Protection voltage generating circuit with monotonic and stable power supply voltage behavior

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12216487
APP PUB NO 20240192715A1
SERIAL NO

18077402

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Abstract

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A circuit and method for generating a protection voltage includes a pair of voltage-generating circuits that generate voltages from the power supply voltage. The voltages have a differing dependence on the power supply voltage so that a difference between the first voltage and the second voltage changes sign for a particular value of the power supply voltage. The voltages are supplied to a protection voltage generating circuit that includes a pair of amplifiers having inputs that receive a respective one of the voltages and each of the amplifiers provides negative feedback to the other. An output circuit generates the protection voltage according to a maximum or a minimum value among the amplifier outputs, so that the protection voltage is monotonic with respect to variation of the power supply voltage.

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Patent Owner(s)

Patent OwnerAddress
CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LTD7B NIGHTINGALE WAY QUARTERMILE EDINBURGH EH3 9EG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abusleme, Hoffman Angel C Austin, US 1 0
Thomsen, Axel Austin, US 112 1536

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