Voltage converter having overvoltage protection

A voltage converter for converting an input voltage into a DC output voltage output at an output of the voltage converter, comprising:

• a first switch-off unit, which is configured to effect a switch-off of at least a part of the voltage converter if the DC output voltage reaches or exceeds a first voltage threshold in order to reduce the DC output voltage,
• a second switch-off unit, which is configured:
• to continuously form a mean value of the DC output voltage output at the output of the voltage converter,
• to check whether the mean value of the DC output voltage reaches or exceeds a mean value threshold, and
• to effect a switch-off of at least a part of the voltage converter when the mean value threshold is reached or exceeded in order to reduce the DC output voltage,
• wherein the second switch-off unit is further configured:
• to detect a first time point of reaching or exceeding a second voltage threshold, lower than the first voltage threshold, by the DC output voltage and, at a second time point after a predetermined interval has elapsed from the first time point,
• to check whether the second voltage threshold is reached or exceeded by the DC output voltage, and to conclude, when the second voltage threshold is reached or exceeded both at the first time point and at the second time point, that the mean value of the DC output voltage reaches or exceeds the mean value threshold,
• wherein the first and second time points are 0.01 to 100 ms apart.