Hybrid Switched-Inductor Buck PFC Converter for High-Efficiency LED Drivers

Yu Chen Liu; Fu Ciao Syu; Hsin Che Hsieh; Katherine A. Kim; Huang Jen Chiu

doi:10.1109/TCSII.2017.2787554

Hybrid Switched-Inductor Buck PFC Converter for High-Efficiency LED Drivers

Yu Chen Liu
, Fu Ciao Syu
, Hsin Che Hsieh
, Katherine A. Kim
, Huang Jen Chiu

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

A hybrid switched-inductor (HS-L) buck topology with a coupled inductor is utilized for power factor correction using clamped current mode control to implement a high-efficiency non-isolated LED driver. Compared to the conventional buck topology, the HS-L buck has lower losses attributed to lower conduction losses in the inductor and diode, and a wider discontinuous conduction mode range. Experimental results verify higher efficiency using the HS-L buck compared to the conventional buck topology, achieving efficiency above 92% and power factor above 0.9 over the universal input range.

Original language	English
Article number	8240718
Pages (from-to)	1069-1073
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	65
Issue number	8
DOIs	https://doi.org/10.1109/TCSII.2017.2787554
State	Published - Aug 2018

Bibliographical note

Publisher Copyright:
© 2004-2012 IEEE.

Keywords

LED driver
Power factor correction (PFC)
clamped current mode control
hybrid switched-inductor buck

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10.1109/TCSII.2017.2787554

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title = "Hybrid Switched-Inductor Buck PFC Converter for High-Efficiency LED Drivers",

abstract = "A hybrid switched-inductor (HS-L) buck topology with a coupled inductor is utilized for power factor correction using clamped current mode control to implement a high-efficiency non-isolated LED driver. Compared to the conventional buck topology, the HS-L buck has lower losses attributed to lower conduction losses in the inductor and diode, and a wider discontinuous conduction mode range. Experimental results verify higher efficiency using the HS-L buck compared to the conventional buck topology, achieving efficiency above 92\% and power factor above 0.9 over the universal input range.",

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AB - A hybrid switched-inductor (HS-L) buck topology with a coupled inductor is utilized for power factor correction using clamped current mode control to implement a high-efficiency non-isolated LED driver. Compared to the conventional buck topology, the HS-L buck has lower losses attributed to lower conduction losses in the inductor and diode, and a wider discontinuous conduction mode range. Experimental results verify higher efficiency using the HS-L buck compared to the conventional buck topology, achieving efficiency above 92% and power factor above 0.9 over the universal input range.

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Hybrid Switched-Inductor Buck PFC Converter for High-Efficiency LED Drivers

Abstract

Bibliographical note

Keywords

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