A zero-voltage-switching series-resonant DC-DC converter, for exchanging electrical power between an input side, comprising a positive input terminal and a negative input terminal, and an output side, comprising a positive output terminal and a negative output terminal, the zero-voltage-switching series-resonant DC-DC converter comprising • at least two inductive elements, a first inductive element and a second inductive element, each inductive element comprising ∘ a transformer (312, 322), ∘ a first input terminal (314, 324) and a second input terminal (315, 325) arranged to supply a current to a primary winding of the transformer (312, 322), ∘ a first output terminal (316, 326) and a second output terminal (317, 327) arranged to supply a current to a secondary winding of the transformer (312, 322), ∘ and at least one converter inductance arranged in the path of a current flowing through at least one of the terminals of the respective inductive element (31, 32), • a switching circuit arranged to supply ∘ a first alternating voltage to the first input terminal and second input terminal of the first inductive element and ∘ a second alternating voltage to the first input terminal and the second input terminal of the second inductive element, • a rectification circuit arranged between the positive output terminal and the negative output terminal, ∘ to rectify a first output voltage arising between the first output terminal and the second output terminal of the first inductive elements, and ∘ to rectify a second output voltage arising between the first output terminal and the second output terminal of the second inductive element, characterised in that one of the output terminals of the first inductive element being capacitively coupled to one of the output terminals of the second inductive element by means of a resonant capacitor, and in that the DC-DC converter comprises a control unit configured to control the first alternating voltage and second alternating voltage to have a phase shift relative to one another, the phase shift controlling a power transfer between the input side and the output side. • at least two inductive elements, a first inductive element and a second inductive element, each inductive element comprising ∘ a transformer (312, 322), ∘ a first input terminal (314, 324) and a second input terminal (315, 325) arranged to supply a current to a primary winding of the transformer (312, 322), ∘ a first output terminal (316, 326) and a second output terminal (317, 327) arranged to supply a current to a secondary winding of the transformer (312, 322), ∘ and at least one converter inductance arranged in the path of a current flowing through at least one of the terminals of the respective inductive element (31, 32), ∘ a transformer (312, 322), ∘ a first input terminal (314, 324) and a second input terminal (315, 325) arranged to supply a current to a primary winding of the transformer (312, 322), ∘ a first output terminal (316, 326) and a second output terminal (317, 327) arranged to supply a current to a secondary winding of the transformer (312, 322), ∘ and at least one converter inductance arranged in the path of a current flowing through at least one of the terminals of the respective inductive element (31, 32), • a switching circuit arranged to supply ∘ a first alternating voltage to the first input terminal and second input terminal of the first inductive element and ∘ a second alternating voltage to the first input terminal and the second input terminal of the second inductive element, ∘ a first alternating voltage to the first input terminal and second input terminal of the first inductive element and ∘ a second alternating voltage to the first input terminal and the second input terminal of the second inductive element, • a rectification circuit arranged between the positive output terminal and the negative output terminal, ∘ to rectify a first output voltage arising between the first output terminal and the second output terminal of the first inductive elements, and ∘ to rectify a second output voltage arising between the first output terminal and the second output terminal of the second inductive element, ∘ to rectify a first output voltage arising between the first output terminal and the second output terminal of the first inductive elements, and ∘ to rectify a second output voltage arising between the first output terminal and the second output terminal of the second inductive element,