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

fYear

2010

fDate

28-30 June 2010

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/COMPEL.2010.5562437

Filename

5562437