CN113130170B - Inductance device - Google Patents

Abstract

An inductance device comprises a first coil, a second coil, at least one first connecting piece, at least one second connecting piece and a first central tap end. The first coil includes a plurality of first sub-coils. The second coil comprises a plurality of second secondary coils. The plurality of first secondary coils are interactively arranged with the plurality of second secondary coils. At least one first connecting piece is coupled with a first secondary coil arranged on the outer side and a first secondary coil arranged on the inner side in the plurality of first secondary coils. The at least one second connecting piece is coupled with a second secondary coil arranged on the outer side and a second secondary coil arranged on the inner side in the plurality of second secondary coils. The first central tap end is coupled to a first secondary coil arranged outside the plurality of first secondary coils.

Description

Inductance device

Technical Field

The present disclosure relates to electronic devices, and more particularly to an inductive device.

Background

The existing inductors of various forms have advantages and disadvantages, such as a spiral inductor (Q value) with high quality factor and large mutual inductance value (mutual inductance). It is difficult for a spiral inductor (twin inductor) to be designed into a symmetrical structure, and the application frequency band of the spiral inductor is narrow. Therefore, the application range of the inductor is limited.

Disclosure of Invention

In order to solve the above-mentioned problems, an embodiment of the disclosure relates to an inductance device, which includes a first coil, a second coil, at least one first connecting member, at least one second connecting member, and a first central tap. The first coil includes a plurality of first sub-coils. The second coil comprises a plurality of second secondary coils. The first secondary coil and the second secondary coil are alternately arranged. At least one first connecting piece is coupled with a first secondary coil arranged on the outer side and a first secondary coil arranged on the inner side in the first secondary coil. At least one second connecting piece is coupled with a second secondary coil arranged on the outer side and a second secondary coil arranged on the inner side in the second secondary coils. The first central tap end is coupled with a first secondary coil arranged outside the first secondary coil.

Therefore, according to the technical disclosure, the inductance device adopting the architecture of the embodiments of the present disclosure has preferable structural symmetry and quality factor (Q). In addition, based on the structural design of the inductance device in the embodiment of the disclosure, the central tap end can be directly pulled out from the outer side of the inductance device without adopting a jumper wire or other manners occupying other layered structures, so that the structural design is more convenient, and the structural configuration manner of the central tap end enables the central tap end to be designed by adopting materials with higher current tolerance and can bear larger current.

Drawings

The foregoing and other objects, features, advantages and embodiments of the present disclosure will be apparent from the following description of the drawings in which:

fig. 1 is a schematic diagram of an inductance device according to an embodiment of the disclosure.

Fig. 2 is a schematic diagram illustrating an inductive device according to an embodiment of the present disclosure.

Fig. 3 is a schematic diagram illustrating experimental data of an inductance device according to an embodiment of the disclosure.

Fig. 4 is a schematic diagram illustrating experimental data of an inductance device according to an embodiment of the disclosure.

Various features and elements are not drawn to scale in accordance with conventional practice in the drawings in order to best present the specific features and elements relevant to the present disclosure. Furthermore, like elements/components are referred to by the same or similar reference numerals among the different figures.

Symbol description

100. 100A … inductance device

111-116, 1111, 1112, 111A-116A, 1111A, 1112A … first sub-coil

121-126, 1211, 1212, 121A-127A, 1211A, 1212A … second secondary winding

131-134, 131A-1341A … first connecting piece

141-144, 141A-144A … second connecting piece

151. 151A … first central tap

161. 162, 161A, 162A … third connector

171. 171A … fourth connector

181. 181A … second central tap

191. 191A … first input/output terminal

192. 192A … second input/output terminal

211A … third coil

221a … fourth coil

231A

C … center point

C1-C4

L1, L2

P1 to P8 … points

Detailed Description

Fig. 1 is a schematic diagram illustrating an inductive device 100 according to an embodiment of the disclosure. As shown, the inductance device 100 includes a first coil, a second coil, at least one first connection element, at least one second connection element, and a first central tap 151. The first coil includes a plurality of first sub-coils 111 to 116. The second coil includes a plurality of second sub-coils 121 to 126. The at least one first connector includes at least one of the first connectors 131-134. The at least one second connector comprises at least one of the second connectors 141-144.

