Patent ID: 7319626
Filing Date: 2008-01-15
Classification: H02M

Abstract:
1. A high voltage generating circuit comprising: a high-voltage level detector for detecting a level of high voltage to generate a high-voltage level detection signal; a control signal generator for generating a precharge control signal and first and second pumping control signals in response to the high-voltage level detection signal; and a high voltage generator including a first pumper and a second pumper, the first pumper including first and second capacitors, pumping a first output node by serially connecting the first and second capacitors in response to the first pumping control signal, and allowing charges to be shared between the first output node and a second output node, the second pumper including third and fourth capacitors, pumping the second output node by serially connecting the third and fourth capacitors in response to the second pumping control signal, and allowing charges to be shared between the second output node and a high voltage generating terminal, the high voltage generator for connecting the first, second, third, and fourth capacitors between a first precharge voltage level and a second precharge voltage level in response to the precharge control signal.