JP2961427B2 - High frequency winding component and switching power supply using the same - Google Patents
High frequency winding component and switching power supply using the sameInfo
- Publication number
- JP2961427B2 JP2961427B2 JP34424789A JP34424789A JP2961427B2 JP 2961427 B2 JP2961427 B2 JP 2961427B2 JP 34424789 A JP34424789 A JP 34424789A JP 34424789 A JP34424789 A JP 34424789A JP 2961427 B2 JP2961427 B2 JP 2961427B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- winding
- winding component
- power supply
- resistivity
- 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.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 title claims description 59
- 239000004020 conductor Substances 0.000 claims description 38
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 230000002500 effect on skin Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000000470 constituent Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Description
【発明の詳細な説明】 イ．発明の目的 （産業上の利用分野） 本発明は、DC−DCコンバータに用いられる高周波用ト
ランス等の高周波巻線部品の改良に係る。その結果とし
てこれを用いた低損失なコンバータが得られる。さらに
高周波用トランスの他、チョークコイル、インダクタ等
の巻線に関する高周波巻線部品に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a high-frequency winding component such as a high-frequency transformer used in a DC-DC converter. As a result, a low-loss converter using this can be obtained. Furthermore, the present invention relates to a high-frequency winding component related to a winding of a choke coil, an inductor and the like, in addition to a high-frequency transformer.
（従来の技術） 従来、フェライトメーカー等から提供された技術資料
にも示されているように、高周波用トランスに利用され
る材料特性として、空気中に置かれた１本の導線におけ
る表皮効果しか考慮されていなかった。(Prior art) Conventionally, as shown in technical data provided by a ferrite maker or the like, as a material characteristic used for a high-frequency transformer, only the skin effect of a single conductor placed in the air is used. Was not taken into account.
しかし現実には高周波巻線部品は巻枠の限られた空間
内に複数の巻線が相互に作用を及ぼしながら設置されて
いる。However, in reality, a high-frequency winding component is installed in a limited space of a winding frame while a plurality of windings interact with each other.
そこで、前記データを用いて設計した高周波用トラン
スを組み込んだDC−DCコンバータは現実とは掛け離れ損
失が大きいものであった。Therefore, a DC-DC converter incorporating a high-frequency transformer designed using the above data has a large loss far from reality.
なお、従来の常識としては、巻線は抵抗値の低い銅線
を用い、かつ10本以下の並列巻きにするのが通常であっ
た。As a conventional common sense, it is usual to use a copper wire having a low resistance value as the winding and to make ten or less parallel windings.
ここで、並列巻きとは一般に複数本の巻線を並列に束
ねたり、撚り合わせたりして１本の集合線として巻枠に
捲回するものである。巻枠のいわゆるピンへのからげの
容易さからせいぜい10本以下が従来の例であった。Here, the term "parallel winding" generally refers to a method in which a plurality of windings are bundled in parallel or twisted and wound around a bobbin as one collective wire. Conventionally, at most 10 or less were used because of the ease with which the winding frame could be attached to the pins.
（発明が解決しようとする課題） しかしながら、高周波領域にあっては巻線の高周波抵
抗（損失に関連）は、導体の抵抗率、周波数の他に、導
体が存在している場所の交流的磁束密度に依存する。こ
の結果、高周波抵抗の増加が顕著となり必ずしも目的を
充分に達成することが出来なかった。(Problems to be Solved by the Invention) However, in the high-frequency region, the high-frequency resistance (related to loss) of the winding is determined not only by the resistivity and frequency of the conductor, but also by the AC magnetic flux at the place where the conductor exists. Depends on density. As a result, the increase in the high-frequency resistance became remarkable, and the object could not always be sufficiently achieved.
高周波抵抗は直流抵抗に比べ大幅に増加する。この原
因の一つは表皮効果であり、他の一つは近接効果に基づ
くが、これらに本発明者等は着目した。The high-frequency resistance increases significantly compared to the DC resistance. One of the causes is the skin effect, and the other is based on the proximity effect, which the present inventors have paid attention to.
