Common mode filter and electronic equipment

Abstract

The utility model relates to a common-mode filter and electronic equipment, the common-mode filter comprises a magnetic core and a group wire, the magnetic core has magnetism, the group wire is wound along the peripheral side of the magnetic core to form a plurality of windings connected in series, the group wire comprises a plurality of wires, the wires at least comprise a first wire, a second wire and a third wire, and the first wire, the second wire and the third wire are connected in series. The first wire, the second wire and the third wire are stacked in a delta shape. According to the common-mode filter, the first wire, the second wire and the third wire are stacked in the shape of the Chinese character'pin ', the space occupied by the group wire in the extension direction of the magnetic core can be reduced, miniaturization of the common-mode filter is facilitated, and when distributed capacitance is generated between the adjacent wires, the positions of the three wires stacked in the shape of the Chinese character'pin' are symmetrical. Balanced distributed capacitance can be generated in the same turn of group wires, common mode-differential mode or differential mode-common mode conversion in the wire is avoided, and the integrity and anti-interference capability of current signals in the wire are enhanced.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic equipment, and in particular to a common mode filter and electronic equipment. Background Art

[0002] In high-speed serial data transmission systems, common-mode filters are required to filter out common-mode noise currents.

[0003] As screen and camera technology develops towards high MIPI transmission rates, the adoption of MIPI C-PHY three-wire differential interface is becoming increasingly common. Compared with two-wire differential design, three-wire differential faces more severe wire asymmetry problems, which may cause differential mode signals to be incorrectly converted to common mode signals, or common mode signals to be incorrectly converted to differential mode signals, causing "common mode-differential mode" or "differential mode-common mode" mode conversion problems, resulting in increased system radiation noise or reduced anti-interference ability. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a common mode filter and an electronic device.

[0005] According to a first aspect of an embodiment of the present disclosure, a common mode filter is provided, comprising a magnetic core and a wire group, wherein the wire group is wound around the circumference of the magnetic core to form a plurality of windings connected in series, the wire group comprises a plurality of conductors, the plurality of conductors comprise at least a first conductor, a second conductor and a third conductor, and the first conductor, the second conductor and the third conductor are stacked in a V-shape.

[0006] In some embodiments, the stacking order of the first conductive wire, the second conductive wire, and the third conductive wire in several windings is consistent.

[0007] In some embodiments, adjacent windings are spaced apart by a preset distance.

[0008] In some embodiments, each of the windings includes one turn of the set of wires.

[0009] In some embodiments, adjacent windings are spaced apart by a preset distance, and the stacking order of the first wire, the second wire, and the third wire in several windings is different.

[0010] In some embodiments, the stacking order of the first wire, the second wire, and the third wire in each of the windings is consistent.

[0011] In some embodiments, the stacking order of the first conductive wire, the second conductive wire, and the third conductive wire of two adjacent windings is different.

[0012] In some embodiments, the first conductive wire, the second conductive wire, and the third conductive wire are wound around the circumference of the magnetic core to form an outer layer and an inner layer located between the outer layer and the magnetic core, and the different stacking sequences refer to different conductive wires forming the outer layer.

[0013] In some embodiments, one of the first conductor, the second conductor, and the third conductor forms the outer layer, and the other two of the first conductor, the second conductor, and the third conductor form the inner layer, and the common mode filter includes three stacking sequences in which the first conductor, the second conductor, and the third conductor respectively form the outer layer, and each stacking sequence has at least one winding corresponding to it.

[0014] In some embodiments, the number of turns of the group of wires of each of the windings is the same.

[0015] In some embodiments, the number of windings having the three stacking orders in the plurality of windings is the same.

[0016] In some embodiments, the plurality of windings include a first winding, a second winding, and a third winding connected in series; in the first winding, the second wire forms the outer layer, and the first wire and the third wire form the inner layer; in the second winding, the third wire forms the outer layer, and the first wire and the second wire form the inner layer; in the third winding, the first wire forms the outer layer, and the second wire and the third wire form the inner layer. In some embodiments, the winding includes a plurality of turn wires, and in the same winding, two wires in the inner layer are arranged in contact, and the two wires in the inner layer are arranged alternately in sequence.

