Patent ID: 7236046
Filing Date: 2007-06-26
Classification: H02M,H05B,Y02B

Abstract:
1. A charge pump comprising: a first input terminal configured to receive a first supply voltage; a second input terminal configured to receive a second supply voltage; an output terminal configured to provide an output voltage; a first capacitor; a second capacitor; and interconnection circuitry configured to couple the first capacitor and the second capacitor in a first configuration, a second configuration, and a third configuration during a first operational phase, a second operational phase, and a third operational phase, respectively, wherein the first and second capacitors are connected in series between the first and second input terminals in the first configuration, wherein the first capacitor is connected between the first input terminal and the output terminal, and the second capacitor is isolated from the output terminal in the second configuration, and wherein the first and second capacitors are connected in series between the first input terminal and the output terminal in the third configuration.