Patent ID: 6847250
Filing Date: 2005-01-25
Classification: H02M

Abstract:
1. A pumping circuit, comprising: a first pumping block for pumping an input voltage, said first pumping block being pumped according to only a first clock signal and a second clock signal; a first latch for latching and outputting a first output of the first pumping block according to a control signal; a second pumping block for pumping the first output of the first pumping block, said second pumping block being selectively pumped according to a third clock signal and a fourth clock signal generated by logically with a logic combiner combining the control signal with the first clock signal and the second clock signal, respectively; a second latch for latching and outputting a second output of the second pumping block according to the control signal; and a switching circuit for selectively outputting the outputs of the first and second latches according to the control signal.