<@U01SBMJT5BP>: Any chance of getting level 3 dio...
# xycet
Tim Edwards
03/22/2022, 12:46 PM@User: Any chance of getting level 3 diode support in Xyce?
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Eric Keiter
03/25/2022, 9:59 PM@User I’d have to look into it a bit. As far as I know, the level=3 is a proprietary model inside of Hspice. So, usually the answer in such cases is that it isn’t possible without a published open model. (Most modern MOSFET models are in the open domain, which is why we can support them). However, diodes are sometimes an exception. The “level=2” diode model is our attempt to reproduce the Pspice diode model, and that was just based on the equations that could be found int he manual.
Eric Keiter
03/25/2022, 10:02 PMIt seems like the level=3 model in Hspice might just be geometrical extensions to the level=1. If that is the case, and the various geometrical formulas are written down somewhere, (or we can infer them) it might be possible.
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Tim Edwards
03/25/2022, 10:03 PMThat was the impression I got---and I think that's what Holger Vogt did when I asked if it could be done in ngspice. The geometrical formulas are implemented in ngspice, for one.
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Tim Edwards
03/25/2022, 10:05 PMThere may be a few additional parameters, but so far, I think all the use cases I've seen were using only level 1 parameters plus area and perimeter geometry.
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Eric Keiter
03/28/2022, 3:49 PM@User sounds good, I’ll look into the level=3 diode
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