Internal power supply circuit with low power consumption

Details Internal power supply circuit with low power consumption Internal power supply circuit with low power consumption

1997-11-17

1999-04-06

Cunningham, Terry D.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327538, 327541, 323315, G05F 302

Patent

active

058923900

ABSTRACT:
An internal power supply circuit includes a first output MOS transistor for transmitting a first reference voltage in a source follower mode, an internal reference voltage generating circuit for generating a second reference voltage from the output voltage of the first MOS transistor, and an output MOS transistor coupled between a power supply node and an output node and operating in the source follower mode in accordance with the second internal reference voltage. Internal reference voltage generating circuit has a function of canceling an influence of the threshold voltages of output MOS transistor and the first MOS transistor on the internal voltage VINT on the output node. Since comparing circuit for comparing the internal voltage and the reference voltage is not used, current consumption necessary for the comparing operation can be reduced.

REFERENCES:
patent: Re34290 (1993-06-01), Tobita
patent: 3806742 (1974-04-01), Powell
patent: 4812735 (1989-03-01), Sawada et al.
patent: 5117177 (1992-05-01), Eaton, Jr.
patent: 5362988 (1994-11-01), Hellums
patent: 5534817 (1996-07-01), Suzuki et al.
patent: 5610550 (1997-03-01), Furutani
Microelectronics Second Edition, pp. 155-160, 1988 by Jacob Millman and Arvin Grabel, published by McGraw-Hill International Editions, ISBN 0-07-100596-X.

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