公开(公告)号：US20210278474A1

公开(公告)日：2021-09-09

申请号：US17194033

申请日：2021-03-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vishnu RAVINUTHULA ,  Takao OSHIDA ,  Geoffrey GRIMMER

IPC: G01R31/396 ,  H03M1/44 ,  G01R31/36 ,  H02J7/00

Abstract: An apparatus comprises a plurality of analog front ends (AFEs) adapted to be coupled to a plurality of battery cells and configured to decrease voltages received from the plurality of battery cells to produce a plurality of AFE voltages. The apparatus further comprises at least one analog-to-digital converter (ADC) coupled to the plurality of AFEs and configured to convert the plurality of AFE voltages to a plurality of corresponding digital signals. The apparatus also comprises a plurality of digital channel registers coupled to the at least one ADC and configured to store the plurality of digital signals, and a processor coupled to the at least one ADC and configured to adjust, in a round-robin calculation scheme, 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.