Abstract: The present invention relates to a DC-DC converter. The DC-DC converter includes a transformer; an input circuit configured to receive an input DC voltage (Ueg) and to provide an input AC voltage (Uew) to the transformer; and an output circuit configured to receive an output AC voltage (Uaw) from the transformer and to provide an output DC voltage (Uag), wherein a leakage inductance estimating device is provided which is configured to determine, to receive, or both to determine and to receive operating parameters (P-De, P-T, P-Ie1, P-Ie2, P-Ueg, P-Da, P-Uag) of the input circuit and the output circuit and, on the basis of the operating parameters (P-De, P-T, P-Ie1, P-Ie2, P-Ueg, P-Da, P-Uag), to determine a leakage inductance parameter (P-L) that estimates a leakage inductance of the transformer.

Abstract: A DC/DC converter is provided. The DC/DC converter includes a control device for controlling LV semiconductor switches and HV semiconductor switches by means of pulse-width modulated control signals. The control device is configured to detect the LV DC voltage and the HV DC voltage based on the LV DC voltage, the HV DC voltage, and a transformation ratio of a transformer, to determine a theoretical pulse-width modulation duty cycle and to generate a pulse-width modulated control signal as a function of the theoretical pulse-width modulation duty cycle.