SLVS632J January   2006  – July 2022 TPS5430 , TPS5431

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 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    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  Oscillator Frequency
      2. 7.3.2  Voltage Reference
      3. 7.3.3  Enable (ENA) and Internal Slow Start
      4. 7.3.4  Undervoltage Lockout (UVLO)
      5. 7.3.5  Boost Capacitor (BOOT)
      6. 7.3.6  Output Feedback (VSENSE) and Internal Compensation
      7. 7.3.7  Voltage Feed-Forward
      8. 7.3.8  Pulse-Width-Modulation (PWM) Control
      9. 7.3.9  Overcurrent Limiting
      10. 7.3.10 Overvoltage Protection
      11. 7.3.11 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operation near Minimum Input Voltage
      2. 7.4.2 Operation with ENA control
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 12-V Input to 5.0-V Output
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Custom Design With WEBENCH® Tools
          2. 8.2.1.2.2 Switching Frequency
          3. 8.2.1.2.3 Input Capacitors
          4. 8.2.1.2.4 Output Filter Components
            1. 8.2.1.2.4.1 Inductor Selection
            2. 8.2.1.2.4.2 Capacitor Selection
          5. 8.2.1.2.5 Output Voltage Set-Point
          6. 8.2.1.2.6 BOOT Capacitor
          7. 8.2.1.2.7 Catch Diode
          8. 8.2.1.2.8 Advanced Information
            1. 8.2.1.2.8.1 Output Voltage Limitations
            2. 8.2.1.2.8.2 Internal Compensation Network
            3. 8.2.1.2.8.3 Thermal Calculations
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Wide Input Voltage Ranges with TPS5430
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Wide Input Voltage Ranges with TPS5431
          1. 8.2.2.3.1 Design Requirements
          2. 8.2.2.3.2 Detailed Design Procedure
      3. 8.2.3 Circuit Using Ceramic Output Filter Capacitors
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
          1. 8.2.3.2.1 Output Filter Component Selection
          2. 8.2.3.2.2 External Compensation Network
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
        1. 11.1.2.1 Custom Design With WEBENCH® Tools
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DDA|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Wide input voltage range:
    • TPS5430: 5.5 V to 36 V
    • TPS5431: 5.5 V to 23 V
  • Up to 3-A continuous (4-A peak) output current
  • High efficiency up to 95% enabled by 110-mΩ integrated MOSFET switch
  • Wide output voltage range: adjustable down to 1.22 V with 1.5% initial accuracy
  • Internal compensation minimizes external parts count
  • Fixed 500-kHz switching frequency for small filter size
  • Improved line regulation and transient response by input voltage feedforward
  • System protected by overcurrent limiting, overvoltage protection, and thermal shutdown
  • –40°C to 125°C operating junction temperature range
  • Available in small thermally enhanced 8-pin SO PowerPAD™ package
  • Create a custom design using the TPS5430 with the WEBENCH® Power Designer