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Digital Power
Freescale deals with excessive energy consumption with Next-Generation Digital Signal Controllers
Freescale recently announced the first family in its next-generation DSC portfolio, the MC56F84xx, which integrates high-speed analog functionality with an efficient 32-bit digital signal processor core to provide precise and accurate digital control for power supplies (digital power conversion) and motors. The MC56F84xx family's performance, precision, accuracy and control capabilities help increase system stability for these types of applications.
Increased system stability for motor control applications results in motors that run more efficiently and quietly (in a dishwasher or other appliance, for example). The benefits of increased system stability for power supplies include reduced energy waste and heat. When less heat is generated, designers can reduce costs and system size. For example, a server room with power supplies that generate less heat requires less energy for cooling, and circuit board designs that have less heat to dissipate can be smaller (improved power density), reducing system size and cost and allowing "miniaturization" of the application.
The MC56F84xx family is targeted at high-end digital power supplies, such as those used for servers in data centers. Improving the energy efficiency of data centers will become increasingly critical as businesses and consumers continue the migration to Cloud computing. As Cloud use increases during the next few years, the average size of the data centers that host the Cloud infrastructure also will grow dramatically, in turn increasing energy consumption. With the price of electricity increasing and the typical electricity cost for a server rack equaling nearly 20 percent of its overall cost of ownership, data center owners will continue to look for more energy-efficient solutions to help reduce their total costs.
The MC56F84xx family is ideal for helping reduce energy waste in traditional industrial applications and lighting systems, as well as the next generation of energy generators, such as solar power.
Highlight:
The MC56F84xx family is targeted at high-end digital power supplies, such as those used for servers in data centers. Improving the energy efficiency of data centers will become increasingly critical as businesses and consumers continue the migration to Cloud computing. As Cloud use increases during the next few years, the average size of the data centers that host the Cloud infrastructure also will grow dramatically, in turn increasing energy consumption. With the price of electricity increasing and the typical electricity cost for a server rack equaling nearly 20 percent of its overall cost of ownership, data center owners will continue to look for more energy-efficient solutions to help reduce their total costs.
About the Author
content
How much power does a digital wristwatch use?
I want an actual number in milliwatts or microwatts. A voltage and current usage would be good, too.
Please link to a spec sheet of an actual product. "I think it's probably very small" is not helpful.
They were a few microwatts in the past.
Nowadays they are in the femtowatt range, would not be surprised if in the attowatt range.
Hope this properly answers your question
Marvell Technology Group: Digital Power Factor Corrections