Active pull-up voltage spike reducer

Details Active pull-up voltage spike reducer Active pull-up voltage spike reducer

1995-04-06

1996-06-11

Nelms, David C.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327537, 327538, 327541, 327108, 327333, G02F 110, H03K 300, H03L 500

Patent

active

055259260

ABSTRACT:
An embodiment of the present invention provides a method to reduce a regulated power source voltage spike during operation of a dynamic random access memory by the steps of: providing a voltage spike reducer enabling pulse via a pulse generator circuit responsive to a pulse generator input signal; translating the voltage level of an unregulated power source via a level translation stage during the presence of the voltage spike reducer enabling pulse; amplifying a translated voltage level; and providing a measure of current from the unregulated power supply to the regulated power supply via a current driver stage that is responsive to the amplified translated voltage level translation. The method is realize by in a CMOS active pull-up voltage spike reducing circuit for a semiconductor device comprising: first, second and third potentials for powering the active pull-up voltage spike reducing circuitry; a pulse generator stage responsive to a pulse generator input signal; a level translator stage responsive to an output pulse of the pulse generator circuit; a translated driver stage responsive to an output of the level translator stage; and a current driver stage responsive to said translated driver stage to thereby provide additional current to the third potential.

REFERENCES:
patent: 4663701 (1987-05-01), Stotts
patent: 5136190 (1992-08-01), Chern et al.

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