Thermal Resistance Analysis of Power MOSFETs using Creo/ANSYS Software Versus Physical Measurements
Paper i proceeding, 2022

High requirement of power electronic converters in power density makes heat dissipation issue critical caused by the packaging of power electronic devices and modules. Compared with the wire bond process, the clip bond process shows excellent thermal performance, which is widely used in the packaging of power MOSFETs. However, due to the complicated structure of the copper bridge in the clip bond process, the thermal resistance cannot be easily evaluated according to mathematical models. A generic method is proposed to evaluate the thermal resistance of power MOSFETs, which is verified by a PDFN5×6 plastic-packaged power MOSFET. According to the physical structure of the selected MOSFET, the finite element model is established using combined Creo and ANSYS software. The thermal resistance from the PN junction to the case and the one from the junction to the PCB board can be accurately simulated from the developed model. The simulation results show very small errors compared with the physical measurements based on the JESD51 standard. The proposed method can replace the thermal resistance test to some extent, which can save time and cost in the early stage of the design and development of power electronic devices and modules.

thermal resistance

ANSYS

Creo

clip bond process

Heat dissipation

Författare

Boyang Xun

Xidian University

Wenchao Tian

Xidian University

Qian Xun

Chalmers, Elektroteknik, Elkraftteknik

Guoguang Zhang

Yixi Chen

Longji Pang

2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2022


9781665466189 (ISBN)

2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
Kiel, Germany,

Ämneskategorier

Energiteknik

Annan fysik

Annan elektroteknik och elektronik

Fundament

Grundläggande vetenskaper

DOI

10.1109/PEDG54999.2022.9923245

Mer information

Senast uppdaterat

2023-10-27