A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control

Jing Teng Lin, Jiunn Hung Shiau, Chien-Hung Tsai

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

Abstract

In this paper, a novel state ACP (adaptive current position) is presented, which allows Buck converter to achieve fast load transient response. The PWM (pulse width modulation) and PFM (pulse frequency modulation) modes increase light-load efficiency and maintain good regulation over a wide load range. When the load rapidly changes from light to heavy, ACP can enhance the transient response, to minimize the settling time and suppresses under/overshoot voltage. Unlike other system, the proposed controller can operate without current-sensor. ACP can force the inductor current to catch up with load current quickly. Switch on high-side power MOS a period of time then change to PWM state. By using the information from pseudo current roof, the exact on-time and off-time at different Vin can be calculated. Also, we can speculate the time to execute ACP without current-sensor. Simulation and experimental results demonstrate the superior dynamic response over that of a conventional digital Buck converter.

Original languageEnglish
Title of host publicationTechnical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014
PublisherIEEE Computer Society
ISBN (Print)9781479927760
DOIs
Publication statusPublished - 2014 Jan 1
Event2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014 - Hsinchu, Taiwan
Duration: 2014 Apr 282014 Apr 30

Publication series

NameTechnical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014

Other

Other2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014
CountryTaiwan
CityHsinchu
Period14-04-2814-04-30

Fingerprint

Position control
Electric current control
DC-DC converters
Transient analysis
Pulse width modulation
Pulse time modulation
Sensors
Roofs
Dynamic response
Switches
Controllers
Electric potential

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

Cite this

Lin, J. T., Shiau, J. H., & Tsai, C-H. (2014). A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control. In Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014 [6834887] (Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014). IEEE Computer Society. https://doi.org/10.1109/VLSI-DAT.2014.6834887
Lin, Jing Teng ; Shiau, Jiunn Hung ; Tsai, Chien-Hung. / A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control. Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014. IEEE Computer Society, 2014. (Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014).
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abstract = "In this paper, a novel state ACP (adaptive current position) is presented, which allows Buck converter to achieve fast load transient response. The PWM (pulse width modulation) and PFM (pulse frequency modulation) modes increase light-load efficiency and maintain good regulation over a wide load range. When the load rapidly changes from light to heavy, ACP can enhance the transient response, to minimize the settling time and suppresses under/overshoot voltage. Unlike other system, the proposed controller can operate without current-sensor. ACP can force the inductor current to catch up with load current quickly. Switch on high-side power MOS a period of time then change to PWM state. By using the information from pseudo current roof, the exact on-time and off-time at different Vin can be calculated. Also, we can speculate the time to execute ACP without current-sensor. Simulation and experimental results demonstrate the superior dynamic response over that of a conventional digital Buck converter.",
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Lin, JT, Shiau, JH & Tsai, C-H 2014, A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control. in Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014., 6834887, Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014, IEEE Computer Society, 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014, Hsinchu, Taiwan, 14-04-28. https://doi.org/10.1109/VLSI-DAT.2014.6834887

A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control. / Lin, Jing Teng; Shiau, Jiunn Hung; Tsai, Chien-Hung.

Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014. IEEE Computer Society, 2014. 6834887 (Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014).

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

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Lin JT, Shiau JH, Tsai C-H. A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control. In Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014. IEEE Computer Society. 2014. 6834887. (Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014). https://doi.org/10.1109/VLSI-DAT.2014.6834887