Current-reversible DC/DC Boost converter that will act as an interface between a first DC voltage source and a second DC voltage source, the voltage of the first DC voltage source being less than the voltage of the second DC voltage source, the topology of the converter being made of the following branches: - a first branch connecting the positive poles of the first and the second DC voltage sources and comprising, in series from the first to the second DC voltage sources, a first induction coil (L 1), a first switch controlled in opening and in closing (Q 1), a second induction coil (L 2) and un third switch controlled in opening and in closing (Q 3); - a second branch connecting the negative poles of the first and the second DC voltage sources; - a third branch, connected in parallel to the first switch (Q 1) and the second coil (L 2) in series, comprising a diode (D 1) of which the anode is on the side of the positive pole of the first voltage source; - a fourth branch, connected between the second branch and the part of the first branch located between the first induction coil (L 1) and the first switch (Q 1), comprising a second diode (D 2) the anode of which is on the side of the second branch; - a fifth branch, connected between the second branch and the part of the first branch located between the first switch (Q 1) and the second induction coil (L 2), comprising a first capacitor (C 1), - a sixth branch, connected between the second branch and the part of the first branch located between the second induction coil (L 2) and the third switch (Q 3), comprising a second switch controlled in opening and in closing (Q 2), - a seventh branch, connected in parallel on the second DC voltage source and comprising a second capacitor (C 2), the converter comprising means for controlling the switches so that: - when the current in the converter circulates from the first to the second voltage source, during a control period varying from 0 to T and for a cyclic ratio α: • from time t=0 to time t=αT, where 0<α<1, the first (Q 1) and third (Q 3) switches are open and the second switch (Q 2) is closed, • from time t=αT to time t=T, the first (Q 1) and third (Q 3) switches are closed and the second switch (Q 2) is open, - when the current in the converter circulates from the second to the first voltage source for a control period varying from 0 to T and for a cyclic ratio α: • from time t=0 to time t=αT, where 0<α<1, the first (Q 1) and third (Q 3) switches are closed and the second switch (Q 2) is open, • from time t=αT to time t=T, the first (Q 1) and third (Q 3) switches are open and the second switch (Q 2) is closed. - a first branch connecting the positive poles of the first and the second DC voltage sources and comprising, in series from the first to the second DC voltage sources, a first induction coil (L 1), a first switch controlled in opening and in closing (Q 1), a second induction coil (L 2) and un third switch controlled in opening and in closing (Q 3); - a second branch connecting the negative poles of the first and the second DC voltage sources; - a third branch, connected in parallel to the first switch (Q 1) and the second coil (L 2) in series, comprising a diode (D 1) of which the anode is on the side of the positive pole of the first voltage source; - a fourth branch, connected between the second branch and the part of the first branch located between the first induction coil (L 1) and the first switch (Q 1), comprising a second diode (D 2) the anode of which is on the side of the second branch; - a fifth branch, connected between the second branch and the part of the first branch located between the first switch (Q 1) and the second induction coil (L 2), comprising a first capacitor (C 1), - a sixth branch, connected between the second branch and the part of the first branch located between the second induction coil (L 2) and the third switch (Q 3), comprising a second switch controlled in opening and in closing (Q 2), - a seventh branch, connected in parallel on the second DC voltage source and comprising a second capacitor (C 2), - when the current in the converter circulates from the first to the second voltage source, during a control period varying from 0 to T and for a cyclic ratio α: • from time t=0 to time t=αT, where 0<α<1, the first (Q 1) and third (Q 3) switches are open and the second switch (Q 2) is closed, • from time t=αT to time t=T, the first (Q 1) and third (Q 3) switches are closed and the second switch (Q 2) is open, • from time t=0 to time t=αT, where 0<α<1, the first (Q 1) and third (Q 3) switches are open and the second switch (Q 2) is closed, • from time t=αT to time t=T, the first (Q 1) and third (Q 3) switches are closed and the second switch (Q 2) is open, - when the current in the converter circulates from the second to the first voltage source for a control period varying from 0 to T and for a cyclic ratio α: • from time t=0 to time t=αT, where 0<α<1, the first (Q 1) and third (Q 3) switches are closed and the second switch (Q 2) is open, • from time t=αT to time t=T, the first (Q 1) and third (Q 3) switches are open and the second switch (Q 2) is closed. • from time t=0 to time t=αT, where 0<α<1, the first (Q 1) and third (Q 3) switches are closed and the second switch (Q 2) is open, • from time t=αT to time t=T, the first (Q 1) and third (Q 3) switches are open and the second switch (Q 2) is closed.