Patent ID: 7209099

Claim:
A sustain-discharge driving device of a high-efficiency plasma display panel (PDP), the sustain-discharge driving device comprising: a sustain-discharge switching unit, which connects charging and discharging paths of an energy recovery unit to the PDP, according to a sustain-discharge sequence; and the energy recovery unit, which, according to an energy recovery sequence, discharges energy of the PDP to an energy accumulation device through a resonance path while in dis-charging mode, charges the PDP with the energy accumulated in the energy accumulation device through a resonance path while in charging mode, and forms a closed circuit in which a voltage difference between both ends of an inductor is greater than a predetermined value, so as to eliminate a free-wheeling current, which is generated in the inductor of the resonance path due to a parasitic effect, during mode transition; wherein the charging mode comprises a first charging mode and a second charging mode the discharging mode comprises a first discharging mode and a second discharging mode, and different resonance paths are formed in the first charging mode and the second charging mode and in the first discharging mode and the second discharging mode.