SYSTEMS AND METHODS FOR PROMOTING LOW LOSS IN PARALLEL CONDUCTORS AT HIGH FREQUENCIES
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Aug 2, 2013
filing date -
Aug 6, 2012
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Abstract
A magnetic device includes a winding forming N turns, where N is an integer greater than or equal to one. The winding includes a stack of M foil conductors electrically coupled in parallel, where adjacent foil conductors of the stack of M foil conductors are separated from each other by a respective separation layer. M is an integer greater than one. Each separation layer has dimensions such that net magnetic flux in the separation layer is substantially zero when a changing current of equal magnitude flows through each of the M foil conductors. Another magnetic device includes M foil conductors electrically coupled in parallel. M is an integer greater than one. The M foil conductors are magnetically coupled. The other magnetic device further includes a current balancing transformer electrically coupled to the M foil conductors.
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