BQ27Z561-R2-DEVICE-FW

The BQ27Z561-R2-DEVICE-FW is a firmware (FW) release that can be flashed onto any existing hardware such as the BQ27Z561 or BQ27Z561-R1 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, and authentication for 1-series cell li-ion and li-polymer battery packs.

Using its integrated high-performance analog peripherals, the BQ27Z561-R2-DEVICE-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.

SHA-2 authentication, with secure memory for authentication keys, enables identification of genuine battery packs.

• 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
• Added hibernate mode to enable < 3uA power mode