Title :
An Ultra-Low-Power Power Management IC for Wireless Sensor Nodes
Author :
Seeman, Michael D. ; Sanders, Seth R. ; Rabaey, Jan M.
Author_Institution :
California Univ., Berkeley
Abstract :
A power interface IC is designed and demonstrated to convert and manage power for a wireless tire pressure sensor node. Power conversion is performed using on-chip switched-capacitor converters with size-optimized devices and level-shifting gate drivers. A synchronous rectifier efficiently harvests energy from an electromagnetic shaker and control circuitry regulates the output voltage while minimizing power consumption. The converters achieve efficiencies approaching 80%.
Keywords :
driver circuits; power integrated circuits; pressure sensors; rectifying circuits; switched capacitor networks; wireless sensor networks; electromagnetic shaker; level-shifting gate drivers; on-chip switched-capacitor converters; power consumption; power conversion; power interface IC; size-optimized devices; synchronous rectifier; ultralow-power power management IC; wireless sensor nodes; wireless tire pressure sensor node; Batteries; Circuits; Energy consumption; Energy management; Microcontrollers; Power conversion; Switching converters; Tires; Voltage; Wireless sensor networks;
Conference_Titel :
Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-1623-3
Electronic_ISBN :
978-1-4244-1623-3
DOI :
10.1109/CICC.2007.4405795
