Start-up circuit for voltage reference generator

Details Start-up circuit for voltage reference generator Start-up circuit for voltage reference generator

1999-01-05

2000-12-12

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

323284, 323901, G05F 316

Patent

active

061603929

ABSTRACT:
A start-up circuit for a reference voltage generator which restarts a reference voltage generating circuit when a reference voltage drops below a predetermined level due to noises or change of a power supply voltage. The start-up circuit according to the present invention includes a reference voltage generating unit operated by an input signal and generating a reference voltage in accordance with a power supply voltage, a reference voltage sensing unit determining whether an output signal from the reference voltage generating unit is lower than a predetermined voltage level, and a start-up circuit unit determining an initial operation of the reference voltage generating unit in accordance with a reset signal and supplying the input signal to restart the reference voltage generating unit in accordance with an output signal from the reference voltage sensing unit.

REFERENCES:
patent: 4311954 (1982-01-01), Capel
patent: 5034626 (1991-07-01), Pirez et al.
patent: 5367249 (1994-11-01), Honnigford
patent: 5686825 (1997-11-01), Suh et al.
patent: 5883501 (1999-03-01), Arakawa

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