PFC choke core material
Hey guys, an electrical engineering intern here.
Im trying to make a passive PFC choke (basically just an inductor with an inductance of >=3mH, which doesn't saturate at~ 5 Arms). It doesn't seem like there are any inductors on Digikey (where I've been searching) that meet this spec. The higher the inductance becomes, the less the saturation current is.
I want to make my own, but I don't know how to choose a material for the core. I was thinking iron powder. Does anyone have any recommendations from experience or for literature that I could look into?
Another Ivan over here!
I would say ferrite, thats what I use for PFC. For 5A several similar inductors can be connected in series-parallel. In these, the inductance decreases with current. Anyway I recommend you to consult manufacturer’s datasheet, so you can run calculations with especific materials.