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Unable to import SPICE file in Cadence Virtuoso

AM202409065657

Hi,

I am currently working on creating a CMOS gatedriver for Silicon Carbide FETs. For that, I want to instantiate a Spice model of a SiC fet from the manufacturer. But from online tutorials and Chatgpt, I am unable to properly compile the spice file.

Older Cadence Resource used: Older Forum Post

The raw file that I got from the manufacturer's website is attached: infineon-spice-coolsic-1700v-gen1-trench-mosfet-simulationmodels-en.zip

To make only one model compatible, I edited this file to only get the necessary part for the L1 model for the IMBF170R450M1 device, so that I can use the older forum post as a reference. I have pasted it after this: (note this is chatgpt generated)

*** Moderator: Removed model as it's Infineon's model and should not be re-published. It can be downloaded from the link given above.


I imported this text as both a spicetext and pspice type file and am unable to extract it. The following errors are shown.



Seems like all the .PARAM statements are highlighted in red. I dont know how to proceed with this issue as I am not familiar with using such files. Any help is appreciated.

Thanks!



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  • Andrew Beckett

    First of all, I removed the model text from the post above as it's Infineon's IP. Whilst they publish it on their site, it should not be re-published here. I also included the error screenshot directly in the post because for me (at least) google drive access is not allowed on our network.

    Secondly, this is not a standard SPICE model - it's specifically been tested with "SIMetrixTM SPICE simulator" according to the downloaded model file. The syntax looks more Pspice-like than SPICE. If you hover over the highlighted lines, it says:

    Error: Cannot run the simulation because an unexpected character '{' was found at line 27 in the netlist. Correct the syntax error and rerun the simulation.
    Error: Cannot run the simulation because syntax error `Unexpected closing parenthesis. Expected end of file or end of line' was encountered at line 27, column 26. Correct the syntax error and rerun the simulation.

    There are other errors further down because of the FUNC too. Again, because it's not normal SPICE.

    If instead you use PSPICE, for me it parses OK (using IC25.1 ISR3 or IC23.1 ISR17, together with SPECTRE25.1 ISR6). However, when you try to simulate it fails because there's a use of LN() for natural log, whereas in PSPICE that's LOG(). I changed the LN to LOG and it then runs with a PSPICE view.

    Note, to create the pspice view I used the type as Pspice when I used File->New->CellView.

    Andrew

  • AM202409065657
    in reply to Andrew Beckett

    Hi Andrew!

    Thank you for your detailed answer. The model works now in Cadence. 


    Regards,
    Anish

Reply
  • AM202409065657
    in reply to Andrew Beckett

    Hi Andrew!

    Thank you for your detailed answer. The model works now in Cadence. 


    Regards,
    Anish

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