Michael Lorek
Department of Electrical Engineering and Computer Sciences, UC Berkeley
BSAC Graduate Student Researcher
December 4, 2012 | 12:00 to 12:30 | 540 Cory Hall, DOP Center Conference Room
Host: Kris Pister
This project explores the design of a fully integrated, switched-capacitor DC-DC converter to voltage boost small amounts of energy from photovoltaic or other low voltage energy sources. Clever bootstrapping techniques are used to ensure circuit startup without high-voltage or mechanical assists. Nanopower oscillator topologies are being investigated for minimum power and input voltage operation. Advanced timing schemes are used to minimize charge reversion loss and clock driver short circuit currents for increased efficiency. A boosted output voltage around 1.5V is targeted for compatibility with older CMOS technologies, offering a power advantage in heavily duty cycled applications where leakage is dominant. Future goals include the integration of energy source and processing circuitry on the same substrate for true single-chip, autonomous computing platforms.
bsac.berkeley.edu/directory/zoom.php?PersonID=1270250508
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