SLVSFH3C October   2021  – August 2026 TPS631000

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 ESD Rating
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics 
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Undervoltage Lockout (UVLO)
      2. 6.3.2 Enable and Soft Start
      3. 6.3.3 Adjustable Output Voltage
      4. 6.3.4 Mode Selection (PFM/FPWM)
      5. 6.3.5 Reverse Current Operation
      6. 6.3.6 Protection Features
        1. 6.3.6.1 Input Overvoltage Protection
        2. 6.3.6.2 Output Overvoltage Protection
        3. 6.3.6.3 Short Circuit Protection
        4. 6.3.6.4 Thermal Shutdown
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 Inductor Selection
        3. 7.2.2.3 Output Capacitor Selection
        4. 7.2.2.4 Input Capacitor Selection
        5. 7.2.2.5 Setting the Output Voltage
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
      2. 8.1.2 Development Support
        1. 8.1.2.1 Custom Design With WEBENCH® Tools
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.5 Reverse Current Operation

The device can support reverse current operation (the current flows from VOUT pin to VIN pin). If the output feedback voltage on the FB pin is higher than the reference voltage, the converter regulation forces a current into the input capacitor. The reverse current operation is independent of the VIN voltage or VOUT voltage ratio, therefore it is possible on all device operation modes boost, buck, or buck-boost.