Analysis and Design of a High-Efficiency Boundary Conduction Mode Tapped-Inductor Boost LED Driver for Mobile Products

Jeong-il Kang; Sang-Kyoo Han; Jonghee Han

Analysis and Design of a High-Efficiency Boundary Conduction Mode Tapped-Inductor Boost LED Driver for Mobile Products

Jeong-il Kang

Sang-Kyoo Han

Jonghee Han

Vol. 14, No. 4, pp. 632-640, Jul. 2014

10.6113/JPE.2014.14.4.632

Current control

DC-DC power conversion

Efficiency

ZVS converters

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Abstract

For low-power high-frequency LED driver applications in small form factor mobile products, a high-efficiency boundary conduction mode tapped-inductor boost converter is proposed. In the proposed converter, the switch and the diode achieve soft-switching, the diode reverse-recovery is alleviated, and the switching frequency is very insensitive to output voltage variations. The circuit is quantitatively characterized, and the design guidelines are presented. Experimental results from an LED backlight driver prototype for a 14 inch notebook computer are also presented.

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Cite this article

[IEEE Style]

J. Kang, S. Han, J. Han, "Analysis and Design of a High-Efficiency Boundary Conduction Mode Tapped-Inductor Boost LED Driver for Mobile Products," Journal of Power Electronics, vol. 14, no. 4, pp. 632-640, 2014. DOI: 10.6113/JPE.2014.14.4.632.

[ACM Style]

Jeong-il Kang, Sang-Kyoo Han, and Jonghee Han. 2014. Analysis and Design of a High-Efficiency Boundary Conduction Mode Tapped-Inductor Boost LED Driver for Mobile Products. Journal of Power Electronics, 14, 4, (2014), 632-640. DOI: 10.6113/JPE.2014.14.4.632.