Hello everyone!
I'm new in spice simulation.
I try to simulate and NTC B57164K0221 from EPCOS.
This is the library.

* Typenmodell für K164/220 :
* --------------------------
.SUBCKT K164_220 1 2 PARAMS: TOL=0
X1 1 2 NTC Params:
+ B0=-11.5308432841836
+ B1=3799.92010884369
+ B2=-145739.497346467
+ B3=16270237.2871899
+ B4=-1480016638.82789
+ R25=220
+ T={1+TOL/100}

+ CTH=0.136 GTH0=0.0074837 GTH1=4.701E-6 TK=273.15
.ENDS

I use LTspice and I receive an error.(I attached an .png file with the error)
Any idea ?

 

hi Dragos,

This is a clip from the lib file attached.
* Typenmodell für K164/220 :
* --------------------------
.SUBCKT K164_220 1 2 3 PARAMS: TOL=0
X1 1 2 3 NTC Params:
+ B0=-11.5308432841836
+ B1=3799.92010884369
+ B2=-145739.497346467
+ B3=16270237.2871899
+ B4=-1480016638.82789
+ R25=220
+ T={1+TOL/100}

+ CTH=0.136 GTH0=0.0074837 GTH1=4.701E-6 TK=273.15
.ENDS

Unzip the file and try the test.asc files.

Please post your LTS asc file which is giving the error.

Eric

Woops! loaded the zip!!!

 

So I downloaded this ntc_20130313.lib from EPCOS site. This file contain all thermistors that they have.
And I search my model that I want to simulate and I putted in a txt file.
I have attached also the pmos lib.

 

This NTC I try to use in this current limiter like in the picture that I attached.

 

hi D,
This image shows how you would use a lib model of a thermistor.

E

 

hi D,
This image shows a method for plotting the Thermistor resistance over a specified Temperature range.

E

 

Now I see.
Thank you very much.
Very useful!

Have a nice day,
Gogu