Patent ID: 11955273
Assignee: HYUNDAI MOBIS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method for setting an air gap in a core region and a turns ratio of a transformer of a low-voltage DC-DC converter, the method comprising:
setting a power switching element based on a voltage/current capacity and a parasitic capacitance;
setting a minimum inductance to secure a zero voltage switching operation of the power switching element;
adjusting the air gap in the core region and the turns ratio of the transformer based on an input voltage range of the transformer;
calculating a leakage inductance of the transformer;
comparing the minimum inductance with the leakage inductance; and
adaptively adjusting the air gap and the turns ratio based on a result of the comparing,
wherein the air gap in the core region is set on a basis of a magnetizing inductance, the number of primary turns, a magnetic resistance of the core region, and a magnetic resistance of the air gap.