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Spice model for TL431

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amtalan

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tl431 spice model

Does someone have a SPICE model for the TL431/LM431/KA431 shunt regulator?

Thanks.
 

S

sick_man

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lm431 spice model

h*tp://w8w.fairchildsemi.com/models/spice/

try here
 

S

sick_man

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tl431 spice

this is how i got it


i open a new browser

go to google.com

and type lm431 spice model

sometimes caps and space between lm and the number etc make a big dif too what reply you get from an engine

google is the best
the rest use it as an engine hehehe
 

amtalan

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tl431 pspice

Hi, I found it in a library I discharged form TI ages ago (and now not available, I'm thinking to crate a public depository for those libraries, maybe on the FM...).

Thanks for your effort.

P.S. I agre in your opinion on Google.
 

Sonic

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lm431 spice

Hi,I need the TL431 Spice model too.
can you please post in FM or send to me as PM.

Thanks a lot!

Sonic
 

javier

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tl431 pspice model

hi guys,here's the model for TL431 from Intusoft:

*SRC=TL431;TL431;Voltage Ref.;;
*SYM=TL431
.SUBCKT TL431 7 6 11
* K A FDBK
.MODEL DCLAMP D (IS=13.5N RS=25M N=1.59
+ CJO=45P VJ=.75 M=.302 TT=50.4N BV=34V IBV=1MA)
V1 1 6 2.495
R1 6 2 15.6
C1 2 6 .5U
R2 2 3 100
C2 3 4 .08U
R3 4 6 10
G2 6 8 3 6 1.73
D1 5 8 DCLAMP
D2 7 8 DCLAMP
V4 5 6 2
G1 6 2 1 11 0.11
.ENDS
 

spyeagle

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Re: tl431 pspice model

I find this post because I was researching a spice model for TL431. The model's Javier from Intusoft, it's not a good model because it can't simulate a shunt regulator for example.
But I find here a good spice model developed by Eugene Dvoskin.

I simulated a shunt regulator in LTspice with Eugene Dvoskin's Model. And it was in harmony with the theory (VZ = VREF (1 + R1/R2) + IREF*R1).

I give you the .spice
Code:
.subckt TL431ED K A ADJ
Q1 K ADJ N005 0 QN_ED
Q7 N003 N003 N001 0 QP_ED
D1 A N004 D_ED
Q8 N004 N003 N002 0 QP_ED
R4 N005 N009 3.28k
R2 N009 N012 2.4k
R3 N009 N010 7.2k
R1 N014 A 800
R5 N006 N011 4k
R7 K N001 800
R8 K N002 800
R6 N013 N012 1k
R9 N008 N007 150
R10 N008 A 10k
D2 A K D_ED
C1 K N004 10p
C2 N010 N011 20p
Q2 N012 N012 A 0 QN_ED area=1.2
Q3 N010 N012 N014 0 QN_ED area=2.2
Q5 N011 N010 A 0 QN_ED
Q9 K N004 N007 0 QN_ED
Q10 K N008 A 0 QN_ED area=5
Q4 N003 N005 N006 0 QN_ED
Q6 N004 N013 A 0 QN_ED area=0.5
Q11 N004 N004 ADJ 0 QN_ED
.model D D
.lib C:\PROGRA~1\LTC\LTSPIC~1\lib\cmp\standard.dio
.model NPN NPN
.model PNP PNP
.lib C:\PROGRA~1\LTC\LTSPIC~1\lib\cmp\standard.bjt
.model QN_ED NPN(BF=140 Cje=1p Cjc=2p Rb=40 VAF=80 VAR=50 KF=3.2e-16 AF=1)
.model QP_ED PNP(BF=60 Cje=1p Cjc=3p Rb=80 VAF=70 VAR=40)
.MODEL D_ED D(Rs=5 CJ0=4.0p)
* Model developed by Eugene Dvoskin --> "http://www.audio-perfection.com"  02/05/2012\nThis TL431 model has been developed from schematic in the datasheet\nhttp://www.ti.com/lit/ds/symlink/tl431.pdf\nIt matches most of DC, AC, Transient, Stability and Noise performance of TI TL431\nNo attempts were made to cover Temperature dependences
.backanno
.end
 

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