WO2023277570A1 - 안정적인 내전압 특성을 갖는 슬림형 자기 결합 장치 - Google Patents
안정적인 내전압 특성을 갖는 슬림형 자기 결합 장치 Download PDFInfo
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- WO2023277570A1 WO2023277570A1 PCT/KR2022/009310 KR2022009310W WO2023277570A1 WO 2023277570 A1 WO2023277570 A1 WO 2023277570A1 KR 2022009310 W KR2022009310 W KR 2022009310W WO 2023277570 A1 WO2023277570 A1 WO 2023277570A1
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- WIPO (PCT)
- Prior art keywords
- bobbin
- terminal
- coil
- groove
- coupling device
- Prior art date
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- 230000008878 coupling Effects 0.000 title claims abstract description 13
- 238000010168 coupling process Methods 0.000 title claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 25
- 238000002955 isolation Methods 0.000 claims description 20
- 239000000126 substance Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 235000012489 doughnuts Nutrition 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F17/062—Toroidal core with turns of coil around it
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/027—Casings specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F2017/065—Core mounted around conductor to absorb noise, e.g. EMI filter
Definitions
- the present invention relates to a slim magnetic coupling device, in particular, a magnetic component such as an inductor or transformer by way of example.
- FIG. 1 shows a second bobbin 1a formed in a cylindrical donut shape and accommodating a core therein, and a first coil 2a wound on both sides with a central portion of the second bobbin 1a interposed therebetween. and a structure formed separately from the second coil 2b and the second bobbin 1a, wherein the groove is formed so that the first and second coils 2a and 2b can be accommodated in a wound state on the second bobbin 1a.
- a conventional EMI filter including a first bobbin 1b including a bobbin extension formed in the center and extending to both sides of the groove and provided with a plurality of terminals.
- Such a conventional EMI filter has the following problems because the terminal portion is concentrated in the direction of each end.
- the present invention aims to solve at least one of the aforementioned conventional problems.
- a magnetic coupling device or magnetic component suitable for a miniaturized structure, stable by securing a sufficient distance between terminals, and having improved withstand voltage characteristics is provided.
- the magnetic coupling device includes an upper surface, a lower surface facing the upper surface, and an outer surface disposed between the upper surface and the lower surface, disposed inside the outer surface and on the upper surface.
- a first bobbin including a groove portion concave toward the lower surface, and a first terminal portion and a second terminal portion spaced apart from each other along a first direction on the outer surface;
- a second bobbin disposed on the groove and accommodating a magnetic core; a first coil wound around the second bobbin and spaced apart from each other along the first direction, wherein the first coil comprises a first winding portion wound around the second bobbin, the first winding portion includes a first extension portion extending onto an outer surface of the first bobbin and coupled to the first terminal portion, and the second coil includes a second winding portion wound around the second bobbin;
- a second extension portion extending onto an outer surface of the first bobbin and coupled to the second terminal portion is included.
- the second bobbin includes a pair of isolating protrusions, and the first and second windings are isolated from each other by the pair of isolating protrusions.
- a departure angle formed by each of the first extension part and the second extension part from the groove part is 25° or more.
- the departure angle may be 50° or less.
- each of the terminal units is installed at a distance of 5 mm or more from the isolation protrusion.
- each of the terminal units may be disposed in alignment with a virtual parallel line parallel to a virtual straight line connecting the pair of isolation protrusions at the outermost periphery of the first coil or the second coil with respect to the isolation protrusion.
- the first bobbin includes a pair of bobbin extensions extending from the groove to both sides, and in each bobbin extension, the central portion is the distance from the groove to the outermost part. is smaller than the length in the same direction in the first terminal portion or the second terminal portion.
- a second isolation protrusion may be formed in the central portion of the bobbin extension part.
- At least a portion of the first bobbin is convex outward along the shape of the groove.
- each terminal part is installed on the first bobbin while surrounding the upper and lower surfaces and the outer surface of the first bobbin.
