Power supply circuit for generating an internal power supply pot

Details Power supply circuit for generating an internal power supply pot Power supply circuit for generating an internal power supply pot

1995-01-25

1996-12-24

Sterrett, Jeffrey L.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323274, G05F 1613

Patent

active

055876480

ABSTRACT:
An internal power supply circuit of the present invention includes a primary internal power supply potential supplying circuit, two auxiliary internal power supply potential supplying circuits, and a P channel MOS transistor. The internal power supply potential supplying circuit always supplies an internal power supply potential to a first output node based on an external power supply potential. One auxiliary internal power supply potential supplying circuit is activated in response to a control signal, and, when activated, supplies the internal power supply potential to the first output node. The other auxiliary internal power supply potential supplying circuit is activated in response to another control signal, and, when activated, supplies the internal power supply potential to a second output node. The P channel MOS transistor is connected between the first output node and the second output node. The P channel MOS transistor has a gate electrode receiving the control signal.

REFERENCES:
patent: 4644251 (1987-02-01), Rathke
patent: 5455501 (1995-10-01), Massie
patent: 5479087 (1995-12-01), Wright
Koichiro Ishibashi, et al, "A Voltage Down Converter with Submicroampere Standby Current for Low-Power Static RAM's", IEEE Journal of Solid-State Circuits, vol. 27, No. 6, Jun. 1992, pp. 920-926.

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