Patent ID: 6873237
Filing Date: 2005-03-29
Classification: H01F,H02M

Abstract:
1. A core comprising: a base having an outer edge and a top region, a first post disposed on the top region of the base at the outer edge, a second post disposed on the top region of the base at the outer edge, a third post disposed on the top region of the base at the outer edge, a fourth post disposed on the top region of the base at the outer edge, a shared common center portion disposed on the base, a top disposed on the posts and opposite the base, wherein the first post and the center portion are separated on the base to thereby define a first window, the second post and the center portion are separated on the base to thereby define a second window, the third post and the center portion are separated on the base to thereby define a third window, the fourth post and the center portion are separated on the base to thereby define a fourth window, and the top and center portion are spaced apart to thereby define an air gap, eight primary windings and eight secondary windings in an arrangement on the core, the arrangement defining four cells each comprising two primary windings and two secondary windings, and a control circuit having an output connected to the primary windings, the control circuit having at least two phases, said phases being power transfer phases, in which current runs from the output in a first direction during a first power transfer phase and in the opposite direction during a second power transfer phase, two of the cells being powered by the control circuit during the first power transfer phase and the other two cells being powered by the control circuit during the second power transfer phase, said arrangement forming a power converter suitable for providing a load current to a load.