Book ChapterDOI
Buck–Boost LED Driver with Dimming Characteristics
R. Gunabalan,D. R. Binu Ben Jose,Padmanaban Sanjeevikumar +2 more
- pp 295-305
TLDR
An efficient control technique is introduced for low power LED lighting with dimming characteristics by relating a low and high frequency control signal in order to eliminate flickering and colour shift.Abstract:
Light Emitting Diode (LED) lighting plays a major role nowadays in industry and commercial applications. An efficient control technique is introduced for low power LED lighting with dimming characteristics. The driver circuit consists of a simple buck–boost converter with dc input voltage. The dimming characteristics are achieved by relating a low and high frequency control signal in order to eliminate flickering and colour shift. Software implementation is performed in MATLAB-simulink for a power rating of 10 W and tested under diverse brightness conditions. The simulation results demonstrate that dimming can be achieved with high efficiency.read more
References
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Journal ArticleDOI
Elimination of an Electrolytic Capacitor in AC/DC Light-Emitting Diode (LED) Driver With High Input Power Factor and Constant Output Current
Wu Chen,S. Y. Ron Hui +1 more
TL;DR: In this article, an ac/dc LED driver without electrolytic capacitor is studied and the operation principle, detailed design procedure of the main circuit, and control strategy are presented, and the feasibility of the proposed converter has been successfully verified by experiments.
Journal ArticleDOI
LED Driver Circuit with Series-Input-Connected Converter Cells Operating in Continuous Conduction Mode
Qingcong Hu,Regan Zane +1 more
TL;DR: In this article, an LED driver circuit implemented by series-input-connected converter cells with a common duty cycle control approach operating from a dc voltage bus is presented. But the authors do not specify the number of series converters.
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Noncascading Structure for Electronic Ballast Design for Multiple LED Lamps With Independent Brightness Control
TL;DR: In this paper, the authors proposed an LED ballast with a dual noncascading structure, where the first stage noncascade structure is an isolated current-fed power factor correction (PFC) preregulator.
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PWM Series Dimming for Slow-Dynamics HPF LED Drivers: the High-Frequency Approach
TL;DR: The high-frequency series PWM dimming technique is introduced, which overcomes all the challenges faced when developing PWMDimming capabilities in low slew-rate constant-current fixed-frequency-controlled converters and offers all the advantages of PWMdimming over analog dimming while maintaining good efficiency.
Journal ArticleDOI
An Efficient Driver for Dimmable LED Lighting
TL;DR: A high efficiency driver circuit is proposed for Light Emitting Diode (LED) lamps with dimming feature that includes a fly-back converter in series with the dc-link.