SLVS798G January   2008  – June 2024 TPS2062A , TPS2066A

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Typical Characteristics
  7. 6 Parameter Measurement Information
    1.     13
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Overcurrent
      1. 7.3.1 Overcurrent Conditions (TPS2062ADRB, TPS2066ADRB, and TPS2066AD)
      2. 7.3.2 Overcurrent Conditions (TPS2062AD)
    4. 7.4 OCx Response
    5. 7.5 Undervoltage Lockout (UVLO)
    6. 7.6 Enable ( ENx or ENx)
    7. 7.7 Thermal Sense
  9. 8 Application Information
    1. 8.1 Power-Supply Considerations
    2. 8.2 Input and Output Capacitance
    3. 8.3 Power Dissipation and Junction Temperature
    4. 8.4 Universal Serial Bus (USB) Applications
    5. 8.5 Self-powered and Bus-Powered Hubs
    6. 8.6 Low-Power Bus-Powered And High-Power Bus-Powered Functions
    7. 8.7 USB Power-Distribution Requirements
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.5 Self-powered and Bus-Powered Hubs

A SPH has a local power supply that powers embedded functions and downstream ports. This power supply must provide between 4.75 V to 5.25 V to downstream facing devices under full-load and no-load conditions. SPHs are required to have current-limit protection and must report overcurrent conditions to the USB controller. Typical SPHs are desktop PCs, monitors, printers, and stand-alone hubs.

A BPH obtains all power from an upstream port and often contains an embedded function. The hubs must power up with less than 100 mA. The BPH usually has one embedded function, and power is always available to the controller of the hub. If the embedded function and hub require more than 100 mA on power up, the power to the embedded function may need to be kept off until enumeration is completed. This is accomplished by removing power or by shutting off the clock to the embedded function. Power switching the embedded function is not necessary if the aggregate power draw for the function and controller is less than 100 mA. The total current drawn by the bus-powered device is the sum of the current to the controller, the embedded function, and the downstream ports, and it is limited to 500 mA from an upstream port.