Patent ID: 8587976
Filing Date: 2013-11-19
Classification: H02M

Abstract:
1. A DC/DC converter for converting an input DC voltage present between two input lines at an input side of the DC/DC converter into an output DC voltage present between two output lines at an output side of the DC/DC converter, the DC/DC converter comprising: at least one AC current forward path that is, via electric components, connected at its input end to the input lines and at its output end to the output lines, wherein at least one of the electric components between the AC current forward path and at least one of the input lines and at least one of the electric components between the AC current forward path and at least one of the output lines are switching electric components, and wherein at least one of these switching electric components is actively operated; at least one AC current backflow path for a backflow of current flowing off via the AC current forward path, the at least one AC current backflow path being connected via at least one input side connection to at least one of the input lines at its input end and via at least one output side connection to at least one of the output lines at its output end, wherein the input side and the output side connections are same connections selected from a group of connections comprising electrically conductive connections and switching connections; and at least one auxiliary converter configured to compensate a current sum of currents flowing via the at least one AC current forward paths and the at least one AC current backflow path, the at least one auxiliary converter electrically conductively connecting one end of an additional compensation current path that runs in parallel to the at least one AC current forward path and the at least one AC current backflow path via two pulsed switches alternately to two lines at one side of the DC/DC converter, wherein the other end of the compensation current path is permanently electrically conductively connected to at least one line at the other side of the DC/DC converter via at least one connection capacitance; wherein the input lines are galvanically separated from the output lines by capacitances arranged in the AC current path including the at least one AC current forward path, the at least one AC current backflow path and the at least one compensation current path.