Title :
Performance comparison between buck and boost CRM PFC converter
Author :
Yang, Jianyou ; Zhang, Junming ; Wu, Xinke ; Qian, Zhaoming ; Xu, Ming
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
This paper presents a detailed performance comparison (including efficiency, EMC performance and component electrical stress) between boost and buck type PFC under critical conduction mode (CRM). In universal input (90-265Vac) applications, the CRM buck PFC has around 1% higher efficiency compared to its counterpart at low-line (90Vac) condition. Due to the low voltage swing of switch, buck PFC has a better CM EMI performance than boost PFC. It seems that the buck PFC is more attractive in low power applications which only need to meet the IEC61000-3-2 Class D standard based on the comparison. The experimental results from two 100-W prototypes are also presented for side by side comparison.
Keywords :
IEC standards; electromagnetic compatibility; performance evaluation; power convertors; power factor correction; CRM PFC converter; EMC performance; IEC 61000-3-2 class D standard; boost converter; buck converter; component electrical stress; critical conduction mode; power 100 W; voltage 90 V to 265 V; Converters; Current measurement; Noise; Power harmonic filters; Stress; Switches; Voltage measurement; boost PFC; buck PFC; critical conduction mode (CRM); performance comparison;
Conference_Titel :
Control and Modeling for Power Electronics (COMPEL), 2010 IEEE 12th Workshop on
Conference_Location :
Boulder, CO
Print_ISBN :
978-1-4244-7462-2
Electronic_ISBN :
978-1-4244-7461-5
DOI :
10.1109/COMPEL.2010.5562437
