LTSpice Import .Model Problem - Doesn't Change Simulation

Discussion in 'Programmer's Corner' started by alka2626, Jan 31, 2016.

  1. alka2626

    Thread Starter New Member

    Dec 16, 2015
    2
    0
    I've received a model file for a Depletion mode, n-channel MOSFET from Microchip and imported it into my LTSpice circuit in the easiest way possible- basically copy and paste the .model file into LTSpice and then change the MOSFET's name to LND01 (the MOSFET type). See .txt file attached

    I used the symbol "N-Channel MOSFET Transistor with explicit substrate" connection because the BODY needs to connect to the GATE, not the Drain. However whether I actually change the name of the MOSFET to LND01 or leave it at the standard NMOS, I'm getting the same simulation. (See attached .asc file)
    Not sure if I'm importing the file incorrectly or the file doesn't work with LTSpice? I've read everything on the topic and not sure where to go from here...

    any help would be great! Thank you!
     
  2. ronv

    AAC Fanatic!

    Nov 12, 2008
    3,292
    1,255
    Not sure if this helps, but remove the 3 volt source and replace with a 10K resistor. I'm not sure LTSpice is happy with it..but maybe.
     
  3. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,804
    1,105
    If you look at the error message that LTS pops up it tells you LTS supports version 3.3.0; not version 3.22 that your model is.
     
  4. alka2626

    Thread Starter New Member

    Dec 16, 2015
    2
    0
    Where did you see an error message? Mine runs fine but just doesn't do a simulation that correlates to the LND01... Is there a terminal I can look at in LTSpice where I can see the error message?
     
  5. eetech00

    Active Member

    Jun 8, 2013
    650
    112
    I think that's a error. Should be version 3.2.2
     
  6. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,804
    1,105
    I downloaded your .asc file, ran the sim and this is the immediate result:-
    SpiceError.PNG
     
Loading...