JPH03212913A - Inductance component - Google Patents
Inductance componentInfo
- Publication number
- JPH03212913A JPH03212913A JP861390A JP861390A JPH03212913A JP H03212913 A JPH03212913 A JP H03212913A JP 861390 A JP861390 A JP 861390A JP 861390 A JP861390 A JP 861390A JP H03212913 A JPH03212913 A JP H03212913A
- Authority
- JP
- Japan
- Prior art keywords
- core
- type core
- printed coil
- gap
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 abstract description 19
- 230000004907 flux Effects 0.000 abstract description 13
- 244000299461 Theobroma cacao Species 0.000 description 4
- 235000009470 Theobroma cacao Nutrition 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F2017/0053—Printed inductances with means to reduce eddy currents
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はスイッチング電源等に用いるトランスなどのイ
ンダクタンス部品に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to inductance components such as transformers used in switching power supplies and the like.
従来の技術
スイッチング電源は、スイッチング周波数の高周波化に
より小型・薄型化を実現しようとしており、トランスの
ようなインダクタンス部品は、巻線にプリント状のコイ
ルを用いた物が使用され始めている。プリント状のコイ
ルを用いると小型・薄型化が可能、巻線の表皮効果によ
る損失が少ない、１次−２次間の結合が高くできる等の
効果があるが、その反面、巻線が平板状であるためにギ
ャップ付近の磁束による渦電流が増加し、損失が大きい
という問題があった。従来、この種のトランスは、コア
のギャップ面は、プリント状のコイルに形成されている
導電体の平面図と平行方向に形成されていた。Conventional technology Switching power supplies are becoming smaller and thinner by increasing the switching frequency, and inductance components such as transformers are beginning to use printed coils for their windings. Using printed coils has the advantage of being smaller and thinner, reducing loss due to the skin effect of the windings, and increasing the coupling between the primary and secondary coils, but on the other hand, the windings are flat-shaped. Therefore, there was a problem in that eddy currents due to magnetic flux near the gap increased, resulting in large losses. Conventionally, in this type of transformer, the gap plane of the core was formed in a direction parallel to the plan view of the conductor formed in the printed coil.
第７図は、従来のプリント状コイルを用いたトランスを
示すもので、１．１’ はＥＥ型コア、２はプリント状
のコイル、３はプリント状に形成された導電体である。FIG. 7 shows a conventional transformer using a printed coil, where 1.1' is an EE type core, 2 is a printed coil, and 3 is a printed conductor.
第７図におけるギャップ及び巻線構造を示す要部断面図
を第８図に示す。２はプリント状コイル、１．１′はＥ
型コア、５はＥＥ型コア１，１′の外側の磁脚、６はＥ
Ｅ型ココア１１′の中央の磁脚、４はＥＥ型ココア１１
′の中央の磁脚６に形成したギャップである。FIG. 8 is a sectional view of a main part showing the gap and winding structure in FIG. 7. 2 is a printed coil, 1.1' is E
type core, 5 is the outer magnetic leg of EE type core 1, 1', 6 is E
The central magnetic leg of the E-type cocoa 11', 4 is the EE-type cocoa 11
This is the gap formed in the magnetic leg 6 at the center of '.
第９図は、第８図におけるギャップ４付近の磁束を説明
するための要部拡大図である。５はＥＥ型ココア１１′
のギャップ４付近に発生する磁束である。FIG. 9 is an enlarged view of a main part for explaining the magnetic flux near the gap 4 in FIG. 8. FIG. 5 is EE type cocoa 11'
This is the magnetic flux generated near gap 4.
発明が解決しようとする課題
このような従来の構成では、ＥＥ型ココア１１′のギャ
ップ４の面がプリント状コイル２に形成されている導電
体３の平面図と平行方向であるために前記ギャップ４の
付近に発生する磁束５は、前記プリント状コイル２に形
成されている導電体３の平面部を垂直に横切るため、渦
電流が発生し易い構造となっており、この渦電流による
損失が大きいと言う問題があった。Problems to be Solved by the Invention In such a conventional configuration, since the surface of the gap 4 of the EE type cocoa 11' is parallel to the plan view of the conductor 3 formed on the printed coil 2, the gap is Since the magnetic flux 5 generated near the printed coil 2 perpendicularly crosses the flat surface of the conductor 3 formed in the printed coil 2, the structure is such that eddy currents are likely to occur, and the loss due to this eddy current is There was a problem with how big it was.
