Hello everybody, I am trying to design a constant current LED-Driver in flyback configuration with TOP224. However I cannot find any spice model of it. Is there a chance of getting one? I have seen some designs using PSpice. So there must be something.... The PI EXpert software does not really fit my needs since I am kind of a beginner and I would like to do some investigations on the circuit before I built it. And another questions. Some Application Notes refer to DN-14, but I couldn't find it on the homepage. Regards Chris.