[0017] According to a second aspect of an embodiment of the present disclosure, an electronic device is provided, comprising the common mode filter of the present disclosure.

[0018] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: stacking the first conductor, the second conductor, and the third conductor in a finished shape can reduce the space occupied by the small group of conductors in the extension direction of the magnetic core when the small group of conductors is wound around the magnetic core, thereby reducing the overall length of the common mode filter, which is conducive to the miniaturization of the common mode filter. In addition, when distributed capacitance is generated between adjacent conductors, the three conductors stacked in a finished shape are symmetrically positioned, which will generate balanced distributed capacitance in the same turn group of conductors, avoiding the conversion of "common mode-differential mode" or "differential mode-common mode" in the conductors, and enhancing the integrity and anti-interference ability of the current signal in the conductors.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] Figure 1 The figure is a schematic diagram of a group winding of a common mode filter according to an exemplary embodiment.

[0022] Figure 2 The figure is a schematic diagram of a stacked structure of wire groups according to an exemplary embodiment.

[0023] Figure 3 The figure is a schematic diagram of a stack of wires according to an exemplary embodiment.

[0024] Figure 4 The figure is a schematic diagram of a group winding of a common mode filter according to an exemplary embodiment.

[0025] Figure 5 The figure is a schematic diagram of a stacked structure of a group of wires according to an exemplary embodiment.

[0026] Figure 6 yes Figure 5 The equivalent circuit diagram of the group of lines shown.

[0027] Figure 7 The figure is a schematic diagram showing a structure of a stacked wire group according to an exemplary embodiment.

[0028] Figure 8 yes Figure 7 The equivalent circuit diagram of the group of lines shown.

[0029] Fig. 9 The figure is a schematic diagram of a group winding of a common mode filter according to an exemplary embodiment.

[0030] Fig.10 The figure is a schematic diagram of a group winding of a common mode filter according to an exemplary embodiment.

[0031] Fig.11 The figure is a schematic diagram showing a structure of a stacked wire group according to an exemplary embodiment.

[0032] Fig.12 It is a schematic structural diagram of a common mode filter according to an exemplary embodiment.

[0033] Fig.13 yes Fig.12 A top view of the common mode filter is shown. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0035] The present disclosure provides a common mode filter, which includes a magnetic core and a group wire. The group wire is wound around the circumference of the magnetic core to form a plurality of windings connected in series. The group wire includes a plurality of conductors, which include at least a first conductor, a second conductor and a third conductor. The first conductor, the second conductor and the third conductor are stacked in a V-shape.

[0036] In the embodiment of the present disclosure, the first conductor, the second conductor and the third conductor are stacked in a T-shape, which can reduce the space occupied by the small group of conductors in the extension direction of the magnetic core when they are wound around the magnetic core, thereby reducing the overall length of the common mode filter. In addition, the three conductors are stacked in a T-shape, which can make the three conductors symmetrical, thereby balancing the distributed capacitance generated between the conductors, thereby avoiding the conversion of "common mode-differential mode" or "differential mode-common mode" in the conductors, and enhancing the integrity and anti-interference ability of the current signal in the conductors.

[0037] The common mode filter is a device used to filter out common mode noise current. Of course, those skilled in the art may use it for other purposes, and the present disclosure does not limit this.

[0038] The present disclosure provides a common mode filter, which includes a magnetic core and a group wire. The group wire is wound around the circumference of the magnetic core to form a plurality of windings connected in series. The group wire includes a plurality of conductors, which include at least a first conductor, a second conductor and a third conductor. The first conductor, the second conductor and the third conductor are stacked in a V-shape.

[0039] In the embodiment of the present disclosure, the first conductor, the second conductor and the third conductor are stacked in a finished shape, which can reduce the space occupied by the small group of conductors in the extension direction of the magnetic core when they are wound around the magnetic core, thereby reducing the overall length of the common mode filter, which is conducive to the miniaturization of the common mode filter. In addition, distributed capacitance will be generated between adjacent conductors. The three conductors stacked in the finished shape are symmetrically positioned, which will generate balanced distributed capacitance, avoid the conversion of "common mode-differential mode" or "differential mode-common mode" in the conductors, and enhance the integrity and anti-interference ability of the current signal in the conductors.

