A Review of the Impact of Dead-time Control on Switching Device Efficiency Analysis and Optimisation Strategies

Xiang Li

doi:10.6919/ICJE.202509_11(9).0004

Authors

Xiang Li

DOI:

https://doi.org/10.6919/ICJE.202509_11(9).0004

Keywords:

Deadband Control; Switching Losses; Power Electronics; Optimisation Strategies; Wide-Bandwidth Devices; Adaptive Control.

Abstract

Dead time is a key factor affecting the efficiency and reliability of power electronic systems, especially in switching devices such as MOSFETs and IGBTs. In this paper, we systematically review the mechanism of dead time control on switching loss, conduction loss and overall system performance, and discuss the optimisation strategies. The study aims to integrate the existing results, analyse the key technical challenges, and provide efficiency improvement solutions for motor drive and new energy applications. In this paper, we firstly define the concept of dead time and its important role in some circuit models in order to prevent short-circuiting, and then analyse its correlation characteristics with power loss and voltage distortion. The scope of the review covers traditional silicon-based devices and new wide-band semiconductors (SiC/GaN), comparing the efficiency, complexity, and so on, of deadband control under different models.

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