SLVS514P April   2004  – August 2024 TPS2041B , TPS2042B , TPS2043B , TPS2044B , TPS2051B , TPS2052B , TPS2053B , TPS2054B

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 General Switch Catalog
  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 Typical Characteristics (All Devices Excluding TPS2051BDBV and TPS2052BD)
    7. 6.7 Typical Characteristics (TPS2051BDBV and TPS2052BD)
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1  Power Switch
      2. 8.3.2  Charge Pump
      3. 8.3.3  Driver
      4. 8.3.4  Enable ( ENx)
      5. 8.3.5  Enable (ENx)
      6. 8.3.6  Current Sense
      7. 8.3.7  Overcurrent
        1. 8.3.7.1 Overcurrent Conditions (TPS20x3BD, TPS20x4BD, and TPS20x2BDRB)
        2. 8.3.7.2 Overcurrent Conditions (TPS20x1B & TPS20x2B in D, DGN, and DBV packages)
      8. 8.3.8  Overcurrent ( OCx)
      9. 8.3.9  Thermal Sense
      10. 8.3.10 Undervoltage Lockout
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Universal Serial Bus (USB) Applications
    2. 9.2 Typical Application
      1. 9.2.1 Typical Application (TPS2042B)
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Power-Supply Considerations
          2. 9.2.1.2.2 OC Response
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Host and Self-Powered and Bus-Powered Hubs
        1. 9.2.2.1 Design Requirements
          1. 9.2.2.1.1 USB Power-Distribution Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Low-Power Bus-Powered and High-Power Bus-Powered Functions
        3. 9.2.2.3 Application Curves
      3. 9.2.3 Generic Hot-Plug Applications
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Curves
  11. 10Power Supply Recommendations
    1. 10.1 Undervoltage Lockout (UVLO)
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Power Dissipation
    4. 11.4 Thermal Protection
  13. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  14. 13Revision History
  15. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information
9.2.2.1.1 USB Power-Distribution Requirements

USB can be implemented in several ways, and, regardless of the type of USB device being developed, several power-distribution features must be implemented.

  • Hosts and self-powered hubs must:
    • Current-limit downstream ports
    • Report overcurrent conditions on USB VBUS
  • Bus-powered hubs must:
    • Enable/disable power to downstream ports
    • Power up at <100 mA
    • Limit inrush current (<44 Ω and 10 µF)
  • Functions must:
    • Limit inrush currents
    • Power up at <100 mA

The feature set of the TPS20xxB allows them to meet each of these requirements. The integrated current-limiting and overcurrent reporting is required by hosts and self-powered hubs. The logic-level enable and controlled rise times meet the need of both input and output ports on bus-powered hubs, as well as the input ports for bus-powered functions (see Figure 9-13 through Figure 9-16).

TPS2041B TPS2042B TPS2043B TPS2044B TPS2051B TPS2052B TPS2053B TPS2054B Hybrid Self and Bus-Powered Hub Implementation, TPS2041B and TPS2051BFigure 9-13 Hybrid Self and Bus-Powered Hub Implementation, TPS2041B and TPS2051B
TPS2041B TPS2042B TPS2043B TPS2044B TPS2051B TPS2052B TPS2053B TPS2054B Hybrid Self and Bus-Powered Hub Implementation, TPS2042B and TPS2052BFigure 9-14 Hybrid Self and Bus-Powered Hub Implementation, TPS2042B and TPS2052B
TPS2041B TPS2042B TPS2043B TPS2044B TPS2051B TPS2052B TPS2053B TPS2054B Hybrid Self and Bus-Powered Hub Implementation, TPS2043B and TPS2053BFigure 9-15 Hybrid Self and Bus-Powered Hub Implementation, TPS2043B and TPS2053B
TPS2041B TPS2042B TPS2043B TPS2044B TPS2051B TPS2052B TPS2053B TPS2054B Hybrid Self and Bus-Powered Hub Implementation, TPS2044B and TPS2054BFigure 9-16 Hybrid Self and Bus-Powered Hub Implementation, TPS2044B and TPS2054B