JPS6119111A - Choke coil - Google Patents
Choke coilInfo
- Publication number
- JPS6119111A JPS6119111A JP13795984A JP13795984A JPS6119111A JP S6119111 A JPS6119111 A JP S6119111A JP 13795984 A JP13795984 A JP 13795984A JP 13795984 A JP13795984 A JP 13795984A JP S6119111 A JPS6119111 A JP S6119111A
- Authority
- JP
- Japan
- Prior art keywords
- choke coil
- gap
- insulating
- magnetic material
- inductance
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は高周波化スイッチングレギュレータのフィルタ
回路に使用されるチョークコイルに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a choke coil used in a filter circuit of a high-frequency switching regulator.
従来、スイッチングレギュレータに使用されるチョーク
コイルは、小形でリーケージフラックスが少ないトロイ
ダルコアで直流重畳特性の良好なコア材（モリブデンパ
ーマ−ロイ等）を使用し、第１図のような巻線構造をし
ていた。 第１図において、１はコア、２は巻線である
。Traditionally, choke coils used in switching regulators have a small toroidal core with low leakage flux, a core material with good DC superimposition characteristics (such as molybdenum permalloy), and a winding structure as shown in Figure 1. Was. In FIG. 1, 1 is a core and 2 is a winding.
第２図は、第１図のチョークコイルの直流重畳特性であ
り、ある直流電流値までインダクタンスは一定の値が得
られる。FIG. 2 shows the DC superimposition characteristics of the choke coil shown in FIG. 1, and the inductance has a constant value up to a certain DC current value.
しかし現在、スイッチングレギュレータの低価格化、小
型化の要求が高まっており、その要求に対応するための
手段としてスイッチングレギュレータの高周波化が進め
られているが、第１図の如き立体的な巻線構造を有する
チョークコイルを使用した場合空間的な場所を必要とし
、又巻線をするための手作業を必要とし、低価格化、小
型化の要求を満たすことが出来ないという問題点があっ
た。また、このチョークコイルをスイッチングレギュレ
ータのフィルタ回路に使用した場合、スイッチングレギ
ュレータの負荷が変動し出力電流が減少したとき、チョ
ークコイルに流れる電流が不連続になる。その結果、出
方電圧の安定度が劣化し、また出力電圧のリフプル電圧
成分が増加するという問題点があった。However, at present, there is an increasing demand for lower prices and smaller sizes for switching regulators, and as a means to meet these demands higher frequency switching regulators are being promoted. When a choke coil with a structure is used, it requires a large space and requires manual labor to wind the coil, which has the problem of not being able to meet the demands for lower cost and smaller size. . Further, when this choke coil is used in a filter circuit of a switching regulator, when the load of the switching regulator fluctuates and the output current decreases, the current flowing through the choke coil becomes discontinuous. As a result, there are problems in that the stability of the output voltage deteriorates and the ripple voltage component of the output voltage increases.
本発明はこのような点に鑑みてなされたものであり、そ
の目的とするところは、小型で安価、かつ出力電圧の安
定度が劣化しないチョークコイルを提供することにある
。The present invention has been made in view of these points, and an object of the present invention is to provide a choke coil that is small, inexpensive, and does not deteriorate the stability of the output voltage.
このような目的を達成するために本発明は、絶縁板に設
けられた金属印刷配線と絶縁材料のスルーホールとを接
続することにより、第１および第２の磁性材料に対する
巻線を形成せしめたものである。In order to achieve such an object, the present invention forms windings for first and second magnetic materials by connecting printed metal wiring provided on an insulating plate and through holes in an insulating material. It is something.
本発明を実施例に基づき詳細に説明する。第３図に本発
明に係わるチョークコイルの一実施例の斜視図を示し、
第４図にその分解斜視図を示す。The present invention will be explained in detail based on examples. FIG. 3 shows a perspective view of an embodiment of the choke coil according to the present invention,
FIG. 4 shows an exploded perspective view.