In terms of structural arrangement, the first secondary coils 111 to 116 and the second secondary coils 121 to 126 are alternately arranged. In one embodiment, every second secondary coil is disposed in interaction with every first secondary coil. For example, the inductance device 100 may be configured as follows: first sub-coils 111, 112; second secondary coils 121, 122; first sub-coils 113, 114; second secondary coils 123, 124; first sub-coils 115, 116; and second secondary coils 125, 126. However, the disclosure is not limited to the above embodiments, and the first secondary coils 111-116 and the second secondary coils 121-126 may be alternatively arranged for each turn according to actual needs, or alternatively arranged for one turn of the first secondary coil and multiple turns of the second secondary coil, or alternatively arranged for multiple turns of the first secondary coil and one turn of the second secondary coil, or alternatively arranged for other turns, depending on the actual needs.

Referring to fig. 1, at least one first connecting member is coupled to the first secondary coil disposed outside and the first secondary coil disposed inside of the first secondary coils 111-116. For example, the first connecting member 131 couples the first secondary coil 113 disposed outside and the first secondary coil 115 disposed inside, and the first connecting member 132 couples the first secondary coil 114 disposed outside and the first secondary coil 116 disposed inside. In an embodiment, the first connection member 133 is coupled to the first secondary coil 111 disposed outside and the first secondary coil 113 disposed inside, and the first connection member 134 is coupled to the first secondary coil 112 disposed outside and the first secondary coil 114 disposed inside.

In addition, at least one second connecting piece is coupled to the second secondary coil arranged on the outer side and the second secondary coil arranged on the inner side in the second secondary coils 121-126. For example, the second connecting member 141 couples the second secondary coil 121 disposed outside and the second secondary coil 123 disposed inside, and the second connecting member 142 couples the second secondary coil 122 disposed outside and the second secondary coil 124 disposed inside. In one embodiment, the second connection member 143 couples the second secondary coil 123 disposed outside and the second secondary coil 125 disposed inside, and the second connection member 144 couples the second secondary coil 124 disposed outside and the second secondary coil 126 disposed inside.

In one embodiment, the first central tap 151 is coupled to an outer first sub-coil of the first sub-coils 111 to 116. For example, among the first sub-coils 111 to 116, the first sub-coil 112 is an outer portion of the overall structure of the inductance device 100, and the first central tap 151 may be configured to be coupled to the outer first sub-coil 112. In another embodiment, referring to the upper side of fig. 1, the inductor device 100 further includes a first input/output end 191, wherein the first input/output end 191 is disposed in the first secondary winding 111 located at the outermost position among the first secondary windings 111-116 and is disposed on the upper side of the inductor device 100. Based on the above configuration, the first central tap 151 is coupled to the outer first secondary winding 112 and directly pulled to the outermost side of the inductor device 100 through the first input/output end 191, and is not required to be pulled out in a manner of occupying other layered structures such as jumpers, so that the structural design is more convenient, and the first central tap 151 is directly pulled out through the first input/output end 191, so that the first central tap is in the same material structure as the first secondary winding 112 and can bear larger current. Such as the first center tap 151, may be designed with a thicker metal layer, thereby withstanding greater currents. For example, the first central tap 151 and the first secondary winding 112 may be disposed on a circuit redistribution layer (Redistribution Layer, RDL) and a thick metal layer is used as the RDL material, so that the first central tap 151 can withstand a higher current and can be suitable for high-current applications.

