What creepage distances are required between nodes on the primary circuit side, to meet IEC 60950 safety requirements? My circuit uses an LNK606 running from 240Va.c. (nominal) with a peak voltage on the drain pin measured at about 530V. I'd like to know the gap to leave between PCB tracks and in particular between adjacent pins on the transformer (primary side). I'm using a FR4 PCB with solder resist, in a domestic environment.
Does Table 2Q apply? (Minimum separation distances for coated printed boards) Otherwise is it Table 2N? (Minimum creepage distances). If Table 2Q then presumably the voltage to use is the peak volateg on the drain pin. If table 2N then what voltage should be used?
(I'm sure there must be a thread that covers this topic - perhaps someone can point me there).
Thanks - Charles