TWI835128B - Inductor that improves common-mode to differential-mode rejection ratio - Google Patents
Inductor that improves common-mode to differential-mode rejection ratio Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000001629 suppression Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 23
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical group [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 1
- DAOLWZXZVHIXRA-UHFFFAOYSA-N [Fe].[Mo].[Ni].[Fe] Chemical group [Fe].[Mo].[Ni].[Fe] DAOLWZXZVHIXRA-UHFFFAOYSA-N 0.000 description 1
- RFIJBZKUGCJPOE-UHFFFAOYSA-N [Fe].[Ni].[Zn] Chemical group [Fe].[Ni].[Zn] RFIJBZKUGCJPOE-UHFFFAOYSA-N 0.000 description 1
- LNRYQGINUXUWLV-UHFFFAOYSA-N [Mn].[Fe].[Zn] Chemical group [Mn].[Fe].[Zn] LNRYQGINUXUWLV-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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Abstract
一種可改善共模轉差模抑制比的電感，其包含：一鐵芯，包含一第一凸緣、一第二凸緣及一中柱，該中柱具有一第一側面及一第二側面；以及複數線圈，包含一第一線圈及一第二線圈，該複數線圈以該第一凸緣朝向該第二凸緣的方向，在該中柱設有複數層，第一層在該中柱的第一側面依序呈現出該至少一個第一線圈、該第一線圈、該第二線圈、該第一線圈、該第二線圈、間距、該第二線圈、該第一線圈及複數個第一線圈，第一層在該中柱的第二側面依序呈現出複數個第一線圈、該第一線圈、該第二線圈、間距、該第二線圈、該第一線圈及複數個第一線圈，第二層呈現出複數個第二線圈。藉由特定的繞線形式改善共模轉差模抑制比，有效降低模式轉換特性(Ssd/Sds)，提高產品良率。 An inductor that can improve common mode to differential mode rejection ratio, which includes: an iron core including a first flange, a second flange and a center column, the center column has a first side and a second side ; And a plurality of coils, including a first coil and a second coil, the plurality of coils are provided with a plurality of layers on the center pillar in the direction of the first flange facing the second flange, and the first layer is on the center pillar. The first side sequentially presents the at least one first coil, the first coil, the second coil, the first coil, the second coil, the spacing, the second coil, the first coil and a plurality of third coils. A coil, the first layer sequentially presents a plurality of first coils, the first coil, the second coil, the spacing, the second coil, the first coil and a plurality of first coils on the second side of the center column. Coil, the second layer presents a plurality of second coils. The specific winding form improves the common-mode to differential-mode rejection ratio, effectively reduces the mode conversion characteristics (Ssd/Sds), and improves product yield.
Description
本發明係關於一種電感，且特別是有關於可改善共模轉差模抑制比的電感。 The present invention relates to an inductor, and in particular to an inductor that can improve the common mode to differential mode rejection ratio.
一般的共模濾波器，其主要是於一鐵芯上繞設有一第一線圈與一第二線圈，該第一線圈與第二線圈的末端，則分別連接於鐵芯的端電極上，其濾波的動作原理是利用當雜訊電流如共模電流經過該共模濾波器時，該共模電流會在第一線圈與第二線圈上產生同向的磁場，因而會增加該第一線圈與第二線圈的感抗(inductive reactance)，而使該共模濾波器表現為高阻抗，也即可產生較高的共模阻抗(common mode impedance)，俾可衰減該共模電流，進而可達到濾除共模雜訊的目的。 A general common mode filter mainly consists of a first coil and a second coil wound around an iron core. The ends of the first coil and the second coil are respectively connected to the terminal electrodes of the iron core. The operating principle of filtering is to utilize that when noise current such as common mode current passes through the common mode filter, the common mode current will generate magnetic fields in the same direction on the first coil and the second coil, thus increasing the magnetic field between the first coil and the second coil. The inductive reactance of the second coil causes the common mode filter to exhibit high impedance, which can produce a higher common mode impedance (common mode impedance), which can attenuate the common mode current, thereby achieving The purpose of filtering out common mode noise.