- each extension part may be inserted between the outer surface and the terminal part.
- an angle ⁇ 1 between the last winding of the first coil and the opposite last winding of the second coil is between 20 and 100°.
- an angle ⁇ 2 between the first terminal part and the second terminal part based on the center of the second bobbin is 20 to 100°.
- angle ratio ⁇ 2/ ⁇ 1 may be 0.2 to 5.
- the first bobbin further includes a third terminal part and a fourth terminal part, and the first to fourth terminal parts are respectively disposed in each quadrant area outside the groove part.
- the first extension part and the second extension part extend out of the groove and open each other at an increasing angle to connect to the first terminal part and the second terminal part.
- the first bobbin further includes a guide groove on an outer surface.
- the guide groove portion may further include a first guide groove portion and a second guide groove portion, and the first extension portion and the second extension portion may be disposed in the first guide groove portion and the second guide groove portion, respectively.
- the guide groove part may be connected to the groove part where the second bobbin is disposed.
- the first bobbin includes a radial extension portion extending in a radial direction from the groove portion and provided with each terminal portion.
- a magnetic component suitable for miniaturization can be obtained.
- FIG. 1 shows an EMI filter as a conventional magnetic component.
- FIG. 2 shows an EMI filter as an embodiment of the present invention.
- FIG. 3 shows a cross-sectional view A-A of FIG. 2 .
- FIG. 4 shows a part of an EMI filter as a second embodiment of the present invention.
- FIG. 5 shows a part of an EMI filter as a third embodiment of the present invention.
- FIG. 6 shows a part of an EMI filter as a fourth embodiment of the present invention.
- module and unit used in this specification are only used for nomenclatural distinction between components, and are interpreted as premising that they are physically and chemically separated or separated, or that they can be separated or separated in such a way. should not be
- a and/or B means including all three cases such as “A”, “B”, and “A and B”.
- each layer (film), region, pattern or structure is “on” or “under” the substrate, each layer (film), region, pad or pattern.
- the substrate formed on includes all those formed directly or through another layer.
- the criteria for "upper/upper” or “lower/lower” are, in principle, based on the appearance shown in the drawings for convenience, unless otherwise stated in the properties or specification of each component or between them. It is used only to indicate the relative positional relationship between elements for convenience, and should not be construed as limiting the position of actual components. For example, “above B” only indicates that B is shown above A on the drawing, unless otherwise stated or when A or B must be located above B due to the nature of A or B, and B in actual products, etc. may be located under A, or B and A may be placed sideways.
- each layer (film), region, pattern, or structure in the drawing may be modified for clarity and convenience of description, it does not entirely reflect the actual size.
- FIG. 2 shows an EMI filter implemented as one embodiment of the present invention
- FIG. 3 shows a cross-sectional view A-A in FIG.
- the EMI filter of this embodiment includes a second bobbin 10, a first bobbin 20, a first coil 40, and a second coil 50.
- the second bobbin 10 is formed separately from the first bobbin 20, and a magnetic core (not shown) is accommodated therein.
- the magnetic core may have a structure formed by winding an amorphous ribbon like a roll.
- the second bobbin 10 has a substantially circular donut shape, and a pair of isolation protrusions 11a and 11b are formed substantially in the center.
- the second bobbin 10 is divided into a first area (upper area in the drawing) and a second area (lower area in the drawing) through the pair of isolation protrusions 11a and 11b, and both areas are the isolation protrusions ( 11a, 11b) are isolated from the winding point of view of the first coil 40 and the second coil 50.
- the second bobbin 10 may include a lower part having a U-shaped cross section and an upper part having an inverted U-shaped cross section, and may have a structure in which the upper and lower parts are overlapped and coupled after the magnetic core is accommodated therein.
- the first coil 40 is wound in the first region, which is one side region, and the second coil 50 is wound in the second region.
