SIwave Far field simulation
I want to do EMI EMC analysis on my PCB of a ZCS buck converter. I am using SIWave for this. When I have to select current and voltage sources do I have to mention all the components using the voltage (say +18V) as a voltage source or just the pin header that is supplying it? Let's say I have a 18 V to 5 V regulator ic. What should I assign this IC as? Also, does PWM generator ic like TI's SG3524 be assigned a current source?