2e-15
.MODEL Dtvs D (RS=0.05 N=1.5 IBV=1m BV=24.0 CJO=450p)
.ENDSVin 0 1 24V
Rs 1 2 5
X1 0 2 P4KE24A
RL 2 0 1k.DC Vin 0 100 1
.TRAN 40E-6 3E-3
.PRINT TRAN V(2) I(Rs) I(RL)
.PROBE
.OPTIONS NOPAGE
.END**** Diode MODEL PARAMETERS
X1.Dtvs
IS 10.000000E-15
N 1.5
BV 24
IBV 1.000000E-03
RS .05
CJO 450.000000E-12**** INITIAL TRANSIENT SOLUTION TEMPERATURE = 27.000 DEG C
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
( 1) -24.0000 ( 2) -1.5335 ( X1.3) -1.5335
VOLTAGE SOURCE CURRENTS
NAME CURRENTVin -4.493E+00
TOTAL POWER DISSIPATION 1.08E+02 WATTS
**** TRANSIENT ANALYSIS TEMPERATURE = 27.000 DEG C
TIME V(2) I(Rs) I(RL)
0.000E+00 -1.534E+00 -4.493E+00 -1.534E-03
4.000E-05 -1.534E+00 -4.493E+00 -1.534E-03
8.000E-05 -1.534E+00 -4.493E+00 -1.534E-03
1.200E-04 -1.534E+00 -4.493E+00 -1.534E-03
1.600E-04 -1.534E+00 -4.493E+00 -1.534E-03
2.000E-04 -1.534E+00 -4.493E+00 -1.534E-03
2.400E-04 -1.534E+00 -4.493E+00 -1.534E-03
2.800E-04 -1.534E+00 -4.493E+00 -1.534E-03
3.200E-04 -1.534E+00 -4.493E+00 -1.534E-03
3.600E-04 -1.534E+00 -4.493E+00 -1.534E-03
4.000E-04 -1.534E+00 -4.493E+00 -1.534E-03
4.400E-04 -1.534E+00 -4.493E+00 -1.534E-03
4.800E-04 -1.534E+00 -4.493E+00 -1.534E-03
5.200E-04 -1.534E+00 -4.493E+00 -1.534E-03
5.600E-04 -1.534E+00 -4.493E+00 -1.534E-03
6.000E-04 -1.534E+00 -4.493E+00 -1.534E-03
6.400E-04 -1.534E+00 -4.493E+00 -1.534E-03
6.800E-04 -1.534E+00 -4.493E+00 -1.534E-03
7.200E-04 -1.534E+00 -4.493E+00 -1.534E-03
7.600E-04 -1.534E+00 -4.493E+00 -1.534E-03
8.000E-04 -1.534E+00 -4.493E+00 -1.534E-03
8.400E-04 -1.534E+00 -4.493E+00 -1.534E-03
8.800E-04 -1.534E+00 -4.493E+00 -1.534E-03
9.200E-04 -1.534E+00 -4.493E+00 -1.534E-03
9.600E-04 -1.534E+00 -4.493E+00 -1.534E-03
1.000E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.040E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.080E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.120E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.160E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.200E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.240E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.280E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.320E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.360E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.400E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.440E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.480E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.520E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.560E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.600E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.640E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.680E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.720E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.760E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.800E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.840E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.880E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.920E-03 -1.534E+00 -4.493E+00 -1.534E-03
1.960E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.000E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.040E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.080E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.120E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.160E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.200E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.240E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.280E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.320E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.360E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.400E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.440E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.480E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.520E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.560E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.600E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.640E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.680E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.720E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.760E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.800E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.840E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.880E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.920E-03 -1.534E+00 -4.493E+00 -1.534E-03
2.960E-03 -1.534E+00 -4.493E+00 -1.534E-03
3.000E-03 -1.534E+00 -4.493E+00 -1.534E-03JOB CONCLUDED
**** JOB STATISTICS SUMMARY
Total job time (using Solver 1) = .03
