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Single-Stage Quasi-Resonant Flyback Converter for a Cost-Effective PDP Sustain Power Module

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3 Author(s)
Jung-Min Kwon ; Hanbat Nat. Univ., Daejeon, South Korea ; Woo-Young Choi ; Bong-Hwan Kwon

A single-stage quasi-resonant flyback converter is proposed for a cost-effective plasma display panel (PDP) sustain power module. The proposed converter operates at the boundary of the continuous- and discontinuous-conduction modes to reduce the switching loss of the primary switch. The bulk capacitor voltage can be independent of the output load and maintained within a practical range for the universal line input. By integrating two power conversion stages into one, the proposed converter provides a simple structure and high efficiency for the PDP sustain power module. The operational principle and theoretical analysis are presented. A prototype converter was built and tested for a 32-in PDP, which requires 150-W (180-V/0.83-A) sustain power. The experimental results verify the feasibility of the proposed scheme.

Published in:

Industrial Electronics, IEEE Transactions on  (Volume:58 ,  Issue: 6 )