A novel resonant LLC soft-switching buck converter

Author

Jabbari, Masoud ; Kazemi, Hamed ; Hematian, Nahid ; Shahgholian, Ghazanfar

Author_Institution

Electr. Eng. Dept., Islamic Azad Univ., Isfahan, Iran

fYear

2014

fDate

1-4 June 2014

Firstpage

370

Lastpage

374

Abstract

A new LLC resonant DC-DC buck converter is presented. The employed multi-resonant tank provides soft-switching conditions for all semiconductor devices independent from the operating voltages and the load current. The proposed converter enjoys useful advantages such as low element count, unconditional soft switching operation, self short-circuit protection, high efficiency and low EMI. Circuit analysis and important relations are presented in this paper. Experimental results from a 60W laboratory prototype confirm the presented theoretical analysis.

Keywords

DC-DC power convertors; LC circuits; electromagnetic interference; resonant power convertors; switching convertors; zero current switching; zero voltage switching; EMI; LLC resonant DC-DC buck converter; circuit analysis; electromagnetic interference; load current; multiresonant tank; power 60 W; resonant LLC soft-switching buck converter; self short-circuit protection; semiconductor devices; soft-switching conditions; Capacitors; Electrical engineering; Prototypes; Resonant frequency; Switches; Zero current switching; Zero voltage switching; DC-DC converter; ZCS; buck converter; power supply; soft-switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics (ISIE), 2014 IEEE 23rd International Symposium on

Conference_Location

Istanbul

Type

conf

DOI

10.1109/ISIE.2014.6864641

Filename

6864641