CN113130170B - Inductive 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

Inductive device

technical field

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

Background technique

Various existing inductors have their advantages and disadvantages. For example, a spiral inductor has a high Q value and a large mutual inductance. For the twin inductor, it is difficult to design it as a symmetrical structure, and the application frequency band of the twin inductor is relatively narrow. Therefore, the application ranges of the above-mentioned inductors are limited.

Contents of the invention

To solve the above problems, a technical embodiment of the present disclosure relates to an inductance device, which includes a first coil, a second coil, at least one first connecting element, at least one second connecting element, and a first central tap end. The first coil includes a plurality of first coils. The second coil includes a plurality of second coils. The first coil is arranged alternately with the second coil. At least one first connecting piece is coupled to the primary coil disposed on the outer side and the first coil disposed on the inner side among the primary coils. At least one second connecting piece is coupled to the second coil disposed on the outer side and the second coil disposed on the inner side among the second coils. The first central tap end is coupled to the primary coil disposed outside of the primary coils.

Therefore, according to the technical content of the present disclosure, the inductor device adopting the framework 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 present disclosure, the central tap end can be pulled out directly from the outside of the inductance device without using jumpers or other methods that occupy other layered structures. Therefore, it is more convenient for structural design, and The center tap terminal is configured in such a way that it can be designed with more current tolerant materials to handle higher currents.

Description of drawings

In order to make the above and other objects, features, advantages and embodiments of the present disclosure more comprehensible, the accompanying drawings are described as follows:

FIG. 1 is a schematic diagram illustrating an inductor device according to an embodiment of the present disclosure.

FIG. 2 is a schematic diagram illustrating an inductor device according to an embodiment of the disclosure.

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

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

In accordance with common practice, the various features and elements in the drawings have not been drawn to scale, but rather have been drawn in order to best present the specific features and elements relevant to the present disclosure. Furthermore, the same or similar reference numerals refer to similar elements/components in different drawings.

Symbol Description

100, 100A...inductance device

111～116, 1111, 1112, 111A～116A, 1111A, 1112A…the first coil

121～126, 1211, 1212, 121A～127A, 1211A, 1212A…Secondary coil

131~134, 131A~1341A...the first connector

141~144, 141A~144A...the second connector

151, 151A...the first central tap terminal

161, 162, 161A, 162A...the third connecting piece

171, 171A...the fourth connector

181, 181A...Second center tap end

191, 191A...the first input and output terminals

192, 192A...the second input and output terminals

211A...Third coil

221A...fourth coil

231A...fifth coil

C...center point

C1～C4...experimental curve

L1, L2...Experimental curve

P1～P8...Points

Detailed ways

FIG. 1 is a schematic diagram illustrating an inductance device 100 according to an embodiment of the disclosure. As shown in the figure, the inductance device 100 includes a first coil, a second coil, at least one first connecting element, at least one second connecting element, and a first central tap end 151 . The first coil includes a plurality of primary coils 111-116. The second coil includes a plurality of second coils 121-126. The at least one first connection part includes at least one of the first connection parts 131 - 134 . The at least one second connection part includes at least one of the second connection parts 141 - 144 .

In terms of structural configuration, the primary coils 111-116 and the secondary coils 121-126 are arranged alternately. In an embodiment, every two primary coils are arranged alternately with every two second coils. For example, the configuration of the inductance device 100 can be: the first coil 111, 112; the second coil 121, 122; the first coil 113, 114; the second coil 123, 124; the first coil 115 , 116; and the second coil 125,126. However, the present disclosure is not limited to the above-mentioned embodiments, and the first coils 111-116 and the second coils 121-126 can also be alternately arranged for each coil according to actual needs, or one of the first coils can be used. The interactive setting method of multiple turns of the first coil and the second coil, or the interactive setting method of the multi-turn of the first coil and one turn of the second coil, or the other interactive setting methods, depends on actual needs.

Please refer to FIG. 1 , at least one first connecting member is coupled to the first coil disposed on the outer side and the first coil disposed on the inner side among the first coils 111 - 116 . For example, the first connector 131 is coupled to the first coil 113 disposed on the outside and the first coil 115 disposed on the inside, and the first connector 132 is coupled to the first coil 114 disposed on the outside and the primary coil 116 disposed on the inner side. In one embodiment, the first connector 133 is coupled to the first coil 111 disposed on the outside and the first coil 113 disposed on the inside, and the first connector 134 is coupled to the first coil 113 disposed on the outside. The coil 112 and the primary coil 114 disposed inside.