Referring to fig. 1, the first sub-coils 111 to 116 and the second sub-coils 121 to 126 are disposed on the same layer. In one embodiment, the at least one first connector and the at least one second connector are disposed on the same layer. However, the disclosure is not limited to the above embodiments, and the at least one first connecting member and the at least one second connecting member may be disposed on different layers according to practical requirements. In another embodiment, at least one first connecting member and the first secondary coils 111-116 are disposed on different layers, and at least one second connecting member and the second secondary coils 121-126 are disposed on different layers. For example, the first connecting members 131 to 134 may be disposed at the upper layers of the first sub-coils 111 to 116 or at the lower layers of the first sub-coils 111 to 116. In addition, the second connecting members 141 to 144 may be disposed at the upper layer of the second secondary coils 121 to 126 or at the lower layer of the second secondary coils 121 to 126, depending on the actual requirements.

In one embodiment, the first coil further comprises first sub-coils 1111, 1112, the first sub-coil 1111 being coupled to the first sub-coils 113, 115, and the first sub-coil 1112 being coupled to the second sub-coils 114, 116. In addition, the second coil further comprises second secondary coils 1211, 1212, the second secondary coil 1211 being coupled to the second secondary coils 121, 123, and the second secondary coil 1212 being coupled to the second secondary coils 122, 124. In another embodiment, at least one of the first secondary coils 111-116 is interleaved with at least one of the second secondary coils 121-126, 1211, 1212 of the second coil by at least one first connection. For example, the first secondary coil 113 is disposed alternately with the second secondary coils 1211 and 1212 through the first connection member 131, and is coupled to the first secondary coil 115. In addition, the first secondary coil 114 is interleaved with the second secondary coils 1211, 1212 by the connection 132 and coupled to the first secondary coil 116. In another embodiment, at least one of the second secondary coils 121-126 is interleaved with at least one of the first secondary coils 111-116, 1111, 1112 of the first coil by at least one second connection. For example, the second secondary coil 121 is interlaced with the first secondary coils 1111, 1112 through the connection member 141 and coupled to the second secondary coil 123. In addition, the second secondary coil 122 is interleaved with the first secondary coils 1111, 1112 via the connection member 142 and coupled to the second secondary coil 124.

In another embodiment, at least one first connection spans at least one of the first secondary coils 111-116, 1111, 1112 of the first coil and at least one of the second secondary coils 121-126, 1211, 1212 of the second coil to couple the first secondary coil disposed outside and the first secondary coil disposed inside of the first secondary coils. For example, the first connection member 131 spans the first secondary coils 1111, 1112 and the second secondary coils 1211, 1212 to couple the first secondary coil 113 disposed on the outer side and the first secondary coil 115 disposed on the inner side. The first connection 132 spans the first and second secondary windings 1111, 1112, 1211, 1212 to couple the first secondary winding 114 disposed on the outer side and the first secondary winding 116 disposed on the inner side. In another embodiment, at least one second connector spans at least one of the first secondary coils 111-116, 1111, 1112 of the first coil and at least one of the second secondary coils 121-126, 1211, 1212 of the second coil to couple the second secondary coil disposed outside and the second secondary coil disposed inside of the second secondary coils. For example, the second connection member 141 spans the first secondary coils 1111, 1112 and the second secondary coils 1211, 1212 to couple the second secondary coil 121 disposed on the outer side and the second secondary coil 123 disposed on the inner side. The second connection 142 spans the first and second secondary windings 1111, 1112, 1211, 1212 to couple the second secondary winding 122 disposed on the outer side with the second secondary winding 124 disposed on the inner side.

In one embodiment, the inductance device 100 further includes at least one third connection member, and the at least one third connection member includes at least one of the third connection members 161, 162. One of the first sub-coils 111-116 is wound to the inside toward the center of the inductor device 100 and is coupled to the other of the first sub-coils 111-116 through at least one third connection. For example, the first secondary winding 116 is wound to the lower side in the counterclockwise direction and is wound to the inner side P2 at the point P1 toward the center point C of the inductor device 100, and the point P2 of the first secondary winding 116 is coupled to the first secondary winding 115 through the connection 161. In addition, the first sub-coil 115 is wound to the lower side in the counterclockwise direction and is wound to the inner side P4 point in the direction of the center point C of the inductance device 100 at the P3 point, and the P4 point of the first sub-coil 115 is coupled to the first sub-coil 116 through the connection member 162.

