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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

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 x 9
  • 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 日期
* Data sheet BQ76972 3-Series to 16-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4Battery Packs datasheet PDF | HTML 2023年 11月 23日
Application note Why is short-circuit protection more challenging for high- side driver battery packs than low-side driver? PDF | HTML 2026年 1月 23日
Application note Enhance Temperature Measurement Performance With BQ769x2 and TMP6x for Battery Management System PDF | HTML 2025年 11月 14日
Application note Design Considerations of Current Sensing With BQ769x2 Family for Battery Management System (Rev. A) PDF | HTML 2025年 8月 1日
Application note BQ769x2 Frequently Asked Questions PDF | HTML 2024年 3月 29日
Technical article 3 major design challenges to solve in battery energy storage systems PDF | HTML 2024年 1月 30日
Application brief Scaling accurate battery management designs across energy storage systems PDF | HTML 2023年 10月 20日
User guide BQ76972 Technical Reference Manual PDF | HTML 2023年 6月 26日
Application note Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET PDF | HTML 2023年 2月 9日
Technical article Pack a punch in battery pack systems with low-cost MCUs PDF | HTML 2021年 11月 16日
Application note Pin Equivalent Diagrams for the BQ76952, BQ76942, and BQ769142 2021年 5月 6日
Application note BQ76952 High Voltage Stress Report PDF | HTML 2021年 2月 25日
Technical article How to stack battery monitors for high-cell-count industrial applications PDF | HTML 2021年 2月 11日
Application note BQ76942 IEC ESD 61000-4-2 ESD Test Report 2020年 11月 16日
Technical article CURRENTly questioning the accuracy of your battery monitor? Improve battery safety PDF | HTML 2020年 5月 28日
Technical article Improving voltage measurement accuracy in battery monitoring systems PDF | HTML 2020年 4月 1日
Technical article Improving temperature measurement accuracy in battery monitoring systems PDF | HTML 2020年 2月 20日
Application note Parallel Paths with the BQ769x2 Battery Monitor 2020年 1月 9日
Technical article Next-generation battery monitors: how to improve battery safety while improving ac PDF | HTML 2020年 1月 6日

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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 (...)
使用指南: PDF | HTML
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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) 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 (...)

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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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