WO2023233966A1 - コイル部品、およびこれを含むフィルタ回路 - Google Patents

コイル部品、およびこれを含むフィルタ回路 Download PDF

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Publication number
WO2023233966A1
WO2023233966A1 PCT/JP2023/017872 JP2023017872W WO2023233966A1 WO 2023233966 A1 WO2023233966 A1 WO 2023233966A1 JP 2023017872 W JP2023017872 W JP 2023017872W WO 2023233966 A1 WO2023233966 A1 WO 2023233966A1
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Prior art keywords
conductor
coil
conductors
laminated
laminate
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Ceased
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PCT/JP2023/017872
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English (en)
French (fr)
Japanese (ja)
Inventor
隆梓 宮本
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Murata Manufacturing Co Ltd
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Murata Manufacturing Co Ltd
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Priority to CN202390000304.0U priority Critical patent/CN222980246U/zh
Priority to JP2024524293A priority patent/JP7694825B2/ja
Publication of WO2023233966A1 publication Critical patent/WO2023233966A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/09—Filters comprising mutual inductance

Definitions

  • the present disclosure relates to a coil component and a filter circuit including the same.
  • noise countermeasures are taken using filter circuits that include coil components.
  • a filter circuit uses a capacitor, which is a capacitance element, so that the noise suppression effect is reduced by the equivalent series inductance (ESL), which is the parasitic inductance of the capacitor.
  • ESL equivalent series inductance
  • Patent Document 1 JP 2020-31118 A discloses a first coil consisting of a first spiral conductor and a second spiral conductor, and a second coil consisting of a third spiral conductor and a fourth spiral conductor. A common mode noise filter is disclosed.
  • a second coil is sandwiched between a first spiral conductor and a second spiral conductor that constitute the first coil, and a third spiral conductor that constitutes the second coil. and the fourth spiral conductor is smaller than the interval between the first spiral conductor and the third spiral conductor and the interval between the second spiral conductor and the fourth spiral conductor.
  • An object of the present disclosure is to provide a coil component that can improve the magnetic coupling force between a first coil and a second coil while reducing parasitic capacitance, and a filter circuit including the same. .
  • a coil component includes an insulator having a pair of principal surfaces facing each other, two or more first conductors forming a first coil, and three or more first conductors forming a second coil. 2 conductors, the first conductor and the second conductor are laminated in parallel to the pair of main surfaces of the insulator, and the first coil and the second coil are wound with a winding axis normal to the pair of main surfaces. are arranged so that the openings of the first coil and the second coil face at least a portion of each other, the insulator includes a first laminated portion and a second laminated portion, and the first laminated portion faces the first laminated portion.
  • the second laminated portion includes a portion where two or more second conductors are laminated adjacent to each other in the lamination direction with respect to one conductor, and the second laminated portion is a portion where the first conductor and the second conductor are laminated adjacent to each other in the lamination direction.
  • the first conductor and second conductor included in the first laminated part the conductor disposed in the layer on the second laminated part side, and the first conductor and the second conductor included in the second laminated part.
  • the distance between the conductors arranged in the layer on the side of the first laminated portion is greater than the distance between adjacent conductors in the first laminated portion and the distance between adjacent conductors in the second laminated portion.
  • a filter circuit includes the above-described coil component and a capacitor connected to the coil component.
  • a coil component capable of reducing parasitic capacitance while improving magnetic coupling force between a first coil and a second coil, and a filter circuit including the same. be able to.
  • FIG. 2 is a transparent perspective view of a coil component according to the present embodiment.
  • FIG. 2 is a transparent plan view of a coil component according to the present embodiment.
  • FIG. 2 is a perspective view for explaining the wiring pattern of the coil component according to the present embodiment.
  • FIG. 3 is a plan view of a coil included in the coil component according to the present embodiment.
  • FIG. 2 is a transparent side view of a coil component according to the present embodiment.
  • FIG. 2 is a conceptual diagram for explaining the order in which conductors are laminated in a laminate.
  • FIG. 2 is a circuit diagram of a filter circuit including a coil component according to the present embodiment. It is a conceptual diagram which shows the modification 1 regarding the lamination order of a conductor in a laminated body.
  • FIG. 7 is a conceptual diagram showing a fourth modification regarding the order of stacking conductors in a laminate.
  • FIG. 1 is a transparent perspective view of a coil component 100 according to the present embodiment.
  • FIG. 2 is a transparent plan view of the coil component 100 according to this embodiment.
  • FIG. 3 is a perspective view for explaining the wiring pattern of the coil component 100 according to this embodiment.
  • FIG. 4 is a plan view of coils L1 and L2 included in coil component 100 according to this embodiment.
  • the long side direction of the coil component 100 is the X direction
  • the short side direction is the Y direction
  • the height direction is the Z direction.
  • the coil component 100 includes a coil L1 and a coil L2.
