Merged charge pump

A charge pump circuit for generating various pumped voltages includes a first charge pump including a plurality of first charge pump stages responsive to a first set of clock signals and having threshold voltage cancellation circuitry, a second charge pump including a plurality of second charge pump...

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Bibliographic Details
Main Author LIU PINGN
Format Patent
LanguageEnglish
Published 27.12.2005
Edition7
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONTROLLING
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:A charge pump circuit for generating various pumped voltages includes a first charge pump including a plurality of first charge pump stages responsive to a first set of clock signals and having threshold voltage cancellation circuitry, a second charge pump including a plurality of second charge pump stages responsive to a second set of clock signals different from the first clock signals, and a switching circuit configured to selectively connect the second charge pump in series between the first charge pump and a voltage rail in response to a mode signal (MODE). For some embodiments, a plurality of the charge pump circuits can be selectively connected in parallel in response to corresponding select signals to generate various drive currents.
Bibliography:Application Number: US20030729658