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A cost‐effective PWM dimming method for LED lighting applications
Author(s) -
Chiu HuangJen,
Lo YuKang,
Lin YuLiang,
Jane GwanChi
Publication year - 2015
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.1940
Subject(s) - pulse width modulation , electronic engineering , computer science , power (physics) , led lamp , power factor , light emitting diode , modulation (music) , flyback transformer , engineering , voltage , electrical engineering , physics , quantum mechanics , acoustics , transformer
This paper presents a novel cost‐effective pulse‐width‐modulation (PWM) dimming method for light‐emitting diode (LED) lighting applications. High efficiency, high power factor, circuit simplicity, and low cost can be achieved by a Flyback power factor correction converter with the studied adaptive PWM dimming method. The operation principles and design considerations of the proposed LED dimming method are analyzed and discussed. A 45 W laboratory prototype has been built and tested to verify the feasibility of the proposed scheme. Copyright © 2013 John Wiley & Sons, Ltd.