  • the coil component 100 is composed of a laminate (insulator) 3 of ceramic layers.
  • a substrate ceramic green sheet
  • a wiring pattern of a coil L1 (first coil) and a coil L2 (second coil) is formed is laminated on the laminate 3.
  • the stacking direction of the ceramic layers is the Z direction, and the direction of the arrow indicates the upper layer direction.
  • the laminate 3 has a pair of main surfaces facing each other and a plurality of side surfaces connecting the pair of main surfaces.
  • first principal surface the top surface of the laminate 3
  • second principal surface the bottom surface
  • principal surface Sometimes referred to as the "principal surface.”
  • an electrode 4a (first electrode) is provided on one side (first side), and an electrode 4b (second electrode) is provided on the other side (second side). electrodes) are provided. Of the two side surfaces on the short side, an electrode 4c (third electrode) is provided on one side (third side), and an electrode 4d (fourth electrode) is provided on the other side (fourth side). It is being As shown in FIGS. 1 and 2, the electrodes 4a to 4d are provided so as to extend from the side surface of the stacked body 3 to the first main surface and the second main surface.
  • the coil L1 and the coil L2 are arranged so that the winding axes are oriented in the normal direction to the main surface of the laminate 3, and the openings of the coil L1 and the coil L2 are mutually arranged. They overlap and are magnetically coupled.
  • the coil L1 is composed of conductors 10a to 10c laminated in the Z-axis direction in the laminate 3.
  • the coil L2 is composed of conductors 20a to 20c laminated in the Z-axis direction in the laminate 3. In this way, the coil L1 and the coil L2 are composed of a plurality of conductors 10a to 10c and 20a to 20c laminated in parallel to the main surface of the laminate 3.
  • the conductors 10a, 10b, 10c forming the coil L1 may be referred to as the conductor 10
  • the conductors 20a, 20b, 20c forming the coil L2 may be referred to as the conductor 20.
  • the conductors 10 and 20 may be collectively referred to as a conductor (10, 20).
  • conductors 20a and 20b of the conductors 20a to 20c forming the coil L2 are stacked between the conductor 10a and the conductor 10b forming the coil L1.
  • the conductor 20c constituting the coil L2 is stacked adjacent to the conductor 10c.
  • the wiring pattern of the coils L1 and L2 will be explained with reference to FIG. 3.
  • the coils L1 and L2 are formed of conductors 10 and 20 formed on six layers of ceramic green sheets in the laminate 3.
  • FIG. 3 shows the wiring patterns of the conductors 10 and 20 included in each of the six layers.
  • Each wiring pattern is formed, for example, by printing conductive paste (Ni paste) on a ceramic green sheet, which is a substrate, by a screen printing method.
  • the laminate 3 is thus formed by laminating multiple layers of ceramic green sheets, which are substrates. Each layer constituting the laminate 3 is made of the same material. In this way, each layer of the laminate 3 is made of the same material, so after the lamination process of the laminate 3 is completed, during the batch firing process, the laminate 3 may peel or crack due to the difference in thermal expansion coefficient. This can prevent the possibility of this occurring.
  • the coil L1 is composed of a conductor 10a placed in the first layer, a conductor 10b placed in the fourth layer, and a conductor 10c placed in the fifth layer.
  • the coil L2 includes a conductor 20a placed in the second layer, a conductor 20b placed in the third layer, and a conductor 20c placed in the sixth layer.
  • the connecting portion 63a of the conductor 10b and the connecting portion 63b of the conductor 10c are connected by a via conductor 53.
  • the connecting portion 64a of the conductor 10b and the connecting portion 64b of the conductor 10c are connected by the via conductor 54.
  • the connecting portion 61a of the conductor 20a and the connecting portion 61b of the conductor 20b are connected by a via conductor 51.
  • the connecting portion 62a of the conductor 20a and the connecting portion 62b of the conductor 20b are connected by the via conductor 52.
  • Conductors 20a and 20b, which constitute a part of the coil L2 are sandwiched between the conductor 10a and the conductor 10b, which constitute a part of the coil L1. Further, conductors 10b and 10c, which constitute a part of the coil L1, are sandwiched between conductors 20b and 20c, which constitute a part of the coil L2. In this way, in the laminate 3, the conductor 20 forming part of the coil L2 is sandwiched between the plurality of conductors 10 forming part of the coil L1, and the conductor 20 forming part of the coil L2 is sandwiched between the plurality of conductors 10 forming part of the coil L1. A conductor 10, which constitutes a part of the coil L1, is sandwiched between the conductors 20 of the coil L1.
  • the wiring pattern of the conductor 10a and the conductor 10b is common.
  • the wiring pattern of the conductor 20b and the conductor 20c is common.
  • the wiring pattern of the conductor 20b and the conductor 20c is a pattern obtained by inverting the wiring pattern of the conductor 10a and the conductor 10b.
