SLVS416C February   2002  – January  2015

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Recommended Operating Conditions
    3. 6.3 Thermal Information
    4. 6.4 Dissipation Ratings
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Undervoltage Lock Out (UVLO)
      2. 7.3.2  Slow-Start/Enable (SS/ENA)
      3. 7.3.3  VBIAS Regulator (VBIAS)
      4. 7.3.4  Voltage Reference
      5. 7.3.5  Oscillator and PWM Ramp
      6. 7.3.6  Error Amplifier
      7. 7.3.7  PWM Control
      8. 7.3.8  Dead-Time Control and MOSFET Drivers
      9. 7.3.9  Overcurrent Protection
      10. 7.3.10 Thermal Shutdown
      11. 7.3.11 Powergood (PWRGD)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous Conduction Mode
      2. 7.4.2 Switching Frequency Selection/Synchronization
  8. 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
        1. 8.2.2.1 Component Selection
        2. 8.2.2.2 Input Voltage
        3. 8.2.2.3 Feedback Circuit
        4. 8.2.2.4 Operating Frequency
        5. 8.2.2.5 Output Filter
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
        1. 11.1.1.1 Related DC - DC Products
    2. 11.2 Related Links
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

9 Power Supply Recommendations

The TPS5431x devices are designed to operate from an input supply from 3 V to 6 V on the VIN pins. This supply must be well regulated and properly bypassed for proper operation of the TPS5431x converter. Additionally, the VBIAS pin must have good local bypassing for noise performance. See the recommendations in Layout and Pin Configuration and Functions for more information.