US 7,321,283 B2
Vertical winding structures for planar magnetic switched-mode power converters
Vivek Mehrotra, Newbury Park, Calif. (US); Jian Sun, Clifton Park, N.Y. (US); and Sriram Chandrasekaran, Burbank, Calif. (US)
Assigned to ColdWatt, Inc., Austin, Tex. (US)
Filed on Aug. 19, 2004, as Appl. No. 10/922,066.
Prior Publication US 2006/0038650 A1, Feb. 23, 2006
Int. Cl. H01F 5/00 (2006.01)
U.S. Cl. 336—200 19 Claims
OG exemplary drawing
 
1. A power converter, comprising:
a magnetic core having a base, first, center and second legs on said base, and a plate opposite said base, said center leg having an air gap therein;
a vertical winding around said center leg and spaced away from said air gap; and
first and second windings around said first and second legs, respectively, wherein at least one of said first and second windings has a different number of turns from a number of turns of said vertical winding.