表皮効果は導体に高周波電流が流れると、導体の軸方
向に対して自ら作り出す導体内部及び導体外部の磁力線
により電流が導体表面に集中して流れる現象として知ら
れている。また、近接効果は複数の導体が互いに近接し
て存在するときに、両導体の軸方向に対して垂直な面に
於いて、電流値が両導体の互いに接近した部分から外側
に向かって増加して変化する現象である。The skin effect is known as a phenomenon in which when a high-frequency current flows through a conductor, current concentrates on the surface of the conductor due to lines of magnetic force inside and outside the conductor that are created by themselves in the axial direction of the conductor. In addition, the proximity effect is such that when a plurality of conductors exist close to each other, the current value increases in a plane perpendicular to the axial direction of the two conductors from a portion where the two conductors are close to each other outward. It is a phenomenon that changes.
これら２つの、高周波抵抗を増加させる原因は、電磁
気学的に見ると、導体内のそれぞれの点における電流と
磁場の相互作用として統一的に考えることができる。The two causes of the increase in the high-frequency resistance can be considered as an interaction between the current and the magnetic field at each point in the conductor from the viewpoint of electromagnetism.
そこで、表皮効果と近接効果の総和としての抵抗比R
AC/RDC（RACは交流抵抗値、RDCは直流抵抗値）の計算式
を導出した。その結果以下の通りとすれば損失の少な
い、より小型、軽量、高効率な高周波トランス等の高周
波巻線部品を得ることを見い出した。Therefore, the resistance ratio R as the sum of the skin effect and the proximity effect
The calculation formula of AC / R DC (R AC is AC resistance value, R DC is DC resistance value) was derived. As a result, they have found that a high-frequency winding component such as a high-frequency transformer and the like that is smaller, lighter, and more efficient with less loss can be obtained as follows.
すなわち、その損失低減策としては、１ターン当た
りの並列巻線数（以下、パラ数という）を所定範囲以上
にする。この値としては50以上が適当である。従来はせ
いぜい10程度以下であった。銅に比べ1.5倍以上の抵
抗率の巻線材質とする。この例としてはアルミニウムが
適当である。巻線導体間の距離をある程度開ける。具
体的には、絶縁被覆を厚いものにする等近接効果を減少
させる。That is, as a measure to reduce the loss, the number of parallel windings per turn (hereinafter referred to as the number of paras) is set to a predetermined range or more. A value of 50 or more is appropriate as this value. Conventionally, it was at most about 10 or less. Use a winding material with a resistivity 1.5 times or more higher than copper. Aluminum is suitable for this example. Increase the distance between the winding conductors to some extent. Specifically, the proximity effect is reduced, for example, by increasing the thickness of the insulating coating.
したがって、本発明の目的は上記課題に鑑み、従来欠
点を解消し、高周波巻線部品、例えば、トランス内部の
漏れ磁束を考慮し、高周波抵抗を低減させた高周波トラ
ンス等の高周波巻線部品及びこれを用いたスイッチング
電源を提供することにある。Therefore, an object of the present invention is to solve the conventional disadvantages in view of the above problems, and to solve high frequency winding components, for example, a high frequency winding component such as a high frequency transformer having a reduced high frequency resistance in consideration of the leakage magnetic flux inside the transformer, and And a switching power supply using the same.
ロ．発明の構成 （課題を解決するための手段） 上記目的を達成するためには、本発明の高周波巻線部
品は、100KHz以上の電流を流す高周波巻線部品であり、
該高周波巻線部品の巻枠内部の導体を、巻枠の１ターン
当たりの導体並列本数（パラ数）を15以上磁心に捲回さ
せた巻線とし、室温で抵抗率が2.5×10-8Ωｍ以上かつ
非磁性材料からなる巻線を用いたことを特徴とする高周
波巻線部品によって提供される。B. Configuration of the Invention (Means for Solving the Problems) In order to achieve the above object, a high-frequency winding component of the present invention is a high-frequency winding component that passes a current of 100 KHz or more,
The conductor inside the bobbin of the high-frequency winding component is a coil wound around a magnetic core with 15 or more parallel conductors (para number) per turn of the bobbin, and has a resistivity of 2.5 × 10 −8 at room temperature. Provided is a high-frequency winding component using a winding of Ωm or more and made of a nonmagnetic material.
