CONTROL SIGNAL GENERATION CIRCUIT, CHARGE PUMP DRIVE CIRCUIT, CLOCK DRIVER, AND DRIVE METHOD OF CHARGE PUMP
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United States of America Patent
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Issued Date -
May 9, 2013
app pub date -
Mar 28, 2012
filing date -
Mar 30, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A control signal generation circuit which generates a control signal for controlling a gate of an MOS transistor, comprises a first switching part connected to a current source and the gate and controlled based on an input signal; and a second switching part connected to the current source and the gate and controlled based on an input signal and control signal, wherein a voltage value of the control signal changes based on the input signal, and a slant of the voltage value with respect to time is switched to become smaller after the voltage value exceeds a threshold voltage of the MOS transistor compared with when the voltage value equals to or less than the threshold voltage of the MOS transistor.
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