Title :
The design of an ultra-low power buck regulator supporting dynamic voltage scaling for wireless sensor networks
Author :
Schemm, Nathan ; Balkir, Sina ; Hoffman, Michael W.
Author_Institution :
Dept. of Electr. Eng., Univ. of Nebraska-Lincoln, Lincoln, NE, USA
Abstract :
The design of an ultra-low power buck regulator is proposed. The regulator is designed to be integrated with a single-chip wireless sensor network and provide high efficiency at low output currents to maximize the sensor´s battery life. The maximum output current is 50 mA. Dynamic voltage scaling is also supported to further reduce total power dissipation. The no-load current of the complete regulator is less than 1 muA. Simulation results give an expected efficiency of over 80% at 20 muW of output power and a peak efficiency of over 95%.
Keywords :
voltage regulators; wireless sensor networks; current 50 mA; dynamic voltage scaling; power 20 muW; ultralow power buck regulator; wireless sensor networks; Capacitors; Dynamic voltage scaling; Energy consumption; Microcontrollers; Power generation; Power supplies; Pulse width modulation; Regulators; Voltage control; Wireless sensor networks;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5117884
