Empirical physical transformer to spice model tool

[jpyeron]

i have found a few tools out there to create SPICE models of transformers. But I have not found any that can easily allow adjustments for real (measured) parasitic parameters.

Anyone have thoughts? Should I go off and build one?

[Slh]

What sort of parasitics? It's easy enough write a model with leakage inductance, magnetising inductance and DC resistance.

The trouble comes when you want to add saturation and ac resistance.

[jpyeron]

There are 2 use cases that comes to mind.
1. I have been working on some switch mode power supply circuits - I buy the cores, wind them, but obviously have differences from ideal. I would like to update my circuit simulations.
2. (a just because) I have 100s of new/old coils and transformers laying around, would like to model them.

[jonpaul]

models need parasitic capacity p..s, p...earth, s..earth, shield, etc.

At RF resistance must include skin effect

We used Magnetic Designer from IntuiSoft, creator passed away, it is now free

Jon