An energy-recycling (ER) technique for reducing power consumption of field color sequential (FCS) RGB LEDs backlight module

Ming Hsin Huang, Yueh Chang Tsai, Shih Wei Wang, Dian Rung Wu, Ke-Horng Chen*, Chien Yu Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A single driving module with field color sequential (FCS) LCD technology needs to dynamically switch output voltage between 40 V for 12 series G- and B- color LEDs and 26 V for 12 series R-color LEDs at related time cluster. Thus, an energy-recycling (ER) technology is proposed to accelerate voltage settling and save compressed energy when the driving voltage is pressed from 40 V to 26 V. Only one recycling capacitor and one Schottky diode are added into the power structure of synchronous boost converter for composing the proposed ER technology. A proposed energy-recycling mode (ERM) controller is plugged into a boundary current mode (BCM) controller to control energy delivering and recycling. The proposed ER technology was fabricated by TSMC 0.25 μm 2.5/5 V BCD process. Experimental results demonstrate fast and efficient tracking performance of driving voltage is achieved.

Original languageEnglish
Title of host publicationProceedings of Technical Papers - 2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009
Pages333-336
Number of pages4
DOIs
StatePublished - 1 Dec 2009
Event2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009 - Taipei, Taiwan
Duration: 16 Nov 200918 Nov 2009

Publication series

NameProceedings of Technical Papers - 2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009

Conference

Conference2009 IEEE Asian Solid-State Circuits Conference, A-SSCC 2009
CountryTaiwan
CityTaipei
Period16/11/0918/11/09

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