[0040] Distributed capacitance refers to a capacitive effect between wires that are in contact or close to each other, which has a negative impact on the stability of the current signal in the wire. When the distributed capacitance between the three wires is balanced, this negative impact will be reduced.

[0041] Figure 1 is a schematic diagram of a group winding of a common mode filter according to an exemplary embodiment. Figure 2 is a schematic diagram of a stacked structure of wire groups according to an exemplary embodiment. Figure 1 , Figure 2 As shown, the first wire A, the second wire B and the third wire C are stacked in a V-shaped pattern, and distributed capacitance C is formed between the first wire A, the second wire B and the third wire C. AB , C AC and C BC , distributed capacitance C AB , C AC and C BC Form a balanced state and reduce the interference of distributed capacitance on the current signal in the wire.

[0042] Figure 3 is a schematic diagram of a stack of wires according to an exemplary embodiment. Figure 3 As shown, the first wire A, the second wire B and the third wire C are in contact with each other, an insulating layer is provided between the wires, and a spacing D1 between the centerline axes of the wires is the width of one wire.

[0043] Figure 4 is a schematic diagram of a group winding arrangement of a common mode filter according to an exemplary embodiment. Figure 4 As shown, the stacking order of the first wire A, the second wire B and the third wire C in the plurality of windings 3 is consistent.

[0044] In the embodiment of the present disclosure, the stacking order of the first wire A, the second wire B and the third wire C of the plurality of windings 3 is set in a consistent manner, which can simplify the winding process of the common mode filter, help improve the winding accuracy of the group wire 2, and further improve the anti-interference ability of the current signal in the wire.

[0045] Figure 5 is a schematic diagram of a stacked structure of a group of wires according to an exemplary embodiment. Figure 6 yes Figure 5 The equivalent circuit diagram of the group of lines shown is as follows: Figure 5 , Figure 6 As shown, if the adjacent turns wound in the group wire 2 are close to each other or in contact with each other, distributed capacitance between the turns will also be generated. Figure 6 Medium A1 , L B1 and L C1 Indicates the first conductor A, the second conductor B, the third conductor C, L in the same turn of group 2 A2 , L B2 and L C2 Indicates the first conductor A, the second conductor B, and the third conductor C in adjacent turns. Figure 6It can be seen that except for L in the same turn A1 , L B1 and L C1 There will be a distributed capacitance C between AB , C AC and C BC Outside, L C1 It will also interact with L in the adjacent turn. A2 Generate distributed capacitance C AC , which breaks the balance of the distributed capacitance among the three wires and has a significant negative impact on the current signal in the wires.

[0046] Figure 7 is a schematic diagram showing a structure of a stacked group of wires according to an exemplary embodiment. Figure 8 yes Figure 7 The equivalent circuit diagram of the group of lines shown is as follows: Figure 7 , Figure 8 As shown, each adjacent winding is spaced apart by a preset distance.

[0047] In the embodiments of the present disclosure, by spacing adjacent windings at a preset distance, it is possible to avoid generation of distributed capacitance between turns of adjacent windings, thereby improving the anti-interference capability of the current signal in the conductor.

[0048] Figure 8 Medium A1 , L B1 and L C1 Indicates the first conductor A, the second conductor B, the third conductor C, L in the same turn of group 2 A2 , L B2 and L C2 Indicates the first conductor A, the second conductor B, and the third conductor C in adjacent turns. Figure 8 It can be seen from the figure that no distributed capacitance will be generated between the first conductor A and the third conductor C of adjacent turns separated by a preset distance.

[0049] In some embodiments, the preset distance may be obtained through experiments or theoretical calculations. When the wires are spaced at the preset distance, no distributed capacitance is generated between the wires or the generated distributed capacitance is so weak that it can be ignored.

[0050] In some embodiments, the predetermined distance between adjacent windings may be related to the diameter of the wire.

