SLVSGZ5A march   2023  – august 2023 TPS2117

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  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 Switching Characteristics
    7. 6.7 Timing Diagrams
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
      1. 7.3.1 Priority and Manual Mode
        1. 7.3.1.1 Priority Switching
        2. 7.3.1.2 Manual Switching
      2. 7.3.2 Diode Mode
    4. 7.4 Feature Description
      1. 7.4.1 Truth Table
      2. 7.4.2 Soft Start
      3. 7.4.3 Status Indication
      4. 7.4.4 Reverse Current Blocking
    5. 7.5 VINx Collapse Rate
    6. 7.6 Fast Switchover Behavior
    7. 7.7 Output Voltage Drop
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.6 Fast Switchover Behavior

The TPS2117 transitions between a primary and secondary supply with a fast switchover time of tSW. After the secondary input is connected to the output, like tSW, the device heavily drives the channel of the secondary supply to ramp up the output voltage as fast as possible. This is performed to keep the driven load in a stable operating condition and to minimize the voltage dip. The duration of this channel boost is typically 11 µs. In the case of a heavy load, the output voltage may not reach the final value after 11 µs and in this case the device reverts back to the soft start output ramp rate. This behavior reduces the amount of time a large pulse of current can flow through the enabled channel and into the load.