Improvement of Power-Conversion Efficiency of a DC–DC Boost Converter Using a Passive Snubber Circuit
SCIE
SCOPUS
- Title
- Improvement of Power-Conversion Efficiency of a DC–DC Boost Converter Using a Passive Snubber Circuit
- Authors
- Yun, JJ; Choe, HJ; Hwang, YH; Park, YK; Kang, B
- Date Issued
- 2012-04
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGI
- Abstract
- This paper proposes a method of improving the power-conversion efficiency of a direct-current-direct-current boost converter. The proposed method uses a passive snubber circuit, which consists of two inductors, a capacitor, and a diode, to reduce switching loss. The proposed boost converter was built and tested on 42-, 47-, and 55-in edge-lit light-emitting-diode (LED) backlight units (BLUs). The power-conversion efficiency for an input voltage of 24 V was measured as 96%, 95.1%, and 93.7% for the 42-, 47-, and 55-in edge-lit LED BLUs, respectively; these values were 2.3%, 2.2%, and 2% higher than those of the conventional boost converters in the corresponding BLUs. The proposed boost converter ensured reliable operation and high-power efficiency under a +/- 10% variation of input voltage and a +/- 20% variation of the passive snubber component values.
- Keywords
- Direct-current-direct-current (dc-dc) power conversion; light-emitting-diode (LED) displays; snubbers; BACKLIGHT DRIVING SYSTEM; HIGH-VOLTAGE GAIN; LCD PANELS; REVERSE-RECOVERY; DESIGN; IMPLEMENTATION; DRIVERS; DISPLAY; STRESS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16010
- DOI
- 10.1109/TIE.2011.2141095
- ISSN
- 0278-0046
- Article Type
- Article
- Citation
- IEEE Transactions on Industrial Electronics, vol. 59, no. 4, page. 1808 - 1814, 2012-04
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