Patent ID: 11923125
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. A power conversion device comprising:
a multilayer board including conductive layers that form a primary-side coil and a secondary-side coil of a transformer;
a circuit board electrically connected to the multilayer board, the circuit board having a first conversion circuit formed therein or thereon; and
a rectangular-shaped notch portion formed on one side of the circuit board,
wherein the multilayer board includes
a transformer region in which the transformer is formed,
a core member which is disposed in the transformer region and around which the primary-side coil and the secondary-side coil are wound,
a circuit formed region which is adjacent to the transformer region and in which a second conversion circuit is formed, the second conversion circuit being electrically connected to one coil of the primary-side coil and the secondary-side coil,
a first terminal portion which is electrically connected to the other coil of the primary-side coil and the secondary-side coil, and
a second terminal portion which is electrically connected to the second conversion circuit,

wherein the multilayer board is disposed in the notch portion such that a part of the multilayer board overlaps the circuit board,
wherein the first conversion circuit is electrically connected to the transformer via the first terminal portion,
wherein the second conversion circuit is electrically connected to the circuit board via the second terminal portion, and
wherein the one coil connected to the second conversion circuit has a smaller number of turns than the other coil connected to the first terminal portion.