Hi,
Does Anybody know of any off-the-shelf vendors of Litz wire for winding of Boost PFC inductors? (We need Litz as the coil will be near a gap in the ferrite and exposed to the fringing field)
We know of Furukawa TEX-ELZ, but we don’t need the triple insulation, and would like more strands than the seven that TEX-ELZ gives….
TEX-ELW TIW Litz:
https://www.furukawa.co.jp/tex-e/en/product/texelz.html
Other than Furukawa, none of the Litz wire vendors offer a Litz wire datasheet with sufficient info on it for you to decide if the wires were suitable or not (eg, they don’t give the insulation rating, don’t say if its solderable, don’t give the overall max outer diameter, etc etc).
Power integrations recommend “served Litz Wire” (anything from 40 to 60 strands of AWG38) in all of their PFC Application notes eg DER-484. I contacted Power integrations for the part number, and they just gave me two company names, “mwswire.com” and “newenglandwire.com”. However, I contacted mwswire.com, and they just emailed me back and told me to ask Power integrations which Litz wire part number they were referring to.
Does anybody know of any Litz datasheets for offtheshelf Litz wire that we can look at?
We need an insulation test rating of 500VAC for 1 minute at <500uA.