US 12,228,594 B2
Glitch free brown out detector
Jayant Ashokkumar, Colorado Springs, CO (US); and Gregory W. Pauls, San Jose, CA (US)
Assigned to Infineon Technologies LLC, San Jose, CA (US)
Filed by Infineon Technologies LLC, San Jose, CA (US)
Filed on Mar. 11, 2022, as Appl. No. 17/654,482.
Claims priority of provisional application 63/286,851, filed on Dec. 7, 2021.
Prior Publication US 2023/0176095 A1, Jun. 8, 2023
Int. Cl. G01R 1/00 (2006.01); G01R 19/165 (2006.01); H03K 19/00 (2006.01)
CPC G01R 19/16566 (2013.01) [H03K 19/0021 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A circuit comprising:
a plurality of comparators disposed on an integrated circuit, the plurality of comparators having inputs coupled to a monitored power supply line; and
a voting circuit having inputs coupled to outputs of the plurality of comparators, wherein an output of the voting circuit is configured to provide a signal indicative of a brown out condition of a power source coupled to the monitored power supply line, and the voting circuit comprises:
at least one c-element, wherein a single c-element of the at least one c-element has inputs coupled to the outputs of at least two comparators of the plurality of comparators, or
a majority gate having inputs coupled to the outputs of at least three comparators of the plurality of comparators.