Internal voltage generator

Details Internal voltage generator Internal voltage generator

1997-06-30

1998-12-08

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327141, 327530, 327535, G05F 110

Patent

active

058475966

ABSTRACT:
An internal voltage generator for a semiconductor device. Whereas a feedback signal is given to maintain a voltage of a predetermined level by a voltage detector in the conventional art, the internal voltage generator adopts a method of adjusting the period. Therefore, the variance of a signal generated due to a time delay can be reduced. The internal voltage generator includes an oscillator for generating pulses of a predetermined period when a power-up signal is activated, a timing generator for generating appropriate timing according to the output of the oscillator for determining the basic operational period of a voltage pump and a series of signals, a pump driver for controlling a voltage pump to operate with a predetermined phase by controlling a pulse signal from the oscillator by the pulse signal of a predetermined period generated from the timing generator, and a voltage pump for pumping voltage to a third voltage and outputting the same.

REFERENCES:
patent: 5452253 (1995-09-01), Choi
patent: 5677649 (1997-10-01), Martin

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