Integrated magnetic component

Abstract

The invention relates to an integrated magnetic component (1) comprising: a common mode inductor (4) formed by a common mode core (2) and a winding (3) wound on said common mode core (2); a differential mode inductor formed by a differential mode core (5) and the winding (3), the axial direction (6) being defined parallel to the longitudinal extension (7) of the differential mode core (5); the base plate (10) integrally comprises a cavity part (11) and at least one side wall (12), the cavity part (11) accommodates the differential mode core part (5), and the at least one side wall (12) is arranged in a radial direction (9) perpendicular to the axial direction (6), so that the common mode inductor (4) and the differential mode core part (5) are separated from each other in the radial direction (9). And an outer surface (8) at least partially surrounding the winding (3) and / or the common mode core (2) opposite the differential mode core (5).

Description

Technical Field

[0001] The present invention relates to an integrated magnetic component. Background Art

[0002] Generally, an integrated magnetic component for a common-mode choke is known from, for example, EP3683811A1. The integrated magnetic component includes a common-mode inductor and a differential-mode inductor, wherein the common-mode inductor is formed by a common-mode core and a winding wound around the common-mode core. Furthermore, the integrated magnetic component includes a differential-mode inductor formed by a differential-mode core and the winding. Furthermore, the integrated magnetic component includes a printed circuit board to which the components are mounted.

[0003] JP2021114487A discloses an inductor for a common mode choke coil. The inductor includes a fixing member, a magnetic core, and a coil. The fixing member is provided with a partition portion for separating the coil portions, and a base plate for mounting the magnetic core.

[0004] From US 2022 / 0044860 A1 a magnetic device for a common mode choke is known, which has a base, a wound core and spacers.

[0005] From TWM633453U, an inductor for a common mode choke is known, which comprises a magnetic core having a hollow portion, in which magnetic elements are arranged, and a base to which these elements are fixed.

[0006] However, in these magnetic components, the common-mode and differential-mode cores must be carefully positioned to avoid saturation of the differential-mode core. Furthermore, positioning the components during manufacturing to ensure electrical isolation is challenging. Especially when potting such magnetic components, the components may shift or move relative to each other, resulting in asymmetric gaps or insulation distances between the components. Summary of the Invention

[0007] The object of the present invention is to overcome these drawbacks. In particular, it is an object of the present invention to provide an integrated magnetic component that is easy to manufacture while ensuring appropriate insulation and saturation distances between components.

[0008] In particular, the integrated magnetic component of the present invention achieves a solution to these purposes. The integrated magnetic component includes a common-mode inductor formed by a common-mode core and a winding wound on the common-mode core. Further, the integrated magnetic component includes a differential-mode inductor formed by a differential-mode core and the winding. The axial direction is defined as being parallel to the longitudinal extension of the differential-mode core. In addition, the integrated magnetic component includes a base plate to which the common-mode inductor and the differential-mode core are fixed. The integrated magnetic component is characterized in that the base plate as a whole includes a cavity portion and at least one side wall. The cavity portion accommodates the differential-mode core. The at least one side wall at least partially surrounds the winding and / or the outer surface of the common-mode core opposite to the differential-mode core along a radial direction perpendicular to the axial direction.

[0009] Thus, in particular, because the at least one side wall of the base plate and the cavity portion are integrally formed, the common-mode inductor and the differential-mode inductor can be easily and reliably positioned during the manufacturing process of the integrated magnetic component. Preferably, the at least one side wall provides insulation between the winding and other components near the integrated magnetic component, and / or provides a separation / saturation distance between the common-mode core and these other components. As a result, the integrated magnetic component is both easy to manufacture and provides reliable insulation and saturation distances for its components. In addition, the at least one side wall also prevents the winding and / or the common-mode core from shifting / moving, thereby ensuring the position of these components.

[0010] In some embodiments, the base plate further includes through-holes for guiding the coil terminals of the windings. The terminals (i.e., ends) of the windings are inserted through the through-holes. Thus, the through-holes in the base plate provide separation and insulation between the coil terminals. Furthermore, the through-holes provide for the positioning of these coil terminals, allowing the integrated magnetic component to be easily and reliably connected to other components, such as a printed circuit board (PCB).