  • the wiring pattern of the conductor 20a is a pattern obtained by turning the conductor 10c upside down.
  • the conductors 10a to 10c and the conductors 20a to 20c are stacked in the laminate 3 so that the virtual lines V1 and V1 shown in FIG. 3 penetrate through the centers of the openings of the coils L1 and L2. Therefore, the coil L1 and the coil L2 are arranged so that the openings thereof face in the normal direction to the main surface of the laminate 3. Further, as shown in FIG. 2, when the laminate 3 is viewed from the normal direction to the main surface, the opening pattern of the coil L1 and the opening pattern of the coil L2 are common.
  • each of the coil L1 and the coil L2 has a single-loop coil shape.
  • each of the conductors 10a to 10c has a single loop coil shape of the coil L1
  • each of the conductors 20a to 20c has a coil shape of a single loop.
  • Each has a single loop coil shape of coil L2.
  • an end 91a of the conductor 10a and an end 91b of the conductor 10b are connected to the electrode 4a.
  • An end 93a of the conductor 10a and an end 93c of the conductor 10b are connected to the electrode 4c.
  • An end 92a of the conductor 20b and an end 92b of the conductor 20c are connected to the electrode 4b.
  • An end 93b of the conductor 20b and an end 93d of the conductor 20c are connected to the electrode 4c.
  • the coil L1 includes a conductor 10b formed by a first wiring pattern and a conductor 10c formed by a second wiring pattern.
  • Coil L2 includes a conductor 20b formed by a third wiring pattern and a conductor 20a formed by a fourth wiring pattern.
  • the conductor 10b formed by the first wiring pattern is connected to the electrode 4a at an end 91b, and connected to the electrode 4c at an end 93b.
  • the conductor 10c formed by the second wiring pattern is connected to the conductor 10b formed by the first wiring pattern through via conductors 53 and 54.
  • the conductor 20b formed by the third wiring pattern is connected to the electrode 4b at an end 92a, and connected to the electrode 4c at an end 93b.
  • the conductor 20a formed by the fourth wiring pattern is connected to the conductor 20b formed by the third wiring pattern through via conductors 51 and 52.
  • the end 91a of the conductor 10a and the end 91b of the conductor 10b constitute a first end of the coil L1.
  • the end 93a of the conductor 10a and the end 93c of the conductor 10b constitute a second end of the coil L1.
  • the end 92a of the conductor 20b and the end 92b of the conductor 20c constitute a first end of the coil L2.
  • the end 93b of the conductor 20b and the end 93d of the conductor 20c constitute a second end of the coil L2.
  • connection point between the coil L1 and the coil L2 exists at the electrode 4c.
  • the distance from the connection point between coil L1 and coil L2 to electrode 4c is zero.
  • the connection point between the coil L1 and the coil L2 will also be referred to as an "intermediate connection point.”
  • the ends 93a, 93c of the coil L1 and the ends 93b, 93d of the coil L2 are located at positions where they overlap with each other. It is located in
  • the electrode 4c includes an intermediate connection point between the coil L1 and the coil L2. As shown in FIG. 4, when applying a voltage to the electrode 4a, the current flowing from the electrode 4a (In) flows from the ends 91a, 91b of the coil L1 to the ends 93a, 93c, and reaches the electrode 4c. It flows into the ends 93b and 93d of the coil L1 via the electrode 4c. The current that has flowed into the ends 93b, 93d of the coil L2 flows to the ends 92a, 92b of the coil L2, and reaches the electrode 4b (Out). In this case, the electrode 4a functions as an In terminal, the electrode 4b functions as an Out terminal, and the electrode 4c functions as an intermediate connection terminal.
  • the coil component 100 In the coil component 100, current flows in parallel circuits in the conductors 10a to 10c and the conductors 20a to 20c laminated in multiple layers. Therefore, the coil component 100 can handle large currents.
  • the conductor 10b and the conductor 10c are connected by the via conductors 53, 54, so that the conductor 10c and the electrodes 4a, 4c are electrically connected via the via conductors 53, 54 and the conductor 10b. (See Figures 1 and 3). Thereby, in order to establish conduction between the conductor 10c and the electrodes 4a, 4c, there is no need to draw out both ends of the conductor 10c and connect them to the electrodes 4a, 4c like the conductor 10b.
  • conductor 20a and electrodes 4b, 4c are electrically connected via via conductors 51, 52 and conductor 20b by connecting conductor 20a and conductor 20b with via conductors 51, 52. (See Figures 1 and 3).
  • Both ends of the conductor 10c may be drawn out and connected to the electrodes 4a, 4c.
  • both ends of the conductor 20a may be drawn out and connected to the electrodes 4a, 4c.
  • via conductors 51 to 54 are unnecessary.
