ROAD VEHICLE PROVIDED WITH AN ELECTRONIC DC-DC POWER CONVERTER AND CORRESPONDING CONTROL METHOD

A road vehicle (1) comprising: an internal combustion engine (5); an electric starter motor (20); a high-voltage electric circuit (16) provided with a first storage system (14); a low-voltage electric circuit (17) provided with a second storage system (24) and directly connected to the electric starter motor (20); an electronic DC-DC power converter (23), which connects the low-voltage electric circuit (17) and the high-voltage electric circuit (16) to one another; and a control unit (26) configured, in the presence of a turned-on condition of the road vehicle (1) and when the internal combustion engine (5) is off, to activate the electronic DC-DC power converter (23) so as to transfer power to be at least partially supplied to the electric starter motor (20) from the high-voltage electric circuit (16) to the low-voltage electric circuit (17) only in case of a cold-start condition of the internal combustion engine (5).