[0011] In some embodiments, the base plate further comprises a flat plate portion, from which the at least one sidewall extends. Preferably, the plate portion and the at least one sidewall are integrally formed with each other. The plate portion is configured to secure the common-mode and differential-mode inductors and their components.

[0012] In some embodiments, the through hole is formed in the plate portion of the bottom plate. Thus, the coil terminal is preferably guided downwards, ie away from the plate portion and the inductor in the axial direction.

[0013] Additionally or alternatively, the through hole is formed in at least one of the at least one side wall.Thereby, the coil terminal is guided radially outwards, ie in a direction parallel to the radial direction.

[0014] In some embodiments, at least one sidewall, and in particular, one or more or all sidewalls, extend perpendicularly from a plane defined by the extension of the plate portion. In other words, the substantially flat plate portion defines a plane of extension through its substantial extension (i.e., excluding its thickness), and the at least one sidewall extends substantially perpendicularly from this plane. In particular, the at least one sidewall extends from the plate portion in a direction parallel to the axial direction. Preferably, the axial direction is perpendicular to the aforementioned plane of extension of the plate portion.

[0015] In some embodiments, the at least one side wall defines the outer periphery or outer wall of the integrated magnetic component, in particular the base plate. Preferably, no component of the integrated magnetic component extends radially beyond the at least one side wall, with the possible exception of the radially guided coil terminals. In a preferred combination with through-holes formed in the plate portion, i.e., the coil terminals are guided axially downward, no component of the integrated magnetic component extends radially beyond the at least one side wall. More preferably, the radially outer surface of the at least one side wall is flush with the radial outer periphery of the plate portion.

[0016] In some embodiments, the at least one side wall completely surrounds the winding and / or the common-mode core along a circumferential direction perpendicular to the axial direction. Preferably, the at least one side wall in this embodiment is a single side wall, which completely surrounds the winding and / or the common-mode core along the circumferential direction. Preferably, the term "completely surrounds" does not exclude the possibility of providing through holes on the side wall. In addition, "the at least one side wall completely surrounds" also includes the case where multiple side walls are provided, and the multiple side walls are not separated by gaps along the circumferential direction. For example, the multiple side walls can overlap along the radial direction, that is, they can include parts that follow each other closely in the radial direction and are arranged closely to each other in the circumferential direction.

[0017] In some embodiments, the at least one sidewall may include a plurality of sidewalls. When the plurality of sidewalls completely surround the circumference, the plurality of sidewalls may include a connecting portion connecting the plurality of sidewalls, for example, serving as a base of the sidewall integrally connected to the plate portion. In this case, the plurality of sidewalls may be separated by gaps in portions not including the connecting portion.

[0018] In some embodiments, the height of the at least one side wall in the axial direction is equal to or greater than the height of the winding and / or the common mode core. In the preferred case where the at least one side wall is integral with the plate portion and extends axially from the plate portion, the height of the side wall is preferably defined as being measured or obtained from the axial bottom of the plate portion to the axial top of the at least one side wall, i.e., including the height of the at least one side wall and the thickness of the plate portion.

[0019] In some embodiments, in the case of a plurality of side walls, the heights of the side walls are equal or different from each other. For example, according to the requirements of the external dimensions of the integrated magnetic component, the plurality of side walls can be formed to have different heights accordingly.

[0020] Furthermore, in the case of a single side wall, the height of the side wall is substantially the same along the circumference, in particular when the side wall completely surrounds the circumference.

[0021] Thus, the at least one side wall provides protection, insulation and separation of components, in particular with respect to possible other components located axially above the integrated magnetic component. Furthermore, the at least one side wall can also provide protection against damage caused by dropping the integrated magnetic component.

[0022] In some embodiments, the interior space defined by the at least one sidewall is filled with glue and / or potting material. Thus, the at least one sidewall provides a housing for the glue and / or potting material (e.g., resin) and serves as an outer shell for the integrated magnetic component. The at least one sidewall is not removed after potting.

[0023] In some embodiments, the cavity portion housing the differential-mode core includes one or more cavity wall portions extending axially from the plate portion. Advantageously, the cavity wall portions provide a housing (cavity) for the differential-mode core and also provide insulation / separation of the differential-mode core from other components of the integrated magnetic component.

[0024] In one embodiment, the one or more cavity wall portions extend parallel to the at least one side wall, so that the insulation / separation distance between the differential mode core portion inserted into the cavity portion and at least partially surrounded by the cavity wall portion and other components remains substantially constant in the axial direction.

