Switching power supply device

US9130467B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9130467-B2
Application numberUS-201414256679-A
CountryUS
Kind codeB2
Filing dateApr 18, 2014
Priority dateOct 21, 2011
Publication dateSep 8, 2015
Grant dateSep 8, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A primary side resonant circuit is formed by a primary side resonant inductor and a primary side resonant capacitor, and secondary side resonant circuits are formed by secondary side resonant inductors and secondary side resonant capacitors. Mutual inductances are formed equivalently through magnetic field resonant coupling between a primary winding and secondary windings, and a multi-resonant circuit that includes two or more LC resonant circuits is formed by a primary side circuit and a secondary side circuit. Electric power is transmitted from the primary side circuit to the secondary side circuit; resonant energy that is not transmitted from the primary winding and, of energy which the secondary winding has received, resonant energy that is not supplied to an output are each retained in the multi-resonant circuit; and, at the secondary side, the resonant energy is retained in a current path in which a rectifying element is not formed in series.

First claim

Opening claim text (preview).

The invention claimed is: 1. A switching power supply device, comprising: a transformer including at least a primary winding and a secondary winding; a primary side circuit including a primary side resonant inductor formed so as to be equivalent to and in series with the primary winding, a primary side resonant capacitor forming, together with the primary side resonant inductor, a primary side resonant circuit, and a primary side alternating current voltage generation circ…

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What does patent US9130467B2 cover?
A primary side resonant circuit is formed by a primary side resonant inductor and a primary side resonant capacitor, and secondary side resonant circuits are formed by secondary side resonant inductors and secondary side resonant capacitors. Mutual inductances are formed equivalently through magnetic field resonant coupling between a primary winding and secondary windings, and a multi-resonant …
Who is the assignee on this patent?
Murata Manufacturing Co
What technology area does this patent fall under?
Primary CPC classification H02M3/28. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Sep 08 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).