The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 2010
Filed:
Mar. 28, 2008
Mario Di Guardo, Gravina di Catania, IT;
Giovanni Mangraviti, Messina, IT;
Mario Di Guardo, Gravina di Catania, IT;
Giovanni Mangraviti, Messina, IT;
STMicroelectronics S.R.L., Agrate Brianza (MI), IT;
Abstract
A device coupled to a primary AC voltage and a load includes an input, an inductive element coupled thereto, and a generator of a PWM control signal. A capacitor is coupled in parallel to the load. A first bidirectional switch couples the load and primary AC voltage during conduction phases. A second bidirectional switch discharges energy from the load during off phases of the first bidirectional switch. A first driving circuit for the second bidirectional switch, input with the PWM control signal, generates a first PWM signal applied between control and conduction terminals of the second bidirectional switch. A second driving circuit for the first bidirectional switch, input with the PWM control signal, generates a second PWM signal, in phase opposition with the first PWM signal, applied between control and conduction terminals of the first bidirectional switch. An electric decoupling circuit is between the generator and the second driving circuit.
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