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電池管理 IC
電池監控器和平衡器

BQ78706

現行

符合 ASIL-B 規範的車用 14-s 可堆疊電池監控器、平衡器和整合式保護器

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產品規格表

BQ78706

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of series cells (max) 14 Number of series cells (min) 9 Features Cell balancing, High precision, I2C support, Integrated ADC, Multi-cell support, Open-wire detection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 70 Communication interface Daisy Chain, Daisy chain, I2C controller, SPI controller, UART Operating temperature range (°C) -40 to 125 Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 5.1 TI functional safety category Functional Safety-Compliant
Rating Catalog Number of series cells (max) 14 Number of series cells (min) 9 Features Cell balancing, High precision, I2C support, Integrated ADC, Multi-cell support, Open-wire detection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Vin (max) (V) 70 Communication interface Daisy Chain, Daisy chain, I2C controller, SPI controller, UART Operating temperature range (°C) -40 to 125 Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 5.1 TI functional safety category Functional Safety-Compliant
HTQFP (PAP) 64 144 mm² (12 mm × 12 mm)
  • Functional Safety-Compliant
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL B
    • Hardware capability up to ASIL B
  • Measure 9 to 14 batteries in series per device, stackable up to 64 devices
  • Dedicated ADC with ±3.2mV accuracy over temperature
  • Cell voltage and battery pack current measurement synchronized to 64µs
  • Support limp mode with full redundancy
  • Integrated post-ADC configurable digital low-pass filters
  • Supports busbar without affecting measurement accuracy
  • 12 GPIOs for temp sensor/analog/digital/I2C controller/SPI controller
  • Internal cell balancing
    • Balancing at 300mA
    • User controlled PWM adjustment cell balancing current
    • Built-in balancing thermal management with automatic pause and resume control
  • Robust daisy chain communication and support Ring Architecture
  • Hardware reset by host simulates POR-like event without battery removal
  • Support transformer and capacitive isolation
  • On chip memory for one time custom programming
  • Low power mode current <6µA
  • Compatible with BQ79600-Q1 with SPI/UART interface
  • Functional Safety-Compliant
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL B
    • Hardware capability up to ASIL B
  • Measure 9 to 14 batteries in series per device, stackable up to 64 devices
  • Dedicated ADC with ±3.2mV accuracy over temperature
  • Cell voltage and battery pack current measurement synchronized to 64µs
  • Support limp mode with full redundancy
  • Integrated post-ADC configurable digital low-pass filters
  • Supports busbar without affecting measurement accuracy
  • 12 GPIOs for temp sensor/analog/digital/I2C controller/SPI controller
  • Internal cell balancing
    • Balancing at 300mA
    • User controlled PWM adjustment cell balancing current
    • Built-in balancing thermal management with automatic pause and resume control
  • Robust daisy chain communication and support Ring Architecture
  • Hardware reset by host simulates POR-like event without battery removal
  • Support transformer and capacitive isolation
  • On chip memory for one time custom programming
  • Low power mode current <6µA
  • Compatible with BQ79600-Q1 with SPI/UART interface

The BQ78706 provides high-accuracy cell voltage measurements for up to 14S battery modules in high-voltage battery management systems in energy storage systems (ESS) and portable power stations (PPS). This device has a state-of-the-art ADC architecture/measurement system meeting stringent safety requirements. With the daisy-chain isolated by transformer (or capacitor), the device is designed for centralized or distributed architectures in residential, commercial, or grid-scale energy storage systems.

The BQ78706 provides high-accuracy cell voltage measurements for up to 14S battery modules in high-voltage battery management systems in energy storage systems (ESS) and portable power stations (PPS). This device has a state-of-the-art ADC architecture/measurement system meeting stringent safety requirements. With the daisy-chain isolated by transformer (or capacitor), the device is designed for centralized or distributed architectures in residential, commercial, or grid-scale energy storage systems.
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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 BQ78706 Functional Safety-Compliant 14S Battery Monitor datasheet PDF | HTML 2024/10/16
Application brief 高電壓 BMS 如何強化安全性與電池續航力 PDF | HTML Download English Version PDF | HTML 2025/4/29

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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)。

韌體

TIDA-HVBMS-ESS-PLTFRM-FW — 適用於使用 BQ78706 電池監控器的高電壓儲能系統的 TIDA-HVBMS-ESS-Pltfrm 組合解決方案之韌體檔案

Firmware files for TIDA-HVBMS-ESS-PLTFRM combo solution for High-Voltage Energy Storage Systems using BQ78706 battery monitor
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參考設計

TIDA-010279 — 適用於儲能系統且最高 1500V 的可堆疊電池管理單元參考設計

此參考設計是完整電池芯溫度感測與高電池芯電壓準確度的鋰離子 (Li-ion)、磷酸鐵鋰 (LiFePO4) 電池組 (52s)。此設計可監控每個電池芯電壓、電池芯溫度，並保護電池組，以確保安全使用。此設計支援菊輪鍊與控制器區域網路 (CAN) 介面，以針對最高 1500V 的電池儲能系統實現可堆疊通訊。這些功能讓此參考設計適用於高容量電池組應用。
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參考設計

TIDA-010976 — 適用於儲能系統的 52s 無線電池管理單元參考設計

此參考設計可為具高電池芯電壓準確度的能源儲存系統提供 52s 無線電池管理單元 (wBMU)。wBMU 使用無線通訊技術，即時將每個電池芯的電壓和溫度資料傳遞至主機控制器。此設計可避免繁瑣製程、減少頻繁維護需求，並將連接器與線束的故障率降到最低，以克服有線電池管理系統 (BMS) 架構中的挑戰。無線通訊可減少所需纜線和連接器的數量，降低系統重量和成本。
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HTQFP (PAP) 64 Ultra Librarian
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