Series resonant sustain driver and reset circuit composition using a single voltage source for an efficient plasma display

Abstract

A novel sustain driver employing an energy recovery function and a useful reset circuit composition are proposed for efficient driving of a plasma display panel. The proposed sustain driver uses a series resonance between an external inductor and a panel to recover the energy dissipated by a capacitive displacement current of PDP. It consists of four switching devices, an inductor, and external capacitors, which supply sustain voltage sources. Although the amplitude of an input voltage source is twice as high as that of conventional sustain drivers, average voltage stress imposed on power switching devices is nearly same in their values. Moreover, the input voltage source can be directly applied for the use of a reset voltage source. Owing to this scheme, the proposed sustain driver and the embedded reset circuit have a simple configuration. The operational principle and design example are given with theoretical analyses. The validity of the proposed drive system is verified through computer-aided simulations and experiments using a prototype equipped with a 7.5-in.-diagonal AC plasma display panel.