Inductor devices – Plural part core
Reexamination Certificate
2006-04-25
2006-04-25
Mai, Anh (Department: 2832)
Inductor devices
Plural part core
C336S005000, C336S178000, C336S180000, C363S017000
Reexamination Certificate
active
07034647
ABSTRACT:
An integrated magnetic assembly that allows the primary and secondary windings of a transformer and a separate inductor winding to be integrated on a unitary magnetic structure is disclosed. The unitary magnetic structure includes first, second, and third legs that are physically connected and magnetically coupled. The primary and secondary windings of the transformer can be formed on the third leg of the unitary magnetic structure. Alternatively, the primary and secondary windings can be split between the first and second legs. Thus, the primary winding includes first and second primary windings disposed on the first and second legs and the secondary winding includes first and second secondary windings disposed on the first and second legs. The inductor winding may also be formed either on the third leg or it may split into first and second inductor windings and disposed on the first and second legs. In addition, one or more legs may include an energy storage component such as an air gap. This integration of the primary and secondary windings and the inductor winding on the unitary magnetic structure advantageously decouples the inductor function from the transformer function and allows the more optimal design of both the inductor and the transformer. The unitary magnetic structure may be coupled to a full bridge, a half bridge, or a push pull voltage input source to form a DC—DC converter.
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Lehman Bradley
Qu Dayu
Yan Liang
Mai Anh
Northeastern University
Weingarten Schurgin, Gagnebin & Lebovici LLP
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