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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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BQ76972

現行
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產品詳細資料

Number of series cells (min) 3 Vin (max) (V) 80 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 Device type Cell monitor and balancer, Protector Number of series cells (max) 16 Operating temperature range (°C) -40 to 85 Rating Catalog Battery overvoltage protection (min) (V) 1.012 Battery overvoltage protection (max) (V) 5.566 Communication interface HDQ, I2C, SPI
Number of series cells (min) 3 Vin (max) (V) 80 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 Device type Cell monitor and balancer, Protector Number of series cells (max) 16 Operating temperature range (°C) -40 to 85 Rating Catalog Battery overvoltage protection (min) (V) 1.012 Battery overvoltage protection (max) (V) 5.566 Communication interface HDQ, I2C, SPI
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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類型 標題 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 BQ769x2 Frequently Asked Questions PDF | HTML 2024年 3月 29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

設計與開發

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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 (...)

支援產品和硬體

支援產品和硬體

產品
Battery monitors & balancers
BQ76905 — 具有高準確度電池電壓量測且適用於 2S 到 5S 的低功率監控器和保護器 BQ76907 — 具有高準確度電池電壓量測且適用於 2S 到 7S 的低功率監控器和保護器 BQ769142 — 適用於鋰離子、鋰聚合物和 LiFePO4 電池的 3-s 至 14-s 高準確度電池監測器和保護器 BQ76942 — 3 串聯至 10 串聯多芯電池監控器和保護器 BQ76952 — 適用於鋰離子、鋰聚合物和 LiFePO4 的 3-s 至 16-s 高準確度電池監控器和保護器 BQ76972 — 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
Battery charger ICs
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Battery fuel gauges
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電池保護器
BQ77307 — 具有高準確度電池電壓量測且適用於 2S 到 7S 的低功耗監控器
硬體開發
開發板
MKST-3P-ALT-EV2300 — 適用 EV2300 通訊收發器的 MKS 技術替代方案
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參考設計

TIDA-010247 — High-accuracy battery management unit reference design for 48–1500V energy storage system

This reference design is a high-side, N-channel MOSFET control (up to 32s) battery management unit (BMU), using the stacked BQ769x2 battery monitor family. This design also integrates a CAN interface for BMU stacking high-voltage (up to 1500V) energy storage station applications. High-side, (...)
Design guide: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
TQFP (PFB) 48 Ultra Librarian
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