[0051] In some embodiments, the diameters of the wires (including the first wire A, the second wire B, and the third wire C) are the same, and the preset distance can be set to 0.5 to 5 times the wire diameter.

[0052] In some embodiments, the preset distance may be set to 1 to 3 times the diameter of the wire. Of course, those skilled in the art may also adjust the preset distance according to actual conditions.

[0053] In some embodiments, each winding includes two turns of wire, that is, a gap having a preset distance is provided every two turns of wire.

[0054] In some embodiments, each winding includes four turns of wire, that is, every four turns of wire are provided with an interval having a length of a preset distance. Of course, those skilled in the art can also select the number of turns of wire included in each winding according to actual needs.

[0055] Fig. 9 is a schematic diagram of a group winding arrangement of a common mode filter according to an exemplary embodiment. Fig. 9 As shown, each winding 3 comprises a turn of wire 2 .

[0056] In the embodiment of the present disclosure, each winding 3 includes a turn of group wire 2, and adjacent windings 3 are spaced apart by a preset distance, that is, each turn of the group wire 2 is spaced apart by a preset distance, completely eliminating the distributed capacitance between the group wires 2 between different turns, thereby improving the anti-interference ability of the current signal in the conductor.

[0057] In some embodiments, adjacent windings 3 are spaced apart by a preset distance, and the stacking order of the first wire A, the second wire B, and the third wire C in some windings 3 is different.

[0058] Since the first wire A, the second wire B and the third wire C are stacked, the winding radius of the wire close to the magnetic core 1 is small, and the winding radius of the wire far from the magnetic core 1 is large, when the first wire A, the second wire B and the third wire C are wound with the same number of turns around the magnetic core 1, the lengths of the three wires are different, affecting the stability of the differential signal.

[0059] In the embodiments of the present disclosure, the stacking order of the first wire A, the second wire B and the third wire C in the plurality of windings 3 is different, so that the distances of the first wire A, the second wire B and the third wire C from the magnetic core 1 during winding can be balanced, and then the total winding length of the three wires can be balanced, so that the differential signal of the common mode filter is more stable.

[0060] Fig.10 is a schematic diagram of a group winding of a common mode filter according to an exemplary embodiment. Fig.11 is a schematic diagram showing a structure of stacking a group of wires 2 according to an exemplary embodiment. Fig.10 , Fig.11 As shown, the stacking order of the first wire A, the second wire B and the third wire C in each winding is consistent.

[0061] The first wire A, the second wire B and the third wire C require a certain transition space when changing the stacking order. When the first wire A, the second wire B and the third wire C transition in the transition space, they will generate unbalanced distributed capacitance, affecting the stability of the current signal in the wire.

[0062] In the embodiment of the present disclosure, the stacking order of the first wire A, the second wire B and the third wire C in the same winding is set to be consistent, which can reduce the demand for transition space and reduce the occurrence of unbalanced inter-turn distributed capacitance.

[0063] In some embodiments, Fig.10 As shown, the stacking order of the first wire A, the second wire B and the third wire C of two adjacent windings is different.

[0064] In the same winding 3, if Figure 5 , Figure 6 As shown, the same distributed capacitance between turns is generated, which makes the distributed capacitance of the first conductor A, the second conductor B and the third conductor C unbalanced.

[0065] In an embodiment of the present disclosure, the stacking order of the first wire A, the second wire B and the third wire C of two adjacent windings is set to be different, so that different distributed capacitances between turns can be generated in adjacent windings, thereby rebalancing the distributed capacitance between the wires and reducing the interference of the distributed capacitance on the current signal in the wires.

[0066] In some embodiments, the first conductive wire, the second conductive wire and the third conductive wire are wound around the circumference of the magnetic core to form an outer layer and an inner layer located between the outer layer and the magnetic core. Different stacking sequences refer to different conductive wires forming the outer layer.

[0067] Because the first, second and third conductors are stacked in a zigzag shape, when the first, second and third conductors form an inner layer and an outer layer, one layer will have two conductors and the other layer will have only one conductor. When the group wires are wound on the circumference of the magnetic core and the group wires of adjacent turns are wound in contact, one of the inner and outer layers with two conductors will contact the conductors of the same layer of the group wires of adjacent turns, resulting in the formation of distributed capacitance between different turns.

