New Approaches To Low Power Design


While Moore's Law continues to drive feature size reduction and complexity, a whole separate part of the industry is growing up around vertical markets in the IoT. While these two worlds may be different in many respects, they share one thing in common—low power design is critical to success. How engineering teams minimize power in each of these markets, and even within the same market, ca... » read more

Micro-Architectural Exploration For Low Power Design


By Abhishek Ranjan, Saurabh Shrimal and Sanjiv Narayan In the first part of this series, we discussed the need to perform power optimizations and exploration at higher levels of abstractions, where the potential to reduce the power consumption was highest. While fine-grained local changes (like clock-gating, operand isolation, etc.) for power reduction are well understood and widely adopted,... » read more

Low Power Design Analysis


This paper presents a methodology for comprehensive power grid verification coverage, including identification of power grid weaknesses early in the design cycle. To read more, click here. » read more

Power Requires Holistic Perspective


With the move to smaller manufacturing nodes, power must be looked at from a holistic perspective. Instead of just optimizing a device or devising next generation power gating, power must be considered in the context of the whole system, Aveek Sarkar, vice president of product engineering and support at Ansys/Apache mentioned during a recent discussion about 5nm. In fact, he said, this c... » read more

Think IoT Designs Are Challenging? Try Embedded Systems In The Brain


There’s low power and then there’s low power. There are amazing applications and then there are amazing applications. Today the bleeding edge of low power design is not so much in IoT (although excellent work is being done in that space) but in medical, where the stakes are high and possible outcomes life-altering. Chet Moritz, associate professor with the University of Washington’s... » read more

A Survey Of Our Low Power Blogs In 2014


Over the past year, we have written a number of blogs on low power IC design. Here at the end of 2014 approaches, let’s look back at what we have discussed Our blogs covered methods to estimate and reduce power consumption in digital ICs. Our recommendation is that you do this early in the design cycle, such as the RTL coding stage, when you can have the most positive impact. In the first... » read more

Power Limits Apps In The IoT


The applications in the IoT are seemingly limitless, but the power is one thing that can’t be. Mary Ann White at Synopsys reminded me that a lot of the energy harvesting devices are super low power and there is a reason why they use just a simple LCD-type display. But we agree it would be so cool if we could have color LCDs that still only consume low power. Of course, I have no doubt tha... » read more

Design For Always-On


Designing for low power is such an interesting area because, while it might be frustrating, one size — or approach, in this case — does not fit all. It is a balancing act to weigh the design objectives against what is possible in the process. NXP, which launched a series of low power MCUs today aimed at the sensor-processing market, has been focusing on optimizing power consumption f... » read more

Low Power Design: RTL Power Analysis


In last month’s blog, we discussed and compared various power techniques. A quick recap of these power techniques is shown in figure 1. Selecting between them is often quite challenging. These techniques need to be selected during RTL design. At the RTL, designers need a power analysis solution that guides them to the right techniques for their design. In this month’s blog, we will review t... » read more

LP SoC Design: Part 2


In my last blog I talked about why designers need to rethink their methodology for low-power design and also introduced gross and fine-grain low power techniques. In this blog I am going to compare and contrast these techniques. Low-power design techniques fall under two categories, gross and fine-grain. Gross techniques are not dependent on the design or the process. Techniques such as powe... » read more

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