US 12,334,249 B2
Magnetic component and switch power supply device
Zengyi Lu, Taoyuan (TW); Tianding Hong, Taoyuan (TW); Haijun Yang, Taoyuan (TW); and Jinfa Zhang, Taoyuan (TW)
Assigned to Delta Electronics, Inc., Taoyuan (TW)
Filed by Delta Electronics, Inc., Taoyuan (TW)
Filed on Jul. 7, 2022, as Appl. No. 17/811,075.
Application 17/811,075 is a division of application No. 16/197,385, filed on Nov. 21, 2018, granted, now 11,417,458.
Claims priority of application No. 201810522699.6 (CN), filed on May 28, 2018.
Prior Publication US 2022/0336144 A1, Oct. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01F 27/28 (2006.01); H01F 27/24 (2006.01); H01F 27/29 (2006.01); H01F 27/32 (2006.01); H01F 38/00 (2006.01); H02M 1/00 (2006.01); H02M 3/335 (2006.01)
CPC H01F 27/32 (2013.01) [H01F 27/24 (2013.01); H01F 27/2823 (2013.01); H01F 27/29 (2013.01); H01F 38/00 (2013.01); H02M 1/0064 (2021.05); H02M 1/0074 (2021.05); H02M 3/33569 (2013.01); H02M 3/33576 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A magnetic component comprising:
a magnetic core, having a first winding column, a second winding column, a third winding column, a first side column, a second side column, and a first cover plate and a second cover plate which are disposed opposite to each other,
wherein the second winding column is disposed between the first winding column and the third winding column, the first side column and the second side column are disposed respectively outside the first winding column and the third winding column, the first cover plate and the second cover plate are disposed respectively above and below the first winding column, the second winding column, the third winding column, the first side column and the second side column, the first cover plate is connected to an upper end of each of the first winding column, the second winding column, the third winding column, the first side column, and the second side column, the second cover plate is connected to a lower end of each of the first winding column, the second winding column, the third winding column, the first side column, and the second side column, to form a closed magnetic flux loop;
wherein the magnetic component further comprising a first winding, a second winding and a third winding, wherein the first winding is wound on the first winding column, the second winding is wound on the second winding column, and the third winding is wound on the third winding column, and the first winding, the second winding and the third winding are electrically coupled in series;
a current flows through the first winding, the second winding and the third winding in sequence, wherein a magnetic flux of the first winding column and a magnetic flux of the third winding column have a first direction when the current flows through the first winding and the third winding, and a magnetic flux of the second winding column has a second direction when the current flows through the second winding, wherein the first direction is opposite to the second direction, wherein the current has the same magnitude and phase, the magnetic flux of the first winding column, the second winding column and the third winding column are equal in magnitude;
in a plane where the magnetic core is located, there is a straight line simultaneously contacts with or penetrates through the first winding column, the second winding column, and the third winding column.