NDLI: Analysis of multi-phase LLC resonant converters

Content Provider	IEEE Xplore Digital Library
Author	Orietti, E. Mattavelli, P. Spiazzi, G. Adragna, C. Gattavari, G.
Copyright Year	2009
Description	Author affiliation: Dept. of Technology and Management of Industrial Systems - University of Padova, Stradella S. Nicola 3, 36100 Vicenza, Italy (Mattavelli, P.) \|\| ST Microelectronics, via C. Olivetti, 20041 Agrate Brianza (MI), Italy (Adragna, C.; Gattavari, G.) \|\| Dept. of Information Engineering - University of Padova, Via Gradenigo 6/b, 35131 Padova, Italy (Orietti, E.; Spiazzi, G.)
Abstract	In this paper a topology for multi-phase interleaved LLC resonant converter is presented. The proposed solution, based on three LLC modules with transformer primary windings star connection allows to drastically reduce the output current ripple and consequently to minimize the output filter capacitor size. Differently from other multi-phase solutions, that are greatly susceptible to resonant component mismatch and consequently can be affected by a considerable current imbalance among modules, the proposed topology exhibits an inherent balancing capability. Small-signal analysis is presented and the possibility to turn-off one or two modules (phase shedding) at reduced output current levels is discussed, highlighting the trade-off between converter efficiency and output capacitor current ripple reduction. Measurements on a prototype will be included in the paper as validation of assertions and proposals.
Starting Page	464
Ending Page	471
File Size	1151308
Page Count	8
File Format	PDF
ISBN	9781424433698
ISSN	21758603
DOI	10.1109/COBEP.2009.5347673
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-27
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switched-mode power supply Switching converters Filters Technology management LLC resonant converter Capacitors Prototypes Magnetic resonance Multi-phase interleaved converters Topology Proposals Information analysis
Content Type	Text
Resource Type	Article

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