전자공학회논문지 IE

The Institute of Electronics and Information Engineers (대한전자공학회)
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PFM-Mode Boost DC-DC Convertor for Mobile Multimedia Application

휴대용 멀티기기를 위한 PFM방식의 승압형 DC-DC 변환기

  • Kim, Ji-Man (Department of Nano System Eng, Inje University) ;
  • Park, Yong-Su (Department of Elecrtonics, Chung Cheong University) ;
  • Song, Han-Jung (Department of Nano System Eng, Inje University)
  • 김지만 (인제대학교 나노시스템공학과) ;
  • 박용수 (충청대학 전기전자공학부) ;
  • 송한정 (인제대학교 나노시스템공학과)
  • Received : 2010.05.11
  • Published : 2010.09.25
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Abstract

In this paper, we describe a CMOS DC-DC converter with a variable output voltage(5-7V @100mA) for a portable battery-operated system applications. The proposed DC-DC converter is used along with a Pulse-Frequency Modulation (PFM) method and consists of reference circuit, a feedback resistor, a controller, and an internal oscillator. The integrated DC-DC converter with two external passive components(L,C) has been designed and fabricated on a 0.5um 2-poly 3-metal CMOS process and could be applied to the Personal Digital Assistants(PDA), cellular Phone, Laptop Computer, etc.

본 논문은 휴대용 배터리 구동시스템을 위한 다양한 출력전압(5-7V,100mA)을 가지는 CMOS DC-DC 변환기를 제안한다. 제안하는 DC-DC 변환기는 Pulse-Frequency Modulation (PFM) 방식을 사용하였고, 기준전압회로, 피드백 저항, 컨트롤러, 내부 파형발생기를 사용하였다. 2개의 외부 수동 소자들 (L,C)을 가진 집적화된 DC-DC 변환기는 0.5um 2-poly 4-metal CMOS 공정에서 설계 되었고 PDA, 휴대폰, 노트북 등에 적용 가능하다.

Keywords

References

  1. P.L. Miribel-Catala, M.Puig-Vidal, J.S. Marti, P. Goyhenetche, X. Q. Nguyen, "An integrated digital PFM dc-dc boost converter for a power management application-a RGB backlight LED system driver," IEEE industrial Electronics Society, vol, 1, pp.37-42. Nov. 2002.
  2. 김희준, "스위치 모드 파워 서플라이", 성안당, 1993.
  3. B. Sahu and G. A. Rincon-Mora, "An accurate, low-voltage, CMOS switching power supply with adaptive on-time pulse-frequency modulation (PFM) control," IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 54, no. 2, pp. 312-321, Feb. 2007.
  4. F. L. Luo, "Six Self-Lift DC-DC Converters, Voltage Lift Technique", IEEE Trans. Ind. Elctrons., Vol. 48, pp. 1268-1272, Dec. 2001. https://doi.org/10.1109/41.969408
  5. Richard Cushing "DDS(Directly Disgital Synthesizer)" Analog Devices 1995.
  6. J.A cobos, O. Garcia, J. Uceda, F. Aldana, , "Optimizied Synchronous Retification srage for Low Output Voltage DC/DC Convertr," IEEE Applied Power Electrics Confeence (APEC94), 1994.
  7. Shih-Chieh liao, cia, "Low current pulsefrequency modulation converter,cation srage for Low Output Voltage DC/DC Converter," M.S. thesis, Feng-Chia University, June, 2004.
  8. T. R. Ying, W. H. Ki. M. C, "Area-Effiecient CMOS Charge Pumps for LCD Drivers," IEEE Journal of Solid-State circuit, Vol.38, No. 10, October 2003.
  9. Robert W. Erickson, Dragan Maksimovic, Fundamentals of Power Electronics Second Edition, KluwerAcademic, 2002.
  10. S. E. Lee, W. S. Oh. "Personal Communication System Hand-set with Oraganic Light Emitting Diode Display." Accepted on The 22nd International Display Research Conference, October. 2002.