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  • 适用于 1 芯锂离子电池组的BQ27Z561-R2 Impedance Track™ 电池电量监测计解决方案

    • ZHCSKS9B February   2020  – November 2022 BQ27Z561-R2

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  • 适用于 1 芯锂离子电池组的BQ27Z561-R2 Impedance Track™ 电池电量监测计解决方案
  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 说明(续)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Supply Current
    6. 7.6  Internal 1.8-V LDO (REG18)
    7. 7.7  I/O (PULS, INT)
    8. 7.8  Chip Enable (CE)
    9. 7.9  Internal Temperature Sensor
    10. 7.10 NTC Thermistor Measurement Support
    11. 7.11 Coulomb Counter (CC)
    12. 7.12 Analog Digital Converter (ADC)
    13. 7.13 Internal Oscillator Specifications
    14. 7.14 Voltage Reference1 (REF1)
    15. 7.15 Voltage Reference2 (REF2)
    16. 7.16 Flash Memory
    17. 7.17 I2C I/O
    18. 7.18 I2C Timing — 100 kHz
    19. 7.19 I2C Timing — 400 kHz
    20. 7.20 HDQ Timing
    21. 7.21 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  BQ27Z561-R2 Processor
      2. 8.3.2  Battery Parameter Measurements
        1. 8.3.2.1 Coulomb Counter (CC)
        2. 8.3.2.2 CC Digital Filter
        3. 8.3.2.3 ADC Multiplexer
        4. 8.3.2.4 Analog-to-Digital Converter (ADC)
        5. 8.3.2.5 Internal Temperature Sensor
        6. 8.3.2.6 External Temperature Sensor Support
      3. 8.3.3  Power Supply Control
      4. 8.3.4  Bus Communication Interface
      5. 8.3.5  Low Frequency Oscillator
      6. 8.3.6  High Frequency Oscillator
      7. 8.3.7  1.8-V Low Dropout Regulator
      8. 8.3.8  Internal Voltage References
      9. 8.3.9  Gas Gauging
      10. 8.3.10 Charge Control Features
      11. 8.3.11 Authentication
    4. 8.4 Device Functional Modes
      1. 8.4.1 Lifetime Logging Features
      2. 8.4.2 Configuration
        1. 8.4.2.1 Coulomb Counting
        2. 8.4.2.2 Cell Voltage Measurements
        3. 8.4.2.3 Auto Calibration
        4. 8.4.2.4 Temperature Measurements
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design Requirements (Default)
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Changing Design Parameters
      3. 9.2.3 Calibration Process
      4. 9.2.4 Gauging Data Updates
        1. 9.2.4.1 Application Curve
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 第三方产品免责声明
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 支持资源
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 术语表
  11. 11Mechanical, Packaging, and Orderable Information
  12. 重要声明
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DATA SHEET

适用于 1 芯锂离子电池组的BQ27Z561-R2 Impedance Track™ 电池电量监测计解决方案

本资源的原文使用英文撰写。 为方便起见,TI 提供了译文;由于翻译过程中可能使用了自动化工具,TI 不保证译文的准确性。 为确认准确性,请务必访问 ti.com 参考最新的英文版本(控制文档)。

1 特性

  • 支持低至 1mΩ 的高侧和低侧电流检测电阻
  • 支持电池组侧监测,包括增强型健康状况 (SOH) 算法
  • 基于预测的 OCV 的快速 QMax 更新选项
  • SHA-256 认证响应器,用于提高电池组安全性
  • 精密的充电算法
    • JEITA
    • 增强型充电
    • RSOC() 充电补偿选项
  • 两个独立的 ADC
    • 支持电流和电压同步采样
    • 高精度库伦计数器,输入失调电压误差 < 1µV(典型值)
  • 低电压 (2V) 运行
  • 宽量程电流应用(1mA 至 5A)
  • 高电平有效或者低脉冲或电平中断引脚
  • 支持电池跳闸点 (BTP)
  • 节能模式(典型电池组运行范围条件)
    • 典型睡眠模式:< 11μA
    • 典型深度睡眠模式:< 9μA
    • 典型休眠模式:< 3μA
    • 典型关断模式:< 1.9μA
  • 内部和外部温度检测功能
  • 诊断使用寿命数据监控器和黑盒记录器
  • 适用于高速编程和数据访问的 400kHz I2C 总线通信接口
  • 用于主机通信的单线制 HDQ
  • 紧凑型 12 引脚 DSBGA 封装 (YPH)

2 应用

  • 智能手机
  • 数码相机和视频摄像机
  • 平板电脑计算
  • 便携式和可佩戴式健康设备
  • 便携式音频设备

3 说明

德州仪器 (TI) BQ27Z561-R2 Impedance Track™ 电量监测计解决方案是一个高度集成的高精度单芯电池电量监测计,具有闪存可编程的定制精简指令集 CPU (RISC) 和锂离子和锂聚合物电池组 SHA-256 认证。单节电池包括并联电芯,可提高容量。

BQ27Z561-R2 电量监测计通过 I2C 兼容接口和 HDQ 单线接口进行通信,并具有几个可帮助简化准确电量监测的关键功能。通过集成的温度检测功能(内部和外部选项),可实现系统和电池温度测量。

器件信息
器件型号(1) 封装 封装尺寸(标称值)
BQ27Z561 DSBGA (12) 1.67mm × 2.05mm
BQ27Z561-R2
(1) 如需了解所有可用封装,请参阅数据表末尾的可订购产品附录。
GUID-4B01537B-79FE-4BAA-90DD-4BEE6CD2286C-low.gif简化原理图

4 Revision History

Changes from Revision A (November 2021) to Revision B (November 2022)

  • Removed the CE reference in this section; added a new, separate section for CE.Go
  • Added the Chip Enable (CE) section for the CE pin thresholds that are assured by designGo

Changes from Revision * (February 2020) to Revision A (November 2021)

  • 更改了器件信息中的封装尺寸Go

5 说明(续)

集成的 SHA-256 功能有助于在系统和电池组之间实现安全识别。借助中断和 BTP 功能,BQ27Z561-R2 器件可在发生特定充电状态 (SOC)、电压或温度故障时通知系统。通过低电压运行,即使在深度放电情况下,系统也能够持续监控电池的状态。在低活跃度情况下,可以将此器件设置为低功耗库伦计数 (CC) 模式,从而在显著减小工作电流的情况下继续进行库伦计数。

6 Pin Configuration and Functions

Figure 6-1 Pin Diagram
Table 6-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME NO.
BAT D2 P Battery voltage measurement input. Kelvin battery sense connection to BAT_SNS. Connect a capacitor (1 µF) between BAT and VSS. Place the capacitor close to the gauge.
CE D3 I Active-high chip enable
BAT_SNS C2 AI Battery sense
INT A1 O Interrupt for voltage, temperature, and state of charge (programmable active high or low)
PULS A2 O Programmable pulse width with active-high or -low option
TS B1 AI Temperature input for ADC
NU C3 NC Makes no external connection
SCL B3 I/O Serial clock for I2C interface that requires an external pullup when used. It can be left floating if unused.
SDA/HDQ A3 I/O Serial data for I2C interface and one-wire interface for HDQ (selectable) that requires an external pullup when used. It can be left floating if unused.
SRP D1 I Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP (positive side) and SRN
SRN C1 I Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP (positive side) and SRN
VSS B2 P Device ground
(1) P = Power Connection, O = Digital Output, AI = Analog Input, I = Digital Input, I/O = Digital Input/Output, NU = Not Used

 

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