Dc-to-dc converter and method for operating a dc-to-dc converter

A DC-to-DC converter (1), having:

• a first transformer (30), with a primary winding (31) and a secondary winding (32);
• an inverter (10), which is electrically coupled at an input to a first input terminal (E1) and a second input terminal (E2) of the DC-to-DC converter (1), and an output of which is electrically coupled to the primary winding (31) of the first transformer (30);
• a rectifier (20), which is coupled on its input side to the secondary winding (32) of the first transformer (30) and, on the output side, is electrically coupled to a first output terminal (A1) and a second output terminal (A2) of the DC-to-DC converter (1);
• and
• a compensating device (40), having a second transformer (40) and a switching element (41), wherein the second transformer (42) comprises a primary winding (43) and a secondary winding (44), wherein the primary winding (43) of the second transformer (42) is arranged between the first input terminal (E1) of the DC-to-DC converter (1) and a terminal of the input of the inverter (10), and wherein a series circuit comprised of the switching element (41) and the secondary winding (44) of the second transformer (42) is arranged between the first input terminal (E1) and the second input terminal (E2) of the DC-to-DC converter (1).