本発明はこのような問題に鑑み、ギャップ付近に発生す
る磁束によってプリント状に形成された導電体に渦電流
が発生しにくく損失の少ないインダクタンス部品を提供
するものである。In view of these problems, the present invention provides an inductance component in which eddy currents are less likely to occur in a printed conductor due to magnetic flux generated near the gap and have less loss.
課題を解決するための手段
この課題を解決するために本発明は、コアのギャップ面
をプリント状コイルに形成されている導電体の平面部と
直交方向になるよう構成したものである。Means for Solving the Problems In order to solve this problem, the present invention is configured such that the gap surface of the core is perpendicular to the flat surface of the conductor formed in the printed coil.
作用
このような構成により、コアのギャップ面がプリント状
コイルに形成されている導電体の平面部と直交方向であ
るためにギャップの付近に発生する磁束は、前記プリン
ト状コイルに形成されている導電体の平面部を平行方向
に近い角度で横切るため、渦電流が発生し難い構造とな
っており、この渦電流による損失が少なくなる。Effect: With this configuration, the gap surface of the core is perpendicular to the flat surface of the conductor formed in the printed coil, so the magnetic flux generated near the gap is absorbed by the printed coil. Since the conductor crosses the flat part of the conductor at an angle close to the parallel direction, the structure is such that eddy currents are difficult to generate, and loss due to this eddy current is reduced.
実施例 以下、本発明の実施例をトランスを例として説明する。Example Embodiments of the present invention will be described below using a transformer as an example.
第１図は本発明の第１の実施例によるトランスの斜視図
である。FIG. 1 is a perspective view of a transformer according to a first embodiment of the present invention.
第１図において１０はＥ型コア、１１は１型コアである
。１２はプリント状のコイル、１３はプリント状コイル
１２に形成されている導電体である。第２図は第１の実
施例によるトランスの断面図である。１４はギャップで
あり■型コア１１を３つに分割することにより構成しで
ある。In FIG. 1, 10 is an E-type core, and 11 is a 1-type core. 12 is a printed coil, and 13 is a conductor formed on the printed coil 12. FIG. 2 is a sectional view of the transformer according to the first embodiment. 14 is a gap, which is constructed by dividing the square-shaped core 11 into three parts.
第３図は第１の実施例によるトランスのギャップ部分の
拡大図である。１５は磁束でありギャップ１４がプリン
ト状コイル１２に形成されている導電体１３に対して直
交方向であるため磁束１５は、プリント状コイル１２に
形成されている導電体１３の平面部を平行方向に近い角
度で横切るため、渦電流が発生し難い構造となっている
ため損失が少ない。FIG. 3 is an enlarged view of the gap portion of the transformer according to the first embodiment. Reference numeral 15 denotes a magnetic flux, and since the gap 14 is perpendicular to the conductor 13 formed on the printed coil 12, the magnetic flux 15 moves the flat part of the conductor 13 formed on the printed coil 12 in a parallel direction. Since the wire crosses at an angle close to , the structure is such that eddy currents are less likely to occur, resulting in less loss.
第４図は本発明の第２の実施例によるトランスの斜視図
である。第４図において２１はＩ型コア、２０はＥ型コ
アである。２６はＥ型コア２０の中央の磁脚、２５はＥ
型コア２０の外側の磁脚であり、外側の磁脚２５は中央
の磁脚２６よりも前記Ｉ型コア２１の厚さ分だけ長くし
である。２２はプリント状のコイル、２３はプリント状
コイル２２に形成されている導電体である。第５図は第
２の実施例によるトランスの断面図である。２４はギャ
ップであるＩ型コア２１とＥ型コア２０の外側の磁脚２
５の間に設けである。FIG. 4 is a perspective view of a transformer according to a second embodiment of the invention. In FIG. 4, 21 is an I-type core, and 20 is an E-type core. 26 is a magnetic leg at the center of the E-type core 20, 25 is an E
The outer magnetic legs 25 are longer than the central magnetic legs 26 by the thickness of the I-shaped core 21. 22 is a printed coil, and 23 is a conductor formed on the printed coil 22. FIG. 5 is a sectional view of a transformer according to the second embodiment. 24 is a magnetic leg 2 on the outside of the I-type core 21 and E-type core 20, which is a gap.