如中華民國專利號I713975的一種「降低差模訊號轉共模訊號的共模濾波器」，其包含一芯柱體，該芯柱體上依序設有一第一繞線區域、一第二繞線區域和一第三繞線區域，該芯柱體上兩端分別延伸設有一第一法蘭和一第二法蘭；一第一線圈，係於該第一繞線區域、第二繞線區域和第三繞線區域分別依序繞設固定m1匝之第一繞線部、m2匝之第二繞線部和m3匝之第三繞線部；一第二線圈，係於該第一繞線區域、第二繞線區域和第三繞線區域之相鄰該第一線圈分別依序繞設固定n1匝之第四繞線 部、n2匝之第五繞線部和n3匝之第六繞線部，該m1+m2+m3匝等於該n1+n2+n3匝；其中，該第二繞線區域之第五繞線部其中兩線匝之間設有一隔離區。 For example, the Republic of China patent number I713975 is a "common mode filter that reduces differential mode signals and converts them into common mode signals." It includes a core cylinder with a first winding area and a second winding area sequentially provided on the core cylinder. wire area and a third winding area, a first flange and a second flange are respectively extended on both ends of the core cylinder; a first coil is tied to the first winding area and the second winding area. The first winding part of fixed m1 turns, the second winding part of m2 turns and the third winding part of m3 turns are wound in sequence respectively in the area and the third winding area; a second coil is tied to the first The adjacent first coils in the winding area, the second winding area and the third winding area are respectively wound with fixed n1 turns of the fourth winding in sequence. part, the fifth winding part of n2 turns and the sixth winding part of n3 turns, the m1+m2+m3 turns are equal to the n1+n2+n3 turns; among them, the fifth winding part of the second winding area There is an isolation zone between the two turns.
然而，現有的共模濾波器存在有共模訊號轉差模訊號的模式轉換特性(mode conversion characteristic，又稱Ssd/Sds)較高的問題，使產品的良率較低。 However, existing common-mode filters have the problem of high mode conversion characteristics (also known as Ssd/Sds) from common-mode signals to differential-mode signals, resulting in low product yields.
有鑑於此，如何將上述缺失加以摒除，即為本案發明人所欲解決之技術困難點之所在。 In view of this, how to eliminate the above defects is the technical difficulty that the inventor of this case wants to solve.
有鑑於習用所述，因此本發明在於解決及改善習用所存在之問題與缺失為目的。 In view of the conventional usage, the present invention aims to solve and improve the existing problems and deficiencies in the conventional usage.
為達成以上之目的，本發明係提供一種可改善共模轉差模抑制比的電感，其包含：一鐵芯，包含一第一凸緣、一第二凸緣及一中柱，該中柱具有一第一側面及一第二側面；以及複數線圈，包含一第一線圈及一第二線圈，該複數線圈以該第一凸緣朝向該第二凸緣的方向，在該中柱設有複數層，第一層在該中柱的第一側面依序呈現出該至少一個第一線圈、該第一線圈、該第二線圈、該第一線圈、該第二線圈、間距、該第二線圈、該第一線圈及複數個第一線圈，第一層在該中柱的第二側面依序呈現出複數個第一線圈、該第一線圈、該第二線圈、間距、該第二線圈、該第一線圈及複數個第一線圈，第二層呈現出複數個第二線圈。 In order to achieve the above objectives, the present invention provides an inductor that can improve the common mode to differential mode rejection ratio, which includes: an iron core, including a first flange, a second flange and a center pillar, the center pillar It has a first side and a second side; and a plurality of coils, including a first coil and a second coil, the plurality of coils are arranged on the center column with the first flange facing the direction of the second flange. A plurality of layers, the first layer sequentially presents the at least one first coil, the first coil, the second coil, the first coil, the second coil, the spacing, the second coil on the first side of the center column. Coils, the first coils and a plurality of first coils, the first layer sequentially presents a plurality of first coils, the first coils, the second coils, spacing, and the second coils on the second side of the center column , the first coil and a plurality of first coils, and the second layer presents a plurality of second coils.