- the first bobbin 20 has a groove part 21 formed in the center, and the first coil 40 and the second coil 50 are wound around the second bobbin 10, and the groove part 21 It is seated and positioned.
- the groove portion 21 has a structure in which a through hole is formed in the center, a seating portion extends outward in a radial direction from a circumferential edge of the hole, and a circumferential wall is formed at a predetermined height from the outer circumference of the seating portion.
- first bobbin 20 extends in the direction of a virtual straight line VL connecting the pair of isolation protrusions 11a and 11b of the second bobbin 10 from both sides of the groove portion 21. portion 22a and a second bobbin extension 22b.
- Terminal parts (or terminals) (30a, 30b, 30c, 30d) are installed at four places in the bobbin extension parts 22a and 22b on both sides, and as shown in FIG. 2, each quadrant for the groove part 21
- the terminal parts 30a, 30b, 30c, and 30d are installed outside the groove part 21 in the region. That is, the first terminal unit 30a is installed in the first quadrant area, the third terminal unit 30b is installed in the second quadrant area, the fourth terminal unit 30c is installed in the third quadrant area, and the second terminal unit 30c is installed in the fourth quadrant area.
- a terminal portion 30d is installed.
- the first terminal portion 30a, the second terminal portion 30d, the third terminal portion 30b, and the fourth terminal portion 30c are spaced apart from each other in a first direction (vertical direction in FIG. 2).
- the central portion corresponding to the isolation protrusions 11a and 11b may have a narrow distance L1 from the groove portion 21 to the outermost part, and each Since the terminal portions 30a, 30b, 30c, and 30d are sufficiently spaced apart from each other, there is no spatial restriction on their installation, and the area of the upper or lower surfaces (mounted surfaces) of the terminal portions 30a, 30b, 30c, or 30d is increased. is possible
- the distance L1 may be smaller than the length L2 of the terminal portion in the direction of the imaginary straight line VL, and the terminal portions 30a, 30b, 30c, and 30d may include the bobbin extension portion 22a, In 22b), it can be installed at a position where the length in the direction of the virtual straight line (VL) is sufficient, so that the entire length (w1') in the direction of the virtual straight line (VL) can be kept compact in the EMI filter.
- second isolation protrusions 24a and 24b are formed at the central portions of the bobbin extension parts 22a and 22b, through which the extension parts 41a and 41b of the first coil 40 and the second coil 50 are formed.
- the extensions 51a and 51b can be isolated more reliably.
- a pair of extensions 41a and 41b of the first coil 40 and extensions 51a and 51b of the second coil 50 are oppositely disposed with the imaginary straight line VL interposed therebetween. (41a and 51a, 41b and 51b) come out of the groove part 21 and spread apart from each other at gradually increasing angles, and are connected to respective terminal parts 30a, 30b, 30c and 30d.
- the minimum distance ds between the pair of extensions 41a and 51a, 41b and 51b is each last winding on the second bobbin 10 (this last winding is an extension toward the terminal). It can be determined by the position, and the parts coming out of the groove part 21 from the last winding and connected to each terminal part 30a, 30b, 30c, 30d are spaced apart from each other more. Through this structure, the withstand voltage characteristic of the EMI filter of the present embodiment can be stably secured.
- an angle ⁇ 1 between the left last winding of the first coil 40 and the left last winding of the second coil 50 is at least 20° or more and 100° or less. If the angle ⁇ 1 is less than 20 °, the distance between the wires of the coil is too close, resulting in a breakdown voltage defect.
- angle ( ⁇ 2) is less than 20°, when connecting the coil extension part, the distance between the wires becomes close, resulting in a breakdown voltage failure. do.
- the ratio ( ⁇ 2/ ⁇ 1) between the angles ⁇ 1 and ⁇ 2 is preferably 0.2 to 5. If the angle ratio is less than 0.2, the overall height of the part may increase due to insufficient space for winding the wire, and if it is greater than 5, the distance between the terminals becomes longer and the wire length becomes longer when connected, resulting in higher resistance, which can affect heat generation.