  • the number of ends of the conductors (10, 20) that need to be provided for the electrodes 4a to 4c increases.
  • the ends are may become close to each other, and peeling may easily occur in the laminate 3.
  • conductor 10b and conductor 10c are connected by via conductors 53 and 54, and conductor 20a and conductor 20b are connected by via conductors 51 and 52.
  • peeling of the laminate 3 can be prevented during the manufacturing process of the laminate 3.
  • both ends of the conductor 10c may be connected to the electrodes 4a, 4c, and both ends of the conductor 20a may be connected to the electrodes 4a, 4c.
  • FIG. 5 is a transparent side view of the coil component 100 according to the present embodiment.
  • FIG. 6 is a conceptual diagram for explaining the lamination order of the conductors 10 and 20 in the laminate 3. As shown in FIG.
  • FIG. 6 is a simplified side view of the side view shown in FIG. 5 from the viewpoint of conceptually explaining the lamination order of the conductors 10 and 20 in the laminate 3. Therefore, in FIG. 5, the connection points of the conductors 10 and 20 to the electrodes 4c and 4d and the via conductors 51 to 54 are not shown.
  • the laminated portion 11 includes a conductor 10a that constitutes a part of the coil L1, and conductors 20a and 20b that constitute a part of the coil L2.
  • the laminated portion 21 includes conductors 10b and 10c that constitute a part of the coil L1, and a conductor 20c that constitutes a part of the coil L2.
  • the laminate 3 includes the laminate section 11 (first laminate section) and the laminate section 21 (second laminate section) in which two or more conductors (10, 20) are stacked.
  • the conductor 20a and the conductor 20b are connected by via conductors 51 and 52.
  • the conductor 10b and the conductor 10c are connected by via conductors 53 and 54.
  • the laminated portion 11 and the laminated portion 21 both include conductors (10, 20) laminated in three layers.
  • the conductors 10 and 20 are arranged in each of the laminated portion 11 and the laminated portion 21 so that the conductor 10 forming part of the coil L1 and the conductor 20 forming part of the coil L2 are included.
  • the mutual inductance coupling force between the coil L1 and the coil L2 can be strengthened.
  • the conductor 10a forming part of the coil L1 is arranged in the uppermost layer of the laminated part 11, and the conductor 20c forming part of the coil L2 is arranged in the lowermost layer of the laminated part 21. It is located.
  • the laminated portion 11 includes a portion in which two or more conductors 20 (20a, 20b) are laminated adjacent to the conductor 10 (10a) in the lamination direction, and the laminated portion 21 includes the conductor 10 (10c) and the conductor 20. (20c) are stacked adjacent to each other in the stacking direction.
  • the stacked portion 21 includes a portion where three conductors (10b, 10c, 20c) including the conductor 10 and the conductor 20 are stacked adjacent to each other in the stacking direction.
  • the conductor 20b is arranged in the layer on the laminated part 21 side, and the conductor 20b is arranged in the layer on the laminated part 11 side among the conductors 10 and 20 included in the laminated part 21.
  • the distance d1 between the conductors 10b and the conductor 10b is greater than the distance d2 between the adjacent conductors (10, 20) in the laminated portion 11 and the distance d2 between the adjacent conductors (10, 20) in the laminated portion 21.
  • the distance between the laminated portions 11 and 21 is widened so that d1 is wider than d2. More specifically, the distance (d2) between the conductors (10, 20) is made as narrow as possible, while the distance (d1) between the laminated portions 11 and 21 is made as narrow as possible while taking into account the magnetic coupling force. ).
  • This provides a coil component 100 that can improve the magnetic coupling force between the coil L1 and the coil L2 while reducing the parasitic capacitance that may occur between the laminated part 11 and the laminated part 21. be able to.
  • the laminated body 3 is used in which the distance between adjacent conductors (10, 20) in the laminated portion 11 and the distance between adjacent conductors (10, 20) in the laminated portion 21 are both adjusted to d2. I gave an example.
  • the distance between the adjacent conductors (10, 20) in the laminated portion 11 and the distance between the adjacent conductors (10, 20) in the laminated portion 21 are shorter than d1
  • the distance between the adjacent conductors (10, 20) in the laminated portion 11 is shorter than d1.
  • the spacing between the conductors (10, 20) and the spacing between adjacent conductors (10, 20) in the laminated portion 21 may be different.
  • the spacing between adjacent conductors (10, 20) within the layer section 11 does not have to be the same.
  • the distance between the conductor 10a and the conductor 20a may be different from the distance between the conductor 20a and the conductor 20b.
  • the distance between the conductor 10b and the conductor 10c and the distance between the conductor 10c and the conductor 20c may be made different.
  • the magnetic coupling force between the coils L1 and L2 can be finely adjusted. For example, when the distance between the two conductors 10b and 10c is shortened, the magnetic coupling force between the conductors 10b and 10c increases. As a result, the self-inductance of the coil L1 can be increased.
