Boost DC-DC converter with charge-recycling (CR) and fast reference tracking (FRT) techniques for high-efficiency and low-cost LED driver

Chun Yu Hsieh*, Ke-Horng Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

A charge-recycling (CR) technique and fast reference tracking (DRT) are proposed for implementing a high efficiency and low cost RGB backlight module in color sequential notebook computers' display. A RGB LED driver composed of an asynchronous 1.5MHz DC/DC boost converter with FRT and CR techniques was fabricated in TSMC 0.25μm BCD 40V to generate 17V for 6-series red LEDs or 21V for 6-series green, or blue LEDs. The CR technique stores extra energy at the output node when the output voltage is switched from low to high voltage level and releases the reserved energy back to the output node at next period. Furthermore, the output voltage can be rapidly switched between two different voltage levels by FRT technique without wasting much power owing to the CR technique.

Original languageEnglish
Title of host publicationESSCIRC 2008 - Proceedings of the 34th European Solid-State Circuits Conference
Pages358-361
Number of pages4
DOIs
StatePublished - 31 Dec 2008
Event34th European Solid-State Circuits Conference, ESSCIRC 2008 - Edinburgh, Scotland, United Kingdom
Duration: 15 Sep 200819 Sep 2008

Publication series

NameESSCIRC 2008 - Proceedings of the 34th European Solid-State Circuits Conference

Conference

Conference34th European Solid-State Circuits Conference, ESSCIRC 2008
CountryUnited Kingdom
CityEdinburgh, Scotland
Period15/09/0819/09/08

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    Hsieh, C. Y., & Chen, K-H. (2008). Boost DC-DC converter with charge-recycling (CR) and fast reference tracking (FRT) techniques for high-efficiency and low-cost LED driver. In ESSCIRC 2008 - Proceedings of the 34th European Solid-State Circuits Conference (pp. 358-361). [4681866] (ESSCIRC 2008 - Proceedings of the 34th European Solid-State Circuits Conference). https://doi.org/10.1109/ESSCIRC.2008.4681866