また、前記巻線が銅の含有量が99％以下である銅合金
又はアルミニウムを主構成元素とした合金からなる場合
に、さらに、前記巻線の透磁率が10以下である場合に、
さらにまた、巻線導体間に絶縁性空隙を介在させた前記
高周波巻線部品により提供される。Further, when the winding is made of a copper alloy having a copper content of 99% or less or an alloy containing aluminum as a main constituent element, further, when the magnetic permeability of the winding is 10 or less,
Still further, the present invention provides the high-frequency winding component having an insulating gap interposed between the winding conductors.
さらに、直流電源、スイッチング回路、トランス、整
流回路及び平滑回路を有し巻線部品に前記の高周波巻線
部品を用いたことを特徴とするスイッチング電源として
の利用で効果的に提供される。Further, the present invention can be effectively provided by being used as a switching power supply having a DC power supply, a switching circuit, a transformer, a rectifier circuit, and a smoothing circuit, and using the high-frequency winding component as a winding component.
（作用） 本発明の高周波巻線部品によれば、高周波、例えば10
0KHz以上での高周波抵抗を低減できるものである。その
理由としては、表皮効果及び巻線間の近接効果による高
周波抵抗を低減できるためである。すなわち、導体（銅
線）の一部分をミクロ的に見た場合には、その微小部分
での、磁束密度の大きさによってその微小部分の高周波
抵抗が決定される。これに対して、前述のないしに
示した高周波抵抗低減策を講ずることにより顕著な効果
が確認された。(Operation) According to the high-frequency winding component of the present invention, high-frequency, for example, 10
High-frequency resistance at 0 KHz or higher can be reduced. The reason is that high-frequency resistance due to the skin effect and the proximity effect between windings can be reduced. That is, when a portion of the conductor (copper wire) is viewed microscopically, the high frequency resistance of the minute portion is determined by the magnitude of the magnetic flux density in the minute portion. On the other hand, a remarkable effect was confirmed by taking the above-mentioned or the above-described measures for reducing the high-frequency resistance.
さらに、スイッチング電源は小型、軽量にもかかわら
ず、高効率なインバータとして機能し温度上昇の面で顕
著な低減効果が確認された。Further, the switching power supply functions as a highly efficient inverter despite its small size and light weight, and a remarkable reduction effect in terms of temperature rise was confirmed.
（実施例） 本発明の高周波巻線部品の一例として高周波トランス
について図面を参照して説明するが、本発明はこれらの
実施例に限定されるものではない。高周波巻線部品とし
ては、このほか、高周波用チョークコイル、インダクタ
のいずれかについても実施可能で同レベルの効果を発揮
することが認められた。したがって、高周波巻線部品と
しては以下に高周波トランスを用いた実施例を具体的に
説明する。なお、チョークコイル、インダクタ等につい
ても高周波化に伴い小型化ができ、本発明においてはノ
イズ面、回路の簡略化、過渡応答等に優れた効果を発揮
できる。(Example) A high-frequency transformer will be described as an example of a high-frequency winding component of the present invention with reference to the drawings, but the present invention is not limited to these examples. In addition, as a high-frequency winding component, it was confirmed that any one of a high-frequency choke coil and an inductor could be implemented and exhibited the same level of effect. Therefore, an embodiment using a high-frequency transformer as a high-frequency winding component will be specifically described below. In addition, the choke coil, the inductor, and the like can be miniaturized with the increase in the frequency, and the present invention can exhibit excellent effects on the noise surface, the simplification of the circuit, the transient response, and the like.
実施例１ 第１図は本発明について高周波抵抗の解析のため巻枠
１に導体を断面形状正方形にして巻き込んだものであ
る。巻枠断面２は４×4mm、平均磁路長50mm、巻数４タ
ーン（Ｔ）とし、導体は巻枠１の内部に一様に分布して
いるものとして、１ターン当たりの導体並列本数と周波
数を変えた場合の高周波抵抗の変化を確認した。Example 1 FIG. 1 shows a conductor wound into a bobbin 1 with a square cross section for analysis of high-frequency resistance according to the present invention. The winding frame cross section 2 is 4 × 4 mm, the average magnetic path length is 50 mm, the number of turns is 4 turns (T), and the conductors are uniformly distributed inside the winding frame 1. The change in the high-frequency resistance when the value was changed was confirmed.
