Synchronous switched boost and buck converter
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United States of America Patent
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Issued Date -
May 15, 2003
app pub date -
Nov 5, 2002
filing date -
Nov 5, 2001
priority date (Note) -
Abandoned
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Abstract
A direct current voltage boost converter includes a substantially static direct current voltage source coupled with an inductor. The converter also includes a step-up switch coupled with the inductor, and a capacitor coupled with, and between, electrical ground, and the inductor and the step-up switch via a switching device for controlling current flow direction. The converter further includes a single control circuit coupled with the step-up switch, the switching device and an output terminal of the boost converter, wherein the control circuit opens and closes the step-up switch and the switching device substantially out of phase with each other. This out of phase switching effects voltage conversion and regulation based, at least in part, on a desired output voltage and an output voltage present on the output terminal of the boost converter.
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