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http://dx.doi.org/10.6113/TKPE.2015.20.5.437

An Integrated Transformer-based LED Power Supply with Wide-Output-Voltage Control  

Kang, Cheol-Ha (Daewoo Electronic Components. Co.Ltd.)
Ju, Jong-Seong (Electrical & Electronics Engineering, Jeonju University)
Kim, Eun-Soo (Electrical & Electronics Engineering, Jeonju University)
Won, Jong-Seob (Mechanical and Automotive Engineering, Jeonju University)
Lee, Young-Soo (LG Innotek Components R&D Center)
Kim, Dong-Hee (LG Innotek Components R&D Center)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.20, no.5, 2015 , pp. 437-447 More about this Journal
Abstract
In this paper, implementation of an integrated transformer applicable to power supply units (PSUs) for a 150-W LED with a wide range of output voltage is presented. The transformer is comprised of a PFC inductor and an LLC resonant transformer, each of which is placed and integrated on an E-I-E-type magnetic core. Integrated transformers with two different air gap topologies (i.e., the side and center gap topologies) are considered in the design phase to investigate their applicability. The design consideration on the LLC resonant converter used for the wide-output-voltage control ranges is described, and the overall performance of the proposed system is verified through realization of it onto a 150-W LED PSU board.
Keywords
Integrated transformer; LLC resonant converter; CRM PFC converter; LED PSU;
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Times Cited By KSCI : 4  (Citation Analysis)
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