In addition, at least one second connecting member is coupled to the second coil disposed on the outer side and the second coil disposed on the inner side among the second coils 121 - 126 . For example, the second connecting part 141 is coupled to the second secondary coil 121 disposed on the outside and the second secondary coil 123 disposed on the inside, furthermore, the second connecting part 142 is coupled to the second secondary coil 122 disposed on the outside and the second coil 124 disposed on the inner side. In one embodiment, the second connector 143 is coupled to the second coil 123 disposed on the outside and the second coil 125 disposed on the inside, and the second connector 144 is coupled to the second coil 125 disposed on the outside. The coil 124 and the second coil 126 disposed inside.

In one embodiment, the first central tap end 151 is coupled to the primary coil disposed outside the primary coils 111 - 116 . For example, among the primary coils 111-116, the primary coil 112 is disposed on the outer part of the overall structure of the inductance device 100, and the first central tap end 151 can be coupled to the outer first coil in configuration. secondary coil 112 . In another embodiment, please refer to the upper side of FIG. 1 , the inductance device 100 further includes a first input and output terminal 191, and the first input and output terminal 191 is arranged on the outermost first coil 111-116. The primary coil 111 is arranged on the upper side of the inductance device 100 . Based on the above structural configuration, the first central tap end 151 can be coupled to the outer primary coil 112, and directly pulled to the outermost side of the inductive device 100 through the first input and output end 191, without using other layers such as jumpers. Therefore, it is more convenient for structural design, and the first central tap end 151 is directly pulled out through the first input and output end 191, so that it can use the same material structure as the first coil 112, and can withstand higher currents. For example, the first central tap terminal 151 can be designed with a thicker metal layer, so as to withstand a larger current. For example, the first central tap end 151 and the primary coil 112 can be arranged on a redistribution layer (Redistribution Layer, RDL), and a thick metal layer is used as the material of the RDL, so that the first central tap end 151 can be Withstand higher current, and can be applied in the application of high current.

Referring to FIG. 1 , the first coils 111 - 116 and the second coils 121 - 126 are disposed on the same layer. In one embodiment, at least one first connector and at least one second connector are disposed on the same layer. However, the present disclosure is not limited to the above-mentioned embodiments, and the at least one first connection part and the at least one second connection part can also be disposed on different layers according to actual requirements. In another embodiment, at least one first connecting element and the primary coils 111 - 116 are disposed on different layers, and at least one second connecting element is disposed on different layers from the second secondary coils 121 - 126 . For example, the first connecting members 131 - 134 can be disposed on the upper layer of the primary coils 111 - 116 , or disposed on the lower layer of the primary coils 111 - 116 . In addition, the second connecting elements 141 - 144 can be disposed on the upper layer of the second coils 121 - 126 , or disposed on the lower layer of the second coils 121 - 126 , depending on actual needs.

In one embodiment, the first coil further includes first coils 1111 , 1112 , the first coil 1111 is coupled to the first coils 113 , 115 , and the first coil 1112 is coupled to the second coils 114 , 116 . In addition, the second coil further includes second coils 1211 , 1212 , the second coil 1211 is coupled to the second coils 121 , 123 , and the second coil 1212 is coupled to the second coils 122 , 124 . In another embodiment, at least one of the primary coils 111 - 116 is interleaved with at least one of the second coils 121 - 126 , 1211 , 1212 of the second coils through at least one first connecting member. For example, the first coil 113 is interleaved with the second coils 1211 , 1212 through the first connecting member 131 , and is coupled to the first coil 115 . In addition, the first coil 114 is interleaved with the second coils 1211 , 1212 through the connection piece 132 , and is coupled to the first coil 116 . In another embodiment, at least one of the second coils 121 - 126 is interleaved with at least one of the first coils 111 - 116 , 1111 , 1112 of the first coils through at least one second connecting member. For example, the second coil 121 is interleaved with the first coils 1111 and 1112 through the connection piece 141 , and is coupled to the second coil 123 . In addition, the second coil 122 is arranged alternately with the first coils 1111 and 1112 through the connection piece 142 , and is coupled to the second coil 124 .

