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:
Apr. 15, 2014
Filed:
Jul. 11, 2011
Paul Srimuang, San Diego, CA (US);
Shawn W. Dekalb, San Diego, CA (US);
Paul Srimuang, San Diego, CA (US);
Shawn W. DeKalb, San Diego, CA (US);
Empower Electronics, Inc., San Diego, CA (US);
Abstract
A ballast includes a power supply subsystem, a power factor correction circuit, a control subsystem and a half bridge. In one embodiment, the power supply subsystem receives an input line voltage that is within a range of approximately 310-530 volts AC or other suitable ranges. Further, in one embodiment, the power supply subsystem provides a rectified DC output. The power factor correction circuit receives the rectified DC output. In one embodiment, the power factor correction circuit includes a boost converter and a buck converter that produce a selected stable bus voltage that is less than approximately 700 volts DC. The control subsystem outputs control signals based on a digital input. The half bridge receives the bus voltage and the output control signals. Additionally, the half bridge outputs a high frequency signal to a lamp. In one embodiment, the control subsystem includes a microcontroller and a ballast controller. Further, in one embodiment, the ballast controller includes a software module that receives the digital input and provides first input control signals to the microcontroller.