A system for the conversion of a first electric voltage into a second electric voltage, the system comprising:
- at least two input terminals and at least two output terminals;
- switching elements positioned between the input terminals and the output terminals the switching elements configured to convert the first voltage into the second voltage;
- and
- a control device for the switching elements, wherein the control device comprises:
- a control cell of a respective switching element;
- and
- a control and supply unit connected to the control cell by a link for the simultaneous transmission of a control signal and electrical energy, the control and supply unit comprising a generator configured to generate a pulse, the generator comprising at least two distinct control slots comprising a first control slot and a second control slot, the pulse having a substantially constant value during the second control slot distinct from a reference value corresponding to the absence of control, wherein the value of the pulse is distinct from the first control slot to the second control slot, and the pulse has a first value during the first control slot that is greater than a second value during the second control slot.