In another embodiment, at least one first connecting piece spans at least one of the primary coils 111-116, 1111, 1112 of the first coil and the second secondary coils 121-126, 1211, 1212 of the second coil At least one of the primary coils is coupled to the primary coil disposed on the outside and the first coil disposed on the inside. For example, the first connecting member 131 straddles the first coils 1111 , 1112 and the second coils 1211 , 1212 to couple the first coil 113 disposed on the outside and the first coil 115 disposed on the inside. The first connecting member 132 spans the first coils 1111 , 1112 and the second coils 1211 , 1212 to couple the first coil 114 disposed on the outer side and the first coil 116 disposed on the inner side. In another embodiment, at least one second connecting piece spans at least one of the primary coils 111-116, 1111, 1112 of the first coil and the second secondary coils 121-126, 1211, 1212 of the second coil At least one of them is used to couple the second coil disposed on the outer side and the second coil disposed on the inner side among the second coils. For example, the second connecting member 141 spans the first coils 1111 , 1112 and the second coils 1211 , 1212 to couple the second coil 121 disposed on the outside and the second coil 123 disposed on the inside. The second connecting member 142 spans the first coils 1111 , 1112 and the second coils 1211 , 1212 to couple the second coil 122 disposed on the outside and the second coil 124 disposed on the inside.

In one embodiment, the inductance device 100 further includes at least one third connecting element, and the at least one third connecting element includes at least one of the third connecting elements 161 , 162 . One of the primary coils 111 - 116 is wound toward the center of the inductive device 100 to the inside, and is coupled to the other one of the primary coils 111 - 116 through at least one third connecting piece. For example, the first coil 116 is wound to the lower side in a counterclockwise direction, and is wound at the point P1 toward the center point C of the inductive device 100 to the inner point P2, and the first coil 116 is wound through the connecting piece 161. Point P2 of the coil 116 is coupled to the primary coil 115 . In addition, the first coil 115 is wound to the lower side in the counterclockwise direction, and is wound at point P3 toward the center point C of the inductive device 100 to the inner point P4, and the first coil 115 is connected through the connecting piece 162. Point P4 of is coupled to the primary coil 116 .

In another embodiment, the inductance device 100 further includes a fourth connecting element 171 . One of the second coils 121 - 126 is wound toward the center of the inductance device 100 to the inside, and is coupled to the same second coil 121 - 126 through the fourth connecting member 171 . For example, the second coil 122 is wound to the lower side in a clockwise direction, and is wound at point P5 toward the center point C of the inductive device 100 to the inner point P6, and the second coil 122 is connected to the second coil through the fourth connecting member 171. Point P6 of the secondary coil 122 is coupled back to the second secondary coil 122 .

In one embodiment, at least one third connecting element and the fourth connecting element 171 are disposed on the same side of the inductive device 100 . For example, the third connecting elements 161 , 162 and the fourth connecting element 171 are disposed on the lower side of the inductive device 100 . In another embodiment, the third connecting elements 161 , 162 and the fourth connecting element 171 are disposed on the same layer. However, the present disclosure is not limited to the above-mentioned embodiments, and the third connecting elements 161 , 162 and the fourth connecting element 171 can also be disposed on different layers according to actual needs. For example, the third connecting part 161, 162 can be arranged on the upper layer of the secondary coils 111-116, 121-126, and the fourth connecting part 171 can be arranged on the lower layer of the secondary coils 111-116, 121-126, or the third The connectors 161, 162 can be disposed on the lower layer of the secondary coils 111-116, 121-126, and the fourth connector 171 can be disposed on the upper layer of the secondary coils 111-116, 121-126, depending on actual needs.

Please refer to FIG. 1 , the inductance device 100 further includes a second center tap end 181 , and the second center tap end 181 is coupled to the outer second coil among the second coils 121 - 126 . For example, the second central tap end 181 is coupled to the point P6 of the second secondary coil 122 disposed outside. In one embodiment, the first central tap end 151 is disposed on a first side (such as an upper side) of the inductor device 100 , and the second central tap end 181 is disposed on a second side (such as a lower side) of the inductor device 100 . In another embodiment, the second central tap end 181 is disposed on different layers from the secondary coils 111 - 116 , 121 - 126 , and is disposed on different layers from the fourth connecting member 171 . In some embodiments, the second central tap end 181 may be disposed on the secondary coils 111-116, 121-126 and the fourth connecting member 171, or disposed on the secondary coils 111-116, 121-126 and the fourth connecting member 171 , or disposed between the secondary coils 111 - 116 , 121 - 126 and the fourth connecting member 171 , it depends on actual needs. In other embodiments, whether the second central tap terminal 181 is provided in the inductor device 100 can be determined according to actual needs. In other words, in some embodiments, the inductor device 100 may not include the second central tap terminal 181 .

