Hi Matt,
I typically do not bother to use actual transistor models unless im
specifically focusing on the non-ideal aspects of the circuit (switching
loss, conduction loss, propagation delays...). It's much simpler to just
use the "SW" (voltage controlled switch) along with an ideal freewheeling
diode to represent an IGBT or MOSFET. This can speed up simulation time,
as well, which becomes important in some cases. Of course, it all depends
on what aspects of a circuit you are interested in, i almost always make
simplifications somewhere or another to save my time constructing a
simulation and running it. Occasionally i do model all the parasitics, in
which case it can take minutes just to crank out a few uS of simulation!
Anyway, glad you're moving on to better things beyond being stuck on
getting the tool to work :-).
On Tue, Jan 3, 2017 at 9:33 AM, msweeney23@xxxxxxxxx <msweeney23@xxxxxxxxx>
wrote:
> Hey thanks Steve. I was able to get it to work using the very same
> procedure but only after using a different set of models for the MOSFETS.
> It is actually based on your early SSTC designs and that has been
> invaluable!
> I am still trying to track down a decent (fast/simple) IGBT model so if
> you have any suggestions that would be very helpful.
>
> It doesn't have to be a direct part for part model just something that
> will be suitable for helping me learn (spice first then a simple driver on
> breadboard).
>
> I am using an old Tektronix 465 scope I just finished repairing so my tech
> is a bit out of date, but it works well enough :)
>
> Thanks again,
>
> Matt
>
> ----- Reply message -----
> From: "Steve Ward" <steve.ward@xxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Subject: [TCML] LTSpice+Encrypted lib/models
> Date: Mon, Jan 2, 2017 8:36 PM
>
> Matt,
>
> I think there are just a few things required to get a library to work (at
> least, this is my experience)
>
> 1) put a copy of the library file (should be a .lib) in the \lib folder,
> which is in the LTC installation folder on your machine (for me it looks
> like C:\Program Files(x86)\LTC\LTspiceIV\lib)
> 2) use the .inc lib_name.lib in your schematic
> 3) at this point my components list now includes a new part (or group of
> parts) that i can drop onto my schematic.
>
> If that doesn't work, send me a link the the fairchild library and i'll try
> it myself and report back.
>
> Steve
>
>
>
> On Tue, Dec 13, 2016 at 11:19 AM, Matthew Sweeney <msweeney23@xxxxxxxxx>
> wrote:
>
> > Hello all, I am working through some activities using LTSpice for
> > simulating SSTC designs and need some education :)
> >
> > I have an 'encrypted' model file (text) from Fairchild Semi for some of
> > their IGBT products and cannot seem to get it working. I've tried the
> > .include directive but I still do not understand how to then place a
> > component that uses the model itself.
> >
> > Any help or links to resources would be greatly appreciated!
> >
> > Matt
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
> >
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