tag: NBTI

Extending Chip Lifetime With Safer Voltage Scaling
By Eyal Fayneh - 12 Nov, 2024 - Comments: 0

What if your chips lived 20% longer without compromising performance, and even while reducing power consumption? How would it affect your product’s reliability and cost? What would be the effect on your profitability? With the demand for longer-lasting chips growing across industries, designers and reliability engineers face increasing pressure to ensure their products perform correctly fo... » read more

Improving The Air-Stability and NBTI Reliability of BEOL CNFETs
By Technical Paper Link - 19 Sep, 2024 - Comments: 0

A new technical paper titled "Overcoming Ambient Drift and Negative-Bias Temperature Instability in Foundry Carbon Nanotube Transistors" was published by researchers at MIT, Stanford University, Carnegie Mellon University and Analog Devices. Abstract: "Back-end-of-line (BEOL) logic integration is emerging as a complementary scaling path to supplement front-end-of-line (FEOL) Silicon. Among ... » read more

Self-Heating Issues Spread
By Brian Bailey - 13 Mar, 2023 - Comments: 1

With every new node there are additional physical effects that must be considered, but not all of them are of the same level of criticality. One that is being mentioned more frequently is self-heating. All devices consume power and when they do that, it becomes heat. "In essence, all active devices generate heat as carriers move, creating channels for current to pass through the gates," says... » read more

Uneven Circuit Aging Becoming A Bigger Problem
By Ann Mutschler - 09 Mar, 2023 - Comments: 0

Circuit aging is emerging as a first-order design challenge as engineering teams look for new ways to improve reliability and ensure the functionality of chips throughout their expected lifetimes. The need for reliability is obvious in data centers and automobiles, where a chip failure could result in downtime or injury. It also is increasingly important in mobile and consumer electronics, w... » read more

3D-IC Reliability Degrades With Increasing Temperature
By Ann Mutschler - 14 Dec, 2022 - Comments: 0

The reliability of 3D-IC designs is dependent upon the ability of engineering teams to control heat, which can significantly degrade performance and accelerate circuit aging. While heat has been problematic in semiconductor design since at least 28nm, it is much more challenging to deal with inside a 3D package, where electromigration can spread to multiple chips on multiple levels. “Be... » read more

NBTI & PBTI of MOSFETs
By Technical Paper Link - 30 May, 2022 - Comments: 0

Technical paper titled "Bias Temperature Instability of MOSFETs: Physical Processes, Models, and Prediction" from researchers at Liverpool John Moores University. Abstract "CMOS technology dominates the semiconductor industry, and the reliability of MOSFETs is a key issue. To optimize chip design, trade-offs between reliability, speed, power consumption, and cost must be carried out. This r... » read more

What Causes Semiconductor Aging?
By Bryon Moyer - 08 Feb, 2022 - Comments: 7

Semiconductor technology has evolved to the point where no one can assume chips will last forever. If not carefully considered, aging can shorten the life of an IC below the needs for an intended application. Aging is well studied in technology circles, but while others less directly involved may understand at a general level this is a problem, it's not always obvious why. So what exactly ar... » read more

Reliability Concerns Shift Left Into Chip Design
By Ann Mutschler - 22 Dec, 2021 - Comments: 1

Demand for lower defect rates and higher yields is increasing, in part because chips are now being used for safety- and mission-critical applications, and in part because it's a way of offsetting rising design and manufacturing costs. What's changed is the new emphasis on solving these problems in the initial design. In the past, defectivity and yield were considered problems for the fab. Re... » read more

Aging Analysis Common Model Interface Gains Momentum
By Greg Curtis - 25 Mar, 2021 - Comments: 0

By Greg Curtis, Ahmed Ramadan, Ninad Pimparkar, and Jung-Suk Goo In February 2019, Siemens EDA wrote an article1 entitled “The Time Is Now for a Common Model Interface”. Since that time, we have continued to see increasing demand for aging analysis, not only in the traditional automotive space, but also in other areas of technology design, such as mobile communication and IoT application... » read more

Design For Reliability
By Brian Bailey - 15 Feb, 2021 - Comments: 1

Circuit aging is emerging as a mandatory design concern across a swath of end markets, particularly in markets where advanced-node chips are expected to last for more than a few years. Some chipmakers view this as a competitive opportunity, but others are unsure we fully understand how those devices will age. Aging is the latest in a long list of issues being pushed further left in the desig... » read more

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