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

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

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

12 Citations (Scopus)


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 languageEnglish
Title of host publication2011 Proceedings of Technical Papers
Subtitle of host publicationIEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011
Number of pages4
Publication statusPublished - 2011 Dec 1
Event7th IEEE Asian Solid-State Circuits Conference, A-SSCC 2011 - Jeju, Korea, Republic of
Duration: 2011 Nov 142011 Nov 16

Publication series

Name2011 Proceedings of Technical Papers: IEEE Asian Solid-State Circuits Conference 2011, A-SSCC 2011


Other7th IEEE Asian Solid-State Circuits Conference, A-SSCC 2011
Country/TerritoryKorea, Republic of

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering


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