ZHT431 temperature characteristics

[savaspnr]

Hello,

I want to add temperature characteristics to spice model of ZHT431 shunt regulator. I found a model on web. How add the temperature characteristics to that code down below. ( I mean how the related codes be like )

thank you,

[ZHT431]
*ZETEX ZHT431 Spice Model v1.0 Last Revised 22/7/2005
*
*NOTE: This is a simplified Model. Do not rely on this Model for
*validation of circuit stability. It does not accurately replicate
*stability boundary conditions with additional load capacitance.
*Check stability by normal breadboarding techniques.
*
.SUBCKT ZHT431 1 2 3
*Connections Vz Vref Gnd
*Input current
L2 2 12 2E-9
Rin 12 13 Rmod1 20E6
Cin 12 13 1E-12
D1 13 12 Dmod
D2 12 11 Dmod
*Reference voltage, Voltage dependence
Iref 13 21 2.4985E-3
Rref 21 13 Rmod2 1000
G1 21 13 11 13 1.43E-6
*Gain, time constant and clamp voltage
G2 13 31 12 21 0.004
Rt1 31 13 1E8
Ct1 31 32 800E-12
Rt2 32 13 2000
Ct2 31 33 50E-12
Rt3 33 13 5
D3 31 13 Dmod
D4 13 31 Dmod
*Buffer,Output
G3 13 41 13 31 0.22
L1 1 11 2E-9
Rz 11 42 10
D5 42 41 Dmod
D6 13 41 Dmod
D7 13 11 Dmod
Rx 13 23 0.5
L3 3 23 2E-9
Rq 11 13 Rmod3 74E3
*
.MODEL Rmod1 RES (TC1=2.95E-3 TC2=-5E-7)
.MODEL Rmod2 RES (TC1=8.5E-6 TC2=-3.3E-7)
.MODEL Rmod3 RES (TC1=-2.5E-3 TC2=2E-5)
.MODEL Dmod D IS=1E-14 RS=0.1 BV=22 CJO=0.1E-12
.ENDS ZHT431
*
*$
*

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