Implementation of a Novel Cascoded Step-Up Converter

• Main Authors: Guan-Yu Lin, 林冠宇
• Other Authors: Ming-Yang Cheng
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/21421830371386468485

碩士 === 國立成功大學 === 電機工程學系專班 === 97 === In this thesis, a novel cascoded converter is proposed. Talking about the conventional Flyback converter, the energy of leakage inductor can not be used efficiently. Both the Buck-Boost converter and the Flyback converter are combined to make the energy of leakage inductor transfer to output load. Additionally, the stress of the power elements is reduced to enhance the whole efficiency. The transfer voltage ratio is increased by casecoding the input power supply with bulky output capacitors. First, the development procedure from traditional topology to casecoded topology is discussed. Second, the operation principles and design considerations of the proposed cascoded converter are discussed. Finally, a cascoded converter with input voltage 24V, output voltage 48V, and output power 144W is implemented. The results of this experiment are used to verify the analysis of theories.