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INA180: PSpice for TI: simulation failed

user4616635
Prodigy 60 points
Part Number: INA180
Other Parts Discussed in Thread: INA181

Tool/software:

Hi,

Download the following zips, open .opj and .dsn with PSpice for TI 2024.

https://www.ti.com/jp/lit/zip/sbomad0

https://www.ti.com/jp/lit/zip/sbombc4

Run simulation and the error occurred:

What should I do for the simulation?

  • 0
    TI__Mastermind 31775 points

    Hello Appreciated Engineer,

    I do get this problem as well. You can simply fix it by adding a probe to the simulation circuit.

    You can add up to 2 more probes from what I can tell.

    This is an inherent limitation of free PSPICE for TI. You must use at least one probe or < 4 when project has >1 model that uses PSPICE transistors or diodes inside of it.

    You can use even more probes if you only simulate one model variant at a time. You can do this by deleting the other unused imported models from the project specifically in Pspice Resources -> Model Libraries.

    You may 

    Sincerely,

    Peter

  • 0 in reply to Peter Iliya
    Prodigy 60 points

    Dear Peter,

    I could see result trace, but still remain the error. Put the probe to the OUT_A1, OUT_A2, OUT_A3 and OUT_A4, and clicked [Run], 

    and

    for https://www.ti.com/jp/lit/zip/sbomad0

    After [Cancel] at the second dialog, and then [Run] on the Transient window:

    Anyway I think that could get the correct trace. Is it true?

    Best,

    Yasunori Okutsu

  • +1 in reply to user4616635
    TI__Mastermind 31775 points

    Hello Yasunori,

    These are the correct traces. This error is fickle and error message may show up regardless if it will display waveforms. Either try deleting one of the probes OR delete 3 of the INA181 models and keep the only one you are going to simulate. The issue is that you have all 4 INA181 variants in the project, but the limitation is you can only simulate one model (which has internal diode/transistor) at a time.

    When deleting models from the project, you may also have to delete the .lib files in the Library folder associated with project. If you create a new project and import a single model you want to validate, then this should also get rid of the message too.

    Sincerely,

    Peter

  • 0 in reply to Peter Iliya
    Prodigy 60 points

    Dear Peter,

    I understand clearly. Thank you very much.

    Best,

    Yasunori