Dynamic Compact Thermal Models Used for Electronic Design: A Review of Recent Progress

Author(s):  
Mohamed-Nabil Sabry

Both reliability and performance of electronic systems can be seriously affected by dynamic thermal and electro-thermal effects that take place at the device, chip, package, board and system levels. The marked trend towards miniaturization down to the nano-scale, increases problem complexity due to the large number of devices and multiplicity of physical effects involved. It accentuates also the importance of thermal effects. To deal with such complicated systems, design and analysis heavily rely on compact models. Recent advances have been made to extend the relatively more mature knowledge of static compact thermal models to the dynamic case. Although the theory of dynamic compact models is far from being complete, the wealth of methods proposed has deserved a review highlighting advances made and proposing new axis of research, which is the purpose of this paper.

Author(s):  
M. Rencz ◽  
V. Sze´kely ◽  
B. Courtois

This paper deals with the application of dynamic compact thermal models of packages. First an algorithm and a methodology is presented, that was developed for the inclusion of compact electrical RC thermal models of packages into field solvers, to enable fast board level simulation with compact models of packages. Application examples demonstrate the advantages of the method. In the second part of the paper a method is presented for the generation of nonlinear compact models. Simulation experiments comparing linear and nonlinear compact models show that for small temperature excursions the use of linear models is acceptable, but in case of larger than 80°C temperature increases the use of linear models results in an about 20–30% regular error for the usual package structures.


Author(s):  
Ana Laura Santos ◽  
Linda S.G.L. Wauben

This study focuses on the role of Systems Design in addressing the challenges of healthcare provision by international emergency relief organizations in developing countries. More specifically the challenges related to the safety and performance of medical equipment that is transferred in the aftermath of a humanitarian crisis. The aim of this paper is to describe the transfer of medical equipment and its associated challenges from a systems perspective and to reflect on the value of Systems Design as an approach to humanitarian innovation, addressing the identified systemic challenges. The concepts of Human Factors and Ergonomics, and Product-Service Systems will be presented as valuable contributions to support designers in handling a larger degree of complexity throughout the design process and to support them to make informed choices regarding this particular context.


2011 ◽  
Vol 2011 ◽  
pp. 1-8
Author(s):  
Agnes Nagy ◽  
Alicia Polanco ◽  
Manuel Alvarez

The rising complexity of electronic systems, the reduction of components size, and the increment of working frequencies demand every time more accurate and stable integrated circuits, which require more precise simulation programs during the design process. PSPICE, widely used to simulate the general behavior of integrated circuits, does not consider many of the physical effects that can be found in real devices. Compact models, HICUM and MEXTRAM, have been developed over recent decades, in order to eliminate this deficiency. This paper presents some of the physical aspects that have not been studied so far, such as the expression of base-emitter voltage, including the emitter emission coefficient effect (n), physical explanation and simulation procedure, as well as a new extraction method for the diffusion potentialVDE(T), based on the forward biased base-emitter capacitance, showing excellent agreement between experimental and theoretical results.


2011 ◽  
Vol 51 (8) ◽  
pp. 1351-1355 ◽  
Author(s):  
Marcin Janicki ◽  
Jedrzej Banaszczyk ◽  
Bjorn Vermeersch ◽  
Gilbert De Mey ◽  
Andrzej Napieralski

2021 ◽  
Author(s):  
Aakriti Tarun Sharma

The process of converting a behavioral specification of an application to its equivalent system architecture is referred to as High Level-Synthesis (HLS). A crucial stage in embedded systems design involves finding the trade off between resource utilization and performance. An exhaustive search would yield the required results, but would take a huge amount of time to arrive at the solution even for smaller designs. This would result in a high time complexity. We employ the use of Design Space Exploration (DSE) in order to reduce the complexity of the design space and to reach the desired results in less time. In reality, there are multiple constraints defined by the user that need to be satisfied simultaneously. Thus, the nature of the task at hand is referred to as Multi-Objective Optimization. In this thesis, the design process of DSP benchmarks was analyzed based on user defined constraints such as power and execution time. The analyzed outcome was compared with the existing approaches in DSE and an optimal design solution was derived in a shorter time period.


2017 ◽  
Vol 16 (7) ◽  
pp. 4585-4599 ◽  
Author(s):  
Caijun Zhong ◽  
Xin Jiang ◽  
Fengzhong Qu ◽  
Zhaoyang Zhang

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