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電池管理 IC
電池監控器和平衡器

BQ76930

現行

6 至 10 串聯芯鋰電池和磷酸鐵鋰電池監控器 (bq76940 系列)

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產品規格表

BQ76930

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of series cells (max) 10 Number of series cells (min) 6 Features Digital output, LDO output, Low-side driver, Overcurrent in discharging protection, Short-current detection Vin (max) (V) 50 Communication interface I2C Device type Cell monitor and balancer Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 3.15 Battery overvoltage protection (max) (V) 4.7 Operating current (typ) (µA) 40
Rating Catalog Number of series cells (max) 10 Number of series cells (min) 6 Features Digital output, LDO output, Low-side driver, Overcurrent in discharging protection, Short-current detection Vin (max) (V) 50 Communication interface I2C Device type Cell monitor and balancer Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 3.15 Battery overvoltage protection (max) (V) 4.7 Operating current (typ) (µA) 40
TSSOP (DBT) 30 49.92 mm² (7.8 mm × 6.4 mm)
  • AFE monitoring features
    • Pure digital interface
    • Internal ADC measures cell voltage, die temperature, and external thermistor
    • A separate, internal ADC measures pack current (coulomb counter)
    • Directly supports up to three thermistors (103AT)
  • Hardware protection features
    • Overcurrent in Discharge (OCD)
    • Short Circuit in Discharge (SCD)
    • Overvoltage (OV)
    • Undervoltage (UV)
    • Secondary protector fault detection
  • Additional features
    • Integrated cell balancing FETs
    • Charge, discharge low-side NCH FET drivers
    • Alert interrupt to host microcontroller
    • 2.5-V or 3.3-V output voltage regulator
    • No EEPROM programming necessary
    • High supply voltage absolute maximum (up to 108 V)
    • Simple I2C compatible interface (CRC option)
    • Random cell connection tolerant
  • AFE monitoring features
    • Pure digital interface
    • Internal ADC measures cell voltage, die temperature, and external thermistor
    • A separate, internal ADC measures pack current (coulomb counter)
    • Directly supports up to three thermistors (103AT)
  • Hardware protection features
    • Overcurrent in Discharge (OCD)
    • Short Circuit in Discharge (SCD)
    • Overvoltage (OV)
    • Undervoltage (UV)
    • Secondary protector fault detection
  • Additional features
    • Integrated cell balancing FETs
    • Charge, discharge low-side NCH FET drivers
    • Alert interrupt to host microcontroller
    • 2.5-V or 3.3-V output voltage regulator
    • No EEPROM programming necessary
    • High supply voltage absolute maximum (up to 108 V)
    • Simple I2C compatible interface (CRC option)
    • Random cell connection tolerant

The BQ769x0 family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies. The BQ769x0 is designed with low power in mind: Sub-blocks within the IC may be enabled or disabled to control the overall chip current consumption, and a SHIP mode provides a simple way to put the pack into an ultra-low power state.

The BQ76920 device supports up to 5-series cells or typical 18-V packs, the BQ76930 handles up to 10-series cells or typical 36-V packs, and the BQ76940 works for up to 15-series cells or typical 48-V packs. A variety of battery chemistries may be managed with these AFEs, including Li-ion, Li-iron phosphate, and more. Through I2C, a host controller can use the BQ769x0 to implement many battery pack management functions, such as monitoring (cell voltages, pack current, pack temperatures), protection (controlling charge/discharge FETs), and balancing. Integrated A/D converters enable a purely digital readout of critical system parameters, with calibration handled in TI’s manufacturing process.

The BQ769x0 family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies. The BQ769x0 is designed with low power in mind: Sub-blocks within the IC may be enabled or disabled to control the overall chip current consumption, and a SHIP mode provides a simple way to put the pack into an ultra-low power state.

The BQ76920 device supports up to 5-series cells or typical 18-V packs, the BQ76930 handles up to 10-series cells or typical 36-V packs, and the BQ76940 works for up to 15-series cells or typical 48-V packs. A variety of battery chemistries may be managed with these AFEs, including Li-ion, Li-iron phosphate, and more. Through I2C, a host controller can use the BQ769x0 to implement many battery pack management functions, such as monitoring (cell voltages, pack current, pack temperatures), protection (controlling charge/discharge FETs), and balancing. Integrated A/D converters enable a purely digital readout of critical system parameters, with calibration handled in TI’s manufacturing process.
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技術文件

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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 BQ769x0 3-Series to 15-Series Cell Battery Monitor Family for Li-Ion and Phosphate Applications datasheet (Rev. I) PDF | HTML 2022/3/14
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
使用指南 bq76920, bq76930, bq76940 AFE FAQ (Rev. A) PDF | HTML 2021/10/1
技術文章 Protector, monitor or gauge – selecting the correct battery electronics for your L PDF | HTML 2019/6/13
應用說明 BQ769x0 Pin Equivalent Diagrams (Rev. A) 2019/4/3
應用說明 UART-Based Communication Protocol for Intermodule Communication of Light Vehicle 2017/5/17
應用說明 bq769x0 BMS Configurations for Cordless Appliances 2017/3/23
應用說明 Fault Monitoring for High-Availability Systems using the bq769x0 2017/2/3
應用說明 Embedded Scheduler in Cell Battery Monitor of the bq769x0 2016/8/10
應用說明 bq769x0 Family Top 10 Design Considerations (Rev. A) PDF | HTML 2016/5/2
應用說明 bq769x0 boot switch alternatives 2015/12/21
應用說明 I2C Communication Sample Code for the bq76940 with CRC Based on the MSP430 (Rev. B) 2014/5/14

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)。

開發板

BQ76930EVM — 具有 BQ78350 的 BQ76930 評估板

bq76930EVM 是用於評估 bq76930 類比前端 (AFE) 和 bq78350 電池管理控制器的填充電路板，可作為完整的電池組監控和保護解決方案的一部分，適用於 6 至 10 串聯鋰離子、磷酸鐵鋰電池和更多電池化學物質。  搭配 EV2400 介面轉接器和網站提供的適當評估軟體使用時，可提供完整環境，以評估 AFE 或控制器配置的暫存器控制，並展示使用這些裝置對電池系統的電流控制。

 

 

使用指南: PDF
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韌體

SLUC583 — bq769x0 I2C Sample Code With CRC

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支援軟體

SLUC539 — bq76940/bq76930/bq76920 Evaluation Software

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參考設計

TIDA-00449 — 10s 電池組監控、平衡和全面保護。50A 放電參考設計

此參考設計已通過測試，適用於電動工具的 10 節串聯電池組監測、平衡與保護功能。電動工具日益廣泛採用高功率密度的鋰離子或磷酸鐵鋰電池組，這些電池組需受到保護，以防因錯誤充電或放電而引發爆炸。TIDA-00449 亦滿足電動工具電池組在高連續電流放電時的熱管理要求。

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參考設計

TIDA-01093 — 適用於 20 節串聯電池應用的工業電池管理模組參考設計

高序列電池芯數電池 (>15s) 系統在工業應用中變得越來越普遍。這類應用注重成本效益，需要簡單的解決方案，包括監控、保護及控制，甚至是 SOC（充電狀態）資訊，而不僅僅是基本的獨立硬體保護。此設計為完整的電池組端解決方案提供平台。bq76930 整合了所有獨立硬體保護功能，並實作了穩健的通訊介面，供主機裝置讀取電池資訊。
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TSSOP (DBT) 30 Ultra Librarian
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