其中，該中柱的形狀為工字形。 Wherein, the shape of the center column is an I-shape.
其中，該鐵芯的第一凸緣、第二凸緣及中柱為一體成形。 Wherein, the first flange, the second flange and the center column of the iron core are integrally formed.
其中，該間距為0或大於0。 Wherein, the distance is 0 or greater than 0.
本案藉由特定的繞線形式改善共模轉差模抑制比，有效降低模式轉換特性(Ssd/Sds)，提高產品良率。 This case uses a specific winding form to improve the common-mode to differential-mode rejection ratio, effectively reduce the mode conversion characteristics (Ssd/Sds), and improve product yield.
1:鐵芯 1:Iron core
11:第一凸緣 11:First flange
12:第二凸緣 12:Second flange
13:中柱 13: middle pillar
131:第一側面 131:First side
132:第二側面 132:Second side
2:線圈 2: Coil
21:第一線圈 21:First coil
22:第二線圈 22:Second coil
D:間距 D: spacing
〔圖1〕為本發明可改善共模轉差模抑制比的電感之示意圖。 [Figure 1] is a schematic diagram of an inductor that can improve the common mode to differential mode rejection ratio according to the present invention.
〔圖2〕為本發明可改善共模轉差模抑制比的電感第一實施例之示意圖。 [Fig. 2] is a schematic diagram of an inductor according to the first embodiment of the present invention that can improve the common mode to differential mode rejection ratio.
〔圖3〕為本發明可改善共模轉差模抑制比的電感第二實施例之示意圖。 [Figure 3] is a schematic diagram of the second embodiment of the inductor that can improve the common mode to differential mode rejection ratio of the present invention.
〔圖4〕為本發明可改善共模轉差模抑制比的電感第三實施例之示意圖。 [Fig. 4] is a schematic diagram of the third embodiment of the inductor according to the present invention that can improve the common mode to differential mode rejection ratio.
為使 貴審查員方便簡潔瞭解本發明之其他特徵內容與優點及其所達成之功效能夠更為顯現，茲將本發明配合附圖，詳細說明如下： In order to allow the examiner to conveniently and concisely understand other features and advantages of the present invention and the effects achieved by the present invention, the present invention is described in detail as follows with reference to the accompanying drawings:
請參閱圖1及圖2所示，本發明係提供一種可改善共模轉差模抑制比的電感，其包含：一鐵芯1以及複數線圈2。
Please refer to FIG. 1 and FIG. 2 . The present invention provides an inductor that can improve the common mode to differential mode rejection ratio. It includes: an
該鐵芯1包含一第一凸緣11、一第二凸緣12及一中柱13，該中柱13具有一第一側面131及一第二側面132。具體來說，該中柱13的形狀可為I字狀或工字狀。該鐵芯1的第一凸緣11、第二凸緣12及中柱13可為一體成形。該鐵芯1可為一錳鋅鐵芯(Mn-Zn Core)、一鎳鋅鐵芯(Ni-Zn Core)、一鐵粉芯(Iron Powder Core)、一鐵鎳鉬鐵芯(Molypermalloy Powder(MPP)Core)、一鐵
矽鋁鐵芯(Sendust Core)或一鐵氧體鐵芯(Ferrite Core)。
The
該複數線圈2包含一第一線圈21及一第二線圈22，該複數線圈2以該第一凸緣11朝向該第二凸緣12的方向，在該中柱13設有複數層，第一層在該中柱13的第一側面131依序呈現出該至少一個第一線圈21、該第一線圈21、該第二線圈22、該第一線圈21、該第二線圈22、間距D、該第二線圈22、該第一線圈21及複數個第一線圈21，第一層在該中柱13的第二側面132依序呈現出複數個第一線圈21、該第一線圈21、該第二線圈22、間距D、該第二線圈22、該第一線圈21及複數個第一線圈21，第二層呈現出複數個第二線圈22。
The plurality of
請參閱圖2所示，具體來說，該第一線圈21及該第二線圈22的繞線可為：第一層在該中柱13的第一側面131依序呈現出三個第一線圈21、該第一線圈21、該第二線圈22、該第一線圈21、該第二線圈22、間距D、該第二線圈22、該第一線圈21及四個第一線圈21，第一層在該中柱13的第二側面132依序呈現出四個第一線圈21、該第一線圈21、該第二線圈22、間距D、該第二線圈22、該第一線圈21及五個第一線圈21，第二層呈現出複數個第二線圈22。