In another embodiment, the inductance device 100 further includes a fourth connection 171. One of the second secondary windings 121 to 126 is wound to the inside toward the center point of the inductance device 100 and is coupled to the same one of the second secondary windings 121 to 126 through a fourth connection 171. For example, the second secondary winding 122 is wound to the lower side in the clockwise direction and is wound to the inner side P6 at the P5 point toward the center point C of the inductor device 100, and the P6 point of the second secondary winding 122 is coupled back to the second secondary winding 122 through the fourth connection 171.

In one embodiment, at least one third connecting member and one fourth connecting member 171 are disposed on the same side of the inductance device 100. For example, the third connecting members 161, 162 and the fourth connecting member 171 are disposed on the lower side of the inductance device 100. In another embodiment, the third connecting members 161, 162 and the fourth connecting member 171 are disposed on the same layer. However, the disclosure is not limited to the above embodiments, and the third connecting members 161, 162 and the fourth connecting member 171 may be disposed on different layers according to practical requirements. For example, the third connecting members 161 and 162 may be disposed on the upper layers of the sub-coils 111-116 and 121-126, and the fourth connecting member 171 may be disposed on the lower layers of the sub-coils 111-116 and 121-126, or the third connecting members 161 and 162 may be disposed on the lower layers of the sub-coils 111-116 and 121-126, and the fourth connecting member 171 may be disposed on the upper layers of the sub-coils 111-116 and 121-126, depending on the actual requirements.

Referring to fig. 1, the inductance device 100 further includes a second central tap 181, and the second central tap 181 is coupled to the second secondary windings 121 to 126 located outside. For example, the second center tap 181 is coupled to the P6 point of the second secondary coil 122 disposed outside. In one embodiment, the first central tap 151 is disposed on a first side (e.g., upper side) of the inductance device 100, and the second central tap 181 is disposed on a second side (e.g., lower side) of the inductance device 100. In another embodiment, the second central tap 181 is disposed in a different layer from the secondary coils 111-116, 121-126 and the fourth connector 171. In some embodiments, the second central tap 181 may be disposed above the secondary coils 111-116, 121-126 and the fourth connecting member 171, or below the secondary coils 111-116, 121-126 and the fourth connecting member 171, or between the secondary coils 111-116, 121-126 and the fourth connecting member 171, depending on the actual requirements. In other embodiments, the second central tap 181 may also be determined according to actual requirements to be disposed in the inductance device 100, in other words, in some embodiments, the inductance device 100 may not include the second central tap 181.

In one embodiment, the inductive device 100 further includes a second input/output 192. The second input/output terminal 192 is disposed in the outermost second secondary winding 121 of the second secondary windings 121 to 126, and is disposed on the second side (lower side) of the inductance device 100.

In another embodiment, the first side (e.g., upper side) and the second side (e.g., lower side) of the inductor device 100 are disposed in a first direction (e.g., vertical direction), and the third side (e.g., left side) and the fourth side (e.g., right side) of the inductor device 100 are disposed in a second direction (e.g., horizontal direction) perpendicular to the first direction. Referring to fig. 1, in the structural configuration, the line widths of the first sub-coils 111 to 116 disposed on the first side (e.g., upper side) and the second side (e.g., lower side) are larger than the line widths of the first sub-coils disposed on the third side (e.g., left side) and the fourth side (e.g., right side). In addition, the line widths of the second secondary coils 121 to 126 disposed at the first side (e.g., upper side) and the second side (e.g., lower side) are larger than those of the second secondary coils disposed at the third side (e.g., left side) and the fourth side (e.g., right side). The present disclosure adopts the structural configuration of fig. 1, the staggered structures (such as the overall staggered structure … in which the first secondary coil 113 and the second secondary coil 1211 and 1212 are staggered through the first connecting element 131) are disposed on the first side (e.g., the upper side) and the second side (e.g., the lower side) of the inductor device 100, so that the coils on the third side (e.g., the left side) and the fourth side (e.g., the right side) of the inductor device 100 can use the minimum line width and the line distance, so that the inductor device 100 can achieve the design requirement of the minimum area and have high mutual inductance value.

