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電池管理 IC
電池監控器和平衡器

BQ76922

現行

可串聯三至五芯電池的鋰離子電池和磷酸鋰電池監控器

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產品規格表

BQ76922

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of series cells (max) 5 Number of series cells (min) 3 Features Cell balancing, High-side driver, I2C support, Integrated ADC, Multi-cell support, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Programmable EEPROM or EPROM, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 27.5 Communication interface HDQ, I2C Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Operating current (typ) (µA) 250
Rating Catalog Number of series cells (max) 5 Number of series cells (min) 3 Features Cell balancing, High-side driver, I2C support, Integrated ADC, Multi-cell support, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Programmable EEPROM or EPROM, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 27.5 Communication interface HDQ, I2C Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5 Operating current (typ) (µA) 250
WQFN (RSN) 32 16 mm² 4 x 4
  • 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)
  • 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.

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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重要文件 類型 標題 格式選項 日期
* Data sheet 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年 4月 3日
User guide BQ76922 Technical Reference Manual PDF | HTML 2024年 4月 16日
Application note Cell Balancing With BQ769x2 Battery Monitors (Rev. A) PDF | HTML 2022年 2月 15日
Certificate BQ76922EVM EU Declaration of Conformity (DoC) 2021年 8月 26日
Application note BQ769x2 Software Development Guide (Rev. B) PDF | HTML 2021年 8月 26日
Application note BQ769x2 Calibration and OTP Programming Guide (Rev. A) PDF | HTML 2021年 8月 6日
Application note Parallel Paths with the BQ769x2 Battery Monitor 2020年 1月 9日

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開發板

BQ76922EVM — BQ76922 評估模組

BQ76922 評估模組 (EVM) 是一套適用於 BQ76922 (三芯至五芯鋰離子 (Li-ion) 電池監控積體電路) 的完整評估系統。EVM 包含 BQ76922 電路模組，於簡易評估 BQ76922 監控功能。電路模組包含一個 BQ76922 積體電路 (IC)、感測電阻器、功率 FET，以及防止五串聯電池芯鋰離子或鋰聚合物電池組中出現電池過充、過放電、短路和過電流放電所需的其他所有板載元件。電路模組直接連接電池中的電池芯，或可與電源供應器和隨附的電池芯模擬器電阻器連接。藉助板載介面或相容的外部介面電路板和 Microsoft® Windows® 式 PC 圖形使用者介面 (...)
使用指南: PDF | HTML
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應用軟體及架構

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。
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