Fish & Richardson P.C.
Two-phase clock charge pump with power regulation
 A method and apparatus for providing a charge pump that is particularly useful for generating high voltages and high currents for erasing and programming flash electrically-erasable programmable read only memory arrays (Flash EEPROMs). The invention includes an efficient method and circuit for generating a pumped voltage with no voltage drop from one stage to the next by using a simple two-phase clocking scheme and an auxiliary pump to gate a larger primary pump. One feature allows adjustment of the level of voltage pumping to accommodate higher voltage power supplies. 
Eon Silicon Devices, Inc.
H G
H02M G11C
inventional additional
Chung K.
Chang