US 11,791,087 B2
Planar converter
Da Jin, Taoyuan (TW); Yahong Xiong, Taoyuan (TW); and Qinghua Su, Taoyuan (TW)
Assigned to Delta Electronics, Inc., Taoyuan (TW)
Filed by Delta Electronics, Inc., Taoyuan (TW)
Filed on Aug. 5, 2021, as Appl. No. 17/444,561.
Application 17/444,561 is a division of application No. 16/601,576, filed on Oct. 14, 2019, granted, now 11,128,233.
Claims priority of application No. 201811222289.6 (CN), filed on Oct. 19, 2018.
Prior Publication US 2021/0367527 A1, Nov. 25, 2021
Int. Cl. H05K 1/16 (2006.01); H05K 1/18 (2006.01); H01F 27/00 (2006.01); H01F 27/24 (2006.01); H01F 27/26 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01); H02M 3/28 (2006.01); H02M 3/155 (2006.01); H02M 3/335 (2006.01); H02M 7/00 (2006.01); H01R 12/52 (2011.01); H05K 1/14 (2006.01); H02M 3/00 (2006.01)
CPC H01F 27/2804 (2013.01) [H01F 27/24 (2013.01); H01R 12/523 (2013.01); H02M 3/33523 (2013.01); H02M 7/003 (2013.01); H05K 1/144 (2013.01); H05K 1/165 (2013.01); H05K 1/18 (2013.01); H01F 2027/2809 (2013.01); H01F 2027/2819 (2013.01); H02M 3/003 (2021.05); H02M 3/01 (2021.05); H02M 3/33571 (2021.05); H02M 3/33573 (2021.05); H05K 2201/066 (2013.01); H05K 2201/10166 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A planar converter, comprising:
a magnetic unit comprising at least two first planar windings, at least one second planar winding and a magnetic core assembly, the at least two first planar windings and the at least one second planar winding magnetically coupled through the magnetic core assembly;
at least two closed circuits comprising a first closed circuit and a second closed circuit, wherein each closed circuit comprises at least one of the first planar windings, at least one first switch, and at least two connection points comprising a first connection point and a second connection point; and
two printed circuit boards (PCBs) comprising a first printed circuit board and a second printed circuit board,
wherein each printed circuit board comprises a first surface and a second surface opposite to each other, the at least one of the first planar windings, the at least one first switch, and the at least two connection points of the first closed circuit are disposed on the first printed circuit board, and the at least one of the first planar windings, the at least one first switch, and the at least two connection points of the second closed circuit are disposed on the second printed circuit board,
wherein the second surfaces of the two printed circuit boards are adjacent and the second surfaces of the two printed circuit boards are directly welded to each other,
wherein the first connection points of the two closed circuits are electrically connected by welding the second surfaces of the two printed circuit boards, the second connection points of the two closed circuits are electrically connected by welding the second surfaces of the two printed circuit boards, and the two closed circuits are connected in parallel by welding the second surfaces of the two printed circuit boards, and
wherein the first connection point and the second connection point of the first closed circuit serve as power terminals to transmit energy, the first connection point and the second connection point of the second closed circuit serve as power terminals to transmit energy.