ZHCSHG3B november   2017  – july 2020 TPS254900A-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
    1.     7
  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 Switching Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  FAULT Response
      2. 8.3.2  Cable Compensation
        1. 8.3.2.1 Design Procedure
      3. 8.3.3  D+ and D– Protection
      4. 8.3.4  VBUS OVP Protection
      5. 8.3.5  Output and D+ or D– Discharge
      6. 8.3.6  Port Power Management (PPM)
        1. 8.3.6.1 Benefits of PPM
        2. 8.3.6.2 PPM Details
        3. 8.3.6.3 Implementing PPM in a System With Two Charging Ports (CDP and SDP1)
      7. 8.3.7  Overcurrent Protection
      8. 8.3.8  Undervoltage Lockout
      9. 8.3.9  Thermal Sensing
      10. 8.3.10 Current-Limit Setting
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device Truth Table (TT)
      2. 8.4.2 USB BC1.2 Specification Overview
      3. 8.4.3 Standard Downstream Port (SDP) Mode — USB 2.0 and USB 3.0
      4. 8.4.4 Charging Downstream Port (CDP) Mode
      5. 8.4.5 Client Mode
      6. 8.4.6 High-Bandwidth Data-Line Switch
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Input Capacitance
        2. 9.2.2.2 Output Capacitance
        3. 9.2.2.3 BIAS Capacitance
        4. 9.2.2.4 Output and BIAS TVS
      3. 9.2.3 Application Curves
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Device Support
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 接收文档更新通知
    4. 12.4 支持资源
    5. 12.5 Trademarks
    6. 12.6 静电放电警告
    7. 12.7 术语表
  14. 13Mechanical, Packaging, and Orderable Information

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机械数据 (封装 | 引脚)
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散热焊盘机械数据 (封装 | 引脚)
订购信息

8.4.6 High-Bandwidth Data-Line Switch

The D+ and D– data lines pass through the device to enable monitoring and handshaking while supporting the charging operation. A wide-bandwidth signal switch allows data to pass through the device without corrupting signal integrity. The data-line switches are turned on in any of the CDP, SDP or client operating modes. The EN input must be at logic high for the data-line switches to be enabled.

Note:
  • While in CDP mode, the data switches are ON, even during CDP handshaking.
  • The data switches are only for the USB-2.0 differential pair. In the case of a USB-3.0 host, the super-speed differential pairs must be routed directly to the USB connector without passing through the TPS254900A-Q1 device.
  • Data switches are OFF during OUT (VBUS) discharge.
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