1MHz High Efficiency LLC Resonant Converters with Synchronous Rectifier

Author

Fu, Dianbo ; Lu, Bing ; Lee, Fred C.

Author_Institution

Virginia Polytech. Inst. & State Univ., Blacksburg

fYear

2007

Firstpage

2404

Lastpage

2410

Abstract

This paper proposes a novel synchronous rectifier driving scheme for resonant converters. An LLC resonant converter with proposed synchronous rectification is designed and analyzed. It is a high efficiency, high power density solution for future frond end converters. Hold up time extension capability is achieved for designed LLC resonant converter without sacrificing the efficiency for nominal condition. 1kW, 1MHz LLC resonant converter with proposed SR is built to demonstrate its advantages (size and efficiency) over the diode rectification and PWM converter. Overall 95.1% efficiency and 96W/in³ power density are achieved.

Keywords

DC-DC power convertors; PWM power convertors; rectifying circuits; resonant power convertors; DC-DC converters; LLC resonant converters; PWM converter; diode rectification; efficiency 95.1 percent; frequency 1 MHz; frond end converters; hold up time extension capability; power 1 kW; synchronous rectifier driving scheme; Capacitors; DC-DC power converters; Pulse width modulation converters; Rectifiers; Resonance; Schottky diodes; Strontium; Switching converters; Virtual reality; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2007. PESC 2007. IEEE

Conference_Location

Orlando, FL

ISSN

0275-9306

Print_ISBN

978-1-4244-0654-8

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2007.4342388

Filename

4342388