A novel energy-recovery circuit for a plasma display panel

Abstract

A novel energy-recovery circuit (ERC) for a plasma display panel (PDP) is proposed in this paper. Two different ERCs, ERC-Y and ERC-X, are used for both sides of the PDP, and the slow falling and fast rising times can be employed. The ERC-Y discharging Cp to zero employs the slow falling time and is composed of an LC resonant circuit biased by 0.5 Vs, which reduces the conduction loss and a voltage drop across a parasitic resistance, and decreases a current stress. The ERC-X charging Cp to Vs employs the fast rising time and is composed of an LC resonant circuit biased by V s, which ensures the stable light emission, fully charges C p to Vs regardless of a parasitic resistance, and compensates for a large gas-discharge current. Therefore, it features the zero voltage switching (ZVS), low electromagnetic interference (EMI), low current stress, no severe voltage notch, and high energy-recovery capability. The operation of the proposed circuit and design considerations are discussed in detail, and experimental results are presented to show the validity of the proposed circuit