  • a part of the coil L1 and the coil L2 is By stacking the layers and forming two sets, it is possible to reduce the parasitic capacitance that occurs when obtaining the same M.
  • FIG. 7 is a circuit diagram of filter circuit 1 including coil component 100 according to this embodiment.
  • the filter circuit 1 is, for example, an EMI removal filter, and is a third-order T-type LC filter circuit.
  • a coil component 100 is used in this filter circuit 1.
  • a third-order T-type LC filter circuit is used as the configuration of the filter circuit 1, but a fifth-order T-type LC filter circuit or a higher-order T-type LC filter circuit may be used.
  • the coil component 100 having a similar configuration can also be applied to the above.
  • the filter circuit 1 to which the coil component 100 is applied includes a capacitor C1.
  • the coil component 100 includes a capacitor C due to parasitic capacitance generated in the coil L1 and the coil L2, which are connected in parallel to the coil L1 and the coil L2. If a capacitor C is placed in parallel with such a coil L1 and a coil L2, noise in a high frequency band that is originally intended to be removed through the capacitor C1 described later passes through the capacitor C, resulting in insufficient noise removal. Therefore, it is desirable to suppress such a capacitor C as much as possible.
  • the capacitor C1 is connected to the coil component 100.
  • the capacitor C1 has one end connected to an electrode 4c that constitutes an intermediate connection point between the coil L1 and the coil L2, and the other end connected to the GND wiring.
  • the capacitor C1 is constituted by, for example, a multilayer ceramic capacitor mainly composed of BaTiO3 (barium titanate).
  • a multilayer ceramic capacitor mainly composed of other materials may be used.
  • other types of capacitors such as an aluminum electrolytic capacitor may be used as the capacitor C1.
  • the capacitor C1 has an inductor L3 as a parasitic inductance (equivalent series inductance (ESL)). As shown in FIG. 7, capacitor C1 is represented by a circuit configuration in which inductor L3 is connected in series with capacitor C1a. Note that the capacitor C1 may be configured so that the parasitic resistance (equivalent series resistance (ESR)) is equivalent to a circuit configuration in which the inductor L3 and the capacitor C1a are connected in series.
  • ESR Equivalent series resistance
  • the coil L1 and the coil L2 are magnetically coupled, producing a negative inductance component (-M) in series with the capacitor C1.
  • This negative inductance component is shown as an inductor of -M in FIG.
  • This negative inductance component can cancel the parasitic inductance (inductor L3) of the capacitor C1.
  • the parasitic inductance component of the capacitor C1 can be made smaller in appearance.
  • a filter circuit 1 composed of a capacitor C1, a coil L1, and a coil L2 cancels out the parasitic inductance of the capacitor C1 with a negative inductance component due to the mutual inductance between the coil L1 and the coil L2, thereby reducing the noise damping effect in the high frequency band. can be improved.
  • the intermediate connection point between the coil L1 and the coil L2 is present at the electrode 4c.
  • neither the coil L1 nor the coil L2 is provided with a wiring pattern extending from the intermediate connection point between the coil L1 and the coil L2 to the electrode 4c. Therefore, compared to the conventional configuration in which a wiring pattern is provided from the intermediate connection point between the coil L1 and the coil L2 to the electrode 4c, the distance of the wiring pattern does not change due to manufacturing variations, so the parasitic inductance It is possible to prevent variations in the size of the components. Since the coil component 100 according to the present embodiment is not provided with an extra wiring pattern that causes variations in the magnitude of the parasitic inductance component, there is no parasitic inductance component that depends on the wiring pattern.
  • the coil component 100 it is possible to reduce the effort and cost required to maximize accuracy in order to suppress such variations. Therefore, according to the present embodiment, it is possible to provide a coil component that can prevent variations in the size of parasitic inductor components and a filter circuit including the coil component.
  • the coil component 100 when used as a component for removing noise from a power line and current is caused to flow from the electrode 4a to the electrode 4b, the current flowing inside the laminate 3 passes through the electrode 4c outside the laminate 3. At this time, compared to the conventional pattern in which the current continues to flow inside the laminate 3, the electrode 4c exhibits a heat dissipation function, and the heat generated by the current is dissipated in the electrode 4c. Therefore, the heat dissipation effect of the coil component 100 can be improved.
  • the coil component 100 has the effect of simplifying the procedure for testing continuity of the electrodes 4a to 4c and the coils L1 and L2.
  • a conventional coil component in which a wiring pattern is provided from the intermediate connection point between coil L1 and coil L2 to electrode 4c, it is not possible to test the continuity between coil L1 and coil L2 by simply testing the continuity between electrode 4a and electrode 4b. It is not possible to confirm that there is no problem in conduction between the intermediate connection point and the electrode 4c. Since another wire is inserted between the intermediate connection point between the coil L1 and the coil L2 and the electrode 4c, it is necessary to inspect the disconnection state of this other wire and the connection state between this other wire and the electrode 4c. .
