采用同步整流技术的超薄高效电源设计  

Design of ultra-thin and high-efficiency power with synchronous rectification technology

作　　者：郝志燕[1] 鲍嘉明[1] 

机构地区：[1]北方工业大学信息工程学院微电子系,北京100144

出　　处：《电源技术》2012年第12期1896-1898,1933,共4页Chinese Journal of Power Sources

摘　　要：设计了一款用于32寸液晶电视的150 W超薄高效电源,提供三路输出,分别给待机电源提供5 V电压,音响提供12 V电压和LCD液晶屏提供24 V电压。在半桥LLC串联谐振转换器中,传统的同步整流技术采用的是整流二极管,通过采用整流MOSFET来减小输出的损耗,从而提高了电源效率。通过采用卧式骨架和细长型电解电容,使整个电源的厚度仅为13 mm,长和宽都为15 cm。A 150 W ultra thin and high efficiency power was designed for 32 inch LCD TV, providing three outputs respectively-5 V voltage for standby power, 12 V for sound speaker and 24 V for liquid crystal display. In the half-bridge LLC series resonant converters, rectifier diode was used in traditional synchronous rectification. In this paper, rectifier MOSFET was used to reduce the loss of rectifier output to improve the power efficiency. Through the use of horizontal frame and slim electrolytic capacitor, the thickness of power was only 13 mm, and both length and width were 15 cm.

关 键 词：LLC谐振 同步整流技术 超薄 

分 类 号：TM131.4[电气工程—电工理论与新技术]