Title :
Power management system for ultra-low power energy harvesting applications
Author :
Salomaa, Jarno ; Pulkkinen, Mika ; Haapala, Tuomas ; Nurmi, Marko ; Halonen, Kari
Author_Institution :
Dept. of Micro & Nanosci., Aalto Univ., Espoo, Finland
Abstract :
This paper presents a two-regulator power management system for ultra-low power energy harvesting applications. The system consists of an RF-to-DC converter, an LDO and an SC regulator that are connected in parallel operating alternately, and a voltage detector for choosing the operation mode. The system produces a stable 1.2-V output power supply, using a wide range of input DC voltages (0.7...2 V) or input AC powers down to -14 dBm. The system is implemented in a 0.18 μm CMOS process and it has been characterized with load currents from zero to 100 μA.
Keywords :
CMOS integrated circuits; energy harvesting; energy management systems; low-power electronics; power convertors; CMOS process; LDO; RF-DC power convertor; SC regulator; current 100 muA; size 0.18 mum; two regulator power management system; ultra-low power energy harvesting applications; voltage 1.2 V; voltage detector; Capacitors; Detectors; Regulators; Switches; Thyristors; Voltage control; Voltage measurement;
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7168826
