JAJSOA3B February   2023  – June 2024 TPS25948

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Undervoltage Lockout (UVLO and UVP)
      2. 7.3.2 Overvoltage Lockout (OVLO)
      3. 7.3.3 Inrush Current, Overcurrent, and Short Circuit Protection
        1. 7.3.3.1 Slew Rate (dVdt) and Inrush Current Control
        2. 7.3.3.2 Active Current Limiting
        3. 7.3.3.3 Short-Circuit Protection
      4. 7.3.4 Analog Load Current Monitor
      5. 7.3.5 Reverse Current Protection
      6. 7.3.6 Overtemperature Protection (OTP)
      7. 7.3.7 Fault Response and Indication (FLT)
      8. 7.3.8 Supply Good Indication (SPLYGD/SPLYGD)
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Single Device, Self-Controlled
    3. 8.3 Typical Application
      1. 8.3.1 Design Requirements
      2. 8.3.2 Detailed Design Procedure
        1. 8.3.2.1 Setting Overvoltage Threshold
        2. 8.3.2.2 Setting Output Voltage Rise Time (tR)
        3. 8.3.2.3 Setting Overcurrent Threshold (ILIM)
        4. 8.3.2.4 Setting Overcurrent Blanking Interval (tITIMER)
      3. 8.3.3 Application Curves
    4. 8.4 Active ORing
    5. 8.5 Priority Power MUXing
    6. 8.6 Parallel Operation
    7. 8.7 USB PD Port Protection
    8. 8.8 Power Supply Recommendations
      1. 8.8.1 Transient Protection
      2. 8.8.2 Output Short-Circuit Measurements
    9. 8.9 Layout
      1. 8.9.1 Layout Guidelines
      2. 8.9.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 ドキュメントの更新通知を受け取る方法
    3. 9.3 サポート・リソース
    4. 9.4 Trademarks
    5. 9.5 静電気放電に関する注意事項
    6. 9.6 用語集
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.7 USB PD Port Protection

End equipments like PC, Notebooks, Docking Stations, Monitors etc.. have USB PD ports which can be configured as DFP (Source), UFP (Sink) or DRP (Source+Sink). TPS25948xx can be used to as a fully integrated power path solution for USB PD ports as shown in Figure 8-22 below.

TPS25948xx provides all the basic protection functions needed on the USB power path e.g. overvoltage, overcurrent and short-circuit protection along with monitoring and control. The linear ORing mechanism in TPS25948xx ensures that there's no reverse current flowing from one power source to the other during fast or slow ramp of either supply.

TPS25948 USB PD Port ProtectionFigure 8-22 USB PD Port Protection