Patent ID: 8644040

Claim:
A power supply, comprising: a voltage source which is configured to provide a supply voltage; and at least one charge pump circuit (i) supplied by the voltage source, (ii) including a first charge pump capacitor and a second charge pump capacitor, and (iii) configured to generate an output voltage at an output thereof of the power supply, the at least one charge pump including alternating first and second clock states, wherein: in the first clock state, the first charge pump capacitor is disposed between the supply voltage and ground, and is charged to the supply voltage by the voltage source, and the second charge pump capacitor is coupled in series between the voltage source and the output of the charge pump circuit, and in the second clock state, the first charge pump capacitor and the second charge pump capacitor are connected in series such that a charged connection of the first charge pump capacitor in the first clock state is grounded, and the second charge pump capacitor is charged by the voltage source.