The present invention provides a foil wound low profile power L-C processor. A magnetic winding is disposed within a core. The magnetic winding can be made of one or more sets of conductive foil and insulation film wound together in a spiral pattern. The magnetic winding can also include dielectric film. The magnetic winding can have a center aperture in which a non-magnetic and non-conductive center post can be disposed. The center post can also be divided into portions with a combined length less than the length of the center aperture to form an air gap within the center aperture.