Energy recovery circuit and driving method thereof

An energy recovery circuit, comprising:

• a panel capacitor;
• a source capacitor for recovering a voltage from the panel capacitor, and supplying the voltage charged to the source capacitor to the panel capacitor;
• a reference voltage supply unit;
• an inductor disposed between the source capacitor and the panel capacitor;
• a first switch disposed between the inductor and the source capacitor, for forming a charge path of the panel capacitor;
• a second switch disposed between the inductor and the reference voltage supply unit, for forming a discharge sustaining path of the panel capacitor;
• a third switch disposed between the inductor and the source capacitor, for forming a discharge path of the panel capacitor;
• and
• a fourth switch connected between the inductor and a base potential, for forming a path for sustaining the base potential of the panel capacitor,
• wherein the reference voltage supply unit supplies a rising pulse rising to a predetermined reference voltage to the panel capacitor and the source capacitor respectively at an initial time point in which the panel capacitor and the source capacitor are not charged with a voltage and supplies a reference voltage to the panel capacitor in a normal operation period.