SLVSCQ8A December   2015  – April 2016 TPS54A20

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 Timing Requirements
    7. 6.7 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  Frequency Selection
      2. 7.3.2  External Clock Syncronization
      3. 7.3.3  Adjusting the Output Voltage
      4. 7.3.4  Soft Start
      5. 7.3.5  Startup into Pre-biased Outputs
      6. 7.3.6  Power Good (PGOOD)
      7. 7.3.7  Overcurrent Protection
      8. 7.3.8  