Patent ID: 8134350

Claim:
A device for precharging a voltage converter, the converter being capable of transforming an input voltage signal into a voltage signal obtained by chopping the input voltage signal, the device comprising: a precharging unit configured to assume a closed state, a control unit for the precharging unit and a first connection point and a second connection point for connection to the converter; wherein the precharging unit is configured to operate according to a precharging state limiting the value of the precharging current passing through the precharging unit, the control unit being configured to command the operation of the precharging unit according to the precharging state and, once the precharging has been completed, to command the precharging unit to change over from the precharging state to the closed state, where in the control unit includes an auxiliary power supply connected to the first connection point and to a gate of the precharging unit, and a capacitor interposed between the gate and the connection point.