Charge pump with a power-controlled clock buffer to reduce power consumption and output voltage ripple
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United States of America Patent
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Oct 14, 2014
Grant Date -
Sep 4, 2014
app pub date -
Apr 22, 2014
filing date -
Feb 11, 2013
priority date (Note) -
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Abstract
A charge pump system includes a charge pump that receives its clock signals, generated by an oscillator circuit, though a clock buffer. The clock buffer is power-controlled to reduce power consumption and output voltage ripple. The buffer is formed of a series of inverter that are connected to the power supply level through a clamping element, such as a transistor whose gate is controlled by a regulation signal based on feedback from the pump's output.
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