category: Top Stories

category: Auto, Security & Edge AI

Thinking Differently About Power
By Ed Sperling - 12 Jan, 2012 - Comments: 0

By Ed Sperling Battery life and lower electricity bills are now marketing tools for makers of SoCs, the mobile devices they go into, and servers that power data centers. A smart phone battery that lasts through the day without a charge, even when the user is playing high-action games, is a lot more attractive than one lasting only a few hours. And a data center electricity bill that shows a sh... » read more

Energy Vs. Power: Energy, Power Optimization Is A System-Level Challenge
By Ed Sperling - 01 Dec, 2011 - Comments: 0

By Ann Steffora Mutschler Power issues today, whether they are related to low power in a smart phone or highly efficient power for data center applications, are so pervasive that they touch the entire design team—and must be carefully prioritized at the system or architectural level. As discussed in Part 1 of this series, energy and power are different entities and must be understood dist... » read more

Why Batteries Don’t Last Long Enough
By Ed Sperling - 01 Dec, 2011 - Comments: 0

By Pallab Chatterjee While there have been great strides in process scaling for power reduction on a per-gate level for mobile devices, a large part of the power is still consumed by the power amplifier, filter and analog mux arrangement from the systems. Most of the logic systems have benefited from scaling to the sub-40nm technology range, which reduces standby and operating power by seve... » read more

Cell Phone Radiation: Taboo Topic, Interesting Science
By Ann Mutschler - 01 Dec, 2011 - Comments: 0

Amid a growing consumer concern for possible health issues associated with radiation, more attention is being paid to what’s being generated by mobile devices—particularly the ones we hold next to our brains. Legislation has been introduced in some parts of the country, with varying success, aimed mainly at informing consumers about the potential risks and giving suggestions for reducing ex... » read more

AMS Challenges Growing
By Ed Sperling - 01 Dec, 2011 - Comments: 0

By David Lammers Analog and mixed signal (MS) devices will play an ever-increasing role in saving energy, particularly as the “Internet of Things” expands to about 10 billion units per year over the next decade. But as leading-edge design rules scale to 28nm and below, enhanced with high-k/metal gate technologies, it is becoming increasingly challenging to integrate AMS devices on SoCs. ... » read more

3D DRAM Makers Inch Closer To Production
By Ed Sperling - 01 Dec, 2011 - Comments: 0

By Mark LaPedus For some time, DRAM makers have been developing 3D memory chips, but commercial products still are not due out for some time because of technical and cost issues. But the advent of the 3D DRAM era could be near the turning point, as two memory rivals have separately moved to bring their respective technologies closer to production. In one move, Micron Technology Inc. has di... » read more

Playing The Voltage Game
By Ed Sperling - 01 Dec, 2011 - Comments: 0

y Ed Sperling Scaling down the voltage to boost battery life and cut energy costs has always been considered the best option, but it’s getting more difficult at advanced nodes and in stacked die packages. The key problems are noise and leakage. Lowering the voltage exacerbates both of them, forcing a rethinking of the whole design process starting at the architectural level and continuing... » read more

Five Important Changes That Will Affect Power
By Ed Sperling - 03 Nov, 2011 - Comments: 0

By Ed Sperling So far most of the energy savings in SoCs have been achieved using two main approaches—turning off most of the chip most of the time, and changing the materials used to insulate against current leakage. Over the next few years, changes to designs will be more radical, encompass more pieces of a bigger system, and they will be orders of magnitude more effective. From a marke... » read more

EMI Cuts A Wide Swath
By Ed Sperling - 03 Nov, 2011 - Comments: 0

By Ann Steffora Mutschler Electromagnetic interference (EMI) cuts across all application segments, whether it’s aerospace and defense and its various tangents, or in a handset, virtually touching a large majority of engineering teams today. The reason this issue affects so many engineering groups is because as modulation schemes become ever more complex they become even more sensitive to ... » read more

Energy Vs. Power
By Ed Sperling - 03 Nov, 2011 - Comments: 0

By Ann Steffora Mutschler In the quest to optimize an SoC for both power and energy efficiency many variables come into play. Target application, use cases, processor choice and amount of memory among other specifications all figure into the optimization equation. As discussed in Part 1 of this series, energy and power are different entities and must be understood distinctly from each other... » read more

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