[0068] If only two wires are swapped in order within the same layer, the distributed capacitance within the same turn and the distributed capacitance between different turns will not change.

[0069] In the embodiment of the present disclosure, the outer layer has different conductive wires, which means that there is an exchange of conductive wires between the inner layer and the outer layer, and the resulting distributed capacitances between the turns will be different, thereby achieving balanced distributed capacitances between the turns.

[0070] In some embodiments, one of the first conductor, the second conductor, and the third conductor forms an outer layer, and the other two of the first conductor, the second conductor, and the third conductor form an inner layer. The common mode filter includes three stacking sequences in which the first conductor, the second conductor, and the third conductor respectively form outer layers, and each stacking sequence has at least one winding corresponding to it.

[0071] In the embodiments of the present disclosure, each stacking order of the first wire, the second wire and the third wire corresponds to a distributed capacitance between different turns, and the three wires will produce at most three distributed capacitances between different turns. At least one corresponding winding is set for the three stacking orders of the first wire, the second wire and the third wire, so that three distributed capacitances between different turns can be obtained, so that the distributed capacitances between different turns of the wires are balanced.

[0072] In some embodiments, the number of turns of each winding group wire is the same, which is convenient for calculating the amount of each type of inter-turn distributed capacitance during design, manufacturing and use, thereby better achieving capacitance balance.

[0073] In some embodiments, the number of windings having the three stacking sequences in the plurality of windings is the same.

[0074] The number of turns of each winding is the same, and the number of windings corresponding to the three stacking orders is the same, so the total number of distributed capacitances between each type of turns is the same. Through this distributed capacitance balancing method between different turns, the interference to the current signals in the first wire, the second wire and the third wire is reduced.

[0075] In some embodiments, Fig.10 , Fig.11 As shown, the plurality of windings include a first winding 31, a second winding 32 and a third winding 33 connected in series; in the first winding 31, the second wire B forms an outer layer 34, and the first wire A and the third wire C form an inner layer 35; in the second winding 32, the third wire C forms an outer layer 34, and the first wire A and the second wire B form an inner layer 35; in the third winding 33, the first wire A forms an outer layer 34, and the second wire B and the third wire C form an inner layer 35.

[0076] In the embodiment of the present disclosure, the first wire A, the second wire B and the third wire C are stacked into three stacking modes in which the first wire A, the second wire B and the third wire C respectively form the outer layer 34, forming three distributed capacitances, so that the distributed capacitances between different turns in the first wire A, the second wire B and the third wire C are balanced. At the same time, one winding is set for each stacking mode, and multiple windings are not set for each stacking mode, which avoids the first wire A, the second wire B and the third wire C in the winding from occupying too much space and generating a large amount of irregular distributed capacitance in the process of changing the stacking mode between adjacent windings, thereby minimizing the interference to the common mode filter.

[0077] For example, Fig.10 , Fig.11 As shown, the wire group 2 is wound around the magnetic core 1 to form a first winding 31, a second winding 32 and a third winding 33 connected in series in sequence, and an inter-turn capacitance C is formed in the first winding 31. CA , forming an inter-turn capacitance C in the second winding 32 BA , forming an inter-turn capacitance C in the third winding 33 BC , a balance is formed between the three distributed capacitances.

[0078] In some embodiments, Fig.10 As shown, each winding may include four turns of wire 2. Alternatively, Fig.11 As shown, each winding may include two turns of the wire group 2. Of course, these are just two embodiments, and the present disclosure does not limit this. Those skilled in the art may select the number of turns of the wire group 2 included in each winding as needed.

[0079] In some embodiments, the winding includes a plurality of turn wires, and in the same winding, two inner conductors are arranged in contact with each other, and the two inner conductors are arranged alternately in sequence.

