Texas Instruments BQ40z80 Battery Pack Manager is a completely integrated, single-chip, pack-based solution that offers several features for protection, gas gauging, and authentication for 2-series up to 7-series cell Li-Ion and Li-Polymer battery packs. The device includes patented Impedance Track technology and uses ECC or SHA-1 authentication with secure memory for authentication keys, allowing identification of genuine battery packs.
The device employs integrated high-performance analog peripherals to measure and support an accurate record of available capacity, current, voltage, temperature, and other critical parameters in Li-Ion or Li-Polymer batteries. The device then reports this data to the system host controller over an SMBus v1.1 compatible interface.
The device offers the available max power and max current to the host system, supporting TURBO Mode 2.0/Intel DBPTv2. The device has eight multifunction pins that can be configured as many options, including ADC inputs, thermal inputs, GPIO pins, a presence pin, LED functions, and display button input. Status and flag registers are employed as interrupts to the host processor when mapped to the GPIOs.
The manager provides many software-based 1st and 2nd-level safety protection features against undervoltage, overvoltage, overcurrent, short-circuit current, overload, and overtemperature conditions, as well as other pack and cell-related faults. The device is offered in a compact 32-lead QFN package that reduces solution cost and size for smart batteries and provides maximum functionality and safety for battery gauging applications.
Typical applications include industrial appliances and robots; handheld garden and power tools; battery powered vacuums; and energy storage systems and UPS.