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Low cost and high efficiency PC power supply design to meet 80 plus requirement

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1 Author(s)
Liang, S.-A. ; Tech. Dev. Dept., FSP Technol. Inc., Taoyuan

In this paper, the soft-switching LLC half-bridge resonant converter with frequency control is proposed and used in desktop PC power supply applications. The new proposed simple structure of PC power supply with multi-output resonant converter has the features of frequency modulation operation with fixed duty cycle, zero voltage switching (ZVS), and low voltage stress in the active switches and output diodes. Moreover, it can achieve high power density, high efficiency, low switching losses and low component counts, which make the PC power supply operation to meet 80 plus requirement and cost effective. In the paper, the new PC topology is presented, and a specific example for PC 350 W application is designed and implemented to verify its feasibility.

Published in:

Industrial Technology, 2008. ICIT 2008. IEEE International Conference on

Date of Conference:

21-24 April 2008