Patent ID: 7342389

Claim:
A voltage converter comprising: a first capacitor having a first terminal and a second terminal; a first switch having a first terminal coupled to the second terminal of the first capacitor and a second terminal for receiving an input voltage; a second switch having a first terminal coupled to the first terminal of the first capacitor and a second terminal for providing an output voltage; a third switch having a first terminal coupled to the second terminal of the first capacitor and a second terminal coupled to a first reference voltage; a programmable current source coupled to the first terminal of the first capacitor; a feedback circuit coupled to the second terminal of the second switch; and a controller coupled to the feedback circuit, wherein during a first time period the third switch is closed, the first and second switches are open, and the programmable current source generates a programmed current into the first capacitor to create a first voltage, and during a second time period, the third switch is open, the first and second switches are closed, and the first voltage is increased by an input voltage, and wherein the feedback circuit generates a feedback signal, and in accordance therewith, the controller changes the programmed current generated by the programmable current source.