Coupled Inductor Arrays And Associated Methods
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United States of America Patent
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Issued Date -
May 23, 2013
app pub date -
Nov 22, 2011
filing date -
Nov 22, 2011
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Abstract
A coupled inductor array includes a magnetic core and N windings, where N is an integer greater than one. The magnetic core has opposing first and second sides, and a linear separation distance between the first and second sides defines a length of the magnetic core. The N windings pass at least partially through the magnetic core in the lengthwise direction, and each of the N windings forms a loop in the magnetic core around a respective winding axis. Each winding axis is generally perpendicular to the lengthwise direction and parallel to but offset from each other winding axis. Each winding has opposing first and second ends extending towards at least the first and second sides of the magnetic core, respectively. One possible application of the coupled inductor array is in a multi-phase switching power converter.
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