  • the electrode 4c corresponding to the intermediate connection terminal functions as a conduction line that connects the coil L1 and the coil L2. Therefore, in the coil component 100, by testing the continuity between the electrodes 4a and 4b, it is possible to complete the continuity test of the electrodes 4a to 4c and the coils L1 and L2.
  • the electrodes 4a and 4b function as mounting terminals connected in series to the power line. That is, the electrode 4a and the electrode 4b are constituted by mounting terminals.
  • the size of the mounting terminals can be made larger compared to the case where the electrodes 4a and 4b are provided on the short sides of the laminate 3. can do.
  • the heat generated in the mounting portion can be sufficiently dissipated by the width of the electrode.
  • the ends 91a and 91b of the coil L1 are arranged on the electrode 4a, which is wide on the long side of the laminate 3, and the width on the long side of the laminate 3 is wide.
  • the ends 92a and 92b of the coil L2 are arranged on the wide electrode 4b, it is also possible to form a coil with a large opening by taking advantage of the distance from one end of the long side to the other end.
  • the coil component 100 is not limited to this, and may have a square shape without long sides or short sides, or may have a circular or elliptical shape instead of a substantially rectangular parallelepiped. Good too. By making the coil circular, there are no locally high current density areas within the conductor forming the coil, so failures due to heat generation are less likely to occur even in applications where large currents flow.
  • FIG. 8 is a conceptual diagram showing a first modification regarding the stacking order of the conductors 10 and 20 in the stacked body 301.
  • the laminate 301 according to Modification 1 corresponds to an example in which one conductor 10 is added to the uppermost layer of the laminate part 11 of the laminate 3 and one conductor 10 is removed from the laminate part 21 of the laminate 3.
  • the laminate section 11 is composed of four layers of conductors 10 and 20, and the laminate section 21 is composed of two layers of conductors 10 and 20.
  • each of the laminate portion 11 and the laminate portion 21 includes a conductor 10 constituting a part of the coil L1 and a conductor 20 constituting a part of the coil L2.
  • Conductors 10 and 20 are arranged.
  • the conductor 10a forming part of the coil L1 is arranged in the uppermost layer of the laminated part 11, and the conductor 10a forming part of the coil L2 is arranged in the lowermost layer of the laminated part 21.
  • a conductor 20c is arranged.
  • the interval between the laminate portions 11 and 21 is widened so that d1 is wider than d2.
  • Modification 1 it is possible to reduce the parasitic capacitance that may occur between the laminated portion 11 and the laminated portion 21, and to improve the magnetic coupling force between the coil L1 and the coil L2. be.
  • the number of layers in the laminate portion 11 and the number of layers in the laminate portion 21 are different. In this way, by making the number of layers of the laminated portion 11 and the number of layers of the laminated portion 21 different, it is possible to finely adjust the value of the self-inductance of each of the coils L1 and L2. As a result, it is also possible to finely adjust the mutual inductance of the coils L1 and L2.
  • FIG. 9 is a conceptual diagram showing a second modification regarding the stacking order of the conductors 10 and 20 in the stacked body 302.
  • the laminate 302 according to Modification 2 corresponds to an example in which one conductor 10 is removed from the laminate portion 21 of the laminate 3.
  • the configuration of the laminated portion 11 of the laminated body 302 is the same as the configuration of the laminated portion 11 of the laminated body 3.
  • the laminate section 11 is composed of three layers of conductors 10 and 20
  • the laminate section 21 is composed of two layers of conductors 10 and 20.
  • the laminated portion 11 and the laminated portion 21 each include the conductor 10 constituting a part of the coil L1 and the conductor 20 constituting a part of the coil L2.
  • Conductors 10 and 20 are arranged.
  • a conductor 10a constituting a part of the coil L1 is arranged in the uppermost layer of the laminated part 11, and a part of the coil L2 is arranged in the lowermost layer of the laminated part 21.
  • a constituting conductor 20c is arranged.
  • the interval between the laminate portions 11 and 21 is widened so that d1 is wider than d2.
  • Modification 2 it is possible to improve the magnetic coupling force between the coil L1 and the coil L2 while reducing the parasitic capacitance that may occur between the laminated portion 11 and the laminated portion 21. be.
  • the number of layers in the laminate section 11 and the number of layers in the laminate section 21 are different.
  • the number of layers of the laminated portion 11 and the number of layers of the laminated portion 21 are different.
  • FIG. 10 is a conceptual diagram showing a third modification regarding the stacking order of the conductors 10 and 20 in the stacked body 303.
  • a laminate 303 according to Modification 3 includes a laminate section 11, a laminate section 21, and a laminate section 31 including a combination of conductors 10 and 20.