[0025] Furthermore, the one or more cavity wall portions are integrally formed with the plate portion, thereby allowing the differential-mode core and the common-mode inductor to be easily inserted into the substrate, improving manufacturing efficiency and reliability, and increasing the reliability of the insulation / separation distances between the components of the integrated magnetic component.

[0026] In some embodiments, the axial height of the cavity portion is equal to or greater than the height of the differential-mode core. This ensures that the differential-mode core is securely held in place by the cavity portion. Furthermore, the separation distance between the differential-mode core and any other components axially above the integrated magnetic component is maintained, thereby protecting the differential-mode core from damage.

[0027] In some embodiments, the height of the cavity portion in the axial direction is substantially equal to the height of the at least one side wall. Such an embodiment provides ease of manufacturing, protection of the components of the integrated magnetic component, and reliable insulation / separation distance, especially in the axial direction.

[0028] In some embodiments, the integrated magnetic component includes a cover that includes or consists of a thermal adhesive layer and / or an insulating sheet layer (e.g., Kapton®), and / or includes or consists of a metal sheet provided with or wrapped with an insulating material (e.g., Kapton®). The cover is preferably further connected to or is part of a chassis.

[0029] Furthermore, in the embodiment in which a cover is provided, such a cover is arranged substantially flush, in particular perpendicular to the axial direction, on the at least one side wall and the cavity portion, which also provides additional insulation / separation reliability.

[0030] In some embodiments, the cavity is partially filled with glue and / or potting material. Depending on the possible fit and tolerances of the differential-mode core within the cavity, the glue and / or potting material can preferably be positioned axially above and / or below the differential-mode core, or circumferentially above and / or below the differential-mode core in both radial and axial directions. This ensures a reliable insulation / separation distance between the differential-mode core and other components of the integrated magnetic component. Furthermore, because a mold is not required for gluing / potting, manufacturing is more efficient and reliable.

[0031] In some embodiments, the cavity portion includes a plurality of partition walls, each extending to the common-mode core and separating the winding sections of the winding wound on the common-mode core. Thus, the base plate as a whole also provides insulation and separation for the common-mode core windings, thereby improving manufacturing efficiency and reliability. Furthermore, the partition walls prevent the windings from slipping, further improving manufacturing reliability and the overall service life and reliability of the integrated magnetic component.

[0032] In some embodiments, the partition wall is disposed on a radially outer surface of the cavity portion and radially protrudes and extends from a cavity wall portion of the cavity portion.

[0033] In some embodiments, the common-mode core is arranged such that its inner surface contacts the partition wall. Thus, the length of the partition wall, particularly its radial length, provides or predetermines the separation distance between the common-mode core and other components of the integrated magnetic component, such as the separation distance between the common-mode core and the differential-mode core. This makes manufacturing more reliable and efficient, and the service life of the integrated magnetic component is further improved.

[0034] In some embodiments, the integrated magnetic component includes a plurality of winding sections, such as three or more, four or more, or six or more winding sections. The number of winding sections may correspond to the number of phases of the integrated magnetic component, such as four winding sections in the case of three phases and a neutral line.

[0035] In some embodiments, the winding includes four separate winding sections, and the cavity section includes four partition walls that separate and insulate the winding sections.

[0036] In some exemplary embodiments, in a plan view along the axial direction, the common-mode core is annular, such as an elliptical or toroidal shape. In some embodiments, the common-mode core is rectangular (also commonly referred to as a "D-shaped core"), particularly with rounded corners. The aforementioned plan view is a cross-sectional view taken along a plane perpendicular to the axial direction.

[0037] In some embodiments, the differential-mode core and the cavity are cylindrical. When parallel to the at least one sidewall, the at least one sidewall (i.e., one or all sidewalls taken together) and the cavity are each cylindrical. Advantageously, the cavity and the at least one sidewall do not need to be identical or parallel. For example, the differential-mode core and the cavity may be cylindrical, while the common-mode core and the at least one sidewall may be rectangular.

[0038] In some embodiments, the differential mode core and the cavity are rectangular. When parallel to the at least one sidewall, the at least one sidewall (i.e., one or all sidewalls taken together) and the cavity are each rectangular. As described above, the at least one sidewall and the cavity do not need to have the same shape. For example, in this configuration, the cavity is rectangular and the at least one sidewall is cylindrical.

