Maxim Integrated Products, Inc.
SWITCHING POWER CONVERTER ASSEMBLIES INCLUDING COUPLED INDUCTORS, AND ASSOCIATED METHODS

Abstract:

A coupled inductor includes first and second magnetic rails, a plurality of connecting magnetic elements, and a plurality of windings. The first and second magnetic rails are separated from each other in a first direction, and the first magnetic rail has a first cross-sectional area A1 as seen when viewed in the first direction. Each connecting magnetic element is disposed between the first and second magnetic rails in the first direction. The plurality of connecting magnetic elements collectively have a second cross-sectional area A2 as seen when viewed in the first direction, and a ratio of A2/(A1-A2) is at least 1.5. A respective winding is wound at least partially around each connecting magnetic element.