A step-up converter, embodied as a symmetrical step-up converter comprising a first subunit and a second subunit, characterized in that each of the subunits (24, 25) comprises a first inductance (7, 7') electrically connecting a first DC voltage input (2, 2') of the step-up converter to a first junction point (22, 22'), a step-up converter switch (8, 8') connecting the first junction point (22, 22') to a second DC voltage input (3, 3') and a second DC voltage output (5, 5') of the step-up converter, a first diode (9, 9') connecting the first junction point (22, 22') to a first DC voltage output (4, 4') of the step-up converter, and a snubber circuit, comprising a charging path and a discharging path, wherein the discharging path runs as series connection of a capacitor (10, 10') and a second diode (11, 11') from the first junction point (22, 22') to the first DC voltage output (4, 4') and the charging path comprises a series connection of a second inductance (13, 13') and a third diode (12, 12') and emanating from a junction point between the capacitor (10, 10') and the second diode (11, 11') is arranged such that the capacitor (10, 10') when the step-up converter switch (8, 8') is switched on is charged from an output capacitance that is arranged between the first and second DC voltage outputs (4, 4', 5, 5') and comprises a series connection of a first and a second output capacitor (14, 14', 15, 15') with an intermediate point, and wherein the charging path connects the junction point between the capacitor (10, 10') and the second diode (11, 11') to the intermediate point of the first and second output capacitors (14, 14', 15, 15'), wherein either - the snubber circuits of the subunits (24, 25) are respectively assigned to a different one of the two output capacitors (14, 15) and a control device of the step-up converter is configured to determine a driving frequency of the first subunit relative to a driving frequency of the second subunit depending on the voltage distribution between the first output capacitor and the second output capacitor and the snubber circuits of the subunits (24, 25) optionally comprise a common second inductance, or - an intermediate point between the second inductance and the third diode is connected to the first and second DC voltage outputs (4, 4', 5, 5') via a controllable compensation circuit, or - the intermediate point between the first and second output capacitors (14, 15) is connected to the first and second DC voltage outputs (4, 4', 5, 5') via a controllable compensation circuit comprising a separate third inductance (26, 26'). - the snubber circuits of the subunits (24, 25) are respectively assigned to a different one of the two output capacitors (14, 15) and a control device of the step-up converter is configured to determine a driving frequency of the first subunit relative to a driving frequency of the second subunit depending on the voltage distribution between the first output capacitor and the second output capacitor and the snubber circuits of the subunits (24, 25) optionally comprise a common second inductance, or - an intermediate point between the second inductance and the third diode is connected to the first and second DC voltage outputs (4, 4', 5, 5') via a controllable compensation circuit, or - the intermediate point between the first and second output capacitors (14, 15) is connected to the first and second DC voltage outputs (4, 4', 5, 5') via a controllable compensation circuit comprising a separate third inductance (26, 26').