A power inductor includes a first magnetic core having a first end and a second end, an inner surface and an outer surface, and an inner cavity defined by the inner surface. A slotted air gap in the first magnetic core extends from i) the first end to the second end and ii) from the inner surface to...http://www.google.fr/patents/US8098123?utm_source=gb-gplus-shareBrevet US8098123 - Power inductor with reduced DC current saturation
