Analysis, Design Method of High-Frequency Integrated Transformer Structure

As LLC resonant converter applied to various fields in recent years are developed, research has continued on integrated transformer that can not only achieve high efficiency, high density, but also reduce cost. In this paper, an integrated transformer structure and theory based design method that can precisely adjust the leakage inductance without an additional device are proposed. To verify the effectiveness of the proposed structure, measurement results of high-frequency integrated transformer are presented.