NTC thermistors model B57164K0221

Discussion in 'Electronics Resources' started by DRAGOS-GEORGEL GOGU, Apr 26, 2016.

  1. DRAGOS-GEORGEL GOGU

    Thread Starter New Member

    Apr 25, 2016
    8
    0
    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 ? :D
     
  2. ericgibbs

    AAC Fanatic!

    Jan 29, 2010
    2,504
    380
    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!!!
     
    Last edited: Apr 26, 2016
  3. DRAGOS-GEORGEL GOGU

    Thread Starter New Member

    Apr 25, 2016
    8
    0
    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.
     
  4. DRAGOS-GEORGEL GOGU

    Thread Starter New Member

    Apr 25, 2016
    8
    0
    This NTC I try to use in this current limiter like in the picture that I attached.
     
  5. ericgibbs

    AAC Fanatic!

    Jan 29, 2010
    2,504
    380
    hi D,
    This image shows how you would use a lib model of a thermistor.

    E
     
    DRAGOS-GEORGEL GOGU likes this.
  6. ericgibbs

    AAC Fanatic!

    Jan 29, 2010
    2,504
    380
    hi D,
    This image shows a method for plotting the Thermistor resistance over a specified Temperature range.

    E
     
    DRAGOS-GEORGEL GOGU likes this.
  7. DRAGOS-GEORGEL GOGU

    Thread Starter New Member

    Apr 25, 2016
    8
    0
    Now I see.
    Thank you very much.
    Very useful!

    Have a nice day,
    Gogu
     
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