Title :
Design considerations of a high efficiency ZVS buck AC-DC converter with constant on-time control
Author :
Yang, Jianyou ; Wu, Xinke ; Zhang, Junming ; Qian, Zhaoming
Author_Institution :
Zhejiang Univ., Hangzhou, China
Abstract :
In contrast to the conventional boost PFC converter, the buck AC-DC converter can achieve high efficiency in the entire universal input voltage range[1]. A critical conduction mode (CRM) ZVS buck converter with constant on-time control is proposed in this paper. The design methodology and criteria for high efficiency and low harmonics of the CRM buck AC-DC converter are presented. A 100-W prototype designed according to the proposed design criteria shows that the input current harmonics meet the IEC61000-3-2 Class D standard and the efficiency is higher than 0.965 during the universal input range.
Keywords :
AC-DC power converters; Buck converters; Circuits; Diodes; Inductors; Power harmonic filters; Reactive power; Switches; Voltage control; Zero voltage switching;
Conference_Titel :
Telecommunications Energy Conference (INTELEC), 32nd International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
978-1-4244-3383-4
Electronic_ISBN :
978-1-4244-3384-1
DOI :
10.1109/INTLEC.2010.5525720