Fig. 2 is a schematic diagram illustrating an inductive device 100A according to an embodiment of the disclosure. In comparison with the inductor device 100 shown in fig. 1, the inductor device 100A further includes a second coil 127A, a third coil 211A, a fourth coil 221A, and a fifth coil 231A.

As shown, the second secondary coil 127A is disposed innermost in the second secondary coils 121A to 127A. The third coil 211A is coupled to the second secondary coil 125A disposed inside at point P7, and is wound counterclockwise one turn and then coupled to the second secondary coil 127A disposed inside at point P8. In an embodiment, the third coil 211A is disposed on the upper layer of the second secondary coil 127A or on the lower layer of the second secondary coil 127A, depending on the actual requirement.

The third coil 211A of the inductor device 100A can be used to adjust the inductance values of the first coil and the second coil such that the inductance value of the first coil is approximately one-to-one ratio to the inductance value of the second coil. Fig. 3 is a schematic diagram illustrating experimental data of an inductance device 100A according to an embodiment of the disclosure. As shown in the figures, the experimental curves L1 and L2 are curves of the inductance values of the first coil and the second coil at different frequencies, respectively, and as can be seen from the figures, the inductance value of the first coil and the inductance value of the second coil can be adjusted to be about one-to-one ratio by adding the third coil 211A to the inductance device 100A.

Referring to fig. 2, the fourth coil 221A is coupled to the first sub-coils 111A to 116A disposed at the inner side. For example, the fourth coil 221A is coupled to the first secondary coil 113A disposed inside. In addition, the fourth coil 221A includes a part of its structure on the left and right sides of the inductance device 100A, and is symmetrical with respect to the center point C of the inductance device 100A. In an embodiment, the fourth coil 221A is disposed on the upper layer of the first secondary coil 113A or on the lower layer of the first secondary coil 113A, depending on the actual requirement.

The fifth coil 231A is coupled to the outermost first sub-coil among the first sub-coils 111A to 116A. For example, the fifth coil 231A is coupled to the first secondary coil 111A disposed at the outermost side. In addition, the fifth coil 231A includes a part of its structure on the left and right sides of the inductance device 100A, and is symmetrical with respect to the center point C of the inductance device 100A. In an embodiment, the fifth coil 231A is disposed on the upper layer of the first secondary coil 111A or on the lower layer of the first secondary coil 111A, depending on the actual requirement.

It should be noted that, in the elements of the inductance device 100A of fig. 2, the reference numerals are similar to those of the inductance device 100 of fig. 1 (such as the reference numerals of the first secondary winding 111 and the first secondary winding 111A), and have the same structural configuration, so that the description of the present disclosure is simplified, and detailed descriptions thereof are omitted in the related description of fig. 2.

Fig. 4 is a schematic diagram illustrating experimental data of an inductance device 100 shown in fig. 1 according to an embodiment of the disclosure. As shown, the quality factor (Q) experimental curves of the two coils of the inductance device without the structural configuration of the present disclosure are C1 and C2. In addition, the quality factor experimental curves of the two coils of the inductance device configured by adopting the structure disclosed by the disclosure are C3 and C4. In contrast, the average value of the quality factors of the two coils of the inductor device 100 configured by the structure of the present disclosure is about 6% -10% higher, so that the inductor device 100 configured by the structure of the present disclosure does have a preferable quality factor.

As can be seen from the above-described embodiments of the present disclosure, the application of the present disclosure has the following advantages. The inductor device adopting the framework of the embodiment of the disclosure has preferable structural symmetry and quality factor (Q). In addition, based on the structural design of the inductance device in the embodiment of the disclosure, the central tap end can be directly pulled out from the outer side of the inductance device without adopting a jumper wire or other manners occupying other layered structures, so that the structural design is more convenient, and the structural configuration manner of the central tap end enables the central tap end to be designed by adopting materials with higher current tolerance and can bear larger current.

