Patent ID: 8072782

Claim:
A device for generating a regulated output voltage from an input voltage coming from an electric power supply source, the device being of the type comprising: an energy-storage transformer having magnetically coupled primary and secondary windings; a primary circuit connecting the power supply source to a ground, and comprising the primary winding and a static main switch connected in series; a secondary winding designed to be connected to a load, and including the secondary winding; and voltage control means for controlling the static main switch and comprising a first static control switch connecting a control terminal of the static main switch to ground; wherein the voltage control means of the static main switch include a second static control switch connecting the control terminal of the static main switch to ground, closure of the first control switch triggering closure of the second control switch, and opening of the second control switch being delayed relative to opening of the first control switch, wherein the control means comprise a first control circuit for controlling the first static switch as a function of a first parameter that depends on the magnitude of the current flowing in the primary circuit, and wherein the first control circuit comprises a first branch connecting a control terminal of the first switch to a first resistor element forming a shunt, the shunt being connected in the primary circuit in series with the primary winding and the main switch.