- FIG. 3 is a representative example in which the terminal portions 30a, 30b, 30c, and 30d are installed on the first bobbin 20 and the extension portions 41a, 41b, 51a, and 51b are connected to the third terminal portion 30b. indicates
- the third terminal portion 30b passes through the first bobbin 20 and is installed while covering the upper surface US, lower surface LS, and outer surface SS of the first bobbin 20 .
- the one-side extension portion 41b of the first coil 40 is connected to the third terminal portion 30b on the outer surface SS. That is, the extension part 41b comes out of the groove part 21 in the last winding of the first coil 40 and extends while being bent at an angle gradually increasing upward on the upper surface of the bobbin extension part 22b of the first bobbin 20. Then, it comes down to the outer surface SS of the bobbin extension part 22b and is inserted and connected between the outer surface SS and the third terminal part 30b.
- the overall thickness of the EMI filter may be further reduced.
- the outer surfaces of both sides with the imaginary straight line VL interposed therebetween have convex portions 23a and 23b at least partially convex outward along the shape of the groove portion 21, respectively.
- the total length (w2') in the direction perpendicular to the virtual straight line (VL) is not larger than the conventional structure, but the total length (w1') in the direction of the virtual straight line (VL) is longer than the conventional structure. can be miniaturized.
- the distance d" between the first terminal portion 30a and the isolation protrusion 11a of the second bobbin 10 is 5 mm.
- the first terminal portion 30a and The separation distance d" between the isolation protrusions 11a is preferably 5 mm or more, because if it is smaller than 5 mm, the withstand voltage characteristic does not satisfy the 2.2 kV requirement.
- the starting angle ⁇ s of the extensions 41a and 51a coming out of the groove 21 is preferably 25°
- the ending angle ⁇ t connected to the terminal portions 30a and 30d is preferably 70° or more.
- the terminal portions 30a and 30d are further spaced apart from the isolation protrusion 11a, and preferably, as shown, the edges of the terminal portions 30a and 30d on the virtual straight line VL side. is arranged aligned with the outermost part of the first coil 40 . And, in the embodiment of FIG. 5 , the departure angle ⁇ s of the extensions 41a and 51a is 50°.
- the separation distance between the first and second terminal portions 30a and 30d and the isolation protrusion 11a may be 5 mm or more, respectively, and the extension portion
- the starting angles ⁇ s of 41a and 51a may be 25° or more and 50° or less, and the end angles ⁇ t of extensions 41a and 51a may be 70° or more.
- the table below is a comparison table of withstand voltage characteristics of a conventional EMI filter as shown in FIG. 1 and an EMI filter according to an embodiment of the present invention as shown in FIG. 2 .
- the EMI filter of the embodiment greatly increased in the distance between terminals and the terminal area, and the withstand voltage was 1.5 kV or less in the case of the conventional EMI filter, which did not satisfy the requirements, but in the case of the embodiment, 2.2 kV It was found that it satisfies the requirements by taking out withstand voltage characteristics.
- Figure 6 shows another embodiment of the present invention.
- FIG. 6 differs from the above-described embodiments only in the shape structure of the first bobbin 20 .
- the first bobbin 20 of this embodiment extends radially from the groove portion 21 at four locations, respectively, and has radial extension portions 25a, 25b, 25c, and 25d in which the terminal portions 30a, 30b, 30c, and 30d are installed. ).
- the terminal portions 30a, 30b, 30c, and 30d are installed aligned in the radial direction in the radial extension portions 25a, 25b, 25c, and 25d.
- the terminal portions 30a, 30b, 30c, and 30d are aligned in the radial direction, the total length in the virtual straight line VL direction can be further reduced while maintaining the terminal area or length as compared to other embodiments, and miniaturization can be achieved.
- the magnetic coupling device according to the embodiment may be used in a TV or the like.
