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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

Number of series cells (min) 9 Vin (max) (V) 70 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 Number of series cells (max) 14 Operating temperature range (°C) -40 to 125 Rating Catalog Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 5.1 TI functional safety category Functional Safety-Compliant Communication interface Daisy Chain, Daisy chain, I2C controller, SPI controller, UART
Number of series cells (min) 9 Vin (max) (V) 70 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 Number of series cells (max) 14 Operating temperature range (°C) -40 to 125 Rating Catalog Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 5.1 TI functional safety category Functional Safety-Compliant Communication interface Daisy Chain, Daisy chain, I2C controller, SPI controller, UART
HTQFP (PAP) 64 144 mm² 12 x 12
  • 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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* Data sheet BQ78706 Functional Safety-Compliant 14S Battery Monitor datasheet PDF | HTML 2024年 10月 16日

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設計工具

BQ78706-DESIGN — Design folder

Contains datasheet and design information
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產品
電池監控器和平衡器
BQ78706 — 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
要求
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。
Design guide: PDF
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HTQFP (PAP) 64 Ultra Librarian
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