Step-down chopper circuit, inverter circuit arrangement and operating procedures

A step-down converter circuit according to the invention each includes a main branch between one of two input terminals and an an input side of two output ports, an input-side capacitor series circuit with at least two series-connected capacitors between the two major branches, an output side capacitor series circuit with at least two series-connected capacitors between the two major branches, between the and the output side capacitor series circuit arranged diode series circuit having at least two serially connected diodes between the two major branches, a center branch that connects without further connection to the input side and the output side of an intermediate node of the input side capacitor series circuit to an intermediate node of the diode series circuit and an intermediate node of the output side capacitor series circuit, depending on a storage inductor in the two main branches between the Di odenreihenschaltung and the output side capacitor series circuit, depending on a clocked controllable switch in the two main branches between the input side capacitor series circuit and the diode series circuit and a control unit for controlling the switch in a switch control mode in which it switches the two switches at different times and / or in different switching positions.