Patent ID: 8179113

Claim:
A method for DC/DC conversion, comprising the steps of operating in a Boost mode of operation or in a Buck-Boost mode of operation; switching from the Boost mode of operation to the Buck-Boost mode of operation, if a desired value of an output voltage which is generated from a supply voltage by the DC/DC conversion is smaller than a first reference voltage; switching from the Buck-Boost mode of operation to the Boost mode of operation, if the desired value is larger than a second reference voltage; generating, by a clock circuit, a clock signal having a cycle time, the Buck-Boost mode of operation having four switching phases, a sum of durations of the four switching phases being the cycle time which is constant; and providing, by first and second delay circuits, first and second respective delays, the first delay setting a second predetermined duration of a first switching phase of the four switching phases, and the second delay setting a first predetermined duration of a third switching phase of the four switching phases.