Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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Multi-Phase Buck Converter with Fast Transient Response

빠른 응답을 갖는 멀티페이스 벅 변환기

  • Lee, Yoon-Jae (Dept. of Electronics Engineering, Hanyang University) ;
  • Roh, Jeongjin (Dept. of Electronics Engineering, Hanyang University)
  • Received : 2016.09.20
  • Accepted : 2016.09.28
  • Published : 2016.09.30
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Abstract

Recently, efforts to maximize battery life in progress with an increase in the demand for portable devices. In this paper, we propose multi-phase buck converter with fast transient response. Multi-phase buck converter may be used for the output capacitor of small size because the ripple cancellation effect, it is possible to use an inductor having an inductance less. The portable device for quick change from standby mode to active 4-phase design structure was given a fast transient response. The proposed multi-phase buck converter was fabricated using a 0.18 um CMOS process and the supply voltage ranges from 2.7V to 3.3V, the maximum load current is 500mA and settling time is 10us.

최근 휴대용 기기의 수요가 증가함에 따라 배터리 사용시간을 최대화하기 위한 노력이 진행되고 있다. 본 논문에서는 빠른 과도 응답을 갖는 멀티페이스 벅 변환기를 제안한다. 멀티페이스 벅 변환기는 리플 상쇄 효과가 있기 때문에 작은 크기의 출력 캐패시터를 사용할 수 있고, 더 적은 인덕턴스를 갖는 인덕터의 사용이 가능하다. 휴대용 기기가 대기 모드에서 활성 모드로 빠르게 변할 수 있도록 4-페이스 구조로 설계하여 빠른 과도 응답을 갖게 하였다. 사용된 공정은 Hynix 0.18um CMOS 공정을 통해 제작되었고 공급전압 범위는 2.7~3.3V 이며, 최대 부하 전류는 500mA, settling time은 14us이다.

Keywords

References

  1. C. Y. Leung, P. K. T. Mok, K. N. Leung and M. Chan, "An integrated CMOS current-sensing circuit for low-voltage current-mode buck regulator," IEEE Trans. Circuits Syst. II, vol. 52, no. 7, pp. 394394, jul. 2005.
  2. A. J. Stratakos, S. Sanders, and R. Broderson, "A low-voltage CMOS DC-DC converter for a portable battery-operated system," IEEE Power Electronics Specialists Conference, vol. 1, pp. 619-626 , Jun. 1994.
  3. C. C. Yu, W. P. Wang, and B. D. Liu, "A new level converter for low-power applications," IEEE International Symposium. Circuit and Syst. vol. 1, no. 1, pp. 113-116, May. 2001.
  4. A. Abou-Alfotouh, A. Lotifi, and M. Orabi, "Compensation circuit design considerations for high frequency DC/DC buck converters with ceramic output capacitors," Applied Power Electronics Conference, pp. 736-742, Feb. 2007.
  5. W. Huang, "A new control for multi-phase buck converter with fast transient response," Applied Power Electronics Conference and Exposition, vol. 1, pp. 273-279, Mar. 2001.
  6. J. Roh, "High-Gain Class-AB OTA with Low quiescent Current," Analog Integrated Circuits and Signal Processing, vol.47, No.2, pp.225-228, Mar. 2006. https://doi.org/10.1007/s10470-006-4959-1
  7. Jinmin Seok, Jung-Duk Suh and Bai-sun Kong, "Fast Transient Response Techniques for PWM Buck Converter," Journal of IKEEE, vol.20, no.1, pp. 103-106, Mar. 2016. https://doi.org/10.7471/ikeee.2016.20.1.103