Delta Electronics, Inc.

Aiming Xiong

Jianping Ying

Jianhong Zeng

Teng Liu

Xiaoni Xin

Haoyi Ye

Fan Li

Ziying Zhou

Xingkuan Guo

Jian Zeng

Xiaojun Deng

The present invention discloses a transformer structure. The transformer structure comprises a first primary winding, and a first secondary circuits. The first secondary circuits comprises a filtering capacitor, a conductive Cu windings and a rectifier configured onto the printed circuit board (PCB) forming the first secondary circuits PCB winding. The first primary winding and the secondary circuits are interleaved with each other.

Transformer structure

An input stage circuit of a three-level DC/DC converter is provided. The input stage circuit uses metal-oxide-semiconductor field effect transistors (MOSFETs) to discharge a flying capacitor to maintain the voltage across the flying capacitor at a half of the input voltage. Not only can the input stage circuit solve the high voltage issue across the flying capacitor in the prior art, but the circuit is able to operate normally without increasing power consumption during discharging, thereby avoiding problems of the prior art.

Input stage circuit of three-level DC/DC converter

Growing community of inventors

Shanghai, China

Aiming Xiong