Power supply and distribution system for an electric vehicle and a method for operating a power supply system for an electric vehicle

A power supply and distribution system for an electric vehicle, comprising:

• a High Voltage power source connected to a first DC-DC converter and a second DC-DC converter, each of the first DC-DC converter and the second DC-DC converter producing Low Voltage DC to a first primary power supply line for a first group of critical low voltage equipment and a second primary power supply line for a second group of critical low voltage equipment, respectively;
• wherein the first primary power supply line and the second primary power supply line are connected in parallel to Variable Electrical Loads via a dual back-to-back switch unit, the dual back-to-back switch comprising a first back-to-back switch and a second back-to-back switch each individually controlled by at least a first microcontroller unit;
• and
• wherein the at least first microcontroller unit receives input from a Central Electronic Unit and/or a Vehicle Control Unit regarding the state of the power supply availability of the first primary power supply line and the second primary power supply line, respectively.