si2302 mosfet spice model please

Can someone give me the correct params for a si2302 mosfet? I can only find "level 3" spice models and circuitlab needs level 1, apparently. I don't know enough to translate it correctly.

by tedder
3 days, 18 hours ago

Hi @tedder, three questions:

  1. Can you post a link to the Level 3 model you've found?
  2. Also, is this the correct datasheet? Vishay Siliconix Si2302DS
  3. Can you describe what you're trying to simulate so we get some idea on how accurate the model needs to be?
by mrobbins
3 days, 18 hours ago

Here's a really quick and dirty Si2302DS model I made by reading the datasheet:

I wrote down the various assumptions I made in the schematic. If you run the simulation, it mimics the "Transfer Characteristics" curve from page 3.

It's really just a rough reading of the datasheet, and I skipped some parameters, but it might be enough to get you started.

Feel free to copy+paste it from my circuit into your own.

by mrobbins
3 days, 18 hours ago

mrobbins, thanks. I had some numbers but they weren't at all sane (they didn't work as I'd expect). Yours did. SPICE is beyond my knowledge as a hobbyist, it's indistinguishable from magic :)

What I really needed was parameters that seemed approx correct from 0-100khz and around 1-2v Vgs. This is within range.

by tedder
3 days, 16 hours ago

Great! Glad to hear it :)

by mrobbins
3 days, 16 hours ago

Post a Reply

Please sign in or create an account to comment.

Go Ad-Free. Activate your CircuitLab membership. No more ads. Save unlimited circuits. Run unlimited simulations.

About CircuitLab

CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.