Patent ID: 6222356
Filing Date: 2001-04-24
Classification: H02M

Abstract:
A current-mode switching regulator, comprising:a first regulating device for voltage regulation and a second regulating device for load current regulation, each of said first and second devices having a first input, a second input, and an output, and wherebysaid first input of said first regulating device is connected to receive a reference signal and said second input of said first regulating device is connected to receive an output signal of the current-mode switching regulator, as a regulated variable; andsaid output of said first regulating device is connected to said first input of said second regulating device;a power switch connected to said second regulating device and controlled by a control signal of said second regulating device, said power switch having a load path connected between a first supply potential and a second supply potential;a choke device connected in said load path of said power switch; andan integrator connected to said choke device and to said second regulating device, said integrator generating a regulating signal by integrating, with respect to time, an inductor voltage dropping across said choke device, said regulating signal mirroring a load current and being coupled, as regulated variable, into said second input of said second regulating device.