第３図において、１１．１２は表面に金属印刷配線が形
成された絶縁板、１５は絶縁板１１．１２に挟まれた絶
縁材料、３ａ、 ３ｂは絶縁材料１５に埋め込まれた磁
性材料、４ａ、 ４ｂ、 ４ｃｍ、 ・・・は絶縁板
１１の表面に形成された金属印刷配線である。第４図に
おいて、５ａ、 ！５ｂ、 ５ｃ・・・は絶縁板１２の
表面（図で下面）に形成された金属印刷配線、６ａ、
６ｂ、 ６ｃ、 ・・・は金属印刷配線４ａ、 ４ｂ
、 ４ｃ、 ・・・と５ａ、 ’５ｂ、 ５ｃ、・・
・とを接続するために絶縁材料Ｉ５に設けられたスルー
ホール、６ａ−１，６ｂ−１，６ｃｍ１．・・・は金属
印刷配線４ａ、 ４ｂ、 ４ｃ、 ・・・とスルーボ
ール６ａ、 ６ｂ、 ６ｃ、 ・・・とを接続するた
めに絶縁板１１に設けらｈ タス／Ｌ／ −＊ −）Ｌ
ｉ、６ａ−２，６ｂ−２，６ｃｍ２゜・・・は金属印刷
配線５ａ、 ５ｂ、 ５ｃ、 ・・・とスルー ；ｈ
−ル６ａ、 ６ｂ、 ６ｃ、 ・・・とを接続する
ために絶縁板１２に設けられたスルーホール、１４は磁
性材料３ｂのギヤノブに挿入された高透磁率材料である
。In FIG. 3, 11.12 is an insulating plate with metal printed wiring formed on its surface, 15 is an insulating material sandwiched between the insulating plates 11.12, 3a and 3b are magnetic materials embedded in the insulating material 15, and 4a , 4b, 4cm, . . . are metal printed wirings formed on the surface of the insulating plate 11. In Figure 4, 5a, ! 5b, 5c... are metal printed wiring formed on the surface (lower surface in the figure) of the insulating plate 12, 6a,
6b, 6c, ... are metal printed wiring 4a, 4b
, 4c, ... and 5a, '5b, 5c, ...
6a-1, 6b-1, 6cm1. ... are provided on the insulating plate 11 to connect the metal printed wirings 4a, 4b, 4c, ... and the through balls 6a, 6b, 6c, ....
i, 6a-2, 6b-2, 6cm2゜... is through with metal printed wiring 5a, 5b, 5c,... ;h
- The through holes 14 provided in the insulating plate 12 for connecting the wheels 6a, 6b, 6c, . . . are made of a high magnetic permeability material inserted into the gear knob of the magnetic material 3b.
次にこのチョークコイルの構造について第４図を用いて
説明する。磁性材料３ａ、 ３ｂと絶縁材料１５はとも
に絶縁板１１．１２に挟み込まれ、金属印刷配線４ａは
スルーホール６ａを介して金属印刷配線５ａに接続され
、金属印刷配線５ａはスルーホール６ｂを介して金属印
刷配線４ｂに接続されているので、金属印刷配線４ａ、
スルーホール６ａ、金属印刷配線５ａ。Next, the structure of this choke coil will be explained using FIG. 4. The magnetic materials 3a, 3b and the insulating material 15 are both sandwiched between the insulating plates 11.12, the printed metal wiring 4a is connected to the printed metal wiring 5a via the through hole 6a, and the printed metal wiring 5a is connected to the printed metal wiring 5a via the through hole 6b. Since it is connected to the metal printed wiring 4b, the metal printed wiring 4a,
Through hole 6a, metal printed wiring 5a.
スルーホール６ｂおよび金属印刷配線４ｂにより構成さ
れる電線路により、磁性材料３ａ、 ３ｂの周囲に一回
巻線が形成されることになる。同様な接続を複数回繰り
返せば複数回巻線が形成されることになる。このように
して必要なインダクタンスを得ることができる。また絶
縁板１１．１２には金属印刷配線がなされた回路（図示
されていない）を設け、チョークコイルとこの回路との
接続を予め金属印刷配線により完了しておけば、接続作
業が不要となる効果がある。A single winding is formed around the magnetic materials 3a and 3b by the electric line constituted by the through hole 6b and the printed metal wiring 4b. If similar connections are repeated multiple times, multiple windings will be formed. In this way, the necessary inductance can be obtained. In addition, if a circuit (not shown) with printed metal wiring is provided on the insulating plates 11 and 12, and the connection between the choke coil and this circuit is completed in advance using printed metal wiring, connection work will be unnecessary. effective.
