AC-PDP Sustain Driver using Bidirectional Switches

Abstract

-To minimize the cost and power consumption of PDP TV, a practical sustain circuit topology is presented with an address-and-display-period-separated driving scheme. The proposed sustain driver employs bidirectional switches to reduce the number of components. Operational principles and corresponding features are illustrated and compared with the conventional approach. The valuable contributions of the proposed high-performing sustainer has been proven by computer-aided simulations and experiments by using a prototype equipped with 7.5-inch diagonal panel operated at 200 kHz switching frequency.

A Study of Unidirectional Driving Circuit of Piezoelectric Device Considering Energy Recovery

“…To reduce the energy loss and the needed power supply capacity, energy recovery circuit is requested. For alternating voltage drive, a few kinds of energy recovery circuit were proposed, concentrated especially in the area of PDP drive [1,2]. The research of unidirectional voltage drive looks not enough for piezoelectric load.…”

“…Piezoelectric material is being used widely in various areas. Especially piezoelectric material used as mechanical actuators are operated using inverters which can apply positive or negative voltages to the piezoelectric loads [1][2][3][4]. Some loads need alternating voltage and some need unidirectional voltage.…”