DC-DC converter with current control
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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
status (Latency Note)
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Abstract
A direct current voltage converter in accordance with the invention includes a substantially static direct current voltage source, an inductor; a current-control switch coupled with, and between, the voltage source and the inductor, a step-up switch coupled with the inductor, and a current sense device coupled in series with the step-up switch and electrical ground. The converter also includes a capacitor for storing converted voltage that is coupled with, and between, electrical ground, and the inductor and the step-up switch through a device for controlling current flow direction. The converter further includes a first control circuit, which opens and closes the current-control switch based, at least in part, on an electrical current conducted through the current sense device, and a second control circuit, which opens and closes the step-up switch based, at least in part, on a voltage potential across the electrical load.
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