[0080] In the same winding, the type of distributed capacitance between different turns is not only related to the stacking order of the wires, but also to the wires that are in contact between the wires of different turn groups. For example, the inner layer 35 is formed by the first wire A and the second wire B. If the arrangement of the inner layer 35 of the first turn group wire 2 is the first wire A and the second wire B, and the arrangement of the inner layer 35 of the second turn group wire 2 is the first wire A and the second wire B, then the distributed capacitance between different turns is C BA If the arrangement of the inner layer 35 of the first turn group wire 2 is the first wire A and the second wire B, and the arrangement of the inner layer 35 of the second turn group wire 2 is the second wire B and the first wire A, then the distributed capacitance between the different turns is C BB ; This causes the distributed capacitance between different turns in the same winding to become chaotic, affecting the stability of the current signal in the conductor.

[0081] In the embodiment of the present disclosure, the two wires of the inner layer 35 are alternated in sequence to keep the capacitance between the turns formed in the same winding consistent, which is beneficial to form a balanced distributed capacitance between the turns under the cooperation of multiple windings.

[0082] It should be noted that the principles for the distributed capacitance between different turns and the distributed capacitance within the same turn are the same, but in the embodiment of the present disclosure, the capacitance between the same turns has been balanced through the herringbone stacking method, and only the distributed capacitance between different turns needs to be balanced.

[0083] It should also be noted that for distributed capacitance, as long as the two wires forming the distributed capacitance are the same, the same distributed capacitance will be formed, so the distributed capacitance C BA And distributed capacitance C AB The only difference is the way of expression and recording, which represents the same distributed capacitance. BC And distributed capacitance C CB It also represents the same distributed capacitance, distributed capacitance C BC And distributed capacitance C CB It also represents the same distributed capacitance.

[0084] Fig.12 is a schematic structural diagram of a common mode filter according to an exemplary embodiment. Fig.13 yes Fig.12 The top view of the common mode filter is shown in FIG. Fig.12 , Fig.13 As shown, the common mode filter includes a magnetic core 1 and a first electrode seat 4 and a second electrode seat 5 arranged at both ends of the magnetic core 1. The first electrode seat 4 includes a first electrode 41, a second electrode 42 and a third electrode 43 arranged in sequence, and the second electrode seat 5 includes a fourth electrode 51, a fifth electrode 52 and a sixth electrode 53 arranged in sequence. The first electrode 41 is arranged opposite to the fourth electrode 51, the second electrode 42 is arranged opposite to the fifth electrode 52, and the third electrode 43 is arranged opposite to the sixth electrode 53. One end of the first wire A wound around the magnetic core 1 is connected to the first electrode 41, and the other end is connected to the fourth electrode 51; one end of the second wire B wound around the magnetic core 1 is connected to the second electrode 42, and the other end is connected to the fifth electrode 52; one end of the third wire C wound around the magnetic core 1 is connected to the third electrode 43, and the other end is connected to the sixth electrode 53.

[0085] The first wire A, the second wire B and the third wire C are used to transmit a set of differential signals, and the electrodes connected to the first wire A, the second wire B and the third wire C are used to introduce and export the differential signals to the wires.

[0086] In the embodiments of the present disclosure, by connecting the two ends of the same wire to opposite electrodes, the lengths of the first wire A, the second wire B, and the third wire C are made as consistent as possible, thereby avoiding conversion between "common mode-differential mode" or "differential mode-common mode" due to inconsistent lengths of the first wire A, the second wire B, and the third wire C.

[0087] In some embodiments, the first electrode 41, the second electrode 42, the third electrode 43, the fourth electrode 51, the fifth electrode 52 and the sixth electrode 53 are arranged as L-shaped sheet structures, one end of which is fixed to the side of the first electrode seat 4 and the second electrode seat 5 respectively, and the other end extends toward each other from the top of the first electrode seat 4 and the second electrode seat 5 respectively.

[0088] In some embodiments, the common mode filter further includes a magnetic cover plate 6 , which is magnetic and connected to the bottom of the first electrode holder 4 and the second electrode holder 5 .

[0089] In some embodiments, the magnetic cover plate 6 of the common mode filter can be connected to the bottom of the first electrode holder 4 and the second electrode holder 5 in a variety of ways, such as by using an adhesive to fix. Of course, those skilled in the art can also fix the magnetic cover plate 6 to the first electrode holder 4 and the second electrode holder 5 in other ways, which is not limited in the present disclosure.

