Area-Saving and High-Efficiency RGB LED Driver with Adaptive Driving Voltage and Energy-Saving Technique
Abstract
:1. Introduction
2. Proposed Adaptive Driving Voltage and Energy-Saving Technique
3. Circuit Implementation
3.1. Switching Linear Current Regulators
3.2. Adaptive Driving Voltage and Energy-Saving Control Circuit
3.3. Sawtooth Generator
3.4. PWM Control Circuit
4. Experimental Results
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Specifications | [5] | [17] | [26] | [27] | This Work |
---|---|---|---|---|---|
Technology | 0.35 μm CMOS | 0.5 μm CMOS | 0.35 μm CMOS | 0.35 μm BCD | 0.35 μm CMOS |
Active Area (mm2) | 0.89 | 0.403 | N/A | N/A | 0.3 |
Input Voltage (V) | 4.5~5 | 2.8~4.2 | 7 | 6~27 | 5~7 |
Output Voltage (V) | N/A | 2.8~4.2 | 10~14 | 60 | 8~14 |
Driving Capability | 1 LED | 1 LED | N/A | 24 LEDs | 6~8 LEDs |
Driving Current (mA) | 220 | 20 | 200 | 30 | 100 |
Operating Freq. (kHz) | 500 | 200 | 100 | 39 | 100 |
Adaptive Control | No | No | Yes | Yes | Yes |
Energy-Saving Control | No | No | No | No | Yes |
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Hsu, Y.-C.; Lin, J.-Y.; Chen, C.C.-P. Area-Saving and High-Efficiency RGB LED Driver with Adaptive Driving Voltage and Energy-Saving Technique. Energies 2018, 11, 1422. https://doi.org/10.3390/en11061422
Hsu Y-C, Lin J-Y, Chen CC-P. Area-Saving and High-Efficiency RGB LED Driver with Adaptive Driving Voltage and Energy-Saving Technique. Energies. 2018; 11(6):1422. https://doi.org/10.3390/en11061422
Chicago/Turabian StyleHsu, Yi-Chieh, Jing-Yuan Lin, and Charlie Chung-Ping Chen. 2018. "Area-Saving and High-Efficiency RGB LED Driver with Adaptive Driving Voltage and Energy-Saving Technique" Energies 11, no. 6: 1422. https://doi.org/10.3390/en11061422