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:
Dec. 27, 2016
Filed:
Feb. 19, 2014
Power Integrations, Inc., San Jose, CA (US);
Paul Ryan, Cambridgeshire, GB;
Johan Piper, Cambridgeshire, GB;
Power Integrations, Inc., San Jose, CA (US);
Abstract
The present invention generally relates to powering a switching controller of a switch mode power converter (SMPC), and more particularly to a method of providing power to a switching controller of a SMPC, to a charging circuit for supplying charge to a charge store for providing power to a switching controller of a SMPC, and to an SMPC comprising such a circuit. A method of providing power to a switching controller of a switch mode power converter (SMPC), the SMPC having: an inductive component having a winding coupled to receive power from an input to said SMPC; a switching circuit comprising first and second switching transistors, said first transistor coupled in series between said winding and said second transistor; a switching controller to control switching of said second transistor; and a charge store to provide power to said switching controller, the method comprising: flow of current from said winding through said first transistor; and diverting said current through a conduction path to said charge store.