Title :
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
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;
Conference_Titel :
Power Electronics Specialists Conference, 2007. PESC 2007. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-0654-8
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2007.4342388
