DCDC METHOD FOR CONTROLLING A SERIES RESONANT DCDC CONVERTER

摘要

The present invention relates to a method for controlling a series resonant DC / DC converter. The method includes defining a switching period TP having a first half period TA and a second half period TB and defining a subsequent switching period TP + 1 after a switching period TP . In the next step, the switches of the first set S1sc1 (S1sc1, S4sc1) of the first switching circuit SC1 are controlled to be ON from the start (Tstart) minus time interval? TAE1 of the first half period TA, Here, the time interval? TAE1 is provided at the end of the first half period TA and the switches of the second set S2sc1 (S2sc1, S3sc1) of the first switching circuit SC1 start at the start of the second half period (TB) (Tcenter) is controlled to be ON from the negative time interval (? TBE1), wherein the time interval? TBE1 is provided at the end of the second half period (TB). The switches of the first set S1sc2 (S1sc2, S4sc2) of the second switching circuit SC2 are controlled to be ON in the first half period TA negative time interval ATA1 and the negative time interval ATEA2, Wherein the interval TAS1 is provided at the beginning of the first half period TA wherein the time interval TAE2 is provided at the end of the first half period TA and the second set of second switching circuits SC2 S2SC2, S2sc2 and S3sc2 are controlled to be ON in the second half period (TB) negative time interval (ATBS1) and the negative time interval (ATBE2), wherein the time interval (ATBS1) , Wherein the time interval [Delta] TBE2 is provided at the end of the second half-period (TB). The time intervals Tsc1off1 and Tsc2off1, in which both sets of the first and second switching circuits are off, and the time intervals Tsc1off2 and Tsc2off2, overlap at least in part.