Patent ID: 8599184
Filing Date: 2013-12-03
Classification: H02M

Abstract:
1. A charge pump comprising: a first converting unit configured to receive a first voltage in response to a first clock signal to generate a first pumping voltage, and the first converting unit configured to alternately output the first pumping voltage to a first terminal and a second terminal; and a second converting unit configured to receive the first pumping voltage through the first terminal or the second terminal in response to a second clock signal and a third clock signal respectively, to generate a second pumping voltage, and the second converting unit configured to provide the second pumping voltage to an output terminal, wherein the second converting unit is configured to provide the second pumping voltage to the output terminal for at least half of a period of one of the second clock signal and the third clock signal, and wherein the first, second, third clock signals are separate signals, and a frequency of the first clock signal is twice a frequency of the second clock signal, and the second clock signal and the third clock signal have opposite phases.