US 12,032,036 B2
Voltage correction in battery voltage monitors
Vishnu Ravinuthula, Dallas, TX (US); Takao Oshida, Plano, TX (US); and Geoffrey Grimmer, Richardson, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Mar. 5, 2021, as Appl. No. 17/194,033.
Claims priority of provisional application 62/985,754, filed on Mar. 5, 2020.
Prior Publication US 2021/0278474 A1, Sep. 9, 2021
Int. Cl. H02J 7/00 (2006.01); G01R 31/36 (2020.01); G01R 31/396 (2019.01); H03M 1/44 (2006.01)
CPC G01R 31/396 (2019.01) [G01R 31/3648 (2013.01); H02J 7/0071 (2020.01); H03M 1/44 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a plurality of analog front ends (AFEs);
a plurality of analog-to-digital converters (ADCs), wherein each one of the plurality of ADCs is coupled to one corresponding AFE of the plurality of AFEs, and wherein the plurality of ADCs produce a plurality of digital signals;
a plurality of digital channel registers, wherein each one of the plurality of digital channel registers is coupled to one corresponding ADC of the plurality of AFEs; and
a processor coupled to at least one ADC and configured to adjust the plurality of digital signals based on a plurality of common mode voltage values and a plurality of common mode to differential gain values associated with the plurality of AFEs.