Firmware
BMS-BQ27Z855-FW — bq27z855 battery gauge firmware (early access)
TI BGP FW release page for the bq27z855 battery gauge device. These versions are for evaluation only, not for production or distribution.
BQ27Z855
Single-cell Dynamic Z-Track™ fuel gauge with protector, current limiter and authentication
Datenblatt
BQ27Z855
- Fully integrated battery gas gauge, protector, current limiter, and authenticator
- Ultra-low power 32-bit RISC processor
- Battery chemistries supported include Li-ion with LCO, NMC, or LFP cathodes and with graphite or Si-anodes
- High-accuracy analog front end with two independent ADCs:
- 18-bit low offset delta-sigma ADC for Coulomb counting with ±100mV input range
- 16-bit delta-sigma ADC for cell voltage and internal and external temperature sensors
- Support for simultaneous current and voltage sampling
- High-side or low-side current sensing for system flexibility
- Battery fuel gauging based on patented Dynamic Z-Track technology
- Models battery impedance for accurate time-to-empty predictions for static and dynamic loads
- Automatically adjusts for aging, temperature, and rate-induced effects on the battery
- Programmable safety and protection:
- Hardware- and firmware-level OVP, UVP, OCC, OCD, SCD protections
- Overtemperature (OT) and undertemperature (UT) protections
- Integrated high efficiency high-side NMOS protection FET drivers
- Current limiter with programmable CC-CV profile during charge mode
- Ideal diode controller during discharge mode
- Up to 1MHz I2C bus communications interface with 1.2V- and 1.8V-level support
- ECC ECDSA and SHA-256 authentication support with secure memory
- Ultra-compact, 15-ball DSBGA package (YAH)
The Texas Instruments BQ27Z855 Dynamic Z-Trackgas gauge solution is a fully integrated, accurate 1-series cell gas gauge, protection, current limiter, and authentication solution.
The BQ27Z855 device provides a fully integrated pack-based solution with a flash programmable reduced instruction-set CPU (RISC), safety protection, current limiter, ideal diode controller, and authentication for 1-series cell Li-ion and Li-polymer battery packs.
The BQ27Z855 gas gauge communicates through an I2C compatible interface and combines an ultra-low power RISC processor, high accuracy analog measurement capabilities, integrated flash memory, high-side NMOS FET drivers, and ECC ECDSA and SHA-2 authentication to provide a complete, high-performance battery management solution.
Technische Dokumentation
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| Top-Dokumentation | Typ | Titel | Format-Optionen | Datum |
|---|---|---|---|---|
| * | Data sheet | BQ27Z855 Dynamic Z-Track™ Gauge with Integrated Protection, Current Limiter, and Authentication for 1 Cell Battery Packs datasheet | PDF | HTML | 12 Feb 2026 |
| Application note | Dynamic Z-Track™ Technology: An Advanced Battery Gauging Algorithm for Dynamic Load Applications (Rev. A) | PDF | HTML | 15 Jul 2025 | |
| Application note | Implementation of Elliptic Curve Cryptography Authentication on TI Battery Fuel Gauges | PDF | HTML | 28 Mai 2025 | |
| Application note | How to Create and Program Authentication Keys into TI Battery Fuel Gauges | PDF | HTML | 05 Mär 2025 | |
| User guide | BQ27Z855 Technical Reference Manual | PDF | HTML | 28 Feb 2025 | |
| Application note | Battery Gauging Algorithm Comparison | PDF | HTML | 04 Dez 2023 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
Evaluierungsplatine
BQ27Z855EVM — BQ27Z855EVM evaluation module
The BQ27Z855 Evaluation Module (EVM) is a system-level board created to enable users to evaluate the functionalities of the BQ27Z855 fuel gauge within their system. The BQ27Z855 EVM is suitable for applications in which the battery pack is 1-S cell, meaning one series cell. The EVM includes a (...)
Firmware
BQ27Z855-FW — BQ27Z855 device firmware
Unterstützte Produkte und Hardware
GUI für Evaluierungsmodul (EVM)
BQSTUDIO-GUI — Battery Management Studio (bqStudio) Software - Web Based Version
Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
Unterstützte Produkte und Hardware
Software-Programmiertool
BQ-BMS-PROGRAMMER-SW — Command line programmers for BQ products
BQ-BATTERY-PROGRAMMER-SW software development kit (SDK) is a collection of robust software command line tools that assist with the process of programming, testing, or assembling packs that use TI Battery management products. The executables in this software work with the MKST-3P-ALT-EV2300 MKS (...)
Unterstützte Produkte und Hardware
Designtool
BQ27Z855-DS — BQ27Z855 Documentation
Documentation for BQ27Z855 battery gauge and current limiter
Unterstützte Produkte und Hardware
Simulationstool
BQAMBER-SIM-TOOL — BGP release page for BQAMBER-SIM-TOOLS
BGP release page for BQAMBER-SIM-TOOLS
Unterstützte Produkte und Hardware
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| DSBGA (YAH) | 15 | Ultra Librarian |
Bestellen & Qualität
Beinhaltete Information:
- RoHS
- REACH
- Bausteinkennzeichnung
- Blei-Finish/Ball-Material
- MSL-Rating / Spitzenrückfluss
- MTBF-/FIT-Schätzungen
- Materialinhalt
- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
- Werksstandort
- Montagestandort
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Support und Schulungen
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