Control device and an operating method thereof for operating the safety system for a vehicle

The present invention, boost converter and (AW), and at least one energy reserve accumulator (CER), the boost converter is configured as a switching converter, the boost converter is derived from the vehicle battery voltage and the input voltage (UB), was converted to a higher charging voltage (VUP) in the output side, wherein the at least one energy reserve accumulator is charged with the charging voltage for the operation of the safety system in autarky mode that relates to a control apparatus and method for operation of the safety system for a vehicle. Here is inverted operating at least one buck converter (DC1, DC2) are relative to the boost converter, sending from the at least one buck converter the charging voltage or the at least one energy reserve accumulator when its stepping down the voltage.