Patent ID: 6909268
Filing Date: 2005-06-21
Classification: H02M

Abstract:
1. A current-mode switching regulator, comprising: a first terminal having a first supply potential; a second terminal having a second supply potential; at least one controllable semiconductor switch having a load path disposed between said first terminal and said second terminal; an impedance connected to said load path; a voltage divider connected in series with said impedance at a tap, at said tap an output potential can be tapped off; an outer control loop for voltage regulation; an inner control loop for load current regulation, said inner control loop coupled to said outer control loop and driving said controllable semiconductor switch according to a load current and the output potential; an integrator coupled to said impedance and receiving a voltage dropped across said impedance, said integrator integrating the voltage with respect to time resulting in a control signal mapping the load current, the control signal fed as a controlled variable to said inner control loop; and means for adapting a gain of said integrator and having at least one transconductance whose value in a settled state is inversely proportional to the output potential.