  • the distance between the laminated portion 11 and the laminated portion 21 and the distance between the laminated portion 21 and the laminated portion 31 are each d1.
  • the laminated structure of the laminated body 303 according to the third modification corresponds to a structure in which a laminated part is added between the laminated part 11 and the laminated part 21 in the laminated body 3 of FIG. 6 described as the present embodiment.
  • the two conductors 20 (20a, 20b) are laminated next to the conductor 10 (10a) in the laminated part 11, and the conductor 10 (10c) is laminated in the laminated part 21.
  • the conductor 20 (20c) and the conductor 20 (20c) are stacked adjacent to each other.
  • the distance d1 between the laminated portion 11 and the laminated portion 21 is greater than the distance d2 between adjacent conductors (10, 20) in the laminated portion 11 and the distance d2 between adjacent conductors (10, 20) in the laminated portion 21.
  • the two conductors 20 (20c, 20d) are stacked next to the conductor 10 (10c) in the stacked part 21, and the conductor 10 (10e) is stacked in the stacked part 31.
  • the conductor 20 (20e) and the conductor 20 (20e) are stacked adjacent to each other.
  • the distance d1 between the laminated portion 21 and the laminated portion 31 is greater than the distance d2 between adjacent conductors (10, 20) in the laminated portion 11 and the distance d2 between adjacent conductors (10, 20) in the laminated portion 21.
  • the laminated part may be composed of conductors (10, 20) laminated in four or more layers.
  • the distance between adjacent conductors (10, 20) in the laminated portion 11, the distance between adjacent conductors (10, 20) in the laminated portion 21, and the distance between adjacent conductors (10, 20) in the laminated portion 31. may be designed at any interval as long as it is shorter than d1.
  • the distance between adjacent conductors in the laminated portion 11 and the laminated portion 21 and the distance between adjacent conductors in the laminated portion 21 and the laminated portion 31 do not have to be the same d1, and are smaller than the distance between the conductors in each laminated portion. It is fine as long as it is a long distance.
  • the distance between the laminate portions 11 and 21 and the distance between the laminate portions 21 and 31 are adjusted so that d1 is wider than d2. widening the interval.
  • FIG. 11 is a conceptual diagram showing a fourth modification regarding the stacking order of the conductors 10 and 20 in the stacked body 304.
  • a laminate 304 according to modification 4 is an example in which one conductor 10 is added to the top layer of the laminate section 11 of the laminate 3, and one conductor 20 is added to the bottom layer of the laminate section 21 of the laminate 3. Applies to.
  • both the laminate section 11 and the laminate section 21 are composed of four layers of conductors 10 and 20.
  • the conductors 10a, 10b and the conductors 20a, 20b are laminated in the laminated part 11, and the conductors 10c, 10d and the conductors 20c, 20d are laminated in the laminated part 21.
  • the lamination pattern of the conductors 10 and 20 in the lamination part 11 and the lamination pattern of the conductors 10 and 20 in the lamination part 21 are common. That is, in the laminate 304 according to the fourth modification, the conductors 10 are laminated in the upper two layers of both the laminated portion 11 and the laminated portion 21, and the conductors 20 are laminated in the lower two layers.
  • the stacking order of the conductor 10 and the conductor 20 in the stacked part 11 is the same as the stacked order of the conductor 10 and the conductor 20 in the stacked part 21. In this way, by standardizing the lamination order of the conductor 10 and the conductor 20 in the plurality of laminated parts 11 and 21, it is possible to reduce the incidence of manufacturing defects.
  • Modifications 1 to 4 have been explained in order.
  • the laminated parts 11 and 21 of Modifications 1 to 4 the case where the maximum number of conductors 10 or 20 that can be successively laminated is two has been described.
  • the conductors 10 or 20 may be stacked such that the maximum number of conductors 10 or 20 that can be consecutively stacked is three or more.
  • a conductor 20 may be additionally placed under the lowest layer conductor 20 (20b) in the laminated portion 11.
  • a conductor 20 may be additionally placed under the conductor 20 in the lowest layer of each of the laminated parts 11, 21, and 31.
  • the conductor (10, 20) in the lowest layer of the laminated portion 11 is different from the conductor (10, 20) in the uppermost layer of the laminated portion 21.
  • the conductor 20 is arranged at the lowest layer of the laminated section 11 shown in FIG. 6, and the conductor 10 is arranged at the uppermost layer of the laminated section 21 shown in FIG.
  • the conductor 10 (or the conductor 20) may be placed in both the lowest layer of the laminated portion 11 and the highest layer of the laminated portion 21.
  • each of coil L1 and coil L2 constitutes a single loop
  • each of conductors 10a-10c constitutes a single loop of coil L1
  • each of conductors 20a-20c constitutes a single loop of coil L2.
  • At least one of the coil L1 and the coil L2 may be configured in a spiral loop pattern.
