A Monolithic GaN-based Gate Driver for LLC-SRC with Three-Phase Startup Clamping Achieving 23.2μA IQ and 98.6% Peak Efficiency

Chi Yu Chen, Tz Wun Wang, Po Jui Chiu, Sheng Hsi Hung, Chang Lin Go, Xiao Quan Wu, Yu Ting Huang, Ke Horng Chen, Kuo Lin Zeng, Ying Hsi Lin, Shian Ru Lin, Tsung Yen Tsai

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

Abstract

To meet Energy Star and 80 Plus Titanium standards, the proposed hybrid gate driver reduces the quiescent current (IQ) to 23.2μA by reducing GaN leakage current. The proposed auto-precharge (APC) technique can reduce the leakage current (ILKG) in standby mode from a few milliamperes to 60.4μA, resulting in an efficiency greater than 92% at the entire output load. In addition, soft-start clamping (SSC) technique reduces the peak voltage from 2.51kVto 620V, safely reducing power consumption during soft-start. As a result, the LLC converter achieves a peak efficiency of 98.6%.

Original languageEnglish
Title of host publication2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350361469
DOIs
StatePublished - 2024
Event2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024 - Honolulu, United States
Duration: 16 Jun 202420 Jun 2024

Publication series

NameDigest of Technical Papers - Symposium on VLSI Technology
ISSN (Print)0743-1562

Conference

Conference2024 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2024
Country/TerritoryUnited States
CityHonolulu
Period16/06/2420/06/24

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