New high step-up DC-DC converter with quasi Z-source network

IEICE Electronics Express

article

Toru Sai¹  Younghyun Moon¹  Yasuhiro Sugimoto² 

[1] Dept. Engineering, Tokyo Polytechnic University;Department of Psychiatry and Behavioral Sciences,University of Washington

关键词: high step-up DC-DC converter;    quasi Z-source;    output ripple;    high side driver free;    low voltage stress;   

DOI  :  10.1587/elex.19.20220356

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

A new quasi-Z-source high step-up dc-dc converter is proposed in this letter. Compared with a conventional quasi-Z-source dc-dc converter, the proposed converter features low voltage ripple at the output, the use of a common source switch, and low stress on circuit elements. The advantages including low EMI, free of high side driver, and reduction of cost has been expected. The new topology named as a low-side-drive Quasi-Z-source boost converter (LQZC) consists of a flying capacitor (CF), the QZ, two diodes and a N-channel switch. About 1/5 reduction of the output ripple was verified by the PSIM simulation when the input voltage is 48V at a duty ratio of 0.1.

【 授权许可】

CC BY