BQ76930

The bq769x0 family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies. The bq769x0 is designed with low power in mind: Sub-blocks within the IC may be enabled or disabled to control the overall chip current consumption, and a SHIP mode provides a simple way to put the pack into an ultra-low power state.

The bq76920 device supports up to 5-series cells or typical 18-V packs, the bq76930 handles up to 10-series cells or typical 36-V packs, and the bq76940 works for up to 15-series cells or typical 48-V packs. A variety of battery chemistries may be managed with these AFEs, including Lithium Ion, Lithium iron phosphate, and more. Through I2C, a host controller can use the bq769x0 to implement many battery pack management functions, such as monitoring (cell voltages, pack current, pack temperatures), protection (controlling charge/discharge FETs), and balancing. Integrated A/D converters enable a purely digital readout of critical system parameters, with calibration handled in TI’s manufacturing process.

Evaluation report, including

1. the "ESTIMATED" process technology,
2. die size,
3. the "ESTIMATED" number of poly and metal layers
4. Die photos with low resolution

Evaluation only, the work scope of high-resolution chip imaging area and circuit analysis is opened to discussion

• If you decide to perform a circuit analysis, we will provide a complete delivery. including BrigenOne, EDIF format schematics, and PDF file
• The project is still in the "evaluation" phase, and the work scope is open to discussing.
• The information we provide about this project will be somewhat uncertain, as we have not yet performed high-resolution wafer images of each layer.