Circuit Negma

C++, C, VB.NET, PCB, Electronics, Circuit Design

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)
.ENDS

Vin 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)
.ENDS

Vin     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         CURRENT

    Vin         -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-02

          JOB 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)
.ENDS

Vin     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         CURRENT

    Vin         -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-03

          JOB CONCLUDED

****     JOB STATISTICS SUMMARY

  Total job time (using Solver 1)   =         .03

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