Universiti Teknologi Malaysia Institutional Repository

Thermal model with metal consideration for System-On-Chip testing

Abu Hassan, Hasliza and Ooi, Chia Yee (2014) Thermal model with metal consideration for System-On-Chip testing. Journal of Low Power Electronics, 10 (3). pp. 325-333. ISSN 15461998

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Official URL: http://dx.doi.org/10.1166/jolpe.2014.1330


Increasing switching activities leads to high temperature during testing, which has adverse impact on circuit performance and reliability. Therefore, simulating thermal effects on System-on-Chip (SoC) when performing test scheduling is essential. However, most of the previous works on temperatureaware test scheduling were using thermal simulator that considers heat flow on silicon substrate only. Neglecting thermal effects caused by heat flow in metal interconnects may cause inaccuracy up to 30% as metal interconnect could remove a non-negligible amount of heat from the chip. This paper proposes an SoC thermal model that characterizes thermal effects due to metal interconnects under steady-state and transient stress conditions. The proposed thermal model is mainly based on RC network thermal model that is composed by thermal resistance and thermal capacitance of silicon substrate, heat spreader, heat sink as well as metal interconnects. Experiment has shown that our thermal model that does not consider metal interconnect effect is more accurate since it cause smaller temperature difference with the benchmark thermal simulation using ANSYS under assumption of 50% chip area being covered by a single layer of metal interconnect. The average temperature difference is just 1.904 °C compared to the temperature difference between the thermal model that considers metal effect and ANSYS thermal simulation.

Item Type:Article
Uncontrolled Keywords:thermal effects, thermal simulation
Subjects:T Technology
Divisions:Malaysia-Japan International Institute of Technology
ID Code:63055
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:14 Jun 2017 02:53
Last Modified:14 Jun 2017 02:53

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