DEVICE FOR PREVENTING OVERVOLTAGE-INDUCED DAMAGE CAUSED BY FAULT PROPAGATION IN SAFETY-RELEVANT SYSTEMS

A device controls a safety-relevant electronic system and has a power supply. The power supply is supplied with a battery voltage at a first input terminal and supplies a first supply voltage at a first output terminal which is lower than the battery voltage. A microcontroller for generating a first control signal, provided at a first control output of the microcontroller for processing by way of a control unit, is supplied with the first supply voltage at a second input terminal. A monitoring unit for generating a second control signal, provided at a second control output of the monitoring unit for processing by the control unit, is supplied with the first supply voltage at a third supply potential input terminal. The third supply potential input terminal, the second control output and the second data port of the monitoring unit are configured to be voltage-proof with respect to the battery voltage.