BQ76922
- Battery monitoring capability for 3-series to 5-series cells
- Integrated charge pump for high-side NFET protection with optional autonomous recovery
- Extensive protection suite including voltage, temperature, current, and internal diagnostics
- Two independent ADCs
- Support for simultaneous current and voltage sampling
- High-accuracy coulomb counter with input offset error < 1µV (typical)
- High accuracy cell voltage measurement < 10mV (typical)
- Wide-range current applications (±200mV measurement range across sense resistor)
- Integrated secondary chemical fuse drive protection
- Autonomous or host-controlled cell balancing
- Multiple power modes (typical battery pack
operating range conditions)
- NORMAL mode: 286µA
- Multiple SLEEP mode options: 24µA to 41µA
- Multiple DEEPSLEEP mode options: 9µA to 10µA
- SHUTDOWN mode: 1µA
- High-voltage tolerance of 60V on cell connect and select additional pins
- Tolerant of random cell attach sequence on production line
- Support for temperature sensing using internal sensor and up to five external thermistors
- Integrated one-time-programmable (OTP) memory programmable by customers on production line
- Communication options include 400kHz I2C, and HDQ one-wire interface
- Programmable LDO for external system usage
- 32-pin QFN package (RSN)
The Texas Instruments BQ76922 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 5-series Li-ion, Li-polymer, and LiFePO4 battery packs. The device includes a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host controlled cell balancing. Integration includes high-side charge-pump NFET drivers, a programmable LDO for external system use, and a host communication peripheral supporting 400kHz I2C and HDQ one-wire standards. The BQ76922 device is available in a 32-pin 4 × 4 mm QFN package.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | BQ76922 3-Series to 5-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4 Battery Packs datasheet (Rev. A) | PDF | HTML | 2024/4/3 | ||
| * | 使用指南 | BQ76922 Technical Reference Manual | PDF | HTML | 2024/4/16 | ||
| 應用說明 | Cell Balancing With BQ769x2 Battery Monitors (Rev. A) | PDF | HTML | 2022/2/15 | |||
| 證書 | BQ76922EVM EU Declaration of Conformity (DoC) | 2021/8/26 | ||||
| 應用說明 | BQ769x2 Software Development Guide (Rev. B) | PDF | HTML | 2021/8/26 | |||
| 應用說明 | BQ769x2 Calibration and OTP Programming Guide (Rev. A) | PDF | HTML | 2021/8/6 | |||
| 應用說明 | Parallel Paths with the BQ769x2 Battery Monitor | 2020/1/9 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
BQ76922EVM — BQ76922 評估模組
BQSTUDIO — Battery Management Studio (bqStudio) 軟體
Battery Management Studio (bqStudio) 提供全套的強固工具，可協助評估、設計、配置、測試或使用 TI 電池管理產品的程序。其中包括可提供暫存器及資料記憶體完整存取的功能，包括支援即時觀看、繪圖和記錄、傳送命令的簡易介面、直接低階通訊和 I/O，以及用於配置、校準和執行學習週期的自動化和引導支援，進而產生實用的檔案，以利裝置投入生產。
在 bqStudio 中也支援舊產品，如 bq20xxx 和 bq30xxx。從適當的產品頁面下載特定的評估軟體。此外，您為 bqStudio 下載的最新化學更新程式需要 bqStudio 的更新版。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RSN) | 32 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。