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- Microelectronics & Electronic Packaging (AREA)
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- Insulating Of Coils (AREA)
Abstract
Description
구분 | 종래 EMI 필터(도1 구조) | 실시예 (도2 구조) |
부품 사이즈 (w1 x w2)(w1'x w2') [mm] | 75 x 45 | 62 x 51 |
단자간 거리 (d)(d') [mm] | 11 | 32 |
단자 면적 [mm2] | 12 | 25 |
내전압 [kV] | ≤1.5 | 2.2 |
Claims (10)
- 상면, 상기 상면과 마주보는 하면, 및 상기 상면과 상기 하면 사이에 배치된 외측면을 포함하고, 상기 외측면의 내측에 배치되고 상기 상면에서 상기 하면을 향하여 오목한 홈부, 및 상기 외측면에 제1 방향을 따라 이격되어 배치된 제1 단자부, 제2 단자부를 포함하는 제1 보빈;상기 홈부 상에 배치되고, 자성체 코어를 수용하는 제2 보빈; 및상기 제2 보빈에 권선되고, 상기 제1 방향을 따라 서로 이격된 제1 코일, 제2 코일을 포함하고,상기 제1 코일은 상기 제2 보빈에 권선된 제1 권선부, 상기 제1 권선부에서 상기 제1 보빈의 외측면 상으로 연장되어 상기 제1 단자부와 결합된 제1 연장부를 포함하고,상기 제2 코일은 상기 제2 보빈에 권선된 제2 권선부, 상기 제2 권선부에서 상기 제1 보빈의 외측면 상으로 연장되어 상기 제2 단자부와 결합된 제2 연장부를 포함하는 자기 결합 장치.
- 제1 항에 있어서,상기 제2 보빈은 한 쌍의 격리 돌기를 포함하고,상기 제1 권선부와 제2 권선부는 상기 한 쌍의 격리 돌기에 의해 격리된 자기 결합 장치.
- 제2 항에 있어서,상기 각 단자부는, 상기 격리 돌기에 대한 상기 제1 코일 또는 제2 코일의 최외곽에서 상기 한 쌍의 격리 돌기를 연결한 가상의 직선에 평행한 가상의 평행선과 정렬되어 배치된 자기 결합 장치.
- 제1 항에 있어서,상기 제1 보빈은,상기 홈부로부터 양측으로 연장된 한 쌍의 보빈 연장부를 포함하고,상기 각 보빈 연장부에 있어서 중앙부는, 상기 홈부에서부터 최외곽까지의 거리가 상기 제1 단자부 또는 제2 단자부에 있어 동일 방향 길이보다 작은 자기 결합 장치.
- 제4 항에 있어서,상기 보빈 연장부의 상기 중앙부에는 제2 격리 돌기가 형성된 자기 결합 장치.
- 제1 항에 있어서,상기 각 단자부는 상기 제1 보빈의 상기 상면과 상기 하면과 상기 외측면을 둘러싸며 상기 제1 보빈에 설치된 자기 결합 장치.
- 제6 항에 있어서,상기 각 연장부는 상기 외측면과 상기 단자부 사이로 삽입된 자기 결합 장치.
- 제1 항에 있어서,상기 제1 보빈은 제3 단자부 및 제4 단자부를 추가로 포함하고,상기 제1 내지 제4 단자부는 각각 상기 홈부 외곽의 각 사분면 영역에 배치된 자기 결합 장치.
- 제1 항에 있어서,제1 연장부와 제2 연장부는 각각 상기 홈부 바깥으로 나와 점점 증가하는 각도로 서로 벌어지며 연장되어 상기 제1 단자부 및 제2 단자부에 접속된 자기 결합 장치.
