公开(公告)号：US20240194389A1

公开(公告)日：2024-06-13

申请号：US18421846

申请日：2024-01-24

Applicant: Delta Electronics, Inc

Inventor： Chun-Ching Yen ,  Yue Tsao ,  Shaodong Zhang ,  Chih-Ho Lai ,  Ying-Chieh Chin

IPC: H01F27/28 ,  H01F27/02 ,  H01F27/24 ,  H01F27/29

CPC classification number: H01F27/2804 ,  H01F27/02 ,  H01F27/24 ,  H01F27/292

Abstract: A planar transformer includes a magnetic core assembly, at least one printed circuit board, a magnetic conductive sheet and at least one winding module. The magnetic core assembly includes a first magnetic core and a second magnetic core. The printed circuit board is disposed between the first magnetic core and the second magnetic core. The printed circuit board includes a first winding. The magnetic conductive sheet is disposed between the first magnetic core and the second magnetic core to form a leakage inductance required by the planar transformer. The at least one winding module is disposed between the first magnetic core and the second magnetic core. The winding module includes a second winding and a plastic molding layer. At least a portion of the second winding is covered by the plastic molding layer. The at least one printed circuit board and the at least one winding module are individual components.