@inproceedings{0e8c552ac62f42eb907962db6110ffe1,
title = "A 1.2 kV 400A SiC-MOSFET based 3L-TNPC power module with improved hybrid packaging method for high-density applications",
abstract = "Three-level T-type neutral-point-clamped converters (3L-TNPC) are widely used in motor drive and PV applications because of the higher efficiency, improved output THD, and lower common-mode noise. But such topology suffers from high stray inductance because of the complicated power loop structure. This paper proposes a SiC-MOSFET based 3L-TNPC power module with a hybrid packaging method. The module has a printed circuit board (PCB) directly soldered on top of direct bounding copper (DBC), with bare dies soldered on DBC and connecting to PCB by bonding wires. Such a structure allows the power loop on both DBC and PCB. This reduces stray inductance through enhanced mutual-inductance cancellation. The introduced PCB can provide extra flexibility in gate-loop optimization, enabling synchronous gate drive between parallel dies. The heat from dies can also be directly dissipated through DBC and the proposed direct-soldered coldplate. A 1.2 kV, 400 A SiC 3L-TNPC module is fabricated with measured loop inductance of 2.5 nH. Faster driving speed by using 0.33Ω gate resistance is enabled to reduce switching loss. Eventually, double-pulse tests and continuous tests are carried out to evaluate the module.",
keywords = "Hybrid packaging, PCB, Power density, Power module, SiC MOSFET, Stray inductance, Three-level",
author = "Zhao Yuan and Emon, \{Asif Imran\} and Si Huang and Zhongjing Wang and Yalin Wang and Mustafeez Hassan and Balaji Narayanasamy and Amol Deshpande and Fang Luo",
note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 36th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2021 ; Conference date: 14-06-2021 Through 17-06-2021",
year = "2021",
month = jun,
day = "14",
doi = "10.1109/APEC42165.2021.9487258",
language = "English",
series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "27--32",
booktitle = "2021 IEEE Applied Power Electronics Conference and Exposition, APEC 2021",
}