A Switched-Capacitor DC-DC Converter with >77.3% Efficiency and 80 ns Active Transient Response in 40 A - 4 mA Load Current Range

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

Abstract

This paper proposed a light-load efficient DC-DC converter with dual-lower-bound hysteresis control and frequency control for always-on Internet-of-Things applications. The proposed dual-lower-bound hysteresis control allows the frequency to change dynamically according to the load current, which enhances the light-load efficiency. Fast transient response is also provided for wake-up events in IoT devices. A fully integrated 1/2 capacitive DC-DC converter is implemented in 180 nm CMOS process to demonstrate this concept. The result shows that a 77.3% efficiency is guaranteed over 100x load current ranges and an 80 ns active response time is achieved in 0.04 - 4 mA load transient.

Original languageEnglish
Title of host publicationESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages355-358
Number of pages4
ISBN (Electronic)9781665437479
DOIs
Publication statusPublished - 2021 Sep 13
Event47th IEEE European Solid State Circuits Conference, ESSCIRC 2021 - Virtual, Online, France
Duration: 2021 Sep 62021 Sep 9

Publication series

NameESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings

Conference

Conference47th IEEE European Solid State Circuits Conference, ESSCIRC 2021
Country/TerritoryFrance
CityVirtual, Online
Period21/9/621/9/9

Keywords

  • capacitive dc-dc converter
  • charge pump
  • hysteresis control

ASJC Scopus subject areas

  • Artificial Intelligence
  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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