[0090] In some embodiments, the common mode filter includes more than three conductors for transmitting more than three current signals. These conductors can be stacked and arranged with reference to the embodiments of the present disclosure to balance the distributed resistance in the same turn and the distributed resistance in different turns.

[0091] The present disclosure also provides an electronic device, comprising the common mode filter of the present disclosure.

[0092] In the embodiments of the present disclosure, by applying the common-mode filter of the present disclosure, the electronic device of the present disclosure can obtain better anti-interference capability and improve signal integrity when transmitting data through the common-mode filter.

[0093] In some embodiments, the electronic device may include a mobile terminal, such as a mobile phone.

[0094] For example, the electronic device is a mobile phone, and the common-mode filter disclosed in the present invention is used for data transmission of the camera and screen of the mobile phone, which can effectively avoid the mode conversion problem of "common mode-differential mode" or "differential mode-common mode" and improve the anti-interference ability of mobile phone data transmission.

[0095] In some embodiments, the electronic device uses a MIPI C-PHY three-wire differential interface in conjunction with a common mode filter.

[0096] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0097] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0098] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0099] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0100] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0101] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0102] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A common mode filter, characterized in that: include: The core has magnetic properties; A wire group is wound along the circumference of the magnetic core to form a plurality of series-connected windings, the wire group includes a plurality of conductors, the plurality of conductors include at least a first conductor, a second conductor and a third conductor, the first conductor, the second conductor and the third conductor are stacked in a V-shape.

2. The common mode filter according to claim 1, characterized in that: The stacking order of the first conductive wire, the second conductive wire and the third conductive wire in a plurality of the windings is consistent.

3. The common mode filter according to claim 2, characterized in that: Each adjacent winding is spaced apart by a preset distance.

4. The common mode filter according to claim 3, characterized in that: Each of the windings includes one turn of the set of wires.

5. The common mode filter according to claim 1, characterized in that: Adjacent windings are spaced apart by a preset distance, and the stacking order of the first wire, the second wire and the third wire in some windings is different.

6. The common mode filter according to claim 5, characterized in that: The stacking order of the first conductive wire, the second conductive wire and the third conductive wire in each winding is consistent.

7. The common mode filter according to claim 5, characterized in that: The stacking order of the first conductive wire, the second conductive wire and the third conductive wire of two adjacent windings is different.

8. The common mode filter according to any one of claims 5 to 7, characterized in that: The first conductive wire, the second conductive wire and the third conductive wire are wound around the magnetic core to form an outer layer and an inner layer between the outer layer and the magnetic core. The different stacking sequences refer to different conductive wires forming the outer layer.

9. The common mode filter according to claim 8, characterized in that: One of the first conductor, the second conductor and the third conductor forms the outer layer, and the other two of the first conductor, the second conductor and the third conductor form the inner layer. The common mode filter includes three stacking sequences in which the first conductor, the second conductor and the third conductor respectively form the outer layer, and each stacking sequence has at least one winding corresponding to it.

10. The common mode filter according to claim 9, characterized in that: The number of winding turns of the group of wires of each winding is the same.

11. The common mode filter according to claim 10, characterized in that: The number of windings having the three stacking sequences is the same among the plurality of windings.

12. The common mode filter according to claim 11, characterized in that: The plurality of windings include a first winding, a second winding and a third winding connected in series; In the first winding, the second conductor forms the outer layer, and the first conductor and the third conductor form the inner layer; In the second winding, the third wire forms the outer layer, and the first wire and the second wire form the inner layer; In the third winding, the first conductive wire forms the outer layer, and the second conductive wire and the third conductive wire form the inner layer.

13. The common mode filter according to any one of claims 9 to 12, characterized in that: The winding comprises a plurality of turn wires. In the same winding, two wires located in the inner layer are arranged in contact with each other, and the two wires in the inner layer are arranged alternately in sequence.

14. An electronic device, characterized in that: The common mode filter comprises any one of claims 1-13.

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