Voltage down converter
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United States of America Patent
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-
Oct 19, 2004
Grant Date -
May 27, 2004
app pub date -
Nov 22, 2002
filing date -
Nov 22, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A voltage down converter 10 for providing a supply voltage and current to a device, such as a semiconductor device. The voltage down converter includes a first circuit 12 that supplies steady state or 'DC' current to the device, and a second circuit 14 that supplies the fluctuating or 'AC' current to the device. The first circuit 12 includes a first comparator 18 that drives a first transistor P1 to supply most of the steady state current. The second circuit 14 includes a second comparator 20, which is larger than the first comparator 18, and which drives a second transistor P2, which is smaller than the first transistor P1, to supply the fluctuating current to the device. The converter 10 further includes a feedback circuit 16 for controlling the supply voltage.
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