次に直流重畳特性について第４図、第５図を用いて説明
する。第４図に示すように、磁性材料３ａはギャップな
しで、磁性材料３ｂはギャップに高透磁率材料１４を挿
入している。このように構成され、上述した巻線構造を
有するチョークコイルのインダクタンスは、まずチョー
クコイルに流れる直流重畳電流が高透磁率材料１４が磁
気飽和しない直流重畳電流値以下の場合、磁性材料３ａ
、磁性材料３ｂおよび高透磁率材料１４の透磁率で決定
されるインダクタンスとなり、その値は第５図に示す直
流重畳電流０〜Ｉａに対応する値Ｈａとなる。チョーク
コイルに流れる直流重畳電流が増加し、高透磁率材料１
４が磁気飽和すると、チョークコイルのインダクタンス
は、磁性材料３ａおよび磁性材料３ｂの透磁率で決定さ
れるインダクタンスとなり、その値は第５図の直流重畳
電流Ｉａ〜Ｉｂに対応する値Ｈｂとなる。次にチョーク
コイルに流れる直流重畳電流が増加し、磁性材料３ａｌ
ｉ＜磁気飽和すると、チョークコイルのインダクタンス
は、磁性材料３ｂの透磁率で決定されるインダクタンス
となり、その値は第５図の直流重畳電流Ｉｂ＝Ｉｃに対
応する値Ｈｃとなる。このようにチョークコイルのイン
ダクタンスは、直流重畳電流が少なければ少ないほど極
端に増加する。Next, the DC superimposition characteristics will be explained using FIGS. 4 and 5. As shown in FIG. 4, the magnetic material 3a has no gap, and the magnetic material 3b has a high magnetic permeability material 14 inserted into the gap. The inductance of the choke coil configured in this manner and having the above-described winding structure is such that, first, when the DC superimposed current flowing through the choke coil is less than the DC superimposed current value at which the high magnetic permeability material 14 is not magnetically saturated, the magnetic material 3a
, the inductance is determined by the magnetic permeability of the magnetic material 3b and the high magnetic permeability material 14, and its value is a value Ha corresponding to the DC superimposed current 0 to Ia shown in FIG. The DC superimposed current flowing through the choke coil increases, and the high magnetic permeability material 1
4 becomes magnetically saturated, the inductance of the choke coil becomes an inductance determined by the magnetic permeability of the magnetic material 3a and the magnetic material 3b, and its value becomes a value Hb corresponding to the DC superimposed currents Ia to Ib in FIG. Next, the DC superimposed current flowing through the choke coil increases, and the magnetic material 3al
When i<magnetic saturation, the inductance of the choke coil becomes an inductance determined by the magnetic permeability of the magnetic material 3b, and its value becomes a value Hc corresponding to the DC superimposed current Ib=Ic in FIG. 5. In this way, the inductance of the choke coil increases dramatically as the DC superimposed current decreases.
以上述べたように本発明は、巻線の一部と回路が金属印
刷配線として形成された絶縁板と、この絶縁板に挟まれ
スルーホールを有する絶縁材料と、この絶縁材料に埋め
込まれたギャップ付きの第１の磁性材料とギャップなし
の第２の磁性材料とを一体化した構造とすることにより
、接続作業。As described above, the present invention includes an insulating plate on which a part of the winding and a circuit are formed as printed metal wiring, an insulating material sandwiched between the insulating plates and having a through hole, and a gap embedded in the insulating material. The first magnetic material with a gap and the second magnetic material without a gap are integrated into a structure, which facilitates connection work.
巻線作業等がなくなるとともに実装方法が平面的となる
ようにしたので、スイッチングレギュレータに用いた場
合に低価格化、小型化を実現できる効果がある。またチ
ョークコイルのインダクタンスを直流重畳電流が少なけ
れば少ないほど極端に増加するようにしたので、本発明
をスイッチングレギュレータのフィルタ回路に適用した
場合、スイッチングレギュレータの負荷が変動して出力
電流が減少しチョークコイルに流れる電流が減少しても
、チョークコイルに流れる電流が不連続になりにくくな
り、出力電圧の安定度が劣化せず出力電圧のリップル成
分が増加しにくくなる効果がある。Since winding work and the like are eliminated and the mounting method is planar, it has the effect of realizing lower cost and smaller size when used in a switching regulator. In addition, the inductance of the choke coil is made to increase dramatically as the DC superimposed current decreases, so when the present invention is applied to a filter circuit of a switching regulator, the load of the switching regulator fluctuates and the output current decreases, resulting in a choke coil. Even if the current flowing through the coil decreases, the current flowing through the choke coil is less likely to become discontinuous, so the stability of the output voltage does not deteriorate and the ripple component of the output voltage is less likely to increase.
