Abstract: A multi-voltage power supply system, such as a 14V/42V dual-voltage system for vehicular applications, includes a battery arrangement and an intelligent switching regulator for providing at least a first output at a first potential and a second output at a second potential higher than the first potential. The battery arrangement includes a plurality of segments each providing an output substantially equal to the first potential. The switching regulator selectively conFIG. s each of the segments as a first part having a potential difference determined with respect to the first potential and a reference potential, e.g., ground, such that the power supply system provides the first and second outputs while minimizing degradation of the segments.

Abstract: The invention relates to a regulation system for voltage regulation in the electrical power supply system for a motor vehicle, which contains a supercapacitor. In a short-term standby mode (ST), the voltage (U) of the supercapacitor is regulated such that a voltage window (?U) is maintained, thus ensuring a minimum energy content in the supercapacitor (4). During a long-term standby mode (LT), the supercapacitor (4) is charged to a voltage (Uh) only when an activation signal (tA) occurs. The energy for charging is drawn from a second energy store, in particular a battery.

Abstract: A multi-voltage power supply system, such as a 14V/42V dual-voltage system for vehicular applications, includes a battery arrangement and an intelligent switching regulator for providing at least a first output at a first potential and a second output at a second potential higher than the first potential. The battery arrangement includes a plurality of segments each providing an output substantially equal to the first potential. The switching regulator selectively conFIG. s each of the segments as a first part having a potential difference determined with respect to the first potential and a reference potential, e.g., ground, such that the power supply system provides the first and second outputs while minimizing degradation of the segments.

Abstract: The invention relates to a regulation system for voltage regulation in the electrical power supply system for a motor vehicle, which contains a supercapacitor. In a short-term standby mode (ST), the voltage (U) of the supercapacitor is regulated such that a voltage window (&Dgr;U) is maintained, thus ensuring a minimum energy content in the supercapacitor (4). During a long-term standby mode (LT), the supercapacitor (4) is charged to a voltage (Uh) only when an activation signal (tA) occurs. The energy for charging is drawn from a second energy store, in particular a battery.