US 12,431,275 B2
Multiphase inductor structure
Martin Kuo, New Taipei (TW); and Nanhai Zhu, Shenzhen (CN)
Assigned to ITG ELECTRONICS, INC., New Taipei (TW)
Filed by ITG Electronics, Inc., New Taipei (TW)
Filed on Dec. 3, 2021, as Appl. No. 17/541,376.
Prior Publication US 2023/0178287 A1, Jun. 8, 2023
Int. Cl. H01F 27/28 (2006.01); H01F 27/24 (2006.01); H01F 27/29 (2006.01)
CPC H01F 27/24 (2013.01) [H01F 27/29 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A multiphase inductor structure, comprising:
a main magnetic core body having a plurality of recesses, wherein a plurality of partition walls each are formed between corresponding two of the plurality of recesses;
a plurality of secondary magnetic core bodies respectively disposed in the plurality of recesses;
a plurality of main coils respectively disposed in the plurality of recesses and respectively correspond to the plurality of secondary magnetic core bodies; wherein each of the plurality of main coils has a first end part and a second end part that extend in opposite directions, and the first end part and the second end part are exposed from the main magnetic core body;
a plurality of secondary coils respectively disposed in the plurality of recesses and respectively correspond to the plurality of main coils; wherein each of the plurality of secondary coils has a third end part and a fourth end part that extend in opposite directions, and the third end part and the fourth end part are exposed from the main magnetic core body; and
at least one metal sheet for connecting two of the plurality of secondary coils that are adjacent to each other;
wherein each of the plurality of main coils is arranged between the main magnetic core body and a corresponding one of the plurality of secondary coils, and each of the plurality of secondary coils is arranged between a corresponding one of the plurality of main coils and a corresponding one of the plurality of secondary magnetic core bodies;
wherein the main magnetic core body is used for coupling a corresponding one of the plurality of secondary magnetic core bodies, a corresponding one of the plurality of main coils, and a corresponding one of the plurality of secondary coils in each of the plurality of recesses to from an inductor, and the plurality of inductors are not coupled to each other;
wherein a distance between a bottom surface of the third end part or the fourth end part of the secondary coil, and a top surface of the main magnetic core body is equal to a distance between the top surface of the main magnetic core body and a bottom surface of one of the plurality of partition walls;
wherein the at least one metal sheet connects the third end part of one of the two secondary coils that are adjacent to each other to the fourth end part of another one of the two secondary coils that are adjacent to each other.