[0039] In some embodiments, the radial thickness of the one or more cavity wall portions corresponds to a predetermined air gap between the common-mode core portion and the differential-mode core portion. Thus, the cavity wall portions are preferably configured with a predetermined thickness to avoid saturation of the differential current passing through the windings. "Air gap" herein generally refers to a space with a magnetic permeability similar to that of air (even if filled with a material, such as the cavity wall portions, rather than air).

[0040] In some embodiments, the base plate includes or consists of a plastic or ceramic material.

[0041] In this context, the term "integral" means that the base plate and its corresponding components are formed as a single piece. For example, the base plate is preferably manufactured using a single mold, such as in the case of injection molding. The term "integral" refers to a unitary structure. In other embodiments, the components of the base plate are manufactured separately, such as by injection molding, and then glued or welded together. The term "integral" in this context does not include separate components that are only held together by potting or resin materials.

[0042] The common mode core and / or the differential mode core include or consist of a magnetic material.

[0043] The present invention also relates to a common mode choke comprising at least one integrated magnetic component according to any one of the above examples.

[0044] The above-described embodiments and configurations may be combined. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Shown is an exploded view of an integrated magnetic component according to a first embodiment of the present invention.

[0046] Figure 2 FIG. 1 is an assembled perspective view of an integrated magnetic component according to a first embodiment of the present invention.

[0047] Figure 3 FIG. 1 shows an assembled top view of an integrated magnetic component according to a first embodiment of the present invention.

[0048] Figure 4 An exploded view of an integrated magnetic component according to a second embodiment of the present invention is shown.

[0049] Figure 5 FIG. 1 is an assembled perspective view of an integrated magnetic component according to a second embodiment of the present invention.

[0050] Figure 6 FIG. 1 shows an assembled top view of an integrated magnetic component according to a second embodiment of the present invention.

[0051] Figure 7 An exploded view of an integrated magnetic component according to a third embodiment of the present invention is shown.

[0052] Figure 8 FIG. 1 is an assembled perspective view of an integrated magnetic component according to a third embodiment of the present invention.

[0053] Figure 9 Shown is an exploded view of an integrated magnetic component according to a fourth embodiment of the present invention.

[0054] Figure 10 FIG. 1 is an assembled perspective view of an integrated magnetic component according to a fourth embodiment of the present invention. DETAILED DESCRIPTION

[0055] Further details, advantages and features of embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0056] The first embodiment of the present invention will refer to Figures 1 to 3 Provide a description.

[0057] Figure 1 Shown is an exploded view of an integrated magnetic component 1 according to a first embodiment of the present invention. Figure 2 FIG. 1 shows an assembled perspective view of an integrated magnetic component 1 according to a first embodiment of the present invention. Figure 3 FIG. 1 shows an assembled top view of an integrated magnetic component 1 according to a first embodiment of the present invention.

[0058] The integrated magnetic component 1 includes a common mode inductor 4 formed by a common mode core 2 and a winding 3 wound around the common mode core 2 . Furthermore, the integrated magnetic component 1 includes a differential mode inductor formed by a differential mode core 5 and the winding 3 .

[0059] Here and hereinafter, the axial direction 6 is defined as being parallel to the longitudinal extension 7 of the differential mode core 5 .

[0060] Furthermore, the integrated magnetic component 1 includes a bottom plate 10 to which the common mode inductor 4 and the differential mode core 5 are fixed. The bottom plate 10 as a whole includes a cavity portion 11 and at least one side wall 12. Figure 1 In the embodiment shown, the base plate 10 comprises exactly two side walls 12 .

[0061] The cavity portion 11 accommodates the differential mode core 5. Here, the side wall 12 partially surrounds the winding 3 and / or the outer surface 8 of the common mode core 2 opposite to the differential mode core 5 in the radial direction 9 perpendicular to the axial direction 6.

[0062] Here, since the side wall 12 and the cavity portion 11 of the bottom plate 10 are integrally formed, the common mode choke 4 and the differential mode core 5 can be easily and reliably positioned during the manufacturing process of the integrated magnetic component 1 .