It is set between 5 and 5.
第６図は第２の実施例によるトランスのギャップ部分の
拡大図である。２５は磁束でありギャップ２４がプリン
ト状コイル２２に形成されている導電体２３に対して直
交方向であるため磁束２５は、プリント状コイル２２に
形成されている導電体２３の平面部を平行方向に近い角
度で横切るため、渦電流が発生し難い構造となっており
ギャップ２４がプリント状コイル２２から離れているた
め、さらに渦電流が発生し難く損失が少ない。FIG. 6 is an enlarged view of the gap portion of the transformer according to the second embodiment. Reference numeral 25 denotes magnetic flux, and since the gap 24 is perpendicular to the conductor 23 formed on the printed coil 22, the magnetic flux 25 moves the flat part of the conductor 23 formed on the printed coil 22 in a parallel direction. Since the gap 24 crosses at an angle close to , the structure is such that eddy currents are difficult to generate, and since the gap 24 is separated from the printed coil 22, eddy currents are even less likely to occur, resulting in less loss.
なお、本発明は、上記実施例のようなトランスだけでな
く、チョークコイルのようにギャップを有するコアを用
いたインダクタンス部品全てに適応できる。Note that the present invention is applicable not only to the transformer as in the above embodiment, but also to all inductance components using a core with a gap, such as a choke coil.
発明の効果
以上のように本発明によればコアとプリント状のコイル
より構成されるインダクタンス部品において、前記コア
のギャップ面が前記プリント状のコイルの平面部と直交
方向となる構造としたのでギャップ付近の磁束は、プリ
ント状コイルに形成されている導電体の平面部を平行方
向に近い角度で横切るため、渦電流が発生し難い構造と
なっているため損失が少ないという効果を得ることがで
きる。Effects of the Invention As described above, according to the present invention, in an inductance component composed of a core and a printed coil, the gap surface of the core is perpendicular to the flat surface of the printed coil. The magnetic flux in the vicinity crosses the flat part of the conductor formed in the printed coil at an angle close to the parallel direction, so the structure is such that eddy currents are difficult to generate, resulting in low loss. .
第１図は本発明の第１の実施例によるトランスを示す斜
視図、第２図は同断面図、第３図は第２図の要部の拡大
図、第４図は本発明の第２の実施例によるトランスを示
す斜視図、第５図は同断面図、第６図は第５図の拡大図
、第７図は従来のプリント状コイルを用いたトランスを
示す斜視図、第８図は同断面図、第９図は第８図の拡大
図である。
１０．２０・・・・・・Ｅ型コア、１１．２１・・・・
・・Ｉ型コア、１２．２２・・・・・・プリント状コイ
ル、１３゜２３・・・・・・導電体、１４．２４・・・
・・・ギャップ、１５゜２５・・・・・・外側の磁脚、
１６．２６・・・・・・中央の磁脚、１７．２７・・・
・・・磁束。
第７図
第４図
６
第６図
第７図
篤９図1 is a perspective view showing a transformer according to a first embodiment of the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is an enlarged view of the main part of FIG. 5 is a sectional view of the same, FIG. 6 is an enlarged view of FIG. 5, FIG. 7 is a perspective view of a transformer using a conventional printed coil, and FIG. is the same sectional view, and FIG. 9 is an enlarged view of FIG. 8. 10.20... E-type core, 11.21...
...I-type core, 12.22...Printed coil, 13゜23...Conductor, 14.24...
...Gap, 15°25...Outer magnetic leg,
16.26... Central magnetic leg, 17.27...
...magnetic flux. Figure 7 Figure 4 Figure 6 Figure 7 Figure Atsushi Figure 9
Claims (2)
のキャップ面が前記プリント状のコイルの平面部と直交
方向となるように構成したインダクタンス部品。(1) An inductance component consisting of a core and a printed coil, the cap surface of the core being perpendicular to the plane of the printed coil.
