• Title/Summary/Keyword: HV9910

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A Study on the Modeling and Simulation of LED Driver Using HV9910 IC (HV9910 IC를 사용한 LED driver 모델링 및 시뮬레이션에 관한 연구)

  • Han, Soo-Bin;Park, Suck-In;Jeong, Hak-Geun;Chae, Su-Yong;Song, Eu-Gine;Jung, Bong-Man
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.26 no.4
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    • pp.14-21
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    • 2012
  • This paper study a method of modeling and simulation of LED driver circuit for a design optimization. Simplified LED modeling is introduced and a driver IC, HV9910, is modeled by implementing the major function blocks. Circuit of buck type converter is constructed for simulation. Simulation includes not only the internal function of IC but also the various performance results such as LED array current control and dimming. Experiment results are also shown to prove the verification of its usage. This results show that the simulation approach is valid for a circuit optimization and a reduction of development time.

A Study on Methodology to Improve the Power Factor of the High Power LED Module (고출력 LED 모듈 역률 개선 방법 연구)

  • Lho, Young Hwan
    • Journal of IKEEE
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    • v.18 no.3
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    • pp.335-340
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    • 2014
  • Recently, LED (Light Emitting Diode) becomes to be useful to apply for the lightening sources in electric systems and the lightening equipment since the power is less consumed with high efficiency, and the size and the weight of LED are small and light, respectively. The LED is controlled with constant current and SMPS (Switching Mode Power Supply). It is necessary for the LED manufacturer to secure the fundamental technology of designing LED chip, and to study the methodology to improve the power factor (PF) and to design the operational circuit for the development of LED to reduce the power loss in the application of LED lightening. The direct AC (Alternating Current) LED driving circuit, HV9910, is widely used in the industry field. In this paper, it is to evaluate the improved methodology for the power factor and efficiency through simulations when PFC (Power Factor Correction) and Noise Filter are added to HV9910.

Modeling and Simulation of LED Driver (LED driver 모델링 및 시뮬레이션에 관한 연구)

  • Han, Soo-Bin;Park, Suck-In;Song, Eu-Gine;Jeoung, Hak-Geun;Jung, Bong-Man;You, Sung-Won
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2008.10a
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    • pp.113-115
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    • 2008
  • This paper shows the method of modeling and simulation of LED driver circuit. Simplified LED modeling is introduced and a driver IC, HV9910, is modeled by implementing the major function blocks. Circuit of buck type converter is constructed for simulation. Simulation includes the internal function of IC and various performances such as LED array current control and dimming. This results show that simulation approach is valid for circuit optimization and reduction of development time.

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