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:
Jan. 10, 2017
Filed:
Sep. 16, 2014
Power Integrations, Inc., San Jose, CA (US);
Jose Requinton Del Carmen, Jr., San Jose, CA (US);
Power Integrations, Inc., San Jose, CA (US);
Abstract
A power converter includes an energy transfer element, a power switch, a controller and a leading edge dimming detection circuit. The controller is coupled to control switching of the power switch to regulate the output of the power converter by controlling a transfer of energy through the energy transfer element. The leading edge dimming detection circuit is coupled to generate a control signal in response to detecting leading edge dimming at the input of the power converter. In one aspect, the leading edge dimming detection circuit detects the leading edge dimming and then generates a control signal to engage a compensator which maintains the input current of the power converter to be equal to or greater than a minimum current. In another aspect, the leading edge dimming detection circuit detects and reutilizes the turn-on current spike energy of a leading edge dimmer.