Internal power supply circuit for use in a semiconductor device

Details Internal power supply circuit for use in a semiconductor device Internal power supply circuit for use in a semiconductor device

1998-03-18

2000-08-29

Kim, Jung Ho

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327543, G05F 302

Patent

active

06111457&

ABSTRACT:
An internal power supply circuit for use in a semiconductor device includes a clamp circuit for clamping an internal voltage to a constant level. The clamped internal voltage is distributed to internal circuits of the semiconductor device through an output node. When the internal voltage rises momentarily due to noise in the internal power supply circuit due to open-circuit phenomenon, the rising internal voltage is discharged through the clamp circuit, thereby maintaining the internal voltage at a constant value. The clamp circuit includes a first transistor for discharging the output node, and a diode-connected transistor for generating a charge voltage at the gate of the first transistor. The threshold voltage of the diode-connected transistor is preferably equal to or lower than the threshold voltage of the first transistor.

REFERENCES:
patent: 5592121 (1997-01-01), Jung et al.
patent: 5821808 (1998-10-01), Fujima
patent: 5880624 (1999-03-01), Kayanagi et al.

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