Regulator system for controlling output voltage and method of controlling the same

A method for controlling a regulator system for controlling an output voltage, said regulator system including a regulator, enabled in response to an enable signal, for converting a level of an input signal into a predetermined value and providing a first output signal, and a smoother for smoothing said first output signal from said regulator and providing the smoothed signal as a second output signal, said method comprising the steps of:

• a) generating an initial version of said enable signal to control an enable period of said regulator so that said second output signal has a target level;
• b) checking a feedback level of said second output signal associated with said initial version of said enable signal;
• and
• c) adjusting an enable active period of said initial version of said enable signal to generate a new version of said enable signal if said feedback level of said second output signal associated with said initial version of said enable signal is different from said target level.