This paper provides CIMdata's perspective on Computational Fluid Dynamics (CFD) analysis; the motivations for its use, its value and future, and the importance for making CFD available to all engineers earlier in the product design/development lifecycle.
This white paper describes the use of CFD for LED lighting products. Thermal management is critical to LED performance and life so mechanical designers need to consider thermal issues from the earliest stages of the development process
The Mechanical Analysis Division of Mentor Graphics (formerly Flomerics) provides the world's most advanced computational fluid dynamics products. Our simulation software and consultancy services eliminate mistakes, reduce costs, and accelerate and optimize designs involving heat transfer and fluid flow before physical prototypes are built.
The focus of this paper is a combined electrical, thermal and optical characterization of power LED assemblies. Thermal management play important role in case of power LEDs, necessitating both physical measurements and simulation.
This white paper discusses the conditions that have created the need for pattern matching techniques, the identification and creation of patterns, the Calibre Pattern Matching process, and the benefits derived from its use.
What Is CFA and Why Do I Need It? This five-part paper series examines the conditions that led to the development of recommended rules, and describes the process by which automated design analysis and rule verification can help designers optimize designs to the fullest and most efficient use of area, while still ensuring manufacturability.
A powerful signal integrity analysis tool must be flexibility, easy to use and integrated into an existing EDA framework and design flow. In addition, it is important for the tool to be accurate enough. This report reviews a validation study for the Mentor Graphics HyperLynx 8.0 PI tool to establish confidence in using it for power integrity analysis.
For advanced signaling over high-loss channels, designs today are using equalization and several new measurement methods to evaluate the performance of the link. Both simulation and measurement tools support equalization and the new measurement methods, but correlation of results throughout the design flow is unclear. In this paper a high performance equalizing serial data link is measured and the performance is compared to that predicted by simulation. Then, the differences between simulation and measurements are discussed as well as methods to correlate the two.
High Density Interconnect (HDI) is being used more often to meet the growing need for more complex designs in smaller form factors. Beyond some of the more obvious electrical effects of using smaller vias, there is also an impact to the power integrity of a board using HDI. This includes different effects of mounted inductances of decoupling capacitors, changes in plane performance due to reduction in perforation from chip pinouts, and the inherent plane-capacitance changes from using dielectrics of various thicknesses. This paper will examine and quantify these effects, using numerous design examples, including a large conventional through-hole design board that was reduced using HDI.
The success of any consumer electronic device depends to a large extent on the appeal of the user interface (UI) and how easy the device is to use. Studies show that good cosmetic design can encourage users to explore the full range of features and often engenders the perception that a product is easier to use. So if the benefits of a great looking, easy-to-use UI are so clear, why are so many products still falling short of customer expectations? The solution lies in taking a fresh new approach a consumer electronic device UI plays. By identifying common UI functionality and implementing it in a reusable and customizable way, we can make it far easier for embedded engineers to deliver visually engaging and easy-to-use consumer electronic products.
Moving to C++ presents opportunities for higher programmer productivity. The requirements of embedded systems, however, demand that the adoption of C++ be carefully measured for the performance impact of run-time costs present in C++, but not in C. This talk suggests strategies for developers who are starting their acquaintance with C++.
No question the UI in electronic devices today is playing a larger role in the success of a device. Get the UI wrong and your product will have little chance of surviving. And it isn’t enough to deliver a UI that is merely functional: it has to look good too. Studies have shown that a good cosmetic design can encourage users to explore the full range of features and often, can engender the perception that a product is easier to use, which can make consumers more tolerant of product deficiencies. Learn more today!
In today’s competitive embedded markets, manufacturers need to find ways to differentiate without adversely impacting development time and cost. This is particularly true in relation to embedded devices that are designed for use by consumers. As such products become more sophisticated, user interaction via traditional switches, dials, and basic displays becomes less desirable for a number of reasons.
Interest in DO-254 first occurred in Europe and has since spread to the US commercial aircraft industry. If you are being asked about your company's DO-254 direction and compliance, but have been overwhelmed with information on the subject, then this article is for you.
"As the number of enhancements to various Hardware Description Languages (HDLs) has increased over the past year, so too has the complexity of determining which language is best for a particular design. Many designers and organizations are contemplating whether they should switch from one HDL to another.
This paper compares the technical characteristics of three, general-purpose HDLs.
This paper investigates the effects of DDR4ís Pseudo Open Drain (POD) driver on data bus signaling and describes methodologies for dynamically calculating the DRAMís internal VrefDQ level required for data eye analysis.
Over the years, two major approaches to SERDES simulation have emerged and gained popularity: time-domain (or bit-by-bit) and statistical. Both are used to build the eye diagram and bit-error ratio (BER), and each has its benefits and limitations.
This paper, nominated for the DesignCon 2016 Best Paper Award, analyzes the computational procedure specified for Channel Operation Margin (COM) and compares it to traditional statistical eye/BER analysis.