A comparison study of boost and buck-boost power factor corrector for ultra-wide input voltage range applications

Sheng Yang Yu, Hung-Chi Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Due to the potential need for ultra-wide input voltage range power factor correction (PFC) circuit, one may consider Buck-boost converter as a PFC circuit (PFC Buck-boost) instead of Boost converter (PFC Boost). The voltage step-up/down freedom of Buck-boost converter allows a lower output voltage and smaller duty cycle compared to Boost converter. In addition, indirect input/output path limits the startup inrush current of PFC Buck-boost. Unlike PFC Boost, PFC Buck-boost doesn't need an inrush current limiting circuit, which allows a lower cost PFC circuit by applying Buck-boost converter. This paper conducts a comparison study of PFC Boost and PFC Buck-boost for a two stage system (PFC stage in cascade with an isolated DC-DC converter). Transient mode PFC is selected in this study for low power applications. Two 100W power supply prototypes are made for this comparison. The results show that PFC Buck-boost is able to provide a higher efficiency than PFC Boost under low input voltage with fewer power stage circuit components.

Original languageEnglish
Title of host publication2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2719-2726
Number of pages8
ISBN (Electronic)9781479956982
DOIs
StatePublished - 11 Nov 2014

Publication series

Name2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014

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    Yu, S. Y., & Chen, H-C. (2014). A comparison study of boost and buck-boost power factor corrector for ultra-wide input voltage range applications. In 2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014 (pp. 2719-2726). [6953766] (2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2014.6953766