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http://dx.doi.org/10.6113/TKPE.2015.20.3.262

AC-DC Converter using the PFC Inductor and LLC Resonant Transformer with an Integrated Magnetic Core  

Noh, Young-Jae (Hansol Technics)
Kang, Cheol-Ha (Electrical & Electronics Engineering, Jeonju University)
Saran, Meas (National Polytechnic Institute of Cambodia)
Kim, Eun-Soo (Electrical & Electronics Engineering, Jeonju University)
Won, Jong-Seob (Mechanical and Automotive Engineering, Jeonju University)
Kim, Dong-Hee (LG Innotek Components R&D Center)
Lee, Young-Soo (LG Innotek Components R&D Center)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.20, no.3, 2015 , pp. 262-272 More about this Journal
Abstract
An integrated two-in-one transformer applicable to PSUs for a 120 W LED TV is proposed. This transformer comprises a PFC inductor and an LLC transformer placed and integrated on an E-I-E type magnetic core. Performance is evaluated by observing the coupling coefficients of the proposed two-in-one transformer under various air gap topologies. Among the topologies studied, an integrated transformer with centered air gap shows stable operational characteristics with a minimized mutual coupling (interference). Furthermore, applicability of the proposed integrated transformer to PSUs for a 120 W LED TV is studied from the viewpoint of integrating different magnetic components into one core, resulting to low weight, low cost, and high power density.
Keywords
Integrated magnetic core; LLC resonant converter; PFC Inductor; AC-DC Converter;
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