Please refer to FIG. 2 . Specifically, the winding of the
請參閱圖3所示，具體來說，該第一線圈21及該第二線圈22的繞線亦可為：第一層在該中柱13的第一側面131依序呈現出二個第一線圈21、該第一線圈21、該第二線圈22、該第一線圈21、該第二線圈22、間距D、該第二線圈22、該第一線圈21及三個第一線圈21，第一層在該中柱13的第二側面132依序呈現出三個第一線圈21、該第一線圈21、該第二線圈22、間距D、該第二線圈22、該第一線圈21及四個第一線圈21，第二層呈現出複數個
第二線圈22。
Please refer to FIG. 3 . Specifically, the winding of the
請參閱圖4所示，具體來說，該第一線圈21及該第二線圈22的繞線還可為：第一層在該中柱13的第一側面131依序呈現出一個第一線圈21、該第一線圈21、該第二線圈22、該第一線圈21、該第二線圈22、間距D、該第二線圈22、該第一線圈21及二個第一線圈21，第一層在該中柱13的第二側面132依序呈現出二個第一線圈21、該第一線圈21、該第二線圈22、間距D、該第二線圈22、該第一線圈21及三個第一線圈21，第二層呈現出複數個第二線圈22。
Please refer to FIG. 4 . Specifically, the winding of the
本案藉由特定的繞線形式改善共模轉差模抑制比，有效降低模式轉換特性(Ssd/Sds)，提高產品良率。 This case uses a specific winding form to improve the common-mode to differential-mode rejection ratio, effectively reduce the mode conversion characteristics (Ssd/Sds), and improve product yield.
以上所論述者，僅為本發明較佳實施例而已，並非用以限定本發明實施之範圍；故在不脫離本發明之精神與範疇內所作之等效的修飾、組合、置換或轉用等，皆應涵蓋於本發明之申請專利範圍內。 The above discussions are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention; therefore, equivalent modifications, combinations, substitutions, or uses can be made without departing from the spirit and scope of the present invention. , should all be covered by the patent application scope of this invention.
1:鐵芯 1:Iron core
11:第一凸緣 11:First flange
12:第二凸緣 12:Second flange
13:中柱 13: middle pillar
2:線圈 2: Coil
21:第一線圈 21:First coil
22:第二線圈 22:Second coil
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| TW111116980A TWI835128B (en) | 2022-05-05 | 2022-05-05 | Inductor that improves common-mode to differential-mode rejection ratio |
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| TWI835128B true TWI835128B (en) | 2024-03-11 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180358168A1 (en) * | 2015-12-01 | 2018-12-13 | Ihi Corporation | Coil device |
| US20190148062A1 (en) * | 2015-10-06 | 2019-05-16 | Cyntec Co., Ltd. | Apparatus of coupled inductors with balanced electromotive forces |
| TW202029234A (en) * | 2019-01-15 | 2020-08-01 | 西北臺慶科技股份有限公司 | Common mode filter for reducing conversion of differential mode signal to common mode signal including a core cylinder, a first coil and a second coil |
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2022
- 2022-05-05 TW TW111116980A patent/TWI835128B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190148062A1 (en) * | 2015-10-06 | 2019-05-16 | Cyntec Co., Ltd. | Apparatus of coupled inductors with balanced electromotive forces |
| US20180358168A1 (en) * | 2015-12-01 | 2018-12-13 | Ihi Corporation | Coil device |
| TW202029234A (en) * | 2019-01-15 | 2020-08-01 | 西北臺慶科技股份有限公司 | Common mode filter for reducing conversion of differential mode signal to common mode signal including a core cylinder, a first coil and a second coil |
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