Apparatus for dual purpose charge pump
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United States of America Patent
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Jan 5, 2016
Grant Date -
Jun 25, 2015
app pub date -
Dec 20, 2013
filing date -
Dec 20, 2013
priority date (Note) -
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Abstract
Described is an apparatus which comprises: a first power supply node to provide a first power supply, a second power supply node, and a third power supply node; a first transistor which is operable to couple the first and second power supply nodes; and a charge pump circuit to provide a boosted voltage to the third power supply node in one mode, and to recover charge from the second power node in another mode. Described is a memory unit which comprises: a DRAM which is operable to be refreshed; a gated power supply node coupled to the DRAM to provide a gated power supply to the DRAM; and a charge recycling circuit to recover charge from the gated power supply node after the DRAM is refreshed.
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