The present application claims priority to Taiwan Application Serial Number 109120713, filed Jun. 19, 2020, which is incorporated herein by reference in its entirety.
The present disclosure relates to an electronic device. More particularly, the present disclosure relates to a transformer device.
In existing technology, the stacked or spiral inductors can be designed with different winding methods according to different application requirements. However, different winding methods have their corresponding advantages and disadvantages. For example, the wires in the same coil of the spiral structure will have higher mutual inductance value, but cause a problem of higher parasitic capacitance correspondingly. Therefore, it is important to achieve balance among inductance, quality factor, parasitic capacitance and other related factors.
In order to solve the problem mentioned above, the present disclosure provides a transformer device including a first coil and a second coil. The first coil includes a number of first circles. The second coil includes a number of second circles. A first side of a first one of the first coil is adjacent to one of the first coil, and a second side of the first one of the first coil is adjacent to one of the second coil. A first side and a second side of a second one of the first coil are adjacent to one of the second coil, respectively.
It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the invention as claimed.
The present disclosure can be more fully understood by reading the following detailed description of the embodiment, with reference made to the accompanying drawings as follows:
Reference will now be made in detail to the present embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
It will be understood that, although the terms first, second, third etc. may be used herein to describe various elements, components and/or sections, these elements, components and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component or section from another element, component or section. Thus, a first element, component or section discussed below could be termed a second element, component or section without departing from the teachings of the present disclosure.
The terms herein are used for describing particular embodiments and are not intended to be limited thereto. Single forms such as “a,” “this,” “the,” as used herein also include the plurality form.
In the description herein and throughout the claims that follow, the terms “coupled” or “connected” in this document may be used to indicate that two or more elements physically or electrically contact with each other, directly or indirectly. They may also be used to indicate that two or more elements cooperate or interact with each other.
In the description herein and throughout the claims that follow, the terms “comprise,” or “comprising,” “include,” or “including,” “have,” or “having,” “contain,” or “containing,” and the like used herein are to be understood to be open-ended, i.e., to mean including but not limited to.
In the description herein and throughout the claims that follow, the phrase “and/or” includes any and all combinations of one or more of the associated listed claims.
In the description herein and throughout the claims that follow, unless otherwise defined, all terms have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Reference is now made to
For ease of understanding, a transformer device 1000 shown in
In some embodiments, the second wire 1211 and the second wire 1212 are located at two sides of the first wire 1113 respectively, the first wire 1115 is located at one side of the first wire 1116, and the second wire 1213 is located at the other side of the first wire 1116. In other words, a part of the first wire(s) of the first coil 1100 have both sides adjacent to the second wire of the second coil 1200, and the other part of the first wire(s) of the first coil 1100 have one side adjacent to the first wire and the other side adjacent to the second wire.
In some embodiments, from the top view of the cross section line X shown in
References are now made to
In some embodiments, the first wires of the first coil 1100 are disposed on the first metal layer, and the second wires of the second coil 1200 are disposed on the second metal layer, in which the first wire and the second wire can be coupled by a vertical connector (e.g., via). For example, via(s) V1 shown in
In some embodiments, a first side S1 is at the upper side of the transformer device 1000, and a second side is at the lower side of the transformer device 1000, in which the first side S1 is in parallel with the second side S2. In some embodiments, a third side S3 is at the left side of the transformer device 1000, and a fourth side S4 is at the right side of the transformer device 1000, in which the third side S3 is in parallel with the fourth side S4, and the first side S1 and the second side S2 are substantially perpendicular to the third side S3 and the fourth side S4.
In some embodiments, the first side S1 of the transformer device 1000 includes an opening 1221 between the second wire 1220 and the second wire 1222. In some embodiments, the first side S1 of the transformer device 1000 includes a first connector C1 and a second connector C2 disposed on the second metal layer. The first connector C1 is a Z-shaped structure with right angle, and is configured to go through the opening 1221 to connect an opening OE1 between the partial first wire C11 and the partial first wire C12, and to cross the first wire 1131, and crosses the first wire 1131 which is in vertical direction. The second connector C2 is a Z-shaped structure with right angle, and is configured to connect an opening OE2 between the partial first wire C21 and the partial first wire C22. The second connector C2 crosses the first wire 1132 and the first wire 1133 disposed vertically.
In some embodiments, the second wire 1230 turns in a Z-shape on the first side S1, and crosses the first wire 1140.
In some embodiments, the transformer device 1000 further includes a first input/output terminal 1171 disposed on the first side S1, which is formed by extension of the outermost first wire on the first side S1.
In some embodiments, the second side S2 of the transformer device 1000 includes a third connector C3, a fourth connector C4 and a fifth connector C5 disposed on the second metal layer. The third connector C3 is a Z-shaped structure, and is configured to connect an opening OE3 between a partial first wire C31 and a partial first wire C32. The third connector C3 crosses the first wire 1134, and forms a X-shaped structure with the first wire 1134. The fourth connector C4 is a Z-shaped structure, and is configured to connect an opening OE4 between a partial first wire C41 and a partial first wire C42. Also, the fourth connector C4 crosses the first wire 1135, and form an X-shaped structure with the first wire 1135. The fifth connector C5 is a Z-shaped structure with right angle, and is configured to connect an opening OE5 between a partial first wire C51 and a partial first wire C52, and the fifth connector C5 crosses the first wire 1136 and the first wire 1137 disposed vertically.
In some embodiments, the second wire 1240 turns in a Z-shape on the second side S2, and crosses the first wire 1150.
In some embodiments, the partial first wire C51, the partial first wire C31 and the first wire C71 are crossed by the second wire 1251 and the second wire 1252, to connect two terminals of the first wire located at innermost side.
In some embodiments, the transformer device 1000 further includes a second input/output terminal 1172 disposed on the second side S2, which is formed by extension of the outermost first wire on the second side S1.
In some embodiments, the third side S3 of the transformer device 1000 includes the partial first wire I11 interlaced with the partial second wire I21, and the partial first wire I12 interlaced with the partial second wire I22. In this way, the interlacing area of the first coil 1100 and the second coil 1200 on the first side S1 and the second side S2 can be reduced (e.g., the first wire 1150 is the only one crossed by the second wire 1240 on the second side S2). For example, in some embodiments, when the partial first wire I12 is not interlaced with the partial second wire I22 on the third side S3 (not shown in figure), the first wire 1150 and the first wire 1160 are crossed by the second wire 1240 in the second side S2.
In some embodiments, the fourth side S4 of the transformer device 1000 includes a partial first wire I13 interlaced with a partial second wire I23. In some embodiments, the fourth side S4 of the transformer device 1000 further includes a partial first wire I14 interlaced with a partial second wire I24. When the transformer device 1000 includes the partial first wire I11 interlaced with the partial second wire I21 on the third side S3, and includes the partial first wire I12 of the first wire interlaced with the partial second wire I22 on the third side S3, the third side S3 of the transformer device 1000 is symmetrical to the fourth side S4 of the transformer device 1000, and the interlacing area of the first coil 1100 and the second coil 1200 on the first side S1 and the second side S2 are reduced correspondingly, such that the resistance of the transformer device 1000 can be reduced and the quality factor of the transformer device 1000 can be increased.
In sum, with interlacing, crossing and overlapping of the first wires and the second wires, the transformer device in the present disclosure has better structural symmetry and quality factor (Q).
Although the present disclosure has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.
It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the present disclosure cover modifications and variations of this disclosure provided they fall within the scope of the following claims.
Number | Date | Country | Kind |
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109120713 | Jun 2020 | TW | national |
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Number | Date | Country | |
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20210398739 A1 | Dec 2021 | US |