Title :
Characteristics of full resonant ZCS converter using a synchronous rectifier
Author :
Kato, Akmori ; Ueda, Akiteru ; Torii, Akihiro
Author_Institution :
Dept. of Electr. Eng., Aichi Inst. of Technol., Toyota, Japan
Abstract :
In order to improve the efficiency of DC/DC converters, a synchronous rectifier circuit using MOSFETs is used. Using the synchronous rectifier, the loss of the rectifier is decreased. However, the disadvantage of the circuit is that the efficiency is low at light load. In this paper, the synchronous rectifier circuit is applied to a zero-current-switched converter, and the way of controlling the signal given to the MOSFETs is examined to improve the efficiency at light load. When the output power is below 2.5 W the efficiency can be improved about 7 percent
Keywords :
DC-DC power convertors; losses; power MOSFET; rectifying circuits; resonant power convertors; switching circuits; 2.5 W; DC/DC converters; MOSFET; efficiency improvement; full resonant ZCS converter; rectifier loss; synchronous rectifier; zero-current-switched converter; Diodes; Inductors; Low voltage; MOSFETs; RLC circuits; Rectifiers; Resonance; Switches; Switching circuits; Zero current switching;
Conference_Titel :
Power Conversion Conference, 2002. PCC-Osaka 2002. Proceedings of the
Conference_Location :
Osaka
Print_ISBN :
0-7803-7156-9
DOI :
10.1109/PCC.2002.997588
