Asymmetric ESD protection in bidirectional trench power MOSFETs for Li-ion battery applications
Conference: PCIM Asia Shanghai Conference 2025 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
09/24/2025 - 09/26/2025 at Shanghai, China
doi:10.30420/566583040
Proceedings: PCIM Asia Shanghai Conference 2025
Pages: 6Language: englishTyp: PDF
Authors:
Liu, Xueqing; Wang, Xiaobin; Pan, Ji; Lui, Sik; Bobde, Madhur
Abstract:
This paper investigates asymmetric electrostatic discharge (ESD) protection levels in bidirectional trench power MOSFETs used for lithium-ion (Li-ion) battery protection. Through mixed-mode simulations in Sentaurus TCAD, we analyze the transient processes during ESD events. The results indicate significant variations in ESD protection levels across different pins, highlighting potential MOSFET failures. We demonstrate that increasing trench depth and die size can enhance ESD protection, supported by experimental findings.