In one embodiment, the inductor device 100 further includes a second input and output terminal 192 . The second input and output end 192 is disposed on the outermost secondary coil 121 among the second secondary coils 121 - 126 , and is disposed on the second side (lower side) of the inductive device 100 .

In another embodiment, the first side (such as the upper side) and the second side (such as the bottom side) of the inductive device 100 are arranged in the first direction (such as the vertical direction), and the third side (such as the left side) of the inductive device 100 ) and the fourth side (such as the right side) are arranged in a second direction (such as a horizontal direction) perpendicular to the first direction. Please refer to FIG. 1 , in terms of structural configuration, among the primary coils 111-116, the line width of the primary coils arranged on the first side (such as the upper side) and the second side (such as the lower side) is larger than that arranged on the third side ( The line width of the first coil on the fourth side (as on the left) and the fourth side (as on the right). In addition, among the second coils 121-126, the line width of the second coils disposed on the first side (such as the upper side) and the second side (such as the lower side) is larger than that disposed on the third side (such as the left side) and the fourth side. (as on the right) the line width of the second coil. The present disclosure adopts the structural configuration method in FIG. 1 , and the interleaving structure (such as the overall interlacing structure in which the first coil 113 is interleaved with the second coil 1211, 1212 through the first connector 131, etc.) can be configured in the inductance device 100 The first side (such as the upper side) and the second side (such as the lower side), so that the coils on the third side (such as the left side) and the fourth side (such as the right side) of the inductance device 100 can use the minimum Line width and line distance, so that the inductance device 100 can meet the design requirements of minimum area, and at the same time have high mutual inductance value.

FIG. 2 is a schematic diagram illustrating an inductance device 100A according to an embodiment of the disclosure. Compared with the inductance device 100 shown in FIG. 1 , the inductance device 100A further includes a second coil 127A, a third coil 211A, a fourth coil 221A, and a fifth coil 231A.

As shown in the figure, the second coil 127A is disposed on the innermost side among the second coils 121A˜127A. The third coil 211A is coupled to the inner second coil 125A at point P7, and is wound counterclockwise once and then coupled to the innermost second coil 127A at point P8. In one embodiment, the third coil 211A is disposed on the upper layer of the second secondary coil 127A, or disposed on the lower layer of the second secondary coil 127A, depending on actual needs.

The third coil 211A in the inductance device 100A can be used to adjust the inductance values of the first coil and the second coil, so that the inductance value of the first coil and the inductance value of the second coil are in a ratio of approximately one to one. FIG. 3 is a schematic diagram showing experimental data of an inductance device 100A according to an embodiment of the disclosure. As shown in the figure, the experimental curves L1 and L2 are the curves of the inductance values of the first coil and the second coil at different frequencies. It can be seen from the figure that the present disclosure adds a third coil 211A to the inductance device 100A, and The inductance value of the first coil and the inductance value of the second coil can be adjusted to a ratio of approximately one to one.

Please refer to FIG. 2 , the fourth coil 221A is coupled to the first coil disposed inside the first coils 111A˜116A. For example, the fourth coil 221A is coupled to the inner first coil 113A. In addition, the fourth coil 221A includes part of its structure on the left side and the right side of the inductance device 100A, and is symmetrical to each other based on the center point C of the inductance device 100A. In one embodiment, the fourth coil 221A is disposed on the upper layer of the primary coil 113A, or disposed on the lower layer of the primary coil 113A, depending on actual requirements.

The fifth coil 231A is coupled to the outermost primary coil among the primary coils 111A˜116A. For example, the fifth coil 231A is coupled to the outermost primary coil 111A. In addition, the fifth coil 231A includes a partial structure on the left side and the right side of the inductor device 100A, and is symmetrical to each other based on the center point C of the inductor device 100A. In one embodiment, the fifth coil 231A is disposed on the upper layer of the primary coil 111A, or disposed on the lower layer of the primary coil 111A, depending on actual needs.

It should be noted that, among the components of the inductive device 100A of FIG. 2 , those whose labels are similar to those of the components of the inductive device 100 of FIG. In order to make the description of the present disclosure concise, the structural configuration of FIG. 2 will not be repeated in the relevant description of FIG. 2 .

