BIDIRECTIONAL HIGH VOLTAGE SWITCHING DEVICE AND ENERGY RECOVERY CIRCUIT HAVING SAME

PROBLEM TO BE SOLVED: To provide a bi-directional high voltage switching device and an energy recovery circuit having the same. SOLUTION: This bi-directional high voltage switching device includes an n-channel double diffused MOS transistor and a p-channel double diffused MOS transistor, each conducting current bi-directionally, and an energy recovery circuit that reduces the amount of energy consumed when charging or discharging a load capacitor by efficiently driving the bi-directional high voltage switching device. In the bi-directional high voltage switching device, the n-channel symmetric double diffused MOS transistor and the p-channel symmetric double diffused MOS transistor are connected to each other in parallel, and the energy recovery circuit includes a pull-up device, a pull-down device, an energy recovery capacitor, and a bi-directional high voltage switching device. Thereby, the amount of energy consumed when charging or discharging a load capacitor are reduced. COPYRIGHT: (C)2005,JPO&NCIPI