アの中央の磁脚にプリント状のコイルを配置し、前記Ｅ
型コアの外側の磁脚を中央の磁脚よりもＩ型コアの厚さ
分だけ長くし、前記Ｉ型コアと前記Ｅ型コアの外側の磁
脚の間にギャップを設けた請求項１記載のインダクタン
ス部品。(2) The core consists of an E-type core and an I-type core, and a printed coil is arranged on the magnetic leg in the center of the E-type core, and the
2. The magnetic legs on the outside of the core are made longer than the magnetic legs in the center by the thickness of the I-type core, and a gap is provided between the magnetic legs on the outside of the I-type core and the E-type core. inductance components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP861390A JPH03212913A (en) | 1990-01-18 | 1990-01-18 | Inductance component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP861390A JPH03212913A (en) | 1990-01-18 | 1990-01-18 | Inductance component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03212913A true JPH03212913A (en) | 1991-09-18 |
Family
ID=11697803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP861390A Pending JPH03212913A (en) | 1990-01-18 | 1990-01-18 | Inductance component |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03212913A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716433A1 (en) * | 1994-12-06 | 1996-06-12 | AT&T Corp. | High Q integrated inductor |
| US7098766B2 (en) * | 2004-01-21 | 2006-08-29 | Intel Corporation | Magnetic material for transformers and/or inductors |
| EP2051262A2 (en) * | 2007-10-16 | 2009-04-22 | Comarco Wireless Technologies, Inc. | Parallel gapped ferrite core |
| WO2010026690A1 (en) * | 2008-09-05 | 2010-03-11 | 三菱電機株式会社 | Sheet transformer for dc/dc converter |
| JP2010212271A (en) * | 2009-03-06 | 2010-09-24 | Fdk Corp | Low-profile inductor |
| CN105814653A (en) * | 2014-11-17 | 2016-07-27 | 日本梅克特隆株式会社 | Multi-part printed circuit and coil pattern inspection method |
| US10855087B1 (en) | 2004-01-15 | 2020-12-01 | Comarco Wireless Systems Llc | Power supply systems |
-
1990
- 1990-01-18 JP JP861390A patent/JPH03212913A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078382C (en) * | 1994-12-06 | 2002-01-23 | 美国电报电话公司 | High Q-factor integrated inductor |
| EP0716433A1 (en) * | 1994-12-06 | 1996-06-12 | AT&T Corp. | High Q integrated inductor |
| US10855087B1 (en) | 2004-01-15 | 2020-12-01 | Comarco Wireless Systems Llc | Power supply systems |
| US11586233B2 (en) | 2004-01-15 | 2023-02-21 | Comarco Wireless Systems Llc | Power supply systems |
| US10951042B2 (en) | 2004-01-15 | 2021-03-16 | Comarco Wireless Systems Llc | Power supply systems |
| US10855086B2 (en) | 2004-01-15 | 2020-12-01 | Comarco Wireless Systems Llc | Power supply equipment utilizing interchangeable tips to provide power and a data signal to electronic devices |
| US7098766B2 (en) * | 2004-01-21 | 2006-08-29 | Intel Corporation | Magnetic material for transformers and/or inductors |
| EP2051262A2 (en) * | 2007-10-16 | 2009-04-22 | Comarco Wireless Technologies, Inc. | Parallel gapped ferrite core |
| EP2051262A3 (en) * | 2007-10-16 | 2010-02-17 | Comarco Wireless Technologies, Inc. | Parallel gapped ferrite core |
| JP5328797B2 (en) * | 2008-09-05 | 2013-10-30 | 三菱電機株式会社 | Sheet transformer for DC / DC converter |
| WO2010026690A1 (en) * | 2008-09-05 | 2010-03-11 | 三菱電機株式会社 | Sheet transformer for dc/dc converter |
| JP2010212271A (en) * | 2009-03-06 | 2010-09-24 | Fdk Corp | Low-profile inductor |
| CN105814653A (en) * | 2014-11-17 | 2016-07-27 | 日本梅克特隆株式会社 | Multi-part printed circuit and coil pattern inspection method |
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