Step-down unit incorporated in large scale integrated circuit

Details Step-down unit incorporated in large scale integrated circuit Step-down unit incorporated in large scale integrated circuit

1991-04-29

1992-06-09

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307264, 3072965, 307452, 307448, 3072963, 365226, 36518911, H03K 502, H03K 1708, H03K 1992, H03K 17284

Patent

active

051210070

ABSTRACT:
A step-down circuit is incorporated in a large scale integrated circuit for producing an internal power voltage from an external power voltage, and the step-down circuit comprises a reference signal generating unit for producing a reference signal indicative of a target level for the internal power voltage, first and second voltage regulating units for regulating the internal power voltage to the target level, and a monitoring unit monitoring the voltage level of the power voltage and producing an enable signal in the standby mode of operation when the external power voltage exceeds a predetermined level, wherein the first and second voltage regulating units are selectively enabled depending upon mode of the large scale integrated circuit, i.e. an active mode and a standby mode, as well as the level of the external power voltage so that power consumption of the large scale integrated circuit is improved.

REFERENCES:
patent: 4441035 (1984-04-01), Demetriou
patent: 4469959 (1984-09-01), Luke et al.
patent: 4482824 (1984-11-01), Tzeng
patent: 4716307 (1987-12-01), Aoyama
patent: 4716313 (1987-12-01), Hori et al.
patent: 4950921 (1990-08-01), Takada

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