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spice model question

fongcj
fongcj over 17 years ago

I'm trying to simulate a circuit that has an infineon bfr750 in it. My libraries do not contain it and all I'm given from the the infineon website is a .CIR file and a set of .S2P file. How do I create this part with the parameters I was given?

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  • oldmouldy
    oldmouldy over 17 years ago

    I downloaded the archive from the Infineon site, it looks to me like the bfr750l3_tslp3-9_spice.txt file contains the SPICE model definition. You should be able to refer your simulator to this definition.

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  • vokaraca
    vokaraca over 17 years ago

     Hi every one, I have got a simillar problem. I tried to use ad8021 model from analog devices' page and it didn't work. The file has a cir extension. When I tried to simulate I always get the "error: the first statement line must be subckt" message. Everything looks fine. I also modified the file end like ".ends ad8021" instead of ".ends", but the result was same. I neither find a file bfr750l3_tslp3-9_spice.txt nor how I should be able to refer my simulator. I also added my cir file as a global configuration file as it is said at the other forums, but it didn't help me again. Does anyone have an ideal what the problem would be? 

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  • oldmouldy
    oldmouldy over 17 years ago

    The knowledge of which simulator you are using would be valuable!

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  • vokaraca
    vokaraca over 17 years ago

     Sorry, I use cadence PSpice A/D 16.0.0.p001.

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  • oldmouldy
    oldmouldy over 17 years ago

    Looks like you are running a base release. Contact your Cadence Channel Partner or SourceLink account to get the latest hotfix, that should ensure that the "bugs" are taken care of.

    Refer to Appendix C of the PSpice Users Guide, pspug.pdf in the doc\pspug directory of the installation.

    The contents of the CIR file are probably fine. Firstly, rename the original CIR file to have a ".lib" extension. Open the file with the Model Editor, Start>Programs>{OrCAD group}>PSpice Accessories>Model Editor, then use FIle>Open and point to the LIB file. use File>Save to get the formatting set for PSpice. Use File>Export to Capture Part Library to make a schematic part for Capture, for a SUBCKT, this will be a "black box" rectangle with pins. In the design, use Place>Part to add the new schematic library and place the part, complete the circuit. In the simulation profile, go to the Configuration files tab, pick the Library option, select the LIB file and use the "Add to Design" button to add the lib file to the design. Run the simulation. If you get an "Undefined Subcircuit" the LIB file is not correctly configured, otherwise everything should work.

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