Patent ID: 7135847
Filing Date: 2006-11-14
Classification: H02M

Abstract:
1. A buck converter comprising: a pair of input terminals A and B for connecting an input DC voltage Vin across these two terminals, the potential of the terminal A being higher than the potential of the terminal B; a pair P_ a pair of output terminals C and D for supplying a load Rout with an output voltage Vout, the output terminal D being connected to the input terminal B and the output terminal C to the connection point between the two switches SB and SH in series via a filter inductor Lout, characterized in that it comprises: K other additional pairs of switches in series between the input terminal A and the switch SH of the pair the two switches of the same additional pair P_i being connected in series via an energy recovery inductor Lr_i; K input groups, capacitors C in series, each of the same value, with i=1, 2, . . . K−1, K and Ni=(K+1)−i, the electrode of the capacitors of one of the two ends of each input group being connected to the input terminal A, at least the electrode of the capacitors of each of the other ends of the input groups being connected to the connection point between two pairs of consecutive switches P_(i−1) and P_i, respectively; K output groups, Gout_ in that the switches of these other K additional pairs are simultaneously controlled by the first and second complementary control signals forming, when the switch SB of the pair P_ and in that, when the switch SB of the pair P_