[0063] Can be obtained from Figure 2 and Figure 3 As can be seen, sidewalls 12 provide insulation between windings 3 and other components near integrated magnetic component 1, and / or provide a separation / saturation distance between common-mode core 2 and these other components. Thus, integrated magnetic component 1 is both easy to manufacture and provides reliable insulation and saturation distances for its components. Furthermore, sidewalls 12 prevent deflection / movement of windings 3 and / or common-mode core 2, thereby ensuring the position of these components.

[0064] The bottom plate 10 further includes through-holes 13 for guiding the coil terminals 14 of the winding 3. The terminals 14 (i.e., ends) of the winding 3 are inserted into and pass through the through-holes 13. Thus, the through-holes 13 on the bottom plate 10 provide separation and insulation for the coil terminals 14.

[0065] The bottom plate 10 has a plate portion 15 having a flat plate shape, from which the side walls 12 extend. The plate portion 15 and the side walls 12 are integrally formed with each other. The plate portion 15 is used to fix the common mode inductor 4 and the differential mode core 5.

[0066] The side walls extend perpendicularly from a plane 16 defined by the extension of the plate portion 15. In other words, the substantially flat plate portion 15 defines an extension plane 16 by its substantial extension (i.e., by its extension excluding its thickness), and the side walls extend perpendicularly from this plane. In particular, the side walls extend from the plate portion 15 in a direction parallel to the axial direction 6.

[0067] In the present embodiment, the through-holes 13 are formed in the plate portion 15 of the base plate 10. Thus, the coil terminals 14 are guided downward, ie, away from the plate portion 15 and the inductors 4 and 5 in the axial direction.

[0068] Additionally or alternatively, a through hole 13 is formed in at least one of the at least one side wall 12. Thereby, the coil terminal 14 is guided radially outwards, ie in a direction parallel to the radial direction 9.

[0069] In this embodiment, the cavity portion 11 that accommodates the differential-mode core 5 includes a cavity wall portion 17. The cavity wall portion 17 extends from the plate portion 15 in the axial direction 6. Here, the cavity wall portion 17 extends substantially parallel to the side wall 12. Thus, the insulation / separation distance between the differential-mode core 5 inserted into the cavity portion 11 and completely surrounded by the cavity wall portion 17 and other components remains substantially constant in the axial direction 6.

[0070] and Figures 1 to 3 As shown, cavity wall portion 17 is integrally formed with plate portion 15 and sidewall 12. Cavity portion 11 has a height 18 in the axial direction 6 that is equal to or greater than the height (longitudinal extension) 7 of differential mode core 5. Furthermore, the radial thickness of cavity wall portion 17 predetermines the air gap between common mode core 2 and differential mode core 5. Consequently, differential mode core 5 is securely secured by cavity portion 11.

[0071] The cavity portion 11 further includes a plurality of partition walls 20 on its radially outer surface 19, which extend in the radial direction 9 and separate the winding portions 21 of the winding 3 wound on the common mode core 2 (see in particular Figure 3 ).

[0072] Here, the common-mode core 2 is arranged so that its radial inner surface 22 contacts the partition wall 20. Thus, the radial length of the partition wall 20 advantageously provides or predetermines the separation distance between the common-mode core 2 and other components of the integrated magnetic component 1, particularly between the common-mode core 2 and the differential-mode core 5. This makes manufacturing more reliable and efficient, and the service life of the integrated magnetic component 1 is further improved.

[0073] Advantageously, the winding 3 of this embodiment comprises four separate winding sections 21. The cavity portion 11 comprises four partition walls 20 that separate and insulate the winding sections 21. Alternatively, the winding 3 may comprise two, three, six, or more winding sections 21, in particular corresponding to the number of phases of the integrated magnetic component.

[0074] In this exemplary embodiment, the common mode core 2 is arranged in a plan view along the axial direction 6 ( Figure 3 The differential mode core 5 and the cavity portion 11 are both cylindrical.

[0075] Can be obtained from Figures 1 to 3 As can be seen, the base plate 10 is integrally formed with the cavity portion 11, the plate portion 15, and the sidewalls 12. The partition wall 20 and the cavity wall portion 17 of the cavity portion 11 are also integrally formed with the plate portion 15 and the sidewalls 12. In this embodiment, the entire base plate 10, including its constituent elements, is formed as a single piece and comprises plastic and / or ceramic. For example, the base plate 10 is formed using a single mold, particularly by injection molding.