While the foregoing is directed to embodiments of the present disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims (10)

1. An inductive device, comprising:

a first coil including a plurality of first sub-coils;

the second coil comprises a plurality of second secondary coils, wherein the plurality of first secondary coils and the plurality of second secondary coils are arranged in a staggered manner;

at least one first connecting piece, which is coupled with a first secondary coil arranged outside a second secondary coil and another first secondary coil arranged inside the second secondary coil in the plurality of first secondary coils;

at least one second connecting piece, which is coupled with a second secondary coil arranged outside the first secondary coil and another second secondary coil arranged inside the first secondary coil in the plurality of second secondary coils;

two first input/output ends, which are arranged on the first secondary coil positioned at the outermost side in the plurality of first secondary coils; and

the first central tap end is coupled to a first secondary coil arranged in the outermost first secondary coil in the outer first secondary coils, and is pulled to the outermost side of the inductance device through the gap between the two first input and output ends.

2. The inductive device of claim 1, wherein the plurality of first sub-coils and the plurality of second sub-coils are disposed on a same layer, wherein the at least one first connection and the at least one second connection are disposed on a same layer, wherein the at least one first connection and the plurality of first sub-coils are disposed on different layers, and the at least one second connection and the plurality of second sub-coils are disposed on different layers.

3. The inductive device of claim 1, wherein at least one of the plurality of first secondary coils is interleaved with at least one of the plurality of second secondary coils via the at least one first connection, wherein at least one of the plurality of second secondary coils is interleaved with at least one of the plurality of first secondary coils via the at least one second connection.

4. The inductive device of claim 1, wherein the at least one first connection spans at least one of the plurality of first secondary windings and at least one of the plurality of second secondary windings to couple the first one of the plurality of first secondary windings disposed outside with the first one of the plurality of first secondary windings disposed inside, wherein the at least one second connection spans one of the plurality of first secondary windings and one of the plurality of second secondary windings to couple the second one of the plurality of second secondary windings disposed outside with the second one of the plurality of second secondary windings disposed inside.

5. The inductive device of claim 1, further comprising:

at least one third connecting piece, wherein one of the first sub-coils is wound to the inner side towards the center point of the inductance device and is coupled with the other of the first sub-coils through the at least one third connecting piece; and

a fourth connecting member, wherein one of the plurality of second secondary coils is wound to the inner side toward the center point of the inductance device and is coupled to the one of the plurality of second secondary coils through the fourth connecting member;

the at least one third connecting piece and the fourth connecting piece are arranged on the same side relative to the center point of the inductance device.

6. The inductive device of claim 1, further comprising:

a second central tap end coupled to the second secondary coil disposed outside of the plurality of second secondary coils;

the first center tap end is arranged on a first side of the inductance device, and the second center tap end is arranged on a second side of the inductance device opposite to the first side.

7. The inductive device of claim 6, further comprising:

the first input/output end is arranged on the first side of the inductance device; and

the second input and output end is arranged on the second secondary coil positioned at the outermost side of the plurality of second secondary coils and is arranged on the second side of the inductance device.

8. The inductive device of claim 7, wherein the first side and the second side of the inductive device are disposed in a first direction, and a third side and a fourth side of the inductive device are disposed in a second direction perpendicular to the first direction, wherein a linewidth of a first secondary coil of the plurality of first secondary coils disposed on the first side and the second side is greater than a linewidth of a first secondary coil of the plurality of first secondary coils disposed on the third side and the fourth side, and wherein a linewidth of a second secondary coil of the plurality of second secondary coils disposed on the first side and the second side is greater than a linewidth of a second secondary coil of the plurality of second secondary coils disposed on the third side and the fourth side.

9. The inductive device of claim 1, further comprising:

and the third coil is coupled with two second secondary coils arranged on the inner side in the plurality of second secondary coils.

10. The inductive device of claim 9, further comprising:

a fourth coil coupled to the first sub-coils disposed inside the plurality of first sub-coils; and

and the fifth coil is coupled with the first secondary coil arranged at the outermost side in the plurality of first secondary coils.