	US 12,266,465 B2
	Manufacturing method of a transformer
Pao Wei Lin, Hsinchu (TW); Wei Liang Lin, Taichung (TW); Pei Wang, New Taipei (TW); Jia Yao Lin, Tainan (TW); Yu Ting Chen, Taichung (TW); and Chien-Chih Lai, Taichung (TW)
Assigned to Champion Microelectronic Corp., Hsinchu (TW)
Filed by CHAMPION MICROELECTRONIC CORP., Hsinchu (TW)
Filed on Nov. 29, 2021, as Appl. No. 17/456,718.
Claims priority of application No. 110124707 (TW), filed on Jul. 6, 2021.
Prior Publication US 2023/0007928 A1, Jan. 12, 2023
Int. Cl. H01F 7/06 (2006.01); H01F 27/28 (2006.01); H01F 27/32 (2006.01); H01F 41/06 (2016.01)

CPC H01F 27/2823 (2013.01) [H01F 27/325 (2013.01); H01F 41/06 (2013.01)]

2 Claims

1. A manufacturing method of a transformer, comprising the steps of:

connecting one end of a first winding wire to a first pin of a bobbin;

connecting the other end of the first winding wire to a second pin of the bobbin after winding the first winding wire around the bobbin for at least one turn;

connecting one end of a second winding wire to a third pin of the bobbin;

connecting the other end of the second winding wire to a fourth pin of the bobbin after winding the second winding wire around the bobbin for at least one turn;

connecting one end of a third winding wire to the second pin of the bobbin, and connecting one end of a fourth winding wire to a fifth pin of the bobbin; and

connecting the other end of the third winding wire to the fifth pin of the bobbin and connecting the other end of the fourth winding wire to the sixth pin of the bobbin after winding the third winding wire and the fourth winding wire around the bobbin in parallel for at least one turn;

wherein the first winding wire, the third winding wire and the fourth winding wire form a primary coil of the transformer, and the second winding wire is a secondary coil of the transformer.