1 MHz Series-Resonant DC-DC Converter

• Main Authors: WEI-CHIH HSU, 徐瑋志
• Other Authors: Huang-Jen Chiu
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/27912275460932833783

碩士 === 國立臺灣科技大學 === 電子工程系 === 104 === The requirement for power density becomes higher and higher to fit the market demand of power supplies. The current trend is towards high-frequency design and operation because Gallium-nitride (GaN) transistors bring a new breakthrough in high-frequency applications. Due to the steady development of GaN technology, the device reliability is highly increasing. More device specifications are also available for various applications. This thesis aims to study the GaN transistors applied to a series resonant converter for switching loss reduction under high-frequency operation. A buck converter is added as the post-stage circuit to regulate output voltage. A planar transformer is designed to replace the conventional transformer for realizing low-profile converter. A 1 MHz/ 500 W half-bridge series resonant converter is implemented and tested. The experimental results are shown to verify theoretical analysis.