Multi-level voltage generator
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United States of America Patent
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Sep 15, 2009
Grant Date -
Dec 11, 2008
app pub date -
Dec 27, 2004
filing date -
Aug 4, 2004
priority date (Note) -
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Abstract
A multilevel voltage generator includes a first positive voltage generator generating a first output voltage using a first capacitor which receives a reference voltage and is charged to a voltage level corresponding to two times of the reference voltage, a second positive voltage generator generating a second output voltage and a third output voltage using a second capacitor and a third capacitor which receive the first output voltage and are charged to voltage levels corresponding to predetermined multiples of the reference voltage, and a negative voltage generator generating a fourth output voltage having predetermined negative voltage levels using a fourth capacitor which receives the reference voltage, the second output voltage, or the third output voltage and is charged to a voltage level corresponding to a negative voltage of the second or third output voltage.
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