  • a single loop of the coil L1 may be configured by connecting the conductors 10a to 10c in series
  • a single loop of the coil L2 may be configured by connecting the conductors 20a to 20c in series.
  • the coil component described in Paragraph 1 includes an insulator having a pair of principal surfaces facing each other, two or more first conductors forming a first coil, and three or more first conductors forming a second coil. three or more second conductors, the first conductor and the second conductor are laminated in parallel to the pair of main surfaces of the insulator, the first coil, and the three or more second conductors of the plurality of conductors.
  • the first coil and the second coil are arranged such that their winding axes are oriented in the normal direction to the pair of principal surfaces, and the openings of each of the first coil and the second coil are
  • the insulator includes a first laminated portion and a second laminated portion, and the first laminated portion has two or more second conductors adjacent to each other in the lamination direction with respect to the first conductor.
  • the second laminated portion includes a laminated portion where the first conductor and the second conductor are laminated adjacent to each other in the lamination direction, and the second laminated portion includes a portion where the first conductor and the second conductor are laminated adjacent to each other in the lamination direction.
  • the distance between the conductor placed in the layer on the second laminated part side and the conductor placed in the layer on the first laminated part side among the first conductor and second conductor included in the second laminated part is the first
  • the distance between adjacent conductors in the laminated portion is greater than the distance between adjacent conductors in the laminated portion and the distance between adjacent conductors in the second laminated portion.
  • the second laminated portion includes a portion where three conductors including a first conductor and a second conductor are laminated adjacent to each other in the lamination direction.
  • each of the first coil and the second coil has a single-loop coil shape when the insulator is viewed from the normal direction.
  • each of the two or more first conductors has a coil shape of a single loop of the first coil
  • each of the three or more second conductors has a coil shape of a single loop of the second coil.
  • the plurality of side surfaces include a first side surface, a second side surface, and a third side surface
  • the plurality of electrodes include a first electrode provided on the first side surface and a second electrode provided on the second side surface.
  • the first coil includes a first conductor configured by the first wiring pattern, and a first conductor configured by the second wiring pattern
  • the second coil includes a first conductor configured by the first wiring pattern, and a first conductor configured by the second wiring pattern.
  • the first conductor configured by the first wiring pattern is connected to the first electrode and the third electrode.
  • the first conductor formed by the second wiring pattern is connected to the first conductor formed by the first wiring pattern by the first via conductor
  • the second conductor formed by the third wiring pattern is connected to the first conductor formed by the first wiring pattern.
  • a second conductor connected to the electrode and the third electrode and formed by the fourth wiring pattern is connected to a second conductor formed by the third wiring pattern and a second via conductor.
  • the filter circuit of Item 7 includes the coil component according to any one of Items 1 to 6, and a capacitor connected to the coil component.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
PCT/JP2023/017872 2022-06-01 2023-05-12 コイル部品、およびこれを含むフィルタ回路 Ceased WO2023233966A1 (ja)

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CN202390000304.0U CN222980246U (zh) 2022-06-01 2023-05-12 线圈部件和包含该线圈部件的滤波电路
JP2024524293A JP7694825B2 (ja) 2022-06-01 2023-05-12 コイル部品、およびこれを含むフィルタ回路

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012124470A (ja) * 2010-11-18 2012-06-28 Panasonic Corp コモンモードノイズフィルタ
WO2018012400A1 (ja) * 2016-07-15 2018-01-18 株式会社村田製作所 高周波トランスおよび移相器
WO2020170708A1 (ja) * 2019-02-22 2020-08-27 株式会社村田製作所 フィルタ回路モジュール、フィルタ回路素子、フィルタ回路及び通信装置
JP2022008603A (ja) * 2019-10-30 2022-01-13 株式会社村田製作所 コイル部品および、これを含むフィルタ回路
WO2022070888A1 (ja) * 2020-10-01 2022-04-07 株式会社村田製作所 コイル部品、これを含むフィルタ回路、および電子機器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012124470A (ja) * 2010-11-18 2012-06-28 Panasonic Corp コモンモードノイズフィルタ
WO2018012400A1 (ja) * 2016-07-15 2018-01-18 株式会社村田製作所 高周波トランスおよび移相器
WO2020170708A1 (ja) * 2019-02-22 2020-08-27 株式会社村田製作所 フィルタ回路モジュール、フィルタ回路素子、フィルタ回路及び通信装置
JP2022008603A (ja) * 2019-10-30 2022-01-13 株式会社村田製作所 コイル部品および、これを含むフィルタ回路
WO2022070888A1 (ja) * 2020-10-01 2022-04-07 株式会社村田製作所 コイル部品、これを含むフィルタ回路、および電子機器

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CN222980246U (zh) 2025-06-13
JPWO2023233966A1 (https=) 2023-12-07

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