Patent ID: 7504779

Claim:
A plasma display panel sustain driver that drives a plasma display panel, comprising: a power recovery capacitor that provides a predetermined voltage to the plasma display panel; a sustain switching unit that is connected to the plasma display panel and sustains or discharges the voltage charged in the plasma display panel; a first power recovery unit connected between the power recovery capacitor and the sustain switching unit, the first power recovery unit forming a resonant circuit together with the plasma display panel to provide a voltage stored in the power recovery capacitor to the plasma display panel through the sustain switching unit when the sustain switching unit is deactivated, the first power recovery unit blocking an output current of the sustain switching unit when the sustain switching unit is activated; and a second power recovery unit connected between the power recovery capacitor and the sustain switching unit, the second power recovery unit forming a resonant circuit together with the plasma display panel to discharge a voltage stored in the plasma display panel to the power recovery capacitor when the sustain switching unit is deactivated, the second power recovery unit blocking a current path to the sustain switching unit when the sustain switching unit is activated, wherein the first power recovery unit comprises: a first MOS transistor connected between the power recovery capacitor and a first node; a first inductor connected between the first node and a second node; a first diode connected between the first node and a ground voltage; a second diode connected between the second node and the ground voltage; and a third diode connected between the second node and the sustain switching unit.