Patent ID: 8743567

Claim:
A voltage converter, comprising: an input for receiving an input voltage; a first output for providing a first output voltage; a second output for providing a second output voltage, wherein the first output voltage and the second output voltage have opposite polarities; and a switching arrangement that is configured to provide energy to an inductor in a charging phase of operation, and to provide energy from the inductor to the first output and, via a flying capacitor, to the second output in a discharging phase of operation, wherein the switching arrangement comprises a first switch and an additional switch, wherein the input of the voltage converter is coupled to a first terminal of the inductor, a second terminal of the inductor is coupled via the first switch to a reference potential terminal and is connected to a first electrode of the flying capacitor, and a second electrode of the flying capacitor is coupled via the additional switch to the reference potential terminal, and wherein a first duration of the charging phase of operation is controlled such that a difference between a first predetermined value and a sum of the absolute values of the first output voltage and of the second output voltage is minimized.