Patent ID: 7688044

Claim:
A device to be coupled to a primary AC voltage and an electric load, the device comprising: an input; a generator to generate at least one PWM control signal; an inductive element to be coupled to said input; a capacitor to be coupled in parallel to the electric load and coupled to the input; a first bidirectional switch to couple the electric load and the primary AC voltage during a conduction phase; a second bidirectional switch to discharge energy from the electric load during an off phase of said first bidirectional switch; a first driving circuit for said second bidirectional switch to be input with the at least one PWM control signal and to generate a first PWM signal to be applied between a control terminal and a conduction terminal of said second bidirectional switch; a second driving circuit for said first bidirectional switch input with the at least one PWM control signal and to generate a second PWM signal, in phase opposition with respect to the first PWM signal, to be applied between a control terminal and a conduction terminal of said first bidirectional switch; and an electric decoupling circuit between said generator and said second driving circuit.