Synchronous rectification module

Patent metadata

Field	Value
Publication number	US-10490342-B2
Application number	US-201816006606-A
Country	US
Kind code	B2
Filing date	Jun 12, 2018
Priority date	Nov 10, 2017
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A synchronous rectification module includes a transformer, a first conducting member and a synchronous rectification unit. The transformer includes plural secondary winding assemblies. The outlet ends of the secondary winding assemblies are protruded out from a first lateral region and a second lateral region of the transformer. The first conducting member is located at a third lateral region of the transformer. The synchronous rectification unit includes a first circuit board and a second circuit board. The first circuit board is connected with the first conducting member and located at the first lateral region. The second circuit board is connected with the first conducting member and located at the second lateral region. The outlet ends of the secondary winding assemblies are penetrated through corresponding first insertion holes of the first circuit board and corresponding second insertion holes of the second circuit board.

First claim

What is claimed is:

1. A synchronous rectification module, comprising:
a transformer comprising plural secondary winding assemblies, wherein each of the secondary winding assemblies comprises plural outlet ends, and the outlet ends of portion of the secondary winding assemblies are protruded out from a first lateral region of the transformer and the outlet ends of the other portion of the secondary winding assemblies are protruded out from a second lateral region of the transformer, wherein the first lateral region and the second lateral region are located at two opposite sides of the transformer;
a first conducting member, wherein at least a portion of the first conducting member is located at a third lateral region of the transformer, and the third lateral region is arranged between the first lateral region and the second lateral region;
a synchronous rectification unit comprising a first circuit board and a second circuit board, wherein the first circuit board is connected with the first conducting member and located at the first lateral region, the second circuit board is connected with the first conducting member and located at the second lateral region, plural electronic components are installed on the first circuit board and the second circuit board, the first circuit board comprises plural first insertion holes, the second circuit board comprises plural second insertion holes, and the outlet ends of the secondary winding assemblies are penetrated through the corresponding first insertion holes and the corresponding second insertion holes, and
a magnetic core having a passage, wherein the first conducting member is partially disposed in the passage of the magnetic core so as to form a filtering inductor.

2. The synchronous rectification module according to claim 1 , wherein the transformer has a central tap structure, and each of the secondary winding assemblies comprises three outlet ends.

3. The synchronous rectification module according to claim 1 , wherein each of the secondary winding assemblies comprises two outlet ends.

4. The synchronous rectification module according to claim 1 , wherein the first conducting member further comprises a first coupling part and a second coupling part, the first circuit board comprises a third coupling part corresponding to the first coupling part, and the second circuit board comprises a fourth coupling part corresponding to the second coupling part, wherein the first coupling part is arranged beside the first lateral region of the transformer, the second coupling part is arranged beside the second lateral region of the transformer, the third coupling part is connected with the first coupling part, and the fourth coupling part is connected with the second coupling part.

5. The synchronous rectification module according to claim 4 , wherein the first coupling part and the second coupling part are bulges, and the third coupling part and the fourth coupling part are slots.

6. The synchronous rectification module according to claim 4 , wherein the first coupling part and the second coupling part are slots, and the third coupling part and the fourth coupling part are bulges.

7. The synchronous rectification module according to claim 4 , wherein the first conducting member comprises a first plate, wherein the first plate is located at the third lateral region, and the first coupling part and the second coupling part are located at the first plate.

8. The synchronous rectification module according to claim 7 , wherein the first conducting member further comprises a second plate with a first segment, a bent structure and a second segment, wherein the first segment of the second plate is connected with the first plate, the bent structure is arranged between the first segment and the second segment, and the second segment is connected with the bent structure and perpendicular to the first segment, wherein the second segment of the second plate is arranged beside the first lateral region, the second lateral region, a fifth lateral region or a sixth lateral region of the transformer, and the second segment of the second plate is disposed in the passage of the magnetic core so that the magnetic core and the second segment of the second plate are configured as the filtering inductor, wherein the first lateral region, the second lateral region, the fifth lateral region and the sixth lateral region are arranged between the third lateral region and a fourth lateral region, wherein the third lateral region, the fourth lateral region, the fifth lateral region and the sixth lateral region are arranged between the first lateral region and the second lateral region, wherein the first lateral region, the second lateral region, the third lateral region and the fourth lateral region are arranged between the fifth lateral region and the sixth lateral region.

9. The synchronous rectification module according to claim 1 , wherein the secondary winding assemblies are connected with each other in series or in parallel.

10. The synchronous rectification module according to claim 1 , wherein the first conducting member is made of copper.

11. The synchronous rectification module according to claim 1 , wherein the synchronous rectification module further comprises a second conducting member, wherein the second conducting member is located at a sixth lateral region of the transformer, and the second conducting member is connected with the first circuit board and the second circuit board.

12. The synchronous rectification module according to claim 11 , wherein the second conducting member is made of copper.

13. The synchronous rectification module according to claim 12 , wherein the second conducting member further comprises a fifth coupling part and a sixth coupling part, the first circuit board comprises a seventh coupling part corresponding to the fifth coupling part, and the second circuit board comprises an eighth coupling part corresponding to the sixth coupling part, wherein the fifth coupling part is arranged beside the first lateral region of the transformer, the sixth coupling part is arranged beside the second lateral region of the transformer, the seventh coupling part is connected with the fifth coupling part, and the eighth coupling part is connected with the sixth coupling part.

14. The synchronous rectification module according to claim 1 , wherein the transformer further comprises plural primary winding assemblies, a bobbin, a first magnetic core and a second magnetic core, and the bobbin comprises a winding section and a hollow portion, wherein the primary winding assemblies are wound around the winding section, the plural secondary winding assemblies are sheathed around the winding section, the first magnetic core and the second magnetic core are located at two opposite sides of the bobbin, and a middle leg of the first magnetic core and a middle leg of the second magnetic core are accommodated within the hollow portion.

15. The synchronous rectification module according to claim 1 , wherein the transformer further comprises plural primary winding assemblies, a first bobbin, a second bobbin, a first magnetic core and a second magnetic core, the first bobbin comprises a first winding section and a first hollow portion, and the second bobbin comprises a secondary winding section and a second hollow portion, wherein the primary winding assemblies are wound around the first winding section and the second winding section, the plural secondary winding assemblies are sheathed around the first winding section and the second winding section, and the first magnetic core and the second magnetic core are located at two

Assignees

• Delta Electronics Thailand Public Co Ltd

Inventors

• Lu Hao
• Hong Tianding
• Zhang Tao
• Shen Bo
• Ke Zhongwei

Classifications

• H01F27/24

  Magnetic cores · CPC title

• H05K2201/1003

  Non-printed inductor · CPC title

• H01F27/263

  Fastening parts of the core together · CPC title

• H05K1/145

  Arrangements wherein electric components are disposed between and simultaneously connected to two planar printed circuit boards, e.g. Cordwood modules · CPC title

• H01F27/40 Primary

  Structural association with built-in electric component, e.g. fuse · CPC title