A novel energy-recovery circuit for a plasma display panel

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 C_p to zero employs the slow falling time and is composed of an LC resonant circuit biased by 0.5 V_s, which reduces the conduction loss and a voltage drop across a parasitic resistance, and decreases a current stress. The ERC-X charging C_p to V_s 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 V_s 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