Energy harvesting is a technology for powering wireless sensor nodes with low power consumption by enabling the battery free operation of devices. External battery powered sensor nodes require low power consumption. The output voltage of these sensors is small and varies with time. Hence, they require a power management circuit (PMC) to provide a constant voltage. The PMC required should respond efficiently to variations of input voltages and load. A switched capacitor Direct Current (DC)-DC converter is designed using a closed form PMC that selects the frequency and voltage. The algorithm adjusts the frequency and voltage gain of the converter. The switched capacitor DC-DC converter is designed with an input range from 0.5V to 2.5V and an output regulation window of 1V to1.4V with a PMC of less than 2mW. The output of 1.13V with a 1.116mW power consumption is obtained from simulations in Digital Schematic (DSCH) and Microwind software.
|Advisor:||Yeh, Hen-Geul (Henry)|
|Commitee:||Mozumdar, Mohammad, Yang, Hengzhao|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 56/04M(E), Masters Abstracts International|
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