The present invention relates to a DC /
DC converter (1) with primary side (11) consisting of a
resonant converter, which DC /
DC converter (1) comprises a first and a second
transformer (T1, T2), connected in series on the primary side (11) and on the
secondary side (12) of the DC /
DC converter. The
secondary side (12) comprises an
autotransformer (Tcd) consisting of a first and a second winding (Tcda, Tcdb) connected to a common
center tap (Tcdc), where the first winding (Tcda) of the
autotransformer (Tcd) is connected to the secondary winding (T1b) of the first
transformer (T1), forming a first output connection point (P1), the second winding (Tcdb) of the
autotransformer (Tcd) is connected to the secondary winding (T2b) of the second
transformer (T2), forming a second output connection point (P2), and the
center tap (Tcdc) of the autotransformer (Tcd) is connected to the positive output (21) of the
secondary side (12). The secondary side (12) also comprises a first and a second rectifying switching device (S1, S2), where the first rectifying switching device (S1) is connected between the first output connection point (P1) and the negative output (22) of the secondary side (12), and the second rectifying switching device (S2) is connected between the second output connection point (P2) and the negative output (22) of the secondary side (12). The present invention also relates to a DC / DC converter
system comprising at least two inventive DC / DC
converters (1).