National Semiconductor : Saving Energy via Smart Power Management
Power management techniques and methodologies are expanding rapidly. Political, environmental, and consumer-driven pressures are pushing the market toward increasing functionality while decreasing power consumption. Portable applications, in particular, are presently seeing a great deal of expansion. It is a growing market segment that is being fueled by the increase of wireless devices and their expanding feature sets. Cellular telephones, PDAs, MP3 players, digital cameras, and portable gaming platforms are getting smaller, faster, and more capable. In order to maintain acceptable levels of “talk-time” (battery life), a great deal of effort is being put into the design of the power-supply subsystems.