Patent ID: 8618867

Claim:
A controlled charge pump arrangement, comprising: a clocked operated charge pump having an output terminal to provide an output voltage; a first sub-circuit coupled to the output terminal of the clocked operated charge pump and adapted to provide a first control signal in response to a comparison of the output voltage with a first reference signal; a second sub-circuit coupled to the clocked operated charge pump and adapted to provide a second control signal in response to a comparison of a signal with a second reference signal, said signal being different from the output voltage and derived by a switch current within the clocked operated charge pump; and a clock skip controller adapted to control a mode of operation of the clocked operated charge pump in response to said first and second control signals, wherein the second sub-circuit comprises a current mirror, its current mirror transistor coupled to the charge pump switch to mirror a current through the switch and an equalizing network, said equalizing network comprising a differential amplifier connected to said charge pump switch and to a sensing transistor, said charge pump switch and sensing transistor receiving the same switching signal.