Abstract
This paper proposes a highly power-efficient light-emitting diode (LED) back-light power supply for liquid crystal display (LCD). The proposed converter integrates the power factor correction (PFC) circuit with the dc-dc converter. It provides an isolated dc voltage without using any full-bridge diode rectifier. Conduction losses are reduced by eliminating the full-bridge diode rectifier. Switching power losses are also reduced by achieving zero-voltage switching (ZVS) operation of power switches. By reducing power losses, the power efficiency of the LED back-light power supply can be improved. The experimental results are presented to verify the feasibility of the proposed converter for a 100 W LED back-light power.
| Original language | English |
|---|---|
| Article number | 6488768 |
| Pages (from-to) | 382-387 |
| Number of pages | 6 |
| Journal | IEEE/OSA Journal of Display Technology |
| Volume | 9 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2013 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Back-light power supply
- dc-dc converter
- light-emitting diode (LED)
- liquid crystal display (LCD)
- power factor correction (PFC)
Quacquarelli Symonds(QS) Subject Topics
- Materials Science
- Engineering - Electrical & Electronic
- Engineering - Petroleum
- Physics & Astronomy
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