An Improved Non-isolated LED Converter with Power Factor Correction and Average Current Mode Control
Renbo Xu, Hongjian Li, Yongzhi Li, Changqian Zhang
DOI: 10.4236/cs.2011.23034   PDF   HTML     5,691 Downloads   10,710 Views  


A new type of high power LED drivers is proposed by adopting an improved two-stages non-isolated configuration. In order to improve power factor and achieve accurate average current control under universal input voltages ranging from 100 Vrms to 240 Vrms, the power factor correction and average current mode control methods operating in continuous current conduction mode are designed and implemented. With the LUMILEDS emitter type LEDs, a laboratory prototype is built and measured. And from the measured results, it could be concluded that the proposed driver has many better performances such as high power factor, low current harmonic, accurate average current control and switch protection.

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R. Xu, H. Li, Y. Li and C. Zhang, "An Improved Non-isolated LED Converter with Power Factor Correction and Average Current Mode Control," Circuits and Systems, Vol. 2 No. 3, 2011, pp. 242-248. doi: 10.4236/cs.2011.23034.

Conflicts of Interest

The authors declare no conflicts of interest.


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