ZHCSMS4B November   2020  – September 2021 TPS25864-Q1 , TPS25865-Q1

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. 说明(续)
  6. Device Comparison Table
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Timing Requirements
    7. 8.7 Switching Characteristics
    8. 8.8 Typical Characteristics
  9. Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1  Power-Down or Undervoltage Lockout
      2. 10.3.2  Input Overvoltage Protection (OVP) - Continuously Monitored
      3. 10.3.3  Buck Converter
      4. 10.3.4  FREQ/SYNC
      5. 10.3.5  Bootstrap Voltage (BOOT)
      6. 10.3.6  Minimum ON-Time, Minimum OFF-Time
      7. 10.3.7  Internal Compensation
      8. 10.3.8  Selectable Output Voltage (VSET)
      9. 10.3.9  Current Limit and Short Circuit Protection
        1. 10.3.9.1 USB Switch Current Limit
        2. 10.3.9.2 Interlocking for Two-Level USB Switch Current Limit
        3. 10.3.9.3 Cycle-by-Cycle Buck Current Limit
        4. 10.3.9.4 OUT Current Limit
      10. 10.3.10 Cable Compensation
      11. 10.3.11 Thermal Management With Temperature Sensing (TS) and OTSD
      12. 10.3.12 Thermal Shutdown
      13. 10.3.13 USB Specification Overview
      14. 10.3.14 USB Port Operating Modes
        1. 10.3.14.1 Dedicated Charging Port (DCP) Mode
          1. 10.3.14.1.1 DCP BC1.2 and YD/T 1591-2009
          2. 10.3.14.1.2 DCP Divider-Charging Scheme
          3. 10.3.14.1.3 DCP 1.2-V Charging Scheme
        2. 10.3.14.2 DCP Auto Mode
    4. 10.4 Device Functional Modes
      1. 10.4.1 Shutdown Mode
      2. 10.4.2 Active Mode
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Applications
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Output Voltage Setting
        2. 11.2.2.2 Switching Frequency
        3. 11.2.2.3 Inductor Selection
        4. 11.2.2.4 Output Capacitor Selection
        5. 11.2.2.5 Input Capacitor Selection
        6. 11.2.2.6 Bootstrap Capacitor Selection
        7. 11.2.2.7 Undervoltage Lockout Set-Point
        8. 11.2.2.8 Cable Compensation Set-Point
      3. 11.2.3 Application Curves
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
    3. 13.3 Ground Plane and Thermal Considerations
  14. 14Device and Documentation Support
    1. 14.1 接收文档更新通知
    2. 14.2 支持资源
    3. 14.3 Trademarks
    4. 14.4 Electrostatic Discharge Caution
    5. 14.5 术语表
  15. 15Mechanical, Packaging, and Orderable Information

特性

  • 符合面向汽车应用的 AEC-Q100 标准:
    • 温度等级 1:TA 范围 –40°C 至 +125°C
    • HBM ESD 分类等级 H2
    • CDM ESD 分类等级 C5
  • 针对超低 EMI 要求进行了优化
    • 符合 CISPR25 5 类标准
    • HotRod™ 封装可更大限度地减少开关节点振铃
    • 展频可降低峰值发射
  • 同步降压稳压器
    • 400kHz 下的高效率:VIN = 13.5V、IPA_BUS = 2.4A 且 IPB_BUS = 2.4A 时效率为 95.2%
    • 18mΩ/10mΩ 低 RDS(ON) 降压稳压器 MOSFET
    • 工作电压范围:5.5V 至 26V,可承受 36V 输入
    • 频率可调节:200kHz 至 800kHz (TPS25865-Q1)
    • 频率可调节:200kHz 至 3MHz (TPS25864-Q1)
    • 具有展频频谱抖动的 FPWM
    • 可选输出电压:5.1V、5.17V、5.3V、5.4V
  • 内部电源路径:
    • 7mΩ/7mΩ 低 RDS(ON) 内部 USB 功率 MOSFET
    • 具有高精度的 USB 端口的电流限制: 2.73A 下为 ±10%
    • OUT:用于辅助负载的 5.1V、200mA 电源
  • 线路压降补偿:2.4A 负载下为 90mV
  • 符合 USB-IF 标准
    • 自动 DCP 模式:
      • 符合 BC1.2 和 YD/T 1591 2009 要求的短路模式
      • 1.2V 模式
      • 2.7V 分压器 3 模式
  • 甩负荷和可编程 TA
  • 器件 TJ 范围:–40°C 至 +150°C