Breaking News
Blog

Guest editorial: Low power is everywhere

NO RATINGS
Page 1 / 3 Next >
View Comments: Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
Paul A. Clayton
User Rank
CEO
re: Guest editorial: Low power is everywhere
Paul A. Clayton   4/19/2012 9:41:09 PM
NO RATINGS
A few other reasons that power use can be important: *form factor (lowering cooling requirements can facilitate a lighter, smaller, and/or less exposed system; this is a factor with servers where data center space costs money as well as consumer electronics and deeply embedded systems) *product cost (larger heat sinks add cost, fans add cost--material (including inventory) and assembly--, heat management adds design cost) *reliability (keeping temperatures down reduces soft errors and hard failures, in addition power saving techniques like DVFS can also increase MTTF by reducing electromigration et al.; removal of active cooling can remove a point of failure--particularly one with a moving part--, even reducing active cooling requirements can improve resilience; tighter integration facilitated by lower power can also reduce vulnerability to mechanical stresses and external electromagnetic interference) *performance (when performance is limited by TDP, energy-efficiency can increase performance; in addition, if the number of external connections (pins) for power and ground can be reduced, more pins can be available for signals increasing available signal bandwidth; lower power can also facilitate tighter integration which can improve latency and bandwidth) There is also a distinction between chemical batteries and other power sources. Energy harvesting techniques and radioisotope power cells have different constraints than chemical batteries. I realize that including all of the above in the introduction would have added too much length, but it is easy to forget how multifaceted power concerns are.

<<   <   Page 2 / 2
Flash Poll
Radio
LATEST ARCHIVED BROADCAST
Join our online Radio Show on Friday 11th July starting at 2:00pm Eastern, when EETimes editor of all things fun and interesting, Max Maxfield, and embedded systems expert, Jack Ganssle, will debate as to just what is, and is not, and embedded system.
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Top Comments of the Week