Title :
Taking a system approach to energy management
Author :
Monticelli, Dennis M.
Author_Institution :
Nat. Semicond. Corp., Santa Clara, CA, USA
Abstract :
The accumulation of popular features in portable products such as mobile handsets is driving battery life to unacceptably low levels. Substantial change does not come from incremental improvements in voltage regulator efficiency or battery chemistry, but rather from rethinking the paradigm of power consumption vs power delivery. This work proposes that power supply voltages be dynamically sized to the computation task of the moment and also fully adaptive to variations in process and temperature. Test results reported on an image processor reveal a 25% to 63% reduction in power at the 0.18 microns process node.
Keywords :
image processing equipment; mobile handsets; power consumption; power supply circuits; 0.18 microns; battery chemistry; battery life; computation task; energy management; image processor; mobile handsets; portable products; power consumption; power delivery; power supply voltages; voltage regulator efficiency; Batteries; Chemistry; Energy consumption; Energy management; Mobile handsets; Power supplies; Regulators; Temperature; Testing; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257062