- 제1 항에 있어서,상기 제1 보빈은 외면에 가이드 홈부를 추가로 포함하는 자기 결합 장치.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/572,970 US20240321510A1 (en) | 2021-07-01 | 2022-06-29 | Slim magnetic coupling device with stable withstanding voltage characteristics |
JP2023578993A JP2024523475A (ja) | 2021-07-01 | 2022-06-29 | 安定的な耐電圧特性を有するスリム型磁気結合装置 |
CN202280046160.2A CN117616520A (zh) | 2021-07-01 | 2022-06-29 | 具有稳定耐压特性的纤薄磁耦合装置 |
EP22833625.1A EP4365920A1 (en) | 2021-07-01 | 2022-06-29 | Slim magnetic coupling device with stable withstanding voltage characteristics |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2021-0086204 | 2021-07-01 | ||
KR1020210086204A KR20230005462A (ko) | 2021-07-01 | 2021-07-01 | 안정적인 내전압 특성을 갖는 슬림형 자기 결합 장치 |
Publications (1)
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WO2023277570A1 true WO2023277570A1 (ko) | 2023-01-05 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2022/009310 WO2023277570A1 (ko) | 2021-07-01 | 2022-06-29 | 안정적인 내전압 특성을 갖는 슬림형 자기 결합 장치 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240321510A1 (ko) |
EP (1) | EP4365920A1 (ko) |
JP (1) | JP2024523475A (ko) |
KR (1) | KR20230005462A (ko) |
CN (1) | CN117616520A (ko) |
WO (1) | WO2023277570A1 (ko) |
Citations (5)
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KR100731782B1 (ko) * | 2004-09-30 | 2007-06-22 | 다이요 유덴 가부시키가이샤 | 면실장 코일 부품 및 상기 면실장 코일 부품을 실장한 기판 |
KR101008198B1 (ko) * | 2009-08-31 | 2011-01-17 | 주식회사 티엔씨 | 이엠아이용 코일제품 |
KR20120007212A (ko) * | 2010-07-14 | 2012-01-20 | 주식회사 아모그린텍 | 인덕터 단자대 및 이를 이용한 인덕터 장치 |
JP2012164833A (ja) * | 2011-02-08 | 2012-08-30 | Nec Tokin Corp | 表面実装型コイル |
JP2018107275A (ja) * | 2016-12-26 | 2018-07-05 | Fdk株式会社 | トランスおよびボビン |
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2021
- 2021-07-01 KR KR1020210086204A patent/KR20230005462A/ko active Search and Examination
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2022
- 2022-06-29 JP JP2023578993A patent/JP2024523475A/ja active Pending
- 2022-06-29 WO PCT/KR2022/009310 patent/WO2023277570A1/ko active Application Filing
- 2022-06-29 EP EP22833625.1A patent/EP4365920A1/en active Pending
- 2022-06-29 CN CN202280046160.2A patent/CN117616520A/zh active Pending
- 2022-06-29 US US18/572,970 patent/US20240321510A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100731782B1 (ko) * | 2004-09-30 | 2007-06-22 | 다이요 유덴 가부시키가이샤 | 면실장 코일 부품 및 상기 면실장 코일 부품을 실장한 기판 |
KR101008198B1 (ko) * | 2009-08-31 | 2011-01-17 | 주식회사 티엔씨 | 이엠아이용 코일제품 |
KR20120007212A (ko) * | 2010-07-14 | 2012-01-20 | 주식회사 아모그린텍 | 인덕터 단자대 및 이를 이용한 인덕터 장치 |
JP2012164833A (ja) * | 2011-02-08 | 2012-08-30 | Nec Tokin Corp | 表面実装型コイル |
JP2018107275A (ja) * | 2016-12-26 | 2018-07-05 | Fdk株式会社 | トランスおよびボビン |
Also Published As
Publication number | Publication date |
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CN117616520A (zh) | 2024-02-27 |
EP4365920A1 (en) | 2024-05-08 |
JP2024523475A (ja) | 2024-06-28 |
KR20230005462A (ko) | 2023-01-10 |
US20240321510A1 (en) | 2024-09-26 |
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