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US 11,862,389 B1Granted
Magnetic devices for power converters with light load enhancers
AssigneeVolterra Semiconductor Corporation
InventorsAlexandr Ikriannikov, Anthony J. Stratakos
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Abstract
A magnetic device includes a magnetic core, a plurality of first windings forming respective first winding turns, and a second winding forming a second winding turn. Each first winding turn is within the second winding turn, as seen when the magnetic device is viewed cross-sectionally in a first direction. Yet another magnetic device includes a magnetic core, one or more first windings, and one or more second windings magnetically isolated from the one or more first windings.
Claims8
A magnetic device, comprising:
- a plurality of magnetic film layers forming a magnetic core,
- one or more of the magnetic film layers having:
- (a) a plurality of first windings around a plurality of respective first axes in the magnetic core, the plurality of first windings enclosing a plurality of respective first areas, wherein a first space exists between each winding of the plurality of first windings in a horizontal dimension;
- and
- (b) a second winding around a second axis, the second winding enclosing the plurality of first windings, wherein a second space exists between the plurality of first windings and the second winding,
- wherein the first and second spaces comprise material with a smaller magnetic permeability than the magnetic core.
3 more elements
Dependencies are inferred from the claim text.