Design of a Switched-Capacitor DC-DC Converter with Various Outputs

• Eguchi Kei

  Kumamoto National College of Technology

• Ueno Fumio

  Sojo University

• Inoue Takahiro

  Kumamoto University

Abstract

This paper introduces a family of ring-type switched-capacitor (SC) converters, which produces 0.75˜2.3 V outputs by being stepped-down from a 3.6 V input. The circuit consists of 2 series-connected DC-DC conversion blocks. Since the input voltage is converted twice by these blocks, the proposed circuit can provide more various types of output-voltages than conventional ring-type converters. Furthermore, the efficiency and the hardware-cost are improved since the number of driver circuits can be reduced. As an example, the circuit is designed with 17 types of output voltages in the range of 0.75˜2.3 V. The SPICE simulations show that the power efficiency is more than 80 % in the output current range from about 110 to 360 mA.

Journal

• IEEJ Transactions on Electronics, Information and Systems

  IEEJ Transactions on Electronics, Information and Systems 124 (4), 1046-1047, 2004

  The Institute of Electrical Engineers of Japan

Keywords

• DC-DC converters
• switched-capacitor circuits
• inductor-less circuits
• discrete-time circuits

Details

• CRID: 1390001204604592512
• NII Article ID: 10012703848
• NII Book ID: AN10065950
• DOI: 10.1541/ieejeiss.124.1046
• ISSN: 13488155
• ISSN: 03854221
• Web Site: http://www.jstage.jst.go.jp/article/ieejeiss/124/4/124_4_1046/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed