Power converter magnetic devices

Details Power converter magnetic devices Power converter magnetic devices

2009-05-28

2011-10-04

Mai, Anh (Department: 2832)

Inductor devices

Plural part core

C336S178000, C336S221000, C336S220000

Reexamination Certificate

active

08031042

ABSTRACT:
Magnetic structures for use in components utilized in switched mode power supplies can be combined to provide space and cost savings. Portions of magnetic cores can be utilized to form more than one component and/or separate magnetic cores can be combined into a single core. Further, a layer of material that has a higher flux density saturation point than the core and that is lower in permeability than the core (but higher than that of air) can be placed adjacent to the air gap in a core to decrease the magnetic flux passing through the vicinity surrounding the core so as to reduce EMI. A differential-mode choke and a separate common-mode choke can be combined onto a single core. An extra leg for a PFC choke core can be added to an isolation transformer core to form a single combined core. A pair of E-E core structures can be combined into a single core structure such as could be used to combine a pair of separate PFC chokes into an integrated pair of PFC chokes.

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