導体並列本数を変える場合には合計した断面積が略等
しくなるように線材の太さを選定した。その結果を第２
図ないし第４図に示した。これに用いた導体材質は銅
線、アルミニウム線、銅合金線及びアルミニウム合金線
であった。When changing the number of parallel conductors, the thickness of the wire was selected so that the total cross-sectional area was substantially equal. The result is
This is shown in FIGS. The conductor material used for this was a copper wire, an aluminum wire, a copper alloy wire, and an aluminum alloy wire.
ここで、横軸に１ターン当たりの導体並列本数（パラ
数）を、縦軸に高周波抵抗をとった。パラメータは周波
数を10〜500KHzとして高周波抵抗とパラ数との関係図を
第２図に示した。Here, the horizontal axis represents the number of parallel conductors (para number) per turn, and the vertical axis represents high-frequency resistance. FIG. 2 shows a relationship diagram between the high-frequency resistance and the para number, with the parameter being a frequency of 10 to 500 KHz.
ここでは、導体の抵抗値を固定した場合の導体並列本
数（パラ数）と高周波抵抗の関係を示し、各周波数に対
し、特定のパラ数における抵抗値の最大点が存在する。
特に100KHz以上でその傾向が顕著となっている。従来か
ら言われていた、電流値の増加に対し５ないし10本の導
体を並列にして損失を低下させようとした処置はかえっ
て悪影響を呈することを明らかにしている。Here, the relationship between the number of parallel conductors (para number) and the high-frequency resistance when the resistance value of the conductor is fixed is shown, and there is a maximum point of the resistance value at a specific para number for each frequency.
In particular, the tendency becomes remarkable at 100 KHz or more. It has been clarified that the conventional measures to reduce the loss by increasing the current value by connecting 5 to 10 conductors in parallel have an adverse effect.
また、第３図は、第１図の導体について縦軸を高周波
抵抗、横軸をパラ数とした関係図である。周波数を200K
Hzに固定した場合で銅の抵抗率を１とし他の導体の抵抗
率を相対比としたパラメータで示した。FIG. 3 is a relational diagram of the conductor of FIG. 1 with the vertical axis representing high-frequency resistance and the horizontal axis representing para numbers. 200K frequency
When the frequency was fixed to Hz, the resistivity was expressed as a parameter in which the resistivity of copper was 1 and the resistivity of other conductors was a relative ratio.
ここで、周波数を200KHzにおいてはパラ数が15以上の
領域では抵抗率が大きい程高周波抵抗が小さい傾向にあ
ることがわかる。Here, when the frequency is 200 KHz, in a region where the para number is 15 or more, the higher the resistivity, the lower the high-frequency resistance tends to be.
さらにパラ数が50以上の領域では抵抗率の大小による
高周波抵抗の減少傾向は小さく、かつ、銅の抵抗率（図
で１）に比べ顕著に差異を示していることがわかる。ま
た、周波数を200KHzにした場合を示したが、一般に100K
Hz以上でこの傾向が認められる。この結果、高周波巻線
部品としての導体としてパラ数が50以上の領域で設計す
ることが適当である。Further, in the region where the number of paras is 50 or more, it can be seen that the tendency of the decrease in the high-frequency resistance due to the magnitude of the resistivity is small and that it is significantly different from the resistivity of copper (1 in the figure). Also, the case where the frequency is set to 200 KHz is shown.
This tendency is observed above Hz. As a result, it is appropriate to design a conductor as a high-frequency winding component in a region where the number of paras is 50 or more.
また、第４図は、第１図の導体について縦軸を高周波
抵抗、横軸を銅の抵抗率を１とし他の導体の抵抗率を相
対比とした関係図である。FIG. 4 is a relationship diagram of the conductor of FIG. 1 in which the vertical axis represents the high-frequency resistance, the horizontal axis represents the resistivity of copper as 1, and the resistivity of the other conductors as a relative ratio.
パラ数を40本、周波数を200KHzに固定した場合で銅の
抵抗率を１とし他の導体の抵抗率を相対比としたパラメ
ータで示した。When the number of paras was fixed at 40 and the frequency was fixed at 200 kHz, the resistivity was indicated by a parameter in which the resistivity of copper was 1 and the resistivity of other conductors was a relative ratio.
