Two-Phase Coupled Inductors for Improved PCB Layout

A printed circuit board, coupled inductor technology, applied in inductors with magnetic cores, circuits, transformer/inductor coils/windings/connections, etc., to solve problems such as excess loss, difficult manufacturing, and unreliable operation
CN103081325BActive Publication Date: 2016-08-03VOLTERRA SEMICONDUCTOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
VOLTERRA SEMICONDUCTOR
Publication Date
2016-08-03

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Abstract

A two-phase coupled inductor includes a magnetic core, at least a first winding and at least three soldering tabs. A power supply includes a printed circuit board, a two-phase coupled inductor attached to the printed circuit board, and first and second switching circuits attached to the printed circuit board. Each of the first and second switching circuits is electrically coupled to a corresponding pad of a two-phase coupled inductor attached to the printed circuit board.
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Description

[0001] Cross References to Related Applications

[0002] This application is a continuation-in-part of U.S. Patent Application Serial No. 12 / 786,316, filed May 24, 2010, which is a continuation-in-part of U.S. Patent Application Serial No. 12 / 643,957, filed December 21, 2009 Application. All of the above applications are incorporated herein by reference. Background technique

[0003] US Patent No. 6,362,986 to Schultz et al. describes switching direct-current-direct-current (DC-DC) converters with a multi-phase coupled-inductor topology, the disclosure of which is incorporated herein by reference. Advantages of such a converter include reduced ripple current in the inductor and switches, which can reduce the inductance per phase and / or reduce the switching frequency on converters with traditional multiphase DC-DC converter topologies. Therefore, DC-DC converters with magnetically coupled inductors have excellent transient response without loss of efficiency compared to conve...

Claims

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