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BQ79731B-Q1

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具有垂直接口的汽车级 6 节串联电池接线盒电流检测 UIR 传感器

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BQ79731B-Q1

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产品详情

Rating Automotive Operating temperature range (°C) to TI functional safety category Functional Safety-Compliant
Rating Automotive Operating temperature range (°C) to TI functional safety category Functional Safety-Compliant
HTQFP (PHP) 48 81 mm² 9 x 9
  • AEC-Q100 qualified –40°C to +125°C
  • Functional safety compliant
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • 17 single-ended voltage channels
    • High voltage pack, link, charge measurement accuracy update to 0.2%
    • Pack and cell VI sync to 64µS
  • 2 independent current sense ADCs
    • ±0.15% gain error drift
    • Input range = ±275mV
  • 2 Over current detect comparators
    • ±1% accuracy
    • Selectable bi-directional thresholds
    • Programmable OC
  • Integrated Coulomb counting
  • 15 GPIO inputs as IO, I2C, SPI, ADC and temp sense
  • Dedicated MOSFET switch drive pins
  • Intelligent SPI contoller HUB
    • Support multiple SPI peripheral devices
    • HW pin to trigger contactor drivers and Pyro Fuse drivers
  • Stackable and register map compatible with BQ7971x-Q1 cell monitors
  • AEC-Q100 qualified –40°C to +125°C
  • Functional safety compliant
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • 17 single-ended voltage channels
    • High voltage pack, link, charge measurement accuracy update to 0.2%
    • Pack and cell VI sync to 64µS
  • 2 independent current sense ADCs
    • ±0.15% gain error drift
    • Input range = ±275mV
  • 2 Over current detect comparators
    • ±1% accuracy
    • Selectable bi-directional thresholds
    • Programmable OC
  • Integrated Coulomb counting
  • 15 GPIO inputs as IO, I2C, SPI, ADC and temp sense
  • Dedicated MOSFET switch drive pins
  • Intelligent SPI contoller HUB
    • Support multiple SPI peripheral devices
    • HW pin to trigger contactor drivers and Pyro Fuse drivers
  • Stackable and register map compatible with BQ7971x-Q1 cell monitors

BQ79731B-Q1 can be used to measure divided down high voltage nodes in a battery system. The device can measure voltage across Fuse, Contactors and check isolation voltage in a battery junction box (BJB) system. The device has two integrated current sense paths supporting low-side shunt resistor. Coulomb counting function is available for accurate SOC calculation. There are 15 GPIOs/auxiliary inputs that can be used for HV measurements, thermistor measurements, and driving relays. There are four SW outputs that can be used to drive MOSFET switches in the measurement path. The device can function as a SPI HUB and interface with up to eight separate SPI devices/groups. Over current protection response can be achieved autonomously using HW pins for fast protection in dangerous over current events. The isolated bi-directional daisy chain ports support both capacitor and transformer based isolation. The device can also communicate with MCU over SPI and UART.

BQ79731B-Q1 can be used to measure divided down high voltage nodes in a battery system. The device can measure voltage across Fuse, Contactors and check isolation voltage in a battery junction box (BJB) system. The device has two integrated current sense paths supporting low-side shunt resistor. Coulomb counting function is available for accurate SOC calculation. There are 15 GPIOs/auxiliary inputs that can be used for HV measurements, thermistor measurements, and driving relays. There are four SW outputs that can be used to drive MOSFET switches in the measurement path. The device can function as a SPI HUB and interface with up to eight separate SPI devices/groups. Over current protection response can be achieved autonomously using HW pins for fast protection in dangerous over current events. The isolated bi-directional daisy chain ports support both capacitor and transformer based isolation. The device can also communicate with MCU over SPI and UART.
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* 数据表 BQ79731B-Q1 Pack Voltage Current and Isolation Resistance Monitor for HV Automotive BMS Applications 数据表 PDF | HTML 2025年 12月 12日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

驱动程序或库

BQ79731B-Q1-DESIGN — BQ79731B-Q1 secure resources

BQ79731B-Q1 secure resources
支持的产品和硬件

支持的产品和硬件

产品
电池监测器和平衡器
BQ79731B-Q1 — 具有垂直接口的汽车级 6 节串联电池接线盒电流检测 UIR 传感器
发送申请
驱动程序或库

BQ79731B-Q1-FS — Functional Safety documentations of BQ79731B-Q1

Functional Safety documentations of BQ79731B-Q1
支持的产品和硬件

支持的产品和硬件

产品
电池监测器和平衡器
BQ79731B-Q1 — 具有垂直接口的汽车级 6 节串联电池接线盒电流检测 UIR 传感器
发送申请
驱动程序或库

BQ7973XB-Q1-DESIGN — Secure resource folder of BQ7973XB-Q1

Secure resource folder of BQ7973XB-Q1
支持的产品和硬件

支持的产品和硬件

产品
电池监测器和平衡器
BQ79731B-Q1 — 具有垂直接口的汽车级 6 节串联电池接线盒电流检测 UIR 传感器
发送申请
封装 引脚 CAD 符号、封装和 3D 模型
HTQFP (PHP) 48 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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