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http://dx.doi.org/10.6113/TKPE.2013.18.4.397

The Design of Long-life and High-efficiency Passive LED Drivers using LC Parallel Resonance  

Lee, Eun-Soo (Dept. of Nuclear and Quantum Eng., KAIST)
Choi, Bo-Hwan (Dept. of Nuclear and Quantum Eng., KAIST)
Cheon, Jun-Pil (Dept. of Nuclear and Quantum Eng., KAIST)
Kim, Bong-Cheol (Optomind Inc.)
Rim, Chun-Taek (Dept. of Nuclear and Quantum Eng., KAIST)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.18, no.4, 2013 , pp. 397-402 More about this Journal
Abstract
This paper proposes a new passive type LED driver which satisfies the standard of power factor (PF) and total harmonic distortion (THD). The proposed passive LED driver also has high-efficiency and long-life time characteristics compared to active LED driver which is composed of op-amp, switches and so on. By using just passive components such as inductor, capacitor, and diode, it has resolved extremely short-life time and low-efficiency problems of previous LED drivers. It has achieved PF of 0.99, THD of 16.4 %, and the total efficiency of 95 %. The proposed passive LED driver is fully analyzed and verified by simulations and experiments, which results are in good agreement each other.
Keywords
passive LED driver; high-efficiency; long-life time; power factor; total harmonic distortion;
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