Patent ID: 6784650
Filing Date: 2004-08-31
Classification: G05F

Abstract:
A circuit configuration for generating a controllable output voltage, comprising:a voltage generator having input terminals receiving a supply voltage, an output terminal providing the controllable output voltage and, a control terminal controlling the controllable output voltage; a comparator having inputs receiving a reference signal and a comparator control signal derived from the controllable output voltage and an output connected to said control terminal of said voltage generator; supply terminals for receiving the supply voltage to be forwarded to said voltage generator; transistors having control terminals and controlled paths receiving the supply voltage to be forwarded to said voltage generator, a first of said transistors connected between a first of said supply terminals and one of said input terminals of said voltage generator, a second of said transistors connected between a second of said supply terminals and another of said input terminals of said voltage generator; a logic device connected to said control terminals of said transistors and outputting a transistor control signal for driving said transistors; and a signal path connected between said output terminal of said voltage generator and said input of said comparator receiving the comparator control signal, said signal path having a switching network connected to said comparator and receiving at least a first control signal and a second control signal, a level of the comparator control signal derived from the controllable output voltage being dependent on the first and second control signals.