Patent ID: 7141957

Claim:
A converter circuit comprising: at least a first switching clement (T 1 ) and a second switching element (T 2 ) and an inductive element (L), wherein a control device ( 26 ) is provided to alternately switch the switching elements (T 1 , T 2 ) so that a current (I L ) flows through the inductive element (L), and wherein at least at the second switching element (T 2 ) there is provided a freewheeling diode (D 2 ) which is capable of conducting the current flowing through the inductive element (L) after turn-off of the first switching element (T 1 ), wherein the control device ( 26 ) controls a timing of driving the switching elements (T 1 , T 2 ) upon switching front the second switching element (T 2 ) to the first switching element (T 1 ) by determining whether one of a shoot through current occurs and the freewheeling diode (D 2 ) is conducting, wherein, upon the occurrence of the shoot through current, the timing of driving the switching elements (T 1 , T 2 ) is changed such that the turn on of the first switching element (T 1 ) takes place later with respect to the instant of turn off of the second switching element (T 2 ), and when the freewheeling diode (D 2 ) is conducting, the timing of driving the switching elements (T 1 , T 2 ) is changed such that the turn on of the first switching element (T 1 ) takes place sooner with respect to the instant of turn off of the second switching element (T 2 ).