[0076] Now, refer to Figures 4 to 6 A second embodiment of the present invention will be described. Figure 4 An exploded view of an integrated magnetic component 1 according to a second embodiment of the invention is shown. Figure 5 FIG. 1 shows an assembled perspective view of an integrated magnetic component 1 according to a second embodiment of the present invention. Figure 6 FIG. 1 shows an assembled top view of an integrated magnetic component 1 according to a second embodiment of the present invention.

[0077] Can be obtained from Figures 4 to 6 It can be seen that the common mode core 2 of this embodiment is elliptical ring-shaped. In addition, the differential mode core 5 and the cavity portion 11 are rectangular, for example, square. Figures 4 to 6 Not directly visible.

[0078] In this embodiment, two partition walls 20 extend to the common mode core 2 and separate the winding parts 21 of the winding 3 wound on the common mode core 2. These partition walls 20 extend in directions parallel to the radial direction 9. In addition, in particular, Figure 6 As can be seen in FIG. 1 , the cavity portion 11 includes a partition wall spacer portion 23 , which keeps the partition wall 20 away from the cavity wall portion 17 to properly separate the winding portion 21 .

[0079] In the aforementioned first and second embodiments, each side wall 12 surrounds or encircles only a portion of the winding and / or common mode core along the circumferential direction 26 perpendicular to the axial direction 6 .

[0080] Now, refer to Figure 7 and Figure 8 , describing the third embodiment of the present invention. Figure 7 FIG. 1 shows an exploded view of an integrated magnetic component 1 according to a third embodiment of the present invention, and FIG. Figure 8 FIG. 1 shows an assembled perspective view of an integrated magnetic component 1 according to a third embodiment of the present invention.

[0081] from Figure 7 It can be seen that the construction of the common mode inductor 4 is similar to Figures 1 to 3 The structure of the first embodiment is shown.

[0082] exist Figure 7 , the differential mode core 5 is shown as having been inserted into the cavity portion 11 of the base plate 10.

[0083] In this embodiment, the bottom plate 10 includes a side wall 12 , which surrounds the winding 3 and the common mode core 2 along a circumferential direction 26 .

[0084] Here, a height 24 of the side wall 12 in the axial direction 6 is equal to or greater than a height 25 of the winding 3 and / or the differential core 2. Furthermore, the height 24 of the side wall 12 in the circumferential direction 26 is substantially the same.

[0085] Although not shown, the interior space defined by the side walls 12 that houses the common mode core 2 and the windings 3 may be filled with glue and / or potting material. Thus, the side walls 12 provide a housing for the glue and / or potting material (e.g., resin) and serve as a housing for the integrated magnetic component 1.

[0086] Now, refer to Figure 9 and Figure 10 , describing the fourth embodiment of the present invention. Figure 9 FIG. 4 shows an exploded view of an integrated magnetic component 1 according to a fourth embodiment of the present invention, and FIG. Figure 10 FIG. 1 shows an assembled perspective view of an integrated magnetic component 1 according to a fourth embodiment of the present invention.

[0087] from Figure 9 It can be seen that the construction of the common mode inductor 4 is similar to Figures 4 to 6 In the second embodiment shown, the differential mode core 5 is also shown here as being inserted into the cavity portion 11 of the base plate 10 .

[0088] In this example, the base plate 10 does not include the optional dividing wall 20 .

[0089] Furthermore, as in the third embodiment, the height 24 of the single side wall 12 of the base plate 10 is equal to or greater than the height of the common-mode choke 4 (common-mode core 2 and / or winding 3). Therefore, in this embodiment as well, the interior space defined by the side wall 12 and accommodating the common-mode choke 4 and the differential-mode choke can be filled with potting or glue.

[0090] In the aforementioned third and fourth embodiments, the side walls define the outer periphery or outer wall of the integrated magnetic component 1 , such as the outer periphery or outer wall of the bottom plate 10 .

[0091] By means of the aforementioned embodiments, an integrated magnetic component 1 is achieved which provides for easy and efficient manufacturing while also providing reliable insulation / separation distances between its components.

[0092] In addition to the foregoing written instructions, explicit reference to Figures 1 to 10 , the circuit diagram and configuration example of the present invention are shown in detail in the figure.