ここで、銅の抵抗率を１とし他の導体の抵抗率を相対
比として1.5倍とした場合には高周波抵抗は約80％、２
倍の場合には高周波抵抗は約55％に減少することが認め
られる。この結果高周波巻線部品に適用することによ
り、大幅に損失を低下させることが可能となる。Here, when the resistivity of copper is 1 and the resistivity of the other conductor is 1.5 times as a relative ratio, the high-frequency resistance is about 80%, 2
In the case of twice, it is recognized that the high frequency resistance is reduced to about 55%. As a result, by applying the present invention to a high-frequency winding component, the loss can be significantly reduced.
一般に銅の室温（20℃）での抵抗率は1.72×10-8Ωｍ
であり、導体としては室温で抵抗率が2.5×10-8Ωｍ以
上かつ非磁性材料が適当である。Generally, the resistivity of copper at room temperature (20 ° C) is 1.72 × 10 -8 Ωm
As the conductor, a nonmagnetic material having a resistivity of 2.5 × 10 −8 Ωm or more at room temperature is suitable.
なお、銅の含有量が99％以下である銅合金を巻線とし
て用いた場合にも前記抵抗率の条件に合致した場合には
高周波抵抗を低減できることが確認された。It was also confirmed that high-frequency resistance can be reduced when a copper alloy having a copper content of 99% or less is used as a winding when the above resistivity condition is met.
同様に、アルミニウムを主構成元素とした合金である
場合や、銅合金はアルミニウム青銅である場合に効果が
確認された。Similarly, the effect was confirmed in the case of an alloy containing aluminum as a main constituent element and in the case of a copper alloy being aluminum bronze.
さらに、導体は実質的に非磁性材料であればよく、例
えばの透磁率が10以下、望ましくは５以下であれば用い
ることが可能であることが確認された。Furthermore, it has been confirmed that the conductor may be any material as long as it is substantially a non-magnetic material, for example, if the magnetic permeability is 10 or less, preferably 5 or less.
実施例２ 第５図は本発明による高周波抵抗を低減した高周波巻
線部品として高周波トランスを一例として用いた直列共
振型コンバータの主要部の概要図である。Embodiment 2 FIG. 5 is a schematic diagram of a main part of a series resonance type converter using a high-frequency transformer as an example of a high-frequency winding component with reduced high-frequency resistance according to the present invention.
直流電源11を高周波トランス16を介して再度直流電源
として利用するDC−DCコンバータの例で、スイッチング
素子12、13、高周波チョーク14、コンデンサ15、整流用
ダイオード17、18及び平滑用コンデンサ19からなる共振
型コンバータを構成した。This is an example of a DC-DC converter that uses the DC power supply 11 again as a DC power supply via a high-frequency transformer 16, and includes switching elements 12, 13, a high-frequency choke 14, a capacitor 15, rectifying diodes 17, 18, and a smoothing capacitor 19. A resonant converter was constructed.
本発明の高周波トランスにおいては、コンバータ出力
からの高調波ノイズは極めて少ないレベルであった。In the high-frequency transformer of the present invention, the harmonic noise from the converter output was at a very low level.
（発明の効果） 本発明の高周波巻線部品によれば、従来例に比べ、高
周波抵抗を低減することができる効果があり、従来問題
であった表皮効果及び近接効果を顕著に低減させること
ができる。(Effect of the Invention) According to the high-frequency winding component of the present invention, there is an effect that the high-frequency resistance can be reduced as compared with the conventional example, and the skin effect and the proximity effect, which have been the conventional problems, can be significantly reduced. it can.
さらに、これを用いた高周波領域で用いることが可能
なコンバータは小型、軽量、高調波ノイズを低減させる
とともに、高効率のコンバータとして機能し温度上昇の
面で顕著な低減効果を確認された。In addition, a converter that can be used in a high-frequency region using the same reduced size, reduced weight, reduced harmonic noise, and functioned as a high-efficiency converter, confirming a remarkable reduction in temperature rise.
請求項１記載の発明によれば、高周波巻線部品は100K
Hz以上の周波数で、所定の抵抗率及び非磁性材料の選択
により高周波抵抗の低減率を大きくとれ、トランス内部
の漏れ磁束を低減させることができた。請求項２、３記
載の発明によれば、さらにこの低減効果が期待できる。According to the first aspect of the present invention, the high-frequency winding component is 100K.
