SLUAAQ5 May 2024 BQ769142 , BQ76942 , BQ76952 , BQ76972
While the device does not integrate a gauging feature, does provides accurate data on voltage, current, accumulated charge, and temperature measurements which are all necessary to generate accurate SOC and SOH measurements. The data measured by the BQ769x2 is passed to a microcontroller unit (MCU) which can perform the calculations if desired. An algorithm can be implemented to perform gauging without the need for any additional devices.
A gauging algorithm with a high level of accuracy is quite complex and often requires a large amount of software development. Therefore, a stack-level gauge like the BQ34Z100-G1 can be used in unison to provide SOC and SOH. This reference design shows how the BQ347Z100-G1 can be interfaced with battery monitors.