A New PWM-Controlled Quasi-Resonant Converter for a High Efficiency PDP Sustaining Power Module

Woo-Jin Lee; Seong-Wook Choi; Chong-Eun Kim; Gun-Woo Moon

A New PWM-Controlled Quasi-Resonant Converter for a High Efficiency PDP Sustaining Power Module

Vol. 7, No. 1, pp. 28-37, Jan. 2007

10.6113/JPE.2007.7.1.28

Pulse width modulation

Quasi-resonant converter

PDP

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Abstract

A new PWM-controlled quasi-resonant converter for a high efficiency PDP sustaining power module is proposed in this paper. The load regulation of the proposed converter can be achieved by controlling the ripple of the resonant voltage across the resonant capacitor with a bi-directional auxiliary circuit, while the main switches are operating at a fixed duty ratio and fixed switching frequency. Hence, the waveforms of the currents can be expected to be optimized from the view-point of conduction loss. Furthermore, the proposed converter has good ZVS capability, simple control circuits, no high voltage ringing problem of rectifier diodes, no DC offset of the magnetizing current and low voltage stresses of power switches. In this paper, operational principles, features of the proposed converter, and analysis and design considerations are presented. Experimental results demonstrate that the output voltage can be controlled well by the auxiliary circuit using the PWM method.

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Cite this article

[IEEE Style]

W. Lee, S. Choi, C. Kim, G. Moon, "A New PWM-Controlled Quasi-Resonant Converter for a High Efficiency PDP Sustaining Power Module," Journal of Power Electronics, vol. 7, no. 1, pp. 28-37, 2007. DOI: 10.6113/JPE.2007.7.1.28.

[ACM Style]

Woo-Jin Lee, Seong-Wook Choi, Chong-Eun Kim, and Gun-Woo Moon. 2007. A New PWM-Controlled Quasi-Resonant Converter for a High Efficiency PDP Sustaining Power Module. Journal of Power Electronics, 7, 1, (2007), 28-37. DOI: 10.6113/JPE.2007.7.1.28.