Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
권호 표지
DOI QR코드

DOI QR Code

Design of Single-Inductor Dual-Output Boost-Boost DC-DC Converter with Dual Feedback Loop Based on Relative Sawtooth Generator

Dead-time을 갖는 톱니파 발생기를 이용한 이중 피드백 루프 기반 단일 인덕터 이중 출력 승압형 변압기 설계

  • Yun, Dam (College of Information and Communication Engineering, Sungkyunkwan University) ;
  • Kim, Dong-Young (College of Information and Communication Engineering, Sungkyunkwan University) ;
  • Lee, Kang-Yoon (College of Information and Communication Engineering, Sungkyunkwan University)
  • Received : 2014.04.21
  • Accepted : 2014.05.22
  • Published : 2014.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents a control method of Single-Inductor Dual-Output DC-DC Converter using Common mode feedback and differential feedback loops. To generate duty used for differential mode feedback loop, this paper propose relative sawtooth circuit using current divider circuit which makes ramp signal with variable dead-time. Two outputs of the Single-Inductor Dual-Output DC-DC Converter are specified for 2.8 V and 4.2 V with input voltage 2.5 V. The maximum conversion efficiency of designed SIDO DC-DC Converter is 95% at total output power of 539mW. Cross regulations of Boost1 and Boost2 are 3.57% and 4% each, when increasing twice times output current.

이 논문은 Dead-time을 갖는 톱니파 발생기를 이용하여 공통모드와 차동모드 피드백 루프를 구현한 Single-Inductor Dual-Output DC-DC Converter 설계에 관한 내용을 제시하고 있다. 제어회로에는 공통모드와 차동모드 피드백 루프를 Dead-time을 갖는 톱니파 발생기를 이용하여 동시에 사용하였다. 차동모드 피드백 루프에서 duty를 생성하기 위해서 전류 분배기 회로를 사용하여 공통모드 피드백에 의한 duty에 따라 dead-time이 유동적으로 변하는 톱니파형을 만드는 회로인 Dead-time을 갖는 톱니파 발생기를 추가하여 차동모드 피드백 회로를 구성하였다. 0.35um 공정을 사용하여 설계한 SIDO DC-DC Converter는 2.5V 입력으로부터 2.8V와 4.2V의 전압을 출력하며 최대 전력변환 효율은 95%이다. 출력간의 Cross regulation은 출력전류가 2배씩 증가할 경우 Boost1과 Boost2의 출력전압은 각각 3.57%, 4% 수준을 보이고 있다.

Keywords

References

  1. Chia_Min Chen, Te-Wen Liao, Kai-Hsiu Hsu, Chung-chig Hung, "A Single-Inductor Multiple-Output Boost Converter With Freewheel Charge-Pump Convtrol", Department of Electrical Engineering, National Chiao Tung University, Hsinchu, Taiwan.
  2. Pradipta Partra, Jyotirmoy Ghosh, Amit Patra, "Control Scheme for Reduced Cross-Regulation in Single-Inductor Multiple-Output DC-DC Converters", IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, Vol. 60, no.11, 2013
  3. Pradipta Partra, Amit Partra, "A Single-Induct or Multiple-Output Switcher With Simultaneous Buck, Boost, and Inverted Outputs", IEEE TRAN SACTIONS ON POWER ELECTRONICS, Vol. 27, no. 4, 2012
  4. Weiwei Xu, Ye Li, Xiaohan Gong, Zhilang Hong, "A Dual-Mode Single-Inductor Dual-Output Switching Converter With Small Ripple", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 25, no. 3, 2010.
  5. Munir A.Al-Absi, "Low-Voltage and Low-Po wer CMOS Current-mode Divider and 1/x Circuit", International Conference on Electronic Devices, Systems and Applications, pp.245-247, 2010