Cost-Effective Sustain Driver Employing a New Four-Quadrant Switch Cell for AC Plasma Display

Abstract

A new energy-recovery circuit (ERC) for the Plasma Display Panel (PDP) using a switched transformer is proposed. The proposed ERC is very cost effective due to the reduction of device count and circuit complexity such as high-side gate drivers and diodes in the resonant path. Also, the leakage inductances of the transformers are used as resonant inductors for soft-switching operation of the main switches. The operation and performance of the proposed energy; recovery circuit were validated through waveform and power-efficiency measurement tests with prototype hardware in 200kHz switching-frequency(1).