A high PF, high efficiency LED driver without off-chip inductor and capacitor
| Autor: | Kexu Sun, Xufeng Wu, Yahui Leng, Jianxiong Xi, Lenian He |
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| Rok vydání: | 2015 |
| Předmět: |
Engineering
Controller (computing) Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Power factor Inductor law.invention law Diode bridge Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electronic engineering 0501 psychology and cognitive sciences 050107 human factors business.industry 020208 electrical & electronic engineering 05 social sciences Electrical engineering Surfaces Coatings and Films Capacitor Hardware and Architecture Signal Processing Constant current Resistor business Voltage |
| Zdroj: | Analog Integrated Circuits and Signal Processing. 86:51-57 |
| ISSN: | 1573-1979 0925-1030 |
| DOI: | 10.1007/s10470-015-0647-3 |
| Popis: | A high power factor (PF), high efficiency light-emitting diode (LED) driver without off-chip inductor and capacitor is presented in this paper. The proposed driver consists of one resistor, one diode bridge and one controller integrated circuits (IC). The controller IC employs four LED strings and sequences their conduction to shape the output current in proportion to the input voltage. The controller IC was designed and implemented by using HHNEC 1 μm 700 V process. The experimental results show that high PF of 97.93 % and efficiency of 90.41 % under the input voltage of 220 V|rms utility voltage were obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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