Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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The Design of BCM based Power Factor Correction Control IC for LED Applications

LED 응용을 위한 BCM 방식의 Power Factor Correction Control IC 설계

  • Kim, Ji-Man (Department of Nano Systems Eng., Center for Nano Manufacturing) ;
  • Jung, Jin-Woo (Korea Electrotechnology Research Institute) ;
  • Song, Han-Jung (Department of Nano Systems Eng., Center for Nano Manufacturing)
  • 김지만 (인제대학교 나노시스템공학과) ;
  • 정진우 (한국전기연구원) ;
  • 송한정 (인제대학교 나노시스템공학과)
  • Received : 2011.04.11
  • Accepted : 2011.06.09
  • Published : 2011.06.30
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Abstract

In this paper, a power factor correction (PFC) control circuit using single stage boundary conduction mode(BCM) for the 400V. 120W LED drive application has been designed. The proposed control circuit is aimed for improvement of the power factor correction and reduction of the total harmonic distortion. In this circuit, a new CMOS multiplier structure is used instead of a conventional BJT(bipolar junction transistor) based multiplier where has a relatively large area. The CMOS multiplier can bring 30 % reduced chip area, competitive die cost in comparison with the conventional BJT multiplier.

본 논문에서는 400V, 120W 급 LED 구동을 위한 1단 전류 경계모드(Boundary Condition Mode) 제어방식의 역률 개선 제어회로를 설계하였다. 제안하는 제어회로는 역률 개선 및 고조파 발생을 감소시키는 기능을 가지고 있으며, 또한 PFC(Power Factor Correction)회로 내에서 상대적으로 많은 면적을 차지하는 기존의 바이폴라 트랜지스터 구조 대신 새로운 CMOS 회로로 설계하였다. 기존대비, 약 30% 정도의 레이아웃 면적을 줄이게 되었고, 상용화 시 칩의 가격 경쟁력이 클 것으로 사료된다.

Keywords

References

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