Abstract
This paper proposes an AC LED driver with high power factor and balanced brightness. While conventional LED driver has some problems of large size and lifespan, the proposed driver overcomes those problems by elimination of inductors and electrolyte capacitors. The proposed circuit consists of bypass MOSFETs, digital logic controller and current regulator. The bypass MOSFETs, which are connected in parallel to segmented LED strings, are controlled to achieve high power factor and balance brightness of each LED and to minimize power loss, simultaneously. In this paper, the basic operating principle for balanced brightness and gate driving method are described. Experimental results with a 12 W LED strings verify the feasibility of the proposed LED driver.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
