A DC-DC Converter with 30% Reduced Undershoot Using Slew-Rate-Based Adaptive Frequency Control

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a buck converter architecture that dynamically adjusts its switching frequency based on the output voltage slew rate to enhance transient performance while maintaining high power efficiency. A compact analog circuit is used to detect rapid voltage changes and enables high-frequency switching only during fast load transients. This selective frequency scaling minimizes switching losses during steady-state conditions and improves responsiveness under dynamic loads. Simulation results demonstrate that the proposed technique reduces voltage undershoot by approximately 29% compared to conventional fixed-frequency control schemes.

Original languageEnglish
Title of host publication2025 International Technical Conference on Circuits/Systems, Computers, and Communications, ITC-CSCC 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331553630
DOIs
StatePublished - 2025
Externally publishedYes
Event2025 International Technical Conference on Circuits/Systems, Computers, and Communications, ITC-CSCC 2025 - Seoul, Korea, Republic of
Duration: 7 Jul 202510 Jul 2025

Publication series

Name2025 International Technical Conference on Circuits/Systems, Computers, and Communications, ITC-CSCC 2025

Conference

Conference2025 International Technical Conference on Circuits/Systems, Computers, and Communications, ITC-CSCC 2025
Country/TerritoryKorea, Republic of
CitySeoul
Period7/07/2510/07/25

Keywords

  • Buck converter
  • PMIC
  • slew rate detection
  • switching frequency
  • transient response

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