Simulation and Analysis of GaN MIS-HEMT Based Optimized Bootstrap Comparator Applied to DC-DC Buck Converter Feedback Loop

Rui Fan, Junzhe Tan, Yunsong Xu, Dechang Quan, Ruiqi Gong, Kain Lu Low, Pengju Cui, Jiangmin Gu*, Wen Liu

*Corresponding author for this work

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

Abstract

This paper presents a feedback circuit topologies based on AlGaN/GaN (Aluminum Gallium Nitride / Gallium Nitride) MIS-HEMT (Metal Insulator Semiconductor High Electron Mobility Transistor) to address the issue of abnormal output ripple in DC-DC buck converters and mitigate voltage overcharge at the operating point. The proposed circuit structure is simulated and calibrated using the ADS (Advanced Design System) platform. Subsequently, the circuit's output characteristics and principles of the optimized bootstrap comparator are analyzed. The results show that the maximum output voltage fluctuation is 0.05 V and the average fluctuation is less than 0.5 %, providing references and suggestions for the feasibility and application potential of the buck converter circuit structure in monolithic integrated GaN power converters.

Original languageEnglish
Title of host publication2024 IEEE International Conference on IC Design and Technology, ICICDT 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331517137
DOIs
Publication statusPublished - 2024
Event2024 IEEE International Conference on IC Design and Technology, ICICDT 2024 - Singapore, Singapore
Duration: 25 Sept 202427 Sept 2024

Publication series

Name2024 IEEE International Conference on IC Design and Technology, ICICDT 2024

Conference

Conference2024 IEEE International Conference on IC Design and Technology, ICICDT 2024
Country/TerritorySingapore
CitySingapore
Period25/09/2427/09/24

Keywords

  • AlGaN/GaN MIS-HEMT
  • Bootstrap Comparator
  • DC-DC Buck Convertor
  • Integrated Circuit

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