A methodology and design tools to support system-level VLSI design

1995 ◽  
Vol 3 (3) ◽  
pp. 355-369 ◽  
Author(s):  
K. Kucukcakar ◽  
A.C. Parker
Keyword(s):  
Support System ◽  
Vlsi Design ◽  
System Level ◽  
Design Tools

Silicon Based System-in-Package : Breakthroughs in Miniaturization and ‘Nano’-integration Supported by Very High Quality Passives and System Level Design Tools

2006 ◽  
Vol 969 ◽  
Author(s):  
Franck Murray ◽  
François LeCornec ◽  
Serge Bardy ◽  
Catherine Bunel ◽  
Jan Verhoeven ◽  
...  
Keyword(s):  
New Technologies ◽  
Test System ◽  
System Level ◽  
Design Tools ◽  
Design Environment ◽  
High Quality ◽  
Silicon Chips ◽  
The Creation ◽  
Silicon Based ◽  
Very High

AbstractThe very large development of home and domestic electronic appliances as well as portable device has led the microelectronics industry to evolve in two complimentary directions : “More Moore” with the continuous race towards extremely small dimensions hence the development of SoCs (System on Chip) and more recently a new direction that we could name “More than Moore” with the integration of devices that were laying outside the chips and here the creation of SiPs (System in Package).These two approaches are not in competition one with the other: the paper will show some examples of integrated nano systems that use several SoCs.The technology we have developed is called Silicon Based System in Package. The first products using this technology are now in volume production and used mainly in the field of wireless communications.This new technology relies on four pillars. Passive integration is the first. Very efficient and high quality factor capacitors and inductors have been integrated, allowing the creation of complete modules including active devices, filters and decoupling capacitors. High-density MOS capacitors with 1-1000 nF capacitance, and as high values as 25-250+ nF/mm2 specific capacitance have been fabricated in macroporous Si-wafers, containing over 1 billion macropores. Typically an ESR less than 100 mÙ and an ESL less than 25 pH were found for capacitors over 10 nF. This novel concept is an important step forward in improving the stability of power-amplifier modules by replacing conventional SMD technology.Whereas generations with capacitors density of up to 100 nF/mm2 will be using “conventional” materials and structures, the next steps in the roadmap will call for new 3D structures and materials such as high-k dielectrics.The second element is advanced packaging. New technologies, such as the assembly of Silicon chips onto other Silicon chips, also named “double flip chip” have been developed. This has been made possible thanks to the combination of the most advanced microbumping and die placement techniques. In addition to a tremendous reduction of size (up to a factor of 10 to 20) these techniques have also brought a better repeatability of system performance.The third element has been the development of design tools that allow a seamless system design for engineers used to IC design tools and flows. Our Design Environment allows co design of multiple technologies chips and their integration in a single system. This IC-like Design Environment has contributed a lot to the adoption of the technology.Testing is the fourth element and is one of the economical enablers of the technology. The key words are: “known good die”, RF test, system test? Some innovative RF probing and full on wafer subsystem test will be shown. Even though efficient test is not vital for the technical feasibility of this system integration, it becomes very quickly one of the most important enablers, especially when we deal with very high volumes of production. The conclusion of the paper will be an open door to the future. Some innovations like the integration of light or even energy storage inside our SiPs will be presented.

Custom MOS VLSI design: tools and methods

1989 ◽  
Vol 36 (1) ◽  
pp. 484-492 ◽  
Author(s):  
S.A. Kleinfelder
Keyword(s):  
Vlsi Design ◽  
Design Tools ◽  
Tools And Methods

scholarly journals Complexity Evaluation of an Environmental Control and Life-Support System Based on Directed and Undirected Structural Entropy Methods

Entropy ◽  
2021 ◽  
Vol 23 (9) ◽  
pp. 1173
Author(s):  
Kaichun Yang ◽  
Chunxin Yang ◽  
Han Yang ◽  
Chenglong Zhou
Keyword(s):  
Support System ◽  
Level Scheme ◽  
Life Support ◽  
Environmental Control ◽  
Complex Structure ◽  
Reducing Power ◽  
System Structure ◽  
System Level ◽  
Life Support System ◽  
Structural Entropy

During manned space missions, an environmental control and life-support system (ECLSS) is employed to meet the life-supporting requirements of astronauts. The ECLSS is a type of hierarchical system, with subsystem—component—single machines, forming a complex structure. Therefore, system-level conceptual designing and performance evaluation of the ECLSS must be conducted. This study reports the top-level scheme of ECLSS, including the subsystems of atmosphere revitalization, water management, and waste management. We propose two schemes based on the design criteria of improving closure and reducing power consumption. In this study, we use the structural entropy method (SEM) to calculate the system order degree to quantitatively evaluate the ECLSS complexity at the top level. The complexity of the system evaluated by directed SEM and undirected SEM presents different rules. The results show that the change in the system structure caused by the replacement of some single technologies will not have great impact on the overall system complexity. The top-level scheme design and complexity evaluation presented in this study may provide technical support for the development of ECLSS in future manned spaceflights.

Sign in / Sign up

Export Citation Format

Share Document