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電池管理 IC
電池監控器和平衡器

BQ79654-Q1

現行

符合 ASIL-D 規範的車用 14-S 精密電池監控器、平衡器、電流感測器

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BQ79758-Q1 現行 符合 ASIL-D 規範且具有電流感測的車用 18S 電池監控器與平衡器 This device features improvements such as lower current consumption, integrated overcurrent protection, and higher measurement accuracy (<2mV).

BQ79654-Q1

現行
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產品詳細資料

Rating Automotive Number of series cells (max) 14 Number of series cells (min) 6 Features Cell balancing, 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) 80 Communication interface Daisy chain, SPI controller, UART Device type Cell monitor and balancer Operating temperature range (°C) -40 to 125 Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 4.5 Operating current (typ) (µA) 9000
Rating Automotive Number of series cells (max) 14 Number of series cells (min) 6 Features Cell balancing, 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) 80 Communication interface Daisy chain, SPI controller, UART Device type Cell monitor and balancer Operating temperature range (°C) -40 to 125 Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 4.5 Operating current (typ) (µA) 9000
HTQFP (PAP) 64 144 mm² 12 x 12
  • Qualified for automotive applications
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Compliant
    • Developed for functional safety applications
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • +/- 1.5mV ADC accuracy
  • Pin-package and software compatible device family:
    • Stackable monitor 16S (BQ79616-Q1, BQ79616H-Q1, BQ79656-Q1), 14S (BQ79614-Q1, BQ79654-Q1), and 12S (BQ79612-Q1, BQ79652-Q1)
    • Standalone monitor 48V system (BQ75614-Q1)
  • Supports current-sense measurement
  • Built-in redundancy path for voltage and temperature and current diagnostics
  • Highly accurate cell voltage measurements within 128µs for all cell channels
  • Integrated post-ADC configurable digital low-pass filters
  • Supports bus bar connection and measurement
  • Built-in host-controlled hardware reset to emulate POR-like device reset
  • Supports internal cell balancing
    • Balancing current at 240mA
    • Built-in balancing thermal management with automatic pause and resume control
  • Isolated differential daisy chain communication with optional ring architecture
  • Embedded fault signal and heartbeat through communication line
  • 5V LDO output to power external digital isolator
  • UART/SPI host interface/communication bridge device BQ79600-Q1
  • Built-in SPI master
  • Qualified for automotive applications
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Compliant
    • Developed for functional safety applications
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • +/- 1.5mV ADC accuracy
  • Pin-package and software compatible device family:
    • Stackable monitor 16S (BQ79616-Q1, BQ79616H-Q1, BQ79656-Q1), 14S (BQ79614-Q1, BQ79654-Q1), and 12S (BQ79612-Q1, BQ79652-Q1)
    • Standalone monitor 48V system (BQ75614-Q1)
  • Supports current-sense measurement
  • Built-in redundancy path for voltage and temperature and current diagnostics
  • Highly accurate cell voltage measurements within 128µs for all cell channels
  • Integrated post-ADC configurable digital low-pass filters
  • Supports bus bar connection and measurement
  • Built-in host-controlled hardware reset to emulate POR-like device reset
  • Supports internal cell balancing
    • Balancing current at 240mA
    • Built-in balancing thermal management with automatic pause and resume control
  • Isolated differential daisy chain communication with optional ring architecture
  • Embedded fault signal and heartbeat through communication line
  • 5V LDO output to power external digital isolator
  • UART/SPI host interface/communication bridge device BQ79600-Q1
  • Built-in SPI master

The BQ7965x-Q1 family of devices provides high-accuracy cell voltage measurements for a minimum of 6S to a maximum of 12S (BQ79652-Q1), 14S (BQ79654-Q1), or 16S (BQ79656-Q1) battery modules in less than 200 µs while these devices also support shunt-resistor current sense measurement. The integrated front-end filters enable the system to implement with simple, low voltage raring, differential RC filters on the cell input channels. The integrated, post-ADC, low-pass filters enable filtered, DC-like, voltage measurements. This family of devices also supports integrated current sensing capabilities with option to synchronize with cell voltage measurements for better state of charge (SOC) calculation. The device supports autonomous internal cell balancing with temperature monitoring to auto-pause and resume balancing to avoid an overtemperature condition.

The BQ7965x-Q1 family of devices provides high-accuracy cell voltage measurements for a minimum of 6S to a maximum of 12S (BQ79652-Q1), 14S (BQ79654-Q1), or 16S (BQ79656-Q1) battery modules in less than 200 µs while these devices also support shunt-resistor current sense measurement. The integrated front-end filters enable the system to implement with simple, low voltage raring, differential RC filters on the cell input channels. The integrated, post-ADC, low-pass filters enable filtered, DC-like, voltage measurements. This family of devices also supports integrated current sensing capabilities with option to synchronize with cell voltage measurements for better state of charge (SOC) calculation. The device supports autonomous internal cell balancing with temperature monitoring to auto-pause and resume balancing to avoid an overtemperature condition.
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BQ79652-Q1 現行 符合 ASIL-D 規範的車用 12-S 精密電池監控器、平衡器、電流感測器 Supports up to 12 cells.
BQ79656-Q1 現行 符合 ASIL-D 規範的車用 16-S 精密電池監控器、平衡器、電流感測器 Supports up to 16 cells.

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重要文件 類型 標題 格式選項 日期
* Data sheet BQ7965x-Q1 Functional Safety-Compliant Automotive 16S/14S/12S Battery Monitor, Balancer and Integrated Hardware Protector with Integrated Current Sense datasheet (Rev. C) PDF | HTML 2026年 6月 11日
User guide BQ7961x-Q1 Design Recommendations for High Voltage Automotive BMS (Rev. B) PDF | HTML 2025年 6月 18日
Application note BQ79616-Q1 Daisy Chain Communications PDF | HTML 2023年 10月 26日
User guide BQ79616-Q1 and BQ75614-Q1 Graphical User Interface (GUI) User's Guide 2020年 12月 14日

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開發板

BQ79656EVM-021 — BQ79656-Q1 車用 16-S 精密電池監控器平衡器整合式保護器評估模組

BQ79656EVM-021 是 BQ79656-Q1 的評估模組 (EVM)。BQ79656-Q1 可為六至十六顆電池提供高準確度的通道量測，以及整合式電流量測。BQ79656-Q1 隨附菊輪鍊通訊埠，裝置可堆疊以支援電動車傳動系統電池組中的大型堆疊配置。
使用指南: PDF | HTML
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