Hi Kris,
thank you for your quick response. I think so, I downloaded them on 16th of April at 8:16 a.m.
As I read in the release notes, there are some new features according the thermal package description with in version 4.7 and 4.8. And the GaN models are based on a thermal package description. This might be a problem, however, the install file says that PLECS 4.6.x or later is required to use the GaN Systems models.
With my first described workaround I had the problem that four devices had the exact same junction temperature (within a 3L ANPC). The root cause might be that the thermal package - especially the state-space matrices - description was faulty because of my workaround.
For now I did the workaround to create new thermal descriptions for descrete components based on my selected GaN Systems HEMT. Surely this is not how to do it but it fixed my problem. Moreover I do not need the thermal package description at the moment, maybe in the future.
So is this error also at someone’s other machine?
I would likely upgrade my PLECS version but I am limited with my user settings at my company. I will still try it in the next days.