POWER SUPPLY DEVICE
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United States of America Patent
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Issued Date -
Jun 19, 2014
app pub date -
Oct 18, 2013
filing date -
Dec 19, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A power supply device includes: a first transistor that switches a first current flowing between a first terminal and a second terminal of the first transistor; a second transistor that has a first terminal connected to the first terminal of the first transistor and a control terminal connected to a control terminal of the first transistor and is formed in a chip in which the first transistor is formed; a current source that supplies a second current between the first and second terminals of the second transistor; and a control part that performs a turn-on and turn-off control of the first transistor on the basis of voltages of the second terminals of the first and second transistors.
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