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

摘要

Disclosed is a DC-DC converter (GW), comprising: - a primary-side power connection (SA1) for connecting the DC-DC converter (GW) to a first voltage (U1), - a secondary-side electrical connection (SA2) for connecting the DC-DC converter (GW) to a second voltage (U2), - a ground power terminal (MA) for connecting the DC-DC converter (GW) to an electrical ground (GND), - a converter circuit (WS) between the primary-side (SA1) and secondary-side (SA2) power terminals for converting between the first (SA) U1) and the second (U2) voltage, - a single ground-side reverse-connection protection switch (K5) which is electrically connected in a ground current path (MP) between the converter circuit (WS) and the ground power connection (MA), - a single primary-side disconnecting switch (K1) and / or a single secondary-side disconnect switch (K2), wherein the single primary-side disconnect switch (K1) in a primary-side converter current path (WP1) between the primary-side power terminal (SA1) and the converter circuit (WS), and / or the single secondary-side disconnect switch (K2) in a secondary-side converter current path (WP2) between the converter circuit (WS) and the secondary-side power terminal (SA2) electrically connected are.