Fast Cell Balancing Using External MOSFET (Rev. A)

Texas Instruments

Published Date: 01/26/2009

Description

The need for cell balancing comes from the fact that cell-to-cell differences in self-discharge capacity and impedance can lead to different charge states among the cells. However the charger terminates the charge based on the summed voltage only which may leave some cells undercharged and others overcharged. To remedy this imbalance and to achieve the goal of having all cells reaching 100% st

Parts

Part Number Name Companion Part
BQ20Z45DBT-R1 BQ20Z45DBT-R1 Buy Datasheet
BQ20Z45DBTR-R1 BQ20Z45DBTR-R1 Buy Datasheet
BQ20Z70PW-V150 BQ20Z70PW-V150 Buy Datasheet
BQ20Z70PW-V160 BQ20Z70PW-V160 Buy Datasheet
BQ20Z70PWR-V150 BQ20Z70PWR-V150 Buy Datasheet
BQ20Z70PWR-V160 BQ20Z70PWR-V160 Buy Datasheet
BQ20Z80ADBT-V110G4 BQ20Z80ADBT-V110G4 Buy Datasheet
BQ20Z80ADBTR-V110 BQ20Z80ADBTR-V110 Buy Datasheet
BQ20Z80DBT BQ20Z80DBT Buy Datasheet
BQ20Z80DBT-V101 BQ20Z80DBT-V101 Buy Datasheet
BQ20Z80DBT-V101G4 BQ20Z80DBT-V101G4 Buy Datasheet
BQ20Z80DBT-V102 BQ20Z80DBT-V102 Buy Datasheet
BQ20Z80DBTR-V102 BQ20Z80DBTR-V102 Buy Datasheet
BQ20Z80DBTR-V102G4 BQ20Z80DBTR-V102G4 Buy Datasheet
BQ20Z80DBTR-V110 BQ20Z80DBTR-V110 Buy Datasheet
BQ20Z90DBT BQ20Z90DBT Buy Datasheet
BQ20Z90DBT-V150 BQ20Z90DBT-V150 Buy Datasheet
BQ20Z90DBT-V150G4 BQ20Z90DBT-V150G4 Buy Datasheet
BQ20Z90DBTR-V150 BQ20Z90DBTR-V150 Buy Datasheet
BQ20ZDBTR-V102G4 BQ20ZDBTR-V102G4 Buy Datasheet
BQ29330DBT BQ29330DBT Buy Datasheet
BQ29330DBTG4 BQ29330DBTG4 Buy Datasheet
BQ29330DBTR BQ29330DBTR Buy Datasheet
BQ29330DBTRG4 BQ29330DBTRG4 Buy Datasheet