Regulating circuit for a substrate bias voltage generator

A regulating circuit for a switched substrate bias voltage generator for generating a controlled substrate bias voltage which fluctuates between first and second threshold values in an integrated semiconductor circuit, comprising:

• a Schmitt trigger circuit disposed between a first potential and a second potential of a semiconductor circuit, said
• Schmitt trigger circuit having an output side and an input for controlling a hysteresis function of said Schmitt trigger circuit;
• an inverter array connected downstream of the output side of said Schmitt trigger circuit, said inverter array being connected to the first potential and to a first supply potential of the semiconductor circuit in terms of supply voltage, and said inverter array having an output;
• the input of said Schmitt trigger circuit for controlling the hysteresis function of said Schmitt trigger circuit being connected to the output of said inverter array;
• means for turning off the substrate bias voltage generator when a given first threshold of the substrate bias voltage is reached, and for turning on the substrate bias voltage generator when a given second threshold of the substrate bias voltage is reached.