At a frequency of more than Hz, the reduction rate of the high-frequency resistance can be increased by selecting a predetermined resistivity and a non-magnetic material, and the leakage magnetic flux inside the transformer can be reduced. According to the second and third aspects of the present invention, this reduction effect can be further expected.
第１図は本発明の一実施例を示す高周波トランス用導体
（銅線）部分構成図、第２図は高周波抵抗とパラ数との
関係図、第３図は、銅その他導体についての高周波抵抗
とパラ数の関係図、第４図は、銅その他導体についての
抵抗率と高周波抵抗の関係図、第５図は本発明により高
周波抵抗を低減した高周波トランスを用いた直列共振型
DC−DCコンバータの主要部の概要図である。 1:巻枠、2:巻枠断面 11:直流電源 12、13:スイッチング素子 14:チョーク、15、19:コンデンサ 15、19:コンデンサ 16:高周波トランス 17、18:ダイオードFIG. 1 is a partial configuration diagram of a conductor (copper wire) for a high-frequency transformer showing one embodiment of the present invention, FIG. 2 is a diagram showing the relationship between high-frequency resistance and the number of paras, and FIG. FIG. 4 is a graph showing the relationship between resistivity and high-frequency resistance of copper and other conductors, and FIG. 5 is a series resonance type using a high-frequency transformer having a reduced high-frequency resistance according to the present invention.
It is a schematic diagram of the main part of a DC-DC converter. 1: Reel, 2: Reel cross section 11: DC power supply 12, 13: Switching element 14: Choke, 15, 19: Capacitor 15, 19: Capacitor 16: High frequency transformer 17, 18: Diode
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−254714（ＪＰ，Ａ) 実開 昭62−126814（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01F 27/28 H01F 31/00 H01F 17/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-254714 (JP, A) JP-A-62-126814 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H01F 27/28 H01F 31/00 H01F 17/00
Claims (5)
あり、該高周波巻線部品の巻枠内部の導体を、巻枠の１
ターン当たりの導体並列本数（パラ数）を15以上磁心に
捲回させた巻線とし、室温で抵抗率が2.5×10-8Ωｍ以
上かつ非磁性材料からなる巻線を用いたことを特徴とす
る高周波巻線部品。1. A high-frequency winding component for passing a current of 100 KHz or more, wherein a conductor inside a winding frame of the high-frequency winding component is connected to one of the winding frames.
It is characterized by using a winding wound around a magnetic core with more than 15 parallel conductors (para number) per turn, and using a winding made of non-magnetic material with a resistivity of 2.5 × 10 -8 Ωm or more at room temperature. High frequency winding parts.
合金又はアルミニウムを主構成元素とした合金からなる
請求項１記載の高周波巻線部品。2. The high-frequency winding component according to claim 1, wherein the winding is made of a copper alloy having a copper content of 99% or less or an alloy mainly containing aluminum.
又は請求項２記載の高周波巻線部品。3. The winding according to claim 1, wherein the permeability of the winding is 10 or less.
Or the high frequency winding component according to claim 2.
項１ないし請求項３のいずれかに記載の高周波巻線部
品。4. The high-frequency winding component according to claim 1, wherein an insulating gap is interposed between the winding conductors.
整流回路及び平滑回路を有し巻線部品に請求項１ないし
請求項４のいずれかに記載の前記高周波巻線部品を用い
たことを特徴とするスイッチング電源。5. A DC power supply, a switching circuit, a transformer,
A switching power supply comprising a rectifier circuit and a smoothing circuit, wherein the high-frequency winding component according to claim 1 is used as a winding component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34424789A JP2961427B2 (en) | 1989-12-30 | 1989-12-30 | High frequency winding component and switching power supply using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34424789A JP2961427B2 (en) | 1989-12-30 | 1989-12-30 | High frequency winding component and switching power supply using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04706A JPH04706A (en) | 1992-01-06 |
| JP2961427B2 true JP2961427B2 (en) | 1999-10-12 |
Family
ID=18367770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34424789A Expired - Fee Related JP2961427B2 (en) | 1989-12-30 | 1989-12-30 | High frequency winding component and switching power supply using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2961427B2 (en) |
-
1989
- 1989-12-30 JP JP34424789A patent/JP2961427B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04706A (en) | 1992-01-06 |
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