Transformer device

Patent metadata

Field	Value
Publication number	US-12266463-B2
Application number	US-202117378917-A
Country	US
Kind code	B2
Filing date	Jul 19, 2021
Priority date	Dec 30, 2020
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

A transformer device includes a first and a second trace, a first and a second connection member, and a first input/output member. A second sub-trace of the first trace is coupled to a first sub-trace of the first trace at a first and a second area. The first connection member is coupled to the first and the second sub-trace. The first and a third sub-trace of the second trace are disposed in turn. A fourth sub-trace of the second trace is coupled to the third sub-trace at the first and the second area. The second and the fourth sub-trace are disposed in turn. The second connection member is coupled to the third and the fourth sub-trace. The first sub-trace includes first wires, and the first input/output member is coupled to the first wire which is located at an inner side among the first wires.

First claim

What is claimed is:

1. A transformer device, comprising:
a first trace, comprising:
a first sub-trace, located on a first layer; and
a second sub-trace, located on a second layer, and coupled to the first sub-trace at a first area and a second area respectively, wherein the first area and the second area are connected to each other at a junction;

a first connection member, coupled to the first sub-trace and the second sub-trace;
a second trace, comprising:
a third sub-trace, located on the first layer, and disposed in turn with the first sub-trace at the first area and the second area respectively; and
a fourth sub-trace, located on the second layer, coupled to the third sub-trace at the first area and the second area respectively, and disposed in turn with the second sub-trace at the first area and the second area respectively;

a second connection member, coupled to the third sub-trace and the fourth sub-trace; and
a first input/output member, disposed at the first area, wherein the first sub-trace comprises a plurality of first wires, and the first input/output member is coupled to the first wire which is located at an inner side among the first wires, wherein the first input/output member is located on a third layer.

2. The transformer device of claim 1 , wherein the first input/output member is coupled to the first wire which is located at the innermost side among the first wires.

3. The transformer device of claim 1 , wherein the second sub-trace comprises a plurality of second wires.

4. The transformer device of claim 3 , wherein the first input/output member comprises:
a first terminal, coupled to the first wire which is located at an inner side among the first wires; and
a second terminal, disposed at a side which is opposite to the junction, and located at a block at which the first trace is not disposed.

5. The transformer device of claim 4 , further comprising:
a first center-tapped, disposed at the second area, and coupled to the first wire which is located at an inner side among the first wires, wherein the first center-tapped is located on the third layer.

6. The transformer device of claim 5 , wherein the first center-tapped is coupled to the first wire which is located at the innermost side among the first wires.

7. The transformer device of claim 5 , wherein the first center-tapped comprises:
a first terminal, coupled to the first wire which is located at an inner side among the first wires; and
a second terminal, disposed at a side which is opposite to the junction, and located on at a block at which the first sub-trace is not disposed.

8. The transformer device of claim 7 , wherein the first wires and the second wires are coupled to each other at a first side and a second side of the transformer device in an interlaced manner.

9. The transformer device of claim 8 , wherein the third sub-trace comprises a plurality of third wires, and the fourth sub-trace comprises a plurality of fourth wires.

10. The transformer device of claim 9 , further comprising:
a second input/output member, disposed at the first area, and coupled to the third wire which is located at an inner side among the third wires, wherein the second input/output member is located on the third layer.

11. The transformer device of claim 10 , wherein the second input/output member is coupled to the third wire which is located at the innermost side among the third wires.

12. The transformer device of claim 10 , wherein the second input/output member comprises:
a first terminal, coupled to the third wire which is located at an inner side among the third wires; and
a second terminal, disposed at a side which is opposite to the junction, and located at a block at which the third sub-trace is not disposed.

13. The transformer device of claim 12 , further comprising:
a second center-tapped, disposed at the second area, and coupled to the third wire which is located at an inner side among the third wires, wherein the second center-tapped is located on the third layer.

14. The transformer device of claim 13 , wherein the second center-tapped is coupled to the third wire which is located at the innermost side among the third wires.

15. The transformer device of claim 13 , wherein the second center-tapped comprises:
a first terminal, coupled to the third wire which is located at an inner side among the third wires; and
a second terminal, disposed at a side which is opposite to the junction, and located at a block at which the third sub-trace is not disposed.

16. The transformer device of claim 15 , wherein the third wires and the fourth wires are coupled to each other at the first side and the second side of the transformer device in an interlaced manner.

17. The transformer device of claim 16 , wherein the first connection member is disposed at a block at which the first sub-trace and the second sub-trace are not disposed and which is adjacent to the junction.

18. The transformer device of claim 17 , wherein the second connection member disposed at a block at which the third sub-trace and the fourth sub-trace are not disposed and which is adjacent to the junction.

19. The transformer device of claim 18 , wherein the first connection member is located on the first layer and the second layer, wherein the first layer is different from the second layer.

20. The transformer device of claim 19 , wherein the second connection member is located on the first layer and the second layer.

Assignees

• Realtek Semiconductor Corp

Inventors

• Yen Hsiao-Tsung
• Huang Ting-Yao

Classifications

• H01F27/29

  Terminals; Tapping arrangements {for signal inductances} · CPC title

• H01F19/06

  Broad-band transformers, e.g. suitable for handling frequencies well down into the audio range · CPC title

• H01F2027/2809

  on stacked layers · CPC title

• H01F27/2804 Primary

  Printed windings · CPC title