DC-DC converter, vehicle electrical system with a DC-DC converter

摘要

Disclosed is a DC-DC converter (GW1, ...) for converting between two voltages (U1, U2), comprising: - two first power terminals (A11, A12) for connecting the DC-DC converter (GW1, ...) to a first voltage (U1 ); - two second power connections (A21, A22) for connecting the DC-DC converter (GW1, ...) to a second voltage (U2); A third power terminal (A3) for switching the DC / DC converter (GW1, ...) on / to an electrical device (LD); A first voltage conversion path (SP1, SP5, SP6) for converting between the two voltages (U1, U2) electrically connected between the first power terminals (A11, A12) on the one hand and the second power terminals (A21, A22) on the other hand; A first controllable selection switch (AS1) which comprises a first (E1), a second (E2) and a third (E3) switching terminals and is connected in series in the first voltage converter path (SP1) via the first (E1) and the second (E2) switching connection , SP5) and is electrically connected to the third power terminal (A3) via the third switching terminal (E3); A power management unit (EM) for controlling the first selection switch (AS1) configured to selectively connect at least two of each of the first (E1), second (E2) and third (E3) switching terminals to each other electrically.