第１図は従来のチョークコイルを示す平面図、第２図は
そのインダクタンスの直流重畳電流特性を示す電流特性
図、第３図は本発明に係わるチョークコイルの斜視図、
第４図はその分解斜視図、第５図はそのインダクタンス
の直流重畳電流特性を示す電流特性図である。
３ａ、３ｂ・・・・磁性材料、 ４ａ、 ４ｂ、 ４ｃ
、 ５ａ、 ５ｂ、５ｃｍ金属印刷配線、６ａ、 ６ｂ
、 ６ｃ、 ６ａ−１゜６ｂ−１，６ｃｍ１．６ａ−２
，６ｂ−２，６ｃｍ２・・・・スルーホール、１１．１
２・・・・絶縁板、１４・・・・高透磁率材料、１５・
・・・絶縁材料。FIG. 1 is a plan view showing a conventional choke coil, FIG. 2 is a current characteristic diagram showing the DC superimposed current characteristics of its inductance, and FIG. 3 is a perspective view of a choke coil according to the present invention.
FIG. 4 is an exploded perspective view of the same, and FIG. 5 is a current characteristic diagram showing the DC superimposed current characteristics of the inductance. 3a, 3b...magnetic material, 4a, 4b, 4c
, 5a, 5b, 5cm metal printed wiring, 6a, 6b
, 6c, 6a-1゜6b-1, 6cm1.6a-2
, 6b-2, 6cm2...Through hole, 11.1
2... Insulating plate, 14... High magnetic permeability material, 15...
...Insulating material.
Claims (1)
挟まれた絶縁材料と、前記絶縁材料に埋め込まれた第１
および第２の磁性材料とを具備してなり、前記第１の絶
縁板は巻線の一部を構成するための第１の金属印刷配線
を有し、前記第２の絶縁板は巻線の一部を構成するため
の第２の金属印刷配線を有し、前記第１および第２の絶
縁板の少なくともいずれかは金属印刷配線された回路を
有し、前記絶縁材料は巻線を構成するために前記第１と
第２の金属印刷配線を電気的に接続するスルーホールを
有し、前記第１の磁性材料は断面の一部にギャップを設
けたトロイダル形状をなし、前記第２の磁性材料は前記
第１の磁性材料のギャップに挿入され、前記第１および
第２の磁性材料によるインダクタンスが直流重畳電流の
減少により大きく増加することを特徴とするチョークコ
イル。first and second insulating plates, an insulating material sandwiched between the first and second insulating plates, and a first insulating material embedded in the insulating material.
and a second magnetic material, the first insulating plate has a first metal printed wiring to constitute a part of the winding, and the second insulating plate includes a first metal printed wiring for forming a part of the winding. a second printed metal wiring for forming a part of the insulating material, at least one of the first and second insulating plates has a printed metal circuit, and the insulating material forms a winding. The first magnetic material has a toroidal shape with a gap in a part of the cross section, and the second magnetic material has a through hole for electrically connecting the first and second printed metal wiring. A choke coil characterized in that a material is inserted into the gap of the first magnetic material, and the inductance due to the first and second magnetic materials increases significantly due to a reduction in DC superimposed current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13795984A JPS6119111A (en) | 1984-07-05 | 1984-07-05 | Choke coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13795984A JPS6119111A (en) | 1984-07-05 | 1984-07-05 | Choke coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6119111A true JPS6119111A (en) | 1986-01-28 |
Family
ID=15210721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13795984A Pending JPS6119111A (en) | 1984-07-05 | 1984-07-05 | Choke coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6119111A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02161751A (en) * | 1989-10-30 | 1990-06-21 | Toshiba Corp | Manufacture of semiconductor device |
| JP2009068529A (en) * | 2007-09-11 | 2009-04-02 | Sanki:Kk | Clip |
| US8905106B2 (en) | 2011-01-12 | 2014-12-09 | Bridgestone Corporation | Rubber member joining device |
-
1984
- 1984-07-05 JP JP13795984A patent/JPS6119111A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02161751A (en) * | 1989-10-30 | 1990-06-21 | Toshiba Corp | Manufacture of semiconductor device |
| JP2009068529A (en) * | 2007-09-11 | 2009-04-02 | Sanki:Kk | Clip |
| US8905106B2 (en) | 2011-01-12 | 2014-12-09 | Bridgestone Corporation | Rubber member joining device |
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