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Do you have experience with SPICE simulation of IGBT switching, how realistic ?
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Miyuki:
Hi folks,

Do you have experience with simulating IGBTs switching behavior and losses ? I know it will be hugely affected by provided models. I want to use infineons devices.
I know they tell simulation dont replace measuring a prototype, but are results at least reasonable close to reality? Like +-10-20% ?
fourtytwo42:
Surprised nobody else answered you however simulations especially switching depend on how well you simulate all the other circuit elements, especially the driver, the load if its inductive, any current the diode is going to handle and any potential avalanche power. I have done plenty of sims and actuals with mosfets, less so with igbt's and I would not say the sims have been an order of magnitude out but as I say it depends how much effort you put into modelling. Tuning at the prototype is fairly easy unless you make a bad mistake (heatsink to small, bad layout resulting in excessive ringing etc).
Miyuki:
I know modeling can be tricky. But basically from layout data you can get all traces stray inductance, what is main issue
Traces coupling will be missing but it is more issue on small signal control loops 
Then is only question how models represent behavior of active devices
fourtytwo42:
To answer that you would have to inspect the model for the accuracy of the parameters that concern you. Most semi manufacturers mosfet/igbt models I have encountered are good enough for normal purposes however I have encountered some rubbish models on the general web through searching for component xyz so it just the same as the old saying "buyer beware".
Yansi:
Why do you need to model it? All you need is the Eon Eoff energy from the datasheet and the Vcesat(Ic) curves.
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