Patent ID: 11967448
Assignee: HYUNDAI MOTOR COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A planar transformer comprising:
a primary printed circuit board (PCB) having at least a hole in which a first core and a second core are inserted and including a coil pattern;
a secondary PCB having at least a hole in which the first core and the second core are inserted and including a coil pattern; and
a heat dissipation plate disposed between the primary PCB and the secondary PCB and including at least a hole in which the first core and the second core are inserted,
wherein inner heights of the first core and the second core are larger than a sum of thicknesses of the primary PCB, the heat dissipation plate and the secondary PCB so that a leakage inductance of the planar transformer is adjusted by adjusting a thickness of the heat dissipation plate.