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Effect of Resonant Capacitance and Inductance on Peak Capacitor Voltage and Inductor Current in SLR Converter

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With an ever-increasing number of portable electronic devices being used worldwide, increasing attention has been drawn to efficiently charging and powering these devices. While conventional PWM-based topologies such as buck and flyback converters are ubiquitous in consumer electronics, the desire for increased efficiency, larger power output, and smaller size has caused engineers to look at other power supply topologies. One topology that can satisfy all of these desires is the Series-Loaded Resonant (SLR) converter. This topology uses a resonant tank to facilitate soft switching, resulting in very low switching losses, higher efficiency, higher switching frequencies, and smaller system size. This study examines how changing the capacitance and inductance values of the resonant tank affects the peak capacitor voltage and the peak inductor current which further impacts the sizing of all other components, and thus the overall cost of the converter. By characterizing these parameters, designers can more easily optimize component selection to achieve appropriate cost-benefit of their converter design.
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Consumer Electronics; Power Supply; Resonant Converter; Soft Switching; Component Selection

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A. Ecklebe, A. Lindemann, and S. Schulz, Bidirectional Switch Commutation for a Matrix Converter Supplying a Series Resonant Load, IEEE Transactions on Power Electronics, Vol. 24 (Issue 5):1173-1181, May 2009.

H. Koizumi, Delta-sigma modulated Class D series resonant converter, IEEE Power Electronics Specialists Conference, pp. 257-262, Rhodes, June 2008.

M. McCarty, T. Taufik, A. Pratama, and M. Anwari, Efficiency Performance analysis of Series Loaded Resonant converter, IEEE Symposium on Industrial Electronics & Applications, Vol. 1, pp. 408-412, Kuala Lumpur, Malaysia, October 2009..

Y. Chuang, Y. Ke, H. Chuang, and H. Chen, Implementation and Analysis of an Improved Series-Loaded Resonant DC–DC Converter Operating Above Resonance for Battery Chargers, IEEE Transactions on Industry Applications, Vol. 45 (Issue 3):1052-1059, June 2009.

J. Kim, and G. Moon, A New LLC Series Resonant Converter with a Narrow Switching Frequency Variation and Reduced Conduction Losses, IEEE Transactions on Power Electronics, Vol. 29 (Issue 8):4278-4287, August 2014.

M. K. Kazimierczuk, and M. J. Mescher, Class D converter with half-wave regulated synchronous rectifier, Proceedings of Applied Power Electronics Conference and Exposition, pp. 1005-1011, Orlando, USA, February 1994.

M. K. Kazimierczuk, W. Chuyun Wu, and R. C. Cravens, Frequency-controlled series-resonant DC-DC converter with center-tapped synchronous rectifier, Proceedings of the 37th Midwest Symposium on Circuits and Systems, pp. 1245-1248, Lafayette, USA, August 1994.

L. Qu, G. Li, F. Xie, H. Li, and J. Du, Modeling, Simulation, and Analysis of the HV Snubber, IEEE Transactions on Plasma Science, Vol. PP (Issue 99):1, November 2014.

M. L. Sudheer, Susceptibility of offline SMPS to Common Mode transients, 10th International Conference on Electromagnetic Interference & Compatibility, pp. 87-92, November 2008.

F. Mihalic, and D. Kos, Reduced Conductive EMI in Switched-Mode DC–DC Power Converters Without EMI Filters: PWM Versus Randomized PWM, IEEE Transactions on Power Electronics, Vol. 21 (Issue 6):1783-1794, November 2006.

B. Singh, V. Verma, and V. Garg, Passive Hybrid Filter for Varying Rectifier Loads, Proceedings of the 10th International Conference on Power Electronics and Drives Systems, pp. 1306-1311, November 2005.

S. Moisseev, S. Sato, S. Hamada, and M. Nakaoka, Full bridge soft-switching phase-shifted PWM DC-DC converter using tapped inductor filter, Proceedings of the IEEE 34th Annual Power Electronics Specialist Conference, Vol. 4: pp. 1826-1831, June 2003.


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