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BQ27Z758-FW
BQ27Z758 device firmware
bq27z758 v0.03 build 4
Products
Battery fuel gauges
Release Information
Overview
The BQ27Z758-FW is a firmware (FW)-only release that can be flashed onto any existing hardware such as BQ27Z758 product. The firmware incorporates the patented Impedance Track™ technology to create a pack-based solution that provides a rich array of features for gas gauging, protection, differential battery sensing analog output, and authentication for 1-series cell li-ion and li-polymer battery packs.
Using its integrated high-performance analog peripherals, the BQ27Z758-FW firmware enables the device and measures and maintains an accurate record of available capacity, voltage, current, temperature, and other critical parameters in li-ion or li-polymer batteries, and reports this information to the system host controller. The integrated protection provide safety protection against Over Voltage (OVP), Under Voltage (UVP), Over Current in Charge/Discharge (OCC/OCD), Short Circuit Discharge (SCD), and Battery Sensing Protections (BCP, BCN, BDP and BDN).
SHA-2 authentication, with secure memory for authentication keys, enables identification of genuine battery packs.
BQ27Z758-FW is usable on any previous version of the BQ27Z758 hardware.
Features
Supports pack-side gauging including enhanced state of health (SOH) algorithm
Fast QMax update option based on predicted OCV
SHA-256 authentication responder for increased battery pack security
Sophisticated charge algorithms:
- JEITA
- Enhanced charging
- RSOC() charging compensation option
Low current modes options:
- Sleep
- Ship
- Shelf
- Shutdown
What's new
- First version (R0)