Power efficiency depends on high power spectral density and collision avoidance.
Following Are Power Management Specifications, Designs, and Products:
System Management Bus (SMBus) Specifications: http://www.smbus.org/specs/index.html Texas Instruments Power Management Products: http://focus.ti.com/docs/analog/powermanagement.jhtml?familyId=64&templateId=2&path=templatedata/cm/overview/data/powermgmt Sipex Power Management Products: http://www.sipex.com/products/power_management.htm Sieko Power Management Products: http://www.seiko-usa-ecd.com/intcir/products/power/ ON Semiconductor Power Management Products: http://www.onsemi.com/taxonomy/0,3403,l0%253DProduct%2526l1%253DAnalog%2526l2%253DPower%252BManagement,00.html Intersil Power Mangement Products: http://www.intersil.com/design/powermanagement/ Philips Semiconductor Power Mangement Products: http://www.semiconductors.philips.com/catalog/219/282/41685/34095/34097/index.html#34097 MicroSemi Power Mangement Products: http://www.microsemi.com/idx.asp?MN=256 Analog Devices Power Mangement Products: http://products.analog.com/products_html/list_gen_category_tree.html
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