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

研究成果: Conference contribution

4 引文 斯高帕斯(Scopus)

摘要

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.

原文English
主出版物標題2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013
DOIs
出版狀態Published - 2013 八月 15
事件2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013 - Hsinchu, Taiwan
持續時間: 2013 四月 222013 四月 24

出版系列

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

Other

Other2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013
國家/地區Taiwan
城市Hsinchu
期間13-04-2213-04-24

All Science Journal Classification (ASJC) codes

  • 硬體和架構
  • 電氣與電子工程

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