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, 2012
Filed:
Feb. 05, 2008
Dana Wilhelm, Temple City, CA (US);
Peter Green, Redondo Beach, CA (US);
Dana Wilhelm, Temple City, CA (US);
Peter Green, Redondo Beach, CA (US);
International Rectifier Corporation, El Segundo, CA (US);
Abstract
A ballast control integrated circuit for a ballast driving a high intensity discharge (HID) lamp. The control integrated circuit has a first circuit for controlling a DC to DC converter receiving a first DC voltage and providing an increased DC voltage. The first circuit includes a driver for providing a pulsed signal to drive a first switch coupled to a flyback transformer of the DC to DC converter. A second circuit controls a DC to AC converter, the second circuit controlling a switching circuit receiving the increased DC voltage and driving the HID lamp with an AC voltage. The second circuit has a driver circuit for driving the switching circuit. The switching circuit is an H-bridge switching circuit coupled to drive the HID lamp.