Issues with Low-Input-Voltage Boost Converter Design

Jonathan W. Kimball, Missouri University of Science and Technology
Theresa L. Flowers
Patrick L. Chapman

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This paper addresses boost converter circuits that are built for very low input voltages, i.e. less than 1 V. Such circuits can be useful for single-cell solar and fuel cell power supplies. Important issues are physical size, high conversion ratio, efficiency, and startup. Several experimental studies show the impact of these issues. A startup technique is proposed that works for arbitrarily low input voltages.