The invention relates to a system for generating an output voltage (Vout) from an input voltage (Vup), said system comprising:--regulation means (T1) for regulating said output voltage (Vout) to a target voltage level (Vcons), said regulation means (T1) comprising a control terminal intended to receive a regulation signal (SR) and an output terminal for delivering said output voltage (Vout),--first control means (COMP1) for delivering a first control signal (SC1) from a comparison between said regulation signal (SR) and a first reference signal (Vref1).