Power supply circuit including first and second voltage regulators, corresponding device and method for controlling actuation of the voltage regulators in multiple operation modes

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United States of America Patent

PATENT NO 11906995
APP PUB NO 20220397924A1
SERIAL NO

17836417

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Abstract

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A voltage regulator coupled between a first node and second node includes a first (full-power) regulator circuit and a second (low-power) regulator circuit. In a first mode: the first regulator circuit is activated (with the second regulator circuit inactive) when the voltage at the first node is a battery voltage, and the voltage regulator is kept de-activated when the voltage at the first node is a ground voltage. In a second mode: the first regulator circuitry in is active (with the second regulator circuitry inactive) when the voltage at the first node is a battery voltage, and the voltage regulator is inactive when the voltage at the first node is a ground voltage. In a third mode: the second regulator circuitry is active (with the first regulator circuitry inactive) irrespective of the voltage at the first node being at the battery voltage or the ground voltage.

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Patent Owner(s)

Patent OwnerAddress
STMICROELECTRONICS S R LAGRATE BRIANZA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Butta', Pasquale Messina, IT 8 23
Clerici, Francesco Aci Castello, IT 4 5
Mangano, Daniele San Gregorio di Catania, IT 68 445

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