ZHCSD89A October   2014  – January 2015 TPD3S014 , TPD3S044

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 简化电路原理图
  5. 5 修订历史记录
  6. 6 Device Comparison
  7. 7 Pin Configuration and Functions
  8. 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: TJ = TA = 25°C
    6. 8.6 Electrical Characteristics: -40°C ≤ TJ ≤ 125°C
    7. 8.7 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Undervoltage Lockout (UVLO)
      2. 9.3.2 Enable
      3. 9.3.3 Internal Charge Pump
      4. 9.3.4 Current Limit
      5. 9.3.5 Output Discharge
      6. 9.3.6 Input and Output Capacitance
      7. 9.3.7 Power Dissipation and Junction Temperature
    4. 9.4 Device Functional Modes
      1. 9.4.1 Operation with VIN < 4 V (Minimum VIN)
      2. 9.4.2 Operation With EN Control
      3. 9.4.3 Operation of Level 4 IEC61000-4-2 ESD Protection
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 USB2.0 Application
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curves
      2. 10.2.2 USB3.0 Application
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Examples
  13. 13器件和文档支持
    1. 13.1 相关链接
    2. 13.2 商标
    3. 13.3 静电放电警告
    4. 13.4 术语表
  14. 14机械封装和可订购信息

12 Layout

12.1 Layout Guidelines

  • The optimum placement is as close to the connector as possible.
    • EMI during an ESD event can couple from the trace being struck to other nearby unprotected traces, resulting in early system failures.
    • The PCB designer needs to minimize the possibility of EMI coupling by keeping any unprotected traces away from the protected traces which are between the TVS and the connector.
  • Route the protected traces as straight as possible.
  • Eliminate any sharp corners on the protected traces between the TVS and the connector by using rounded corners with the largest radii possible.
    • Electric fields tend to build up on corners, increasing EMI coupling.

12.2 Layout Examples

TPD3S014 TPD3S044 TPD3S0x4_Layout2.gifFigure 37. USB2.0 Type A TPD3S0x4 Board Layout
TPD3S014 TPD3S044 TPD3S0x4_USB3_Layout.gifFigure 38. USB3.0 Type A TPD3S044 Board Layout