BQ27Z561 firmware: impedance track battery gas gauge solution for 1-s cell li-ion battery
BQ27Z561-R2-DEVICE-FW
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Key Document
- BQ27Z561-R2 Technical Reference Manual (Rev. B)
(PDF 965 KB)
07 May 2020
Description
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.
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
- Added hibernate mode to enable < 3uA power mode
Technical documentation
Application notes (1)
| Title | Type | Size (KB) | Date |
| 73 | 26 Feb 2020 |
User guides (1)
| Title | Type | Size (KB) | Date |
| 965 | 07 May 2020 |
Related Products
Software development (1)
-
BQ27Z561 Firmware
(ZIP, 4428 KB) 06 Mar 2020
TI Devices (2)
| Part Number | Name | Product Family |
|---|---|---|
| BQ27Z561 | Impedance Track™ integrated circuit gas gauge solution for 1-series | Battery management ICs |
| BQ27Z561-R1 | Impedance Track™ battery gas gauge solution for 1-series cell Li-ion battery packs | Battery management ICs |
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