Switched-mode direct current power supply circuit with overcurrent protection, includes saturable inductance with current-limiting control circuit

摘要

An inductance (L1) is connected in series between the electronic switching unit (3) and the output (c1). This inductance is also connected in series between a reference potential (c') of the output, and a free-running component (V2), which enables demagnetization of the inductance (L1) when the electronic switching unit (3) is in the off state. The control unit (1) is designed to limit operation of the electronic switching unit (3) during periodic on and off switching, such that the current does not exceed a given value during saturation of the inductance (L1) : An independent claim is included for the corresponding method of control.