Patent ID: 9368271
Filing Date: 2016-06-14
CPC Classification: H01F

Claim Text:
1. A transformer, comprising: a primary coil, comprising a first electrical path and a second electrical path respectively located at different sides of a symmetry line on a projection plane of the transformer, wherein a first terminal of the first electrical path and a first terminal of the second electrical path respectively serve as a first port and a second port of the primary coil, a second terminal of the first electrical path is connected to a second terminal of the second electrical path at the symmetry line, the first electrical path comprises a first partial path disposed on a first substrate and a second partial path disposed on a second substrate, the first partial path and the second partial path are connected to each other by at least one through silicon via, the second electrical path comprises a third partial path disposed on the first substrate and a fourth partial path disposed on the second substrate, and the third partial path and the fourth partial path are connected to each other by at least one through silicon via; and a secondary coil, comprising a third electrical path and a fourth electrical path respectively located at different sides of the symmetry line on the projection plane, wherein a first terminal of the third electrical path and a first terminal of the fourth electrical path respectively serve as a first port and a second port of the secondary coil, a second terminal of the third electrical path is connected to a second terminal of the fourth electrical path at the symmetry line, the third electrical path comprises a fifth partial path disposed on the first substrate and a sixth partial path disposed on the second substrate, the fifth partial path and the sixth partial path are connected to each other by at least one through silicon via, the fourth electrical path comprises a seventh partial path disposed on the first substrate and an eighth partial path disposed on the second substrate, and the seventh partial path and the eighth partial path are connected to each other by at least one through silicon via.