公开(公告)号：EP1835604A1

公开(公告)日：2007-09-19

申请号：EP06425172.1

申请日：2006-03-16

Applicant: STMicroelectronics S.r.l.

Inventor： Vai, Raimondo ,  Gavattari, Giuseppe ,  Gritti, Giovanni

IPC: H02M3/158 ,  H01F1/00 ,  H01F1/08

CPC classification number: H02M3/1584 ,  H01F3/14 ,  H01F27/24 ,  H01F30/12

Abstract: A three phase coupled filter inductor core of a low reluctance material consists of two matching parts joined to create closed magnetic flux paths, at least one part having a planar base portion and four parallel pillars extending from a surface of the planar base, three of the pillars are spaced by a same radial distance, from the axis of a fourth pillar, centered on the planar base.
A coupled three phase filter inductor for a synchronous interleaved multiphase DC-DC buck converter, includes at least three phase coils wound on the three spaced pillars of the coupled inductor core and oriented in a way to establish an inverse magnetic coupling of any one of the three phase coils with the other two coils.

Abstract translation: 低磁阻材料的三相耦合滤波电感器芯由两个匹配的部件组成，以形成闭合的磁通路径，至少一个部分具有平面基部和从平面基底的表面延伸的四个平行柱， 柱与第四柱的轴线间隔相同的径向距离，以平面底座为中心。 一种用于同步交错多相DC-DC降压转换器的耦合三相滤波电感器，包括缠绕在耦合电感器芯的三个间隔柱上的至少三相线圈，并以一种方式建立一个反向磁耦合 三相线圈与其他两个线圈。