Abstract: Reduction of power loss and operation in a two-phase mode are made possible. The power converter of present invention is a power converter composed of a core formed by a magnetic material and a winding wire wound at a predetermined position of the core and operating in a two-phase mode, in which the core is a closed magnetic path constituted by a center leg, a cylindrical first outer leg arranged in parallel with the center leg and around which the winding wire is wound, and a second outer leg arranged at a position opposite to the first outer leg with respect to the center leg.

Abstract: An inductor includes a magnetic core having high permeability or high saturation property; and a coil element embedded in the magnetic core, wherein the magnetic core has a polygon, with 5 or more, pillar shape.