Managing Voltage Drop At 10/7nm


Power integrity is becoming a bigger problem at 10/7nm because existing tools such as static analysis no longer are sufficient. Power integrity is a function of static and dynamic voltage drop in the power delivery network. And until recently, static analysis did an effective job in measuring the overall robustness of PDN connectivity. As such, it is a proxy for PDN strength. The problem is ... » read more

Power Impacting Cost Of Chips


The increase in complexity of the power delivery network (PDN) is starting to outpace increases in functional complexity, adding to the already escalating costs of modern chips. With no signs of slowdown, designers have to ensure that overdesign and margining do not eat up all of the profit margin. The semiconductor industry is used to problems becoming harder at smaller geometries, but unti... » read more

7nm Design Success Starts With Multi-Domain Multi-Physics Analysis


Companies can benefit from advancements in the latest semiconductor process technology by delivering smaller, faster and lower power products, especially for those servicing mobile, high performance computing and automotive ADAS applications. By using 7nm processes, design teams are able to add a lot more functionality onto a single chip and lower the power consumption by scaling operating volt... » read more

Why Do You Need Chip-Package-System Co-Design And Co-Analysis?


Whether it is the need for sustainable energy, or driving performance while keeping power at bay, or enabling safe and reliable operation of any electronic system, containment of electronic noise — power and signal noise is critical to all of the above. Other factors that impact safe and reliable operation are electromigration (EM), electromagnetic interference (EMI) and mechanical stress ena... » read more

Designing SoC Power Networks


Designing a power network for a complex SoC is becoming critical for the success of the product, but most chips are still using old techniques that are ill-suited to the latest fabrication technologies, resulting in an expensive, overdesigned product. Not only is the power network as designed too large, but this has several knock-on effects that impact area, timing and power. In the first pa... » read more

SoC Power Grid Challenges


The consumption of power and dissipation of heat within large SoCs has received a lot of attention recently, but that is only part of the issue. Power also has to be reliably delivered onto and around the system. This is becoming increasingly difficult, and new nodes are adding to the list of challenges. "If we were building chips where there was only a single Vdd and Vss then it is not that... » read more

The Interconnected Web Of Power


Tradeoffs between area and timing used to follow fairly simple rules. You could improve timing by adding area, and occasionally find an architectural solution that would decrease both at the same time. With physical synthesis the relationship became a little more complicated because an increase in area, say to make a drive larger or add another buffer, might upset the layout. That, in turn, cou... » read more

Partition Lines Growing Fuzzy


For as long as most semiconductor engineers can remember, chips with discrete functions started out on a printed circuit board, progressed into chip sets when it made sense and eventually were integrated onto the same die. The primary motivations behind this trend were performance and cost—shorter distance, fewer mask layers, less silicon. But this equation has been changing over the past ... » read more

Smart Early ASIC Design Prototyping And Analysis


The Power Delivery Network (PDN) is the backbone of ASIC design. It is used to supply clean power to active circuits in the IC. Voltage drop on the power rails can result in degraded performance, making delivery of noise free supply to all design elements including die, package and PCB, a challenging task. With increasing competition in the market, delivering chips on time with 'first silico... » read more

Power Delivery Network Verification Coverage


Power grid verification is a challenge, and there are no industry standards for design teams to follow that will verify the power grid for power and signal integrity issues. In other areas there is typically a verification plan with checks to perform, and when successfully completed, the design is then considered verified to proceed to tape-out. Having high coverage in the power grid’s power... » read more

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