Circuit arrangement for controlling switched-mode power supply, has control signal generating unit generating current limiting signal for causing limitation of load current on steady load current and for outputting frequency control signal

摘要

The arrangement (2) has a load measuring unit (21) for measuring a load measuring variable (SL) proportional to a load current flowing through a load to a secondary winding. A threshold value unit (22) is provided for checking/verifying whether the measured load variable exceeds a threshold value. A control signal generating unit (23) generates a current limiting signal for causing a limitation of the load current on a maximum steady load current and for outputting a frequency control signal and the limiting signal to a control unit, when the measured load variable exceeds the threshold value. An independent claim is also included for a method for controlling a switched-mode power supply/switched network.