A high effieciency DC/DC boost regulator with adaptive off/on-time control

Chen Yu Wang, Jhih Sian Guo, Chi Yuan Huang, Chien-Hung Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

An inductor switching DC/DC boost regulator with adaptive off/on time (AOOT) control is proposed in this paper. This system works with adaptive-off-time control in CCM while adaptive-on-time control in DCM. The burden caused by the switching frequency variation is reduced due to the quasi-fixed frequency switching by adaptive-off-time modulation under heavy-load condition. In DCM, adaptive-on-time takes over the operation and improves the power efficiency under light-load condition. In another way, an on-chip sense-FET current sensor is used to decrease the conduction loss caused by the conventional sensing resistor on power stage. The AOOT control boost regulator was implemented with a 0.25 μm high voltage (HV) CMOS process. For conversion specification of 5 V to 12V with a 0∼300mA load range, peak efficiency of 92.5% is achieved. Measurement results show that the switching frequency keeps constant at 950 kHz in CCM.

Original languageEnglish
Title of host publication2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013
DOIs
Publication statusPublished - 2013 Aug 15
Event2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013 - Hsinchu, Taiwan
Duration: 2013 Apr 222013 Apr 24

Publication series

Name2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013

Other

Other2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013
CountryTaiwan
CityHsinchu
Period13-04-2213-04-24

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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  • Cite this

    Wang, C. Y., Guo, J. S., Huang, C. Y., & Tsai, C-H. (2013). A high effieciency DC/DC boost regulator with adaptive off/on-time control. In 2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013 [6533804] (2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013). https://doi.org/10.1109/VLDI-DAT.2013.6533804