A 10MHz 2mA-800mA 0.5V-1.5V 90% peak efficiency time-based buck converter with seamless transition between PWM/PFM modes

Seong Joong Kim, Wooseok Choi, Robert Pilawa-Podgurski, Pavan Kumar Hanumolu

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

Abstract

We present a 10MHz buck converter with enhanced light load efficiency achieved by combining time-based PWM control with PFM. The proposed seamless transition technique provides additional degree of freedom to extend high efficiency regime across a wider range of load current. Fabricated in a 65nm CMOS, the prototype achieves 90% peak efficiency and > 80% efficiency over Iload range of 2mA to 800mA. Vo changes by less than 40mV during PWM to PFM transitions.

Original languageEnglish (US)
Title of host publication38th Annual Custom Integrated Circuits Conference
Subtitle of host publicationA Showcase for Integrated Circuit Design in Silicon Hills, CICC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509051915
DOIs
StatePublished - Jul 26 2017
Event38th Annual Custom Integrated Circuits Conference, CICC 2017 - Austin, United States
Duration: Apr 30 2017May 3 2017

Publication series

NameProceedings of the Custom Integrated Circuits Conference
Volume2017-April
ISSN (Print)0886-5930

Other

Other38th Annual Custom Integrated Circuits Conference, CICC 2017
CountryUnited States
CityAustin
Period4/30/175/3/17

Keywords

  • PFM
  • PWM
  • light load efficiency
  • time-based control

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Kim, S. J., Choi, W., Pilawa-Podgurski, R., & Hanumolu, P. K. (2017). A 10MHz 2mA-800mA 0.5V-1.5V 90% peak efficiency time-based buck converter with seamless transition between PWM/PFM modes. In 38th Annual Custom Integrated Circuits Conference: A Showcase for Integrated Circuit Design in Silicon Hills, CICC 2017 [7993619] (Proceedings of the Custom Integrated Circuits Conference; Vol. 2017-April). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC.2017.7993619