A Color LED Driver Implemented by the Active Clamp Forward Converter
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
2013
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| _version_ | 1876436052496875520 |
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| author | C. H. Chang |
| author_facet | C. H. Chang |
| contents | A Color LED Driver Implemented by the Active Clamp Forward Converter C. H. Chang H. L. Cheng C. A. Cheng E. C. Chang Ingeniería Light emitting diode (LED) active clamp forward converter sequential color display (SCD) Because light emitting diodes (LEDs) have the advantages of dc working voltage, high luminescent efficiency, short ignition time, high reliability and pollution free, they have substituted for incandescent bulbs and fluorescent lamps gradually. In order to simplify circuit complexity, an active clamp forward converter with the sequential color display (SCD) control is proposed to drive red, green and blue (RGB) LED arrays. The proposed converter has zero-voltage switching (ZVS) operations of both the main switch and the auxiliary switch, resulting in high system efficiency. Driving RGB LED arrays sequentially by one converter can save components and reduce cost significantly. Additionally, the pulse-width modulation (PWM) control is applied to achieve a large chromaticity variation. The circuit operations are analyzed in detail and the circuit parameters are designed based on the practical considerations. Finally, an illustrative example is implemented to demonstrate the feasibility and validity of the proposed LED driver. 2013 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47426225012 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.2 Vol.11 |
| format | Artículo científico |
| id | redalyc_47426225012 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | A Color LED Driver Implemented by the Active Clamp Forward Converter C. H. Chang Ingeniería Light emitting diode (LED) active clamp forward converter sequential color display (SCD) A Color LED Driver Implemented by the Active Clamp Forward Converter C. H. Chang H. L. Cheng C. A. Cheng E. C. Chang Ingeniería Light emitting diode (LED) active clamp forward converter sequential color display (SCD) Because light emitting diodes (LEDs) have the advantages of dc working voltage, high luminescent efficiency, short ignition time, high reliability and pollution free, they have substituted for incandescent bulbs and fluorescent lamps gradually. In order to simplify circuit complexity, an active clamp forward converter with the sequential color display (SCD) control is proposed to drive red, green and blue (RGB) LED arrays. The proposed converter has zero-voltage switching (ZVS) operations of both the main switch and the auxiliary switch, resulting in high system efficiency. Driving RGB LED arrays sequentially by one converter can save components and reduce cost significantly. Additionally, the pulse-width modulation (PWM) control is applied to achieve a large chromaticity variation. The circuit operations are analyzed in detail and the circuit parameters are designed based on the practical considerations. Finally, an illustrative example is implemented to demonstrate the feasibility and validity of the proposed LED driver. 2013 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47426225012 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.2 Vol.11 |
| title | A Color LED Driver Implemented by the Active Clamp Forward Converter |
| topic | Ingeniería Light emitting diode (LED) active clamp forward converter sequential color display (SCD) |
| url | https://www.redalyc.org/articulo.oa?id=47426225012 |