[0093] Reference Signs List

[0094] 1Integrated magnetic components

[0095] 2 Common mode core

[0096] 3 windings

[0097] 4 Common mode inductor

[0098] 5 differential mold core

[0099] 6 axial

[0100] 7. Longitudinal extension (height) of the differential mode core

[0101] 8 The outer surface of the winding

[0102] 9 radial

[0103] 10 bottom plate

[0104] 11 Cavity part

[0105] 12 sidewalls

[0106] 13 through holes

[0107] 14Terminal

[0108] 15-board section

[0109] 16 Extension plane of the plate section

[0110] 17 cavity wall part

[0111] 18 Height of the cavity

[0112] 19 radial outer surface of the cavity portion

[0113] 20 partition wall

[0114] 21 Winding part

[0115] 22 radial inner surface of the common mode core

[0116] 23 Spacer portion of partition wall

[0117] 24 side wall height

[0118] 25 Winding height

[0119] 26 circumferential

Claims

1. An integrated magnetic component (1), comprising: a differential mode inductor formed by a differential mode core (5) and the winding (3), wherein an axial direction (6) is defined as being parallel to a longitudinal extension (7) of the differential mode core (5); and A bottom plate (10) is provided for fixing the common mode inductor (4) and the differential mode inductor, The bottom plate (10) as a whole comprises a cavity portion (11) for accommodating the differential mode core (5), and at least one side wall (12), wherein the side wall (12) at least partially surrounds the outer surface (8) of the winding (3) and / or the common mode core (2) opposite to the differential mode core (5) along a radial direction (9) perpendicular to the axial direction (6).

2. The integrated magnetic component (1) according to claim 1, wherein The bottom plate (10) further comprises a through hole (13) which guides the coil terminal (14) of the winding (3).

3. The integrated magnetic component (1) according to claim 1, wherein The bottom plate (10) includes a plate portion (15) in the form of a flat plate, and the at least one side wall (12) extends from the plate portion (15).

4. The integrated magnetic component (1) according to claim 3, wherein The at least one side wall (12) projects perpendicularly from a plane (16) defined by the extension of the plate portion (15).

5. The integrated magnetic component (1) according to claim 1, wherein The at least one side wall defines an outer periphery or outer wall of the integrated magnetic component (1).

6. The integrated magnetic component (1) according to claim 5, wherein The at least one side wall (12) completely surrounds the winding (3) and / or the common mode core (2) along a circumferential direction (26) perpendicular to the axial direction (6).

7. The integrated magnetic component (1) according to claim 6, wherein The height (24) of the at least one side wall (12) in the axial direction (6) is equal to or greater than the height (25) of the winding (3) and / or the differential mode core (2).

8. The integrated magnetic component (1) according to claim 6, wherein The inner space defined by the at least one side wall (12) is filled with glue and / or potting material.

9. The integrated magnetic component (1) according to claim 3, wherein The cavity portion (11) accommodating the differential mode core (5) includes one or more cavity wall portions (17), which extend from the plate portion (15) in parallel with the at least one side wall (12) along the axial direction (6).

10. The integrated magnetic component (1) according to claim 1, wherein The height (18) of the cavity portion (11) along the axial direction (6) is equal to or greater than the height (7) of the differential mode core portion (5), and the cavity portion (11) is filled with glue and / or sealing material.

11. The integrated magnetic component (1) according to claim 1, wherein The cavity portion (11) includes a plurality of partition walls (20), wherein the plurality of partition walls (20) respectively extend to the common mode core (2) and separate winding portions (21) of the winding (3) wound on the common mode core (2).

12. The integrated magnetic component (1) according to claim 11, wherein The winding (3) includes four or more separated winding parts (21), and the cavity part (11) includes four or more partition walls (20) for separating and insulating the winding parts (21).

13. The integrated magnetic component (1) according to claim 1, wherein In the plan view along the axial direction (6), the common mode core (2) is annular, and the differential mode core (5) and the cavity portion (11) are cylindrical or rectangular.

14. The integrated magnetic component (1) according to claim 9, wherein The thickness of the one or more cavity wall portions (17) in the radial direction (9) corresponds to a predetermined air gap between the winding (3) and the differential mode core (5).

15. The integrated magnetic component (1) according to claim 1, wherein The base plate (10) is made of plastic or ceramic material.

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