CONTROLLED CHARGE PUMP ARRANGEMENT AND METHOD FOR CONTROLLING A CLOCKED CHARGE PUMP

摘要

A controlled charge pump (2) comprises a clock operated charge pump (20) having an output terminal (12) to provide an output voltage (Vo). A first sub-circuit (50) is coupled to the output terminal (12) of the clocked operated charge pump (20) and adapted to provide a first control signal in response to a comparison of the output voltage (Vo) with a first reference signal (Vref). A second sub-circuit (10, 40) is coupled to the clocked operated charge pump (20) and provides a second control signal in response to a comparison of a switch current within the clocked operated charge pump with a second reference signal (Iref). A clock skip controller (30) is adapted to control the mode of operation of the clocked operated charge pump (20) in response to that first and second control signals.