DC-DC CONVERTER AND ELECTRICAL CIRCUIT ARRANGEMENT FOR INPUT CIRCUIT PROTECTION OF A DC-DC CONVERTER

摘要

The invention relates to an electrical circuit arrangement for input protection circuit of a switching power supply, with a voltage applied to the mains voltage overvoltage protection circuit to which a current-compensated choke coil is connected as a suppression element, which is connected to a rectifier circuit, which has an energy storage on the output side.;By circuitry modifications such as the use of two varistors as overvoltage protection and by the use of suitable circuit elements such as silicon diodes as rectifier elements and ceramic capacitors as energy storage, the input protection circuit is designed so that the requirements that an extended input voltage range provides to a protective circuit, are met ,;Furthermore, the invention relates to a switching power supply with an inventive electrical circuit arrangement for input protection circuit.