Patent ID: 8026755

Claim:
A charge pump, comprising: a signal output module, adapted to output a first output signal with a swing of 0 to 2×V IN ; and a charge storage module, adapted to take the first output signal as a triggering signal to generate two states, wherein one state is to charge one plate of a capacitor by an input voltage V IN , and the other state is to provide a voltage higher than 0 volt to the other plate of the capacitor, wherein the signal output module comprises: a first signal generating unit, adapted to generate a first oscillation signal with a swing of input voltage V IN to 2×V IN and a second oscillation signal with a swing of 0 to V IN and a phase the same as that of the first oscillation signal; and a second signal generating unit, adapted to take the first oscillation signal and the second oscillation signal as triggering signals, convert the input voltage to a first output signal with a swing of 0 to 2×V IN and output the first output signal, wherein the phases of the first output signal and the first oscillation signal are the same.