Earticle

초록

영어

This paper presents an offline current-mode pulse frequency modulation (PFM) controller for low power residential LED lighting, which has a better performance and a simplified structure. A novel controller which contains Constant Current (CC) regulation technique based on auxiliary winding feedback and pulse frequency modulation (PFM) mode basing on the flyback structure is presented, which simplifies the application environment. Also, an input power adjusting technique is introduced which improves the working stability. These techniques are validated by using an integrated circuit designed in 0.5-μm 700V BCD process. In the constant area, when the input AC voltage is from 85V-220V and the load resistance is from 3Ω to 4.7Ω, the test results of actual application circuit show the constant current point is about 1A and the current ripple is about ±4%.

목차

Abstract
 1. Introduction
 2. Method Description
 3. The Design of PFM CC Control Circuit
  3.1. V/I Converting Circuit
  3.2. Design of the Oscillator
 4. Setting of Constant Current Point
 5. Experimental Results
 6. Conclusion
 Acknowledgements
 References

키워드

저자

• Yong-Rui Zhao [ Institute of Electronic CAD, Xidian University, Xi’an, Shaanxi 710071, China ]
• Xin-Quan Lai [ Key Lab of High-Speed Circuit Design and EMC, Ministry of Education, Xidian University, Xi’an, Shaanxi 710071, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Smart Home

• 간기

  격월간

• pISSN

  1975-4094

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605