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電池管理 IC
電池監控器和平衡器

BQ76972

現行

適用於鋰離子、鋰聚合物和磷酸鐵鋰的 3s 至 16s 高準確度電池監控器和保護器

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產品規格表
使用指南

BQ76972

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of series cells (max) 16 Number of series cells (min) 3 Features Autonomous Mode, Coulomb Counter, Digital output, High-side FET drive, I2C support, LDO output, Low-Power Sleep Mode, Multi-cell support, One-Time Programmable (OTP) memory, Open wire (OW), Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Power-save mode, Scratchpad memory, Short-current detection, Sleep Mode, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 80 Communication interface HDQ, I2C, SPI Device type Cell monitor and balancer, Protector Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1.012 Battery overvoltage protection (max) (V) 5.566
Rating Catalog Number of series cells (max) 16 Number of series cells (min) 3 Features Autonomous Mode, Coulomb Counter, Digital output, High-side FET drive, I2C support, LDO output, Low-Power Sleep Mode, Multi-cell support, One-Time Programmable (OTP) memory, Open wire (OW), Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Power-save mode, Scratchpad memory, Short-current detection, Sleep Mode, Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 80 Communication interface HDQ, I2C, SPI Device type Cell monitor and balancer, Protector Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 1.012 Battery overvoltage protection (max) (V) 5.566
TQFP (PFB) 48 81 mm² (9 mm × 9 mm)
  • Battery monitoring capability for 3-series to 16-series cells
  • High accuracy cell voltage measurement of ±3.0 mV
  • 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 < 1 µV (typical)
  • Wide-range current applications (±200-mV 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: 286 µA
    • Multiple SLEEP mode options: 24 µA to 41 µA
    • Multiple DEEPSLEEP mode options: 9 µA to 10 µA
    • SHUTDOWN mode: 1 µA
  • High-voltage tolerance of 85 V 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 nine external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400-kHz I 2C, SPI, and HDQ one-wire interface
  • Dual-programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)
  • Battery monitoring capability for 3-series to 16-series cells
  • High accuracy cell voltage measurement of ±3.0 mV
  • 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 < 1 µV (typical)
  • Wide-range current applications (±200-mV 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: 286 µA
    • Multiple SLEEP mode options: 24 µA to 41 µA
    • Multiple DEEPSLEEP mode options: 9 µA to 10 µA
    • SHUTDOWN mode: 1 µA
  • High-voltage tolerance of 85 V 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 nine external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400-kHz I 2C, SPI, and HDQ one-wire interface
  • Dual-programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)

The Texas Instruments BQ76972 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 16-series Li-ion, Li-polymer, and LiFePO 4 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, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I 2C, SPI, and HDQ one-wire standards. The BQ76972 device is available in a 48-pin TQFP package.

The Texas Instruments BQ76972 device is a highly integrated, high-accuracy battery monitor and protector for 3-series to 16-series Li-ion, Li-polymer, and LiFePO 4 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, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I 2C, SPI, and HDQ one-wire standards. The BQ76972 device is available in a 48-pin TQFP package.
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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 BQ76972 3-Series to 16-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4Battery Packs datasheet PDF | HTML 2023/11/23
* 使用指南 BQ76972 Technical Reference Manual PDF | HTML 2023/6/26
應用說明 Why is short-circuit protection more challenging for high- side driver battery packs than low-side driver? PDF | HTML 2026/1/23
應用說明 Enhance Temperature Measurement Performance With BQ769x2 and TMP6x for Battery Management System PDF | HTML 2025/11/14
應用說明 Design Considerations of Current Sensing With BQ769x2 Family for Battery Management System (Rev. A) PDF | HTML 2025/8/1
應用說明 BQ769x2 Frequently Asked Questions PDF | HTML 2024/3/29
技術文章 3 major design challenges to solve in battery energy storage systems PDF | HTML 2024/1/30
Application brief Scaling accurate battery management designs across energy storage systems PDF | HTML 2023/10/20
應用說明 Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET PDF | HTML 2023/2/9
技術文章 Pack a punch in battery pack systems with low-cost MCUs PDF | HTML 2021/11/16
應用說明 Pin Equivalent Diagrams for the BQ76952, BQ76942, and BQ769142 2021/5/6
應用說明 BQ76952 High Voltage Stress Report PDF | HTML 2021/2/25
技術文章 How to stack battery monitors for high-cell-count industrial applications PDF | HTML 2021/2/11
應用說明 BQ76942 IEC ESD 61000-4-2 ESD Test Report 2020/11/16
技術文章 CURRENTly questioning the accuracy of your battery monitor? Improve battery safety PDF | HTML 2020/5/28
技術文章 Improving voltage measurement accuracy in battery monitoring systems PDF | HTML 2020/4/1
技術文章 Improving temperature measurement accuracy in battery monitoring systems PDF | HTML 2020/2/20
應用說明 Parallel Paths with the BQ769x2 Battery Monitor 2020/1/9
技術文章 Next-generation battery monitors: how to improve battery safety while improving ac PDF | HTML 2020/1/6

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應用軟體及架構

BQ769X2-THERMISTOR-COEFF-CALCULATOR — BQ76952/42 thermistor temperature optimizer - calculate the thermistors coefficients for T range

The BQ769x2 family of battery monitors can support multiple external thermistors. The device includes an internal pullup resistor to bias the thermistor during measurement. The internal pullup resistor has two options which can set the pullup to 18 kΩ or 180 kΩ. The 18-kΩ option (...)

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應用軟體及架構

BQSTUDIO-STABLE — Battery Management Studio (bqStudio) Software – stable version downloads for bq series of TI battery fuel gauges

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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應用軟體及架構

BQSTUDIO-TEST — Battery Management Studio (bqStudio) Software – Beta version downloads

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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程式碼範例或展示

SLUC701 — Microcontroller Code Examples for BQ769x2 Battery Monitors

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參考設計

TIDA-010247 — 適用於 48–1500V 儲能系統的高準確度電池管理單元參考設計

此參考設計為高壓側 N 通道 MOSFET 控制（高達 32 個）電池管理單元 (BMU)，且使用堆疊式 BQ769x2 電池監控器系列。此設計也整合了 CAN 介面，適用於 BMU 堆疊高電壓（高達 1500V）儲能站應用。高壓側 N 通道 MOSFET 架構與最佳化驅動電路，可提供簡易的開關控制。此參考設計可實現低待機與運送模式耗電量，並可將兩組之間的電流差距最佳化。此參考設計適用於 48–1500V 儲能系統。
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TQFP (PFB) 48 Ultra Librarian
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