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Computer simulation of the reliability of wire bonds and ribbon bonds in power electronics modules

Computer simulation of the reliability of wire bonds and ribbon bonds in power electronics modules

Nwanoro, Kenneth Chimezie, Lu, Hua ORCID: 0000-0002-4392-6562, Yin, Chunyan ORCID: 0000-0003-0298-0420 and Bailey, Christopher ORCID: 0000-0002-9438-3879 (2017) Computer simulation of the reliability of wire bonds and ribbon bonds in power electronics modules. In: 2017 23rd International Workshop on Thermal Investigations of ICs and Systems (THERMINIC). IEEE, pp. 1-6. ISBN 978-1-5386-1929-2 ISSN 2474-1523 (Online) (doi:https://doi.org/10.1109/THERMINIC.2017.8233827)

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Abstract

Aluminium wires are widely used in power electronics modules to connect power semiconductor devices and other parts of the module electrically. Recently, other interconnect techniques have been proposed such as ribbon bond to improve the reliability, performance and reduce costs of power modules. The reliability of ribbon bond technique for an IGBT power module under power cycling is compared with that of conventional wire bond in this study using electro-thermal nonlinear Finite Element Analysis. The results showed that a single ribbon of 2000μm x 200μm will replace three wire bonds of 400μm in diameter to achieve a similar module temperature distribution under same power load. Using the equivalent plastic strain increment per cycle, it is seen that the ribbon bond is more reliable than the wire bonds. The impact of neglecting joule heat in the wire/ribbon bonds during power cycling simulation has also been investigated.

Item Type: Conference Proceedings
Title of Proceedings: 2017 23rd International Workshop on Thermal Investigations of ICs and Systems (THERMINIC)
Additional Information: Conference held at Amsterdam, Netherlands, 27-29 September 2017.
Uncontrolled Keywords: Power electronics, reliability, finite element analysis, wire/ribbon bond
Subjects: Q Science > QA Mathematics
Faculty / Department / Research Group: Faculty of Architecture, Computing & Humanities
Faculty of Architecture, Computing & Humanities > Centre for Numerical Modelling & Process Analysis (CNMPA)
Faculty of Architecture, Computing & Humanities > Centre for Numerical Modelling & Process Analysis (CNMPA) > Computational Mechanics & Reliability Group (CMRG)
Faculty of Architecture, Computing & Humanities > Department of Mathematical Sciences
Last Modified: 20 Mar 2019 11:54
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/21961

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