US 12,436,552 B2
Voltage regulator which redundantly monitors for an over-voltage condition based on a regulated voltage provided to a controller and methods
Loic Hureau, Toulouse (FR); Maxime Clairet, Labastidette (FR); Alaa Eldin Y El Sherif, Plano, TX (US); Jean-Philippe Meunier, Ayguesvives (FR); and Thomas Henry Luedeke, Oberbergkirchen (DE)
Assigned to NXP USA, Inc., Austin, TX (US)
Filed by NXP USA, Inc., Austin, TX (US)
Filed on Dec. 7, 2022, as Appl. No. 18/062,646.
Claims priority of application No. 21306736 (EP), filed on Dec. 10, 2021.
Prior Publication US 2023/0185322 A1, Jun. 15, 2023
Int. Cl. H02H 7/00 (2006.01); G05F 1/571 (2006.01); G06F 1/28 (2006.01); H02M 3/158 (2006.01)
CPC G05F 1/571 (2013.01) [G06F 1/28 (2013.01); H02M 3/158 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method to monitor for an over-voltage condition based on a regulated voltage, the method comprising:
receiving at a first terminal of a voltage regulator a first voltage which is based on a regulated voltage input to a controller;
receiving at a second terminal of the voltage regulator a second voltage indicative of the voltage input to the controller;
determining whether the first voltage exceeds a first voltage reference for a first time window;
resetting the controller based on the determination that the first voltage exceeds the first voltage reference;
determining whether the second voltage exceeds a second voltage reference for the second time window; and
powering down the voltage regulator based on the determination that the second voltage exceeds the second voltage reference; wherein resetting the controller based on the determination that the first voltage exceeds the first voltage reference further comprises powering down the voltage regulator.