Circuit arrangement for converting an electrical variable, in particular for converting an input voltage ue on a voltage input in an output voltage ua to a voltage output of the circuit arrangement

摘要

The invention relates to a circuit arrangement (20) for converting an electrical variable, in particular for converting an input voltage u._E at a voltage input (1) to an output voltage u_A to a voltage output (9), comprising at least two step-down controller (2, 6), two switches (4, 5) and two the downwardly regulators (2, 6) associated vorwider state control (3, 7), wherein after said first step-down controller (2) the switch (4, 5) are arranged in parallel and the switch (5) the first step-down controller (2) directly to the voltage output (9), and connects the switch (4) the first step-down controller (2) with the second step-down controller (6), and connects the second step-down controller (6) to the voltage output (9) is connected.Furthermore, the invention relates to a method for operating the circuit to the order.