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http://dx.doi.org/10.6113/TKPE.2012.17.6.507

Two Stage High Step-Up Converter for Low Input Voltage and High Current Applications  

Noh, Young-Jae (Electrical & Electronics Engineering, Jeonju University)
Xu, Han (Electrical & Electronics Engineering, Jeonju University)
Kang, Cheol-Ha (Electrical & Electronics Engineering, Jeonju University)
Kim, Eun-Soo (Electrical & Electronics Engineering, Jeonju University)
Jang, Sang-Ho (LG Innotek Components R&D Center)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.17, no.6, 2012 , pp. 507-515 More about this Journal
Abstract
DC-DC converter which composed of LLC resonant converter, operated by fixed switching frequency with fixed duty cycle (50%), and flyback converter to provide constant output voltage($400V_{DC}$) with variation of input voltage($30-60V_{DC}$) is proposed in this paper. To obtain constant output voltage($400V_{DC}$), flyback converter is not operated in case of above the maximum input voltage($60V_{DC}$) and operated as the input voltage decreases to below 60VDC. Therefore, flyback converter can be designed to the 50% power rating of the maximum power in the proposed DC-DC converter. Operation modes and voltage gain characteristics were analyzed and a 360W prototype converter was tested to verify the proposed converter.
Keywords
wide input voltage variable ranges; LLC resonant converter; flyback converter; planar transformer;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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