Vertical winding structures for planar magnetic switched-mode power converters
First Claim
Patent Images
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.
7 Assignments
0 Petitions
Accused Products
Abstract
A vertical winding structure for planar integrated magnetics used in switched-mode power converters maintains close coupling between the different windings but reduces the eddy current losses, lowers the DC winding resistance and reduces the number of layers of the PCB. Vertical and horizontal windings can be used together without sacrificing these performance advantages and further minimizing the capacitive coupling between the outer-leg windings and the center-leg winding. This winding structure can be used in a wide range of magnetic structures including isolated and non-isolated CDRs, interleaved CDRs, and buck and boost converters.
-
Citations
19 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
Specification