Patent ID: 8593116

Claim:
A switched-mode converter comprising: a first magnetic circuit comprising a first inductive element, directly coupled to at least one second inductive element and directly connected in series with the second inductive element and with a first diode between a first one of two input terminals and a first one of two output terminals; a first switch directly coupled in series with a third inductive element between a second terminal of the first inductive element and a second input terminal, a common node between the first switch and the third inductive element being connected to one of the output terminals by a second diode; and a circuit capable of canceling the voltage across the first switch before its turning-on, comprising: a fourth inductive element and a fifth inductive element directly connected in series between the common node and the second diode, the fourth and fifth inductive elements forming a second magnetic circuit; a first branch including a second switch and a third diode; and a second branch including a resistive element and a fourth diode, one of the first and second branches having a first terminal directly connected to a second node common to the fourth and fifth inductive elements and the other of the first and second branches having a first terminal directly connected to a third node common to the fifth inductive element and the second diode, wherein second terminals of the first and second branches are connected to the second input terminal.