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:
Jul. 23, 2019
Filed:
Jul. 31, 2017
Stmicroelectronics S.r.l., Agrate Brianza, IT;
STMicroelectronics S.r.l., Agrate Brianza (MB), IT;
Abstract
An integrated circuit includes an output terminal a first input terminal is configured to receive a signal proportional to a voltage between first and second terminals of the primary winding, and a second input terminal is configured to receive a signal proportional to a current flowing through the primary winding. A quasi-resonant (QR) circuit has a first input coupled to the first terminal, and a second input coupled to an output of an oscillator circuit. A selector circuit has a first input coupled to the output of the oscillator circuit, a second input coupled to an output of the QR circuit, and a select input. An output control circuit includes a first input coupled to the second input terminal, a second input coupled to an output of the selector circuit, and an output coupled to a control terminal of the switching transistor.