FIG. 4 is a schematic diagram showing experimental data of the inductance device 100 shown in FIG. 1 according to an embodiment of the present disclosure. As shown in the figure, the experimental curves of the quality factor (Q) of the two coils of the inductance device not adopting 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 adopting the structural configuration of the present disclosure are C3 and C4. In comparison, the average quality factor of the two coils of the inductive device 100 adopting the structural configuration of the present disclosure is higher by about 6% to 10%. It can be seen that the inductive device 100 adopting the structural configuration of the present disclosure does have an optimal quality factor.

It can be seen from the above embodiments of the present disclosure that the application of the present disclosure has the following advantages. The inductor 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 present disclosure, the central tap end can be pulled out directly from the outside of the inductance device without using jumpers or other methods that occupy other layered structures. Therefore, it is more convenient for structural design, and The center tap terminal is configured in such a way that it can be designed with more current tolerant materials to handle higher currents.

Although the specific embodiments of the present disclosure are disclosed in the above embodiments, they are not intended to limit the present disclosure. Those skilled in the art to which the present disclosure pertains can, without departing from the principles and concepts of the present disclosure, Various changes and modifications are made, so the protection scope of the present disclosure should be defined by the appended claims.

Claims (10)

1. An inductive device comprising: A first coil, including a plurality of first coils; A second coil, comprising a plurality of second coils, wherein the plurality of first coils and the plurality of second coils are arranged alternately; At least one first connecting piece, coupling the first coil disposed outside the second coil and another first coil disposed inside the second coil among the plurality of first coils; At least one second connecting piece, coupling the second secondary coil disposed outside the first coil and another second coil disposed inside the first coil among the plurality of second coils; Two first input and output terminals are arranged on the outermost primary coil among the plurality of primary coils; and A first central tap end, coupled to the first coil of the outer primary coils disposed inside the outermost first coil, and pulled between the two first input and output terminals to the outermost side of the inductive device. 2. The inductive device as claimed in claim 1, wherein the plurality of primary coils and the plurality of second coils are disposed on the same layer, wherein the at least one first connection part is connected to the at least one second connection The components are disposed on the same layer, wherein the at least one first connecting component is disposed on a different layer from the plurality of primary coils, and the at least one second connecting component is disposed on a different layer from the plurality of second coils. 3. The inductive device as claimed in claim 1 , wherein at least one of the plurality of primary coils is interleaved with at least one of the plurality of second coils through the at least one first connecting member , wherein at least one of the plurality of second coils is interlaced with at least one of the plurality of first coils through the at least one second connecting member. 4. The inductive device as claimed in claim 1, wherein the at least one first connecting member spans at least one of the plurality of primary coils and at least one of the plurality of second coils to couple Connecting the first coil disposed on the outer side and the first coil disposed on the inner side among the plurality of first coils, wherein the at least one second connecting piece spans one of the plurality of first coils One of the second coils and one of the plurality of second coils are coupled to the second coil disposed on the outside and the second coil disposed on the inside of the second coils. 5. The inductive device of claim 1, further comprising: One at least one third connecting piece, wherein one of the plurality of primary coils is wound toward the center point of the inductive device to the inner side, and is coupled to the plurality of coils through the at least one third connecting piece the other of the first coils; and A fourth connecting piece, wherein one of the plurality of second coils is wound toward the center point of the inductive device to the inner side, and is coupled to the plurality of second coils through the fourth connecting piece that one of the Wherein the at least one third connecting element and the fourth connecting element are disposed on the same side relative to the central point of the inductive device. 6. The inductive device of claim 1, further comprising: a second central tap end, coupled to the secondary coil disposed on the outside of the plurality of secondary coils; Wherein 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 terminal disposed on the first side of the inductive device; and A second input and output terminal is arranged on the outermost second coil among the plurality of second coils, and is arranged on the second side of the inductance device. 8. The inductive device as claimed in claim 7, wherein the first side and the second side of the inductive device are arranged in a first direction, a third side and a fourth side of the inductive device are arranged In a second direction perpendicular to the first direction, wherein among the plurality of primary coils, the line width of the primary coils disposed on the first side and the second side is larger than that disposed on the third side and the line width of the first coil on the fourth side, wherein the line width of the second coil disposed on the first side and the second side among the plurality of second coils is larger than that disposed on the third side and the line width of the second coil on the fourth side. 9. The inductive device of claim 1, further comprising: A third coil, coupled to two of the second secondary coils disposed inside of the plurality of secondary coils. 10. The inductive device of claim 9, further comprising: a fourth coil coupled to the first coil disposed on the inner side among the plurality of first coils; and A fifth coil, coupled to the primary coil disposed on the outermost side among the plurality of primary coils.