A fast-transient quasi-V 2 switching buck regulator using AOT control

Chun Sheng Huang; Chen Yu Wang; Jia Hui Wang; Chien Hung Tsai

doi:10.1109/ASSCC.2011.6123597

A fast-transient quasi-V ² switching buck regulator using AOT control

Chun Sheng Huang, Chen Yu Wang, Jia Hui Wang, Chien Hung Tsai

Department of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

12 Citations (Scopus)

Abstract

A switching regulator with quasi-V ² adaptive on-time (AOT) control, that provides a fast load transient response is proposed. A feed-forward path network allows the proposed switching regulator to achieve a fast transient response and stable operation without requiring an output capacitor with a large equivalent series resistance. The proposed AOT controller makes the switching frequency pseudo fixed in continuous conduction mode and works in pulse-frequency modulation mode under ultra-light load conditions. The AOT controller adjusts the on-time according to the supply voltage load current conditions. The measurement results verify that the switching regulator can operate under load currents of 5-800 mA for supply voltages of 3.3-4.2 V and an output voltage of 1.2 V. The recovery time is 3.6μs and the voltage drop is 55 mV when the load current is increased from 5 to 750 mA.

Original language	English
Title of host publication	2011 Proceedings of Technical Papers
Subtitle of host publication	IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011
Pages	53-56
Number of pages	4
DOIs	https://doi.org/10.1109/ASSCC.2011.6123597
Publication status	Published - 2011 Dec 1
Event	7th IEEE Asian Solid-State Circuits Conference, A-SSCC 2011 - Jeju, Korea, Republic of Duration: 2011 Nov 14 → 2011 Nov 16

Publication series

Name	2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011

Other

Other	7th IEEE Asian Solid-State Circuits Conference, A-SSCC 2011
Country/Territory	Korea, Republic of
City	Jeju
Period	11-11-14 → 11-11-16

All Science Journal Classification (ASJC) codes

Hardware and Architecture
Electrical and Electronic Engineering

Access to Document

10.1109/ASSCC.2011.6123597

Cite this

Huang, C. S., Wang, C. Y., Wang, J. H., & Tsai, C. H. (2011). A fast-transient quasi-V ² switching buck regulator using AOT control. In 2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011 (pp. 53-56). [6123597] (2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011). https://doi.org/10.1109/ASSCC.2011.6123597

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title = "A fast-transient quasi-V 2 switching buck regulator using AOT control",

abstract = "A switching regulator with quasi-V 2 adaptive on-time (AOT) control, that provides a fast load transient response is proposed. A feed-forward path network allows the proposed switching regulator to achieve a fast transient response and stable operation without requiring an output capacitor with a large equivalent series resistance. The proposed AOT controller makes the switching frequency pseudo fixed in continuous conduction mode and works in pulse-frequency modulation mode under ultra-light load conditions. The AOT controller adjusts the on-time according to the supply voltage load current conditions. The measurement results verify that the switching regulator can operate under load currents of 5-800 mA for supply voltages of 3.3-4.2 V and an output voltage of 1.2 V. The recovery time is 3.6μs and the voltage drop is 55 mV when the load current is increased from 5 to 750 mA.",

author = "Huang, {Chun Sheng} and Wang, {Chen Yu} and Wang, {Jia Hui} and Tsai, {Chien Hung}",

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series = "2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011",

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Huang, CS, Wang, CY, Wang, JH & Tsai, CH 2011, A fast-transient quasi-V ² switching buck regulator using AOT control. in 2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011., 6123597, 2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011, pp. 53-56, 7th IEEE Asian Solid-State Circuits Conference, A-SSCC 2011, Jeju, Korea, Republic of, 11-11-14. https://doi.org/10.1109/ASSCC.2011.6123597

A fast-transient quasi-V ² switching buck regulator using AOT control. / Huang, Chun Sheng; Wang, Chen Yu; Wang, Jia Hui et al.
2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011. 2011. p. 53-56 6123597 (2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - A switching regulator with quasi-V 2 adaptive on-time (AOT) control, that provides a fast load transient response is proposed. A feed-forward path network allows the proposed switching regulator to achieve a fast transient response and stable operation without requiring an output capacitor with a large equivalent series resistance. The proposed AOT controller makes the switching frequency pseudo fixed in continuous conduction mode and works in pulse-frequency modulation mode under ultra-light load conditions. The AOT controller adjusts the on-time according to the supply voltage load current conditions. The measurement results verify that the switching regulator can operate under load currents of 5-800 mA for supply voltages of 3.3-4.2 V and an output voltage of 1.2 V. The recovery time is 3.6μs and the voltage drop is 55 mV when the load current is increased from 5 to 750 mA.

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