Switched-capacitor converters with low-voltage gate drivers
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United States of America Patent
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Dec 19, 2017
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app pub date -
Sep 22, 2016
filing date -
Mar 15, 2013
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Abstract
A power-conversion apparatus includes active-semiconductor switches configured to transition between first and second states that result in corresponding first and second electrical interconnections between capacitors and at least one of first and second terminals configured to be coupled to first and second external circuits at corresponding first and second voltages, a pre-charge circuit coupled to at least one of the capacitors, and gate-driver circuits, each of which includes a control input, power connections, and a drive output. Each switch is coupled to and controlled by a drive output of one of the gate-driver circuits. Power for the gate-driver circuits comes from charge stored on at least one of the capacitors via the power connection of that gate-driver circuit.
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