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Design considerations of a high efficiency ZVS buck AC-DC converter with constant on-time control

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4 Author(s)
Jianyou Yang ; Zhejiang Univ., Hangzhou, China ; Xinke Wu ; Junming Zhang ; Zhaoming Qian

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.

Published in:
Telecommunications Energy Conference (INTELEC), 32nd International

Date of Conference: 6-10 June 2010

Page(s):
1 - 5
E-ISBN :
978-1-4244-3384-1
Print ISBN:
978-1-4244-3383-4
Conference Location :
Orlando, FL, USA
Digital Object Identifier :
10.1109/INTLEC.2010.5525720
Product Type:
Conference Publications

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