T33.5 - A Real-Time Variation Control of Deadtime in GaN-Based Bidirectional Buck-Boost Converter for Lithium-Ion Battery Formation System

Thursday, March 20, 2025

11:30 AM – 11:50 AM ET

Location: Level Three, A302

Technical Lecture Presenter(s)

Jong-Hun Lim (he/him/his)

Sungkyunkwan University

Presentation Paper

Co-Author(s)

GH

Go Woon Heo

Sungkyunkwan University
JL

Je-Yeong Lim

Sungkyunkwan University
Dong Hwan Kim, PhD cource

Sunkyunkwan University
BL

Byoung Kuk Lee

SungKyunKwan University

This digest proposes a real-time dead-time control method based on optimized switching time delay calculations, considering the dynamic characteristics of the battery formation system. The proposed technique reduces reverse conduction loss by controlling the deadtime during dynamic transitions between charging and discharging operations in both directions. Experimental verification demonstrated an average efficiency improvement of 0.87% in a 5V/100A battery formation device and a significant temperature reduction of up to 11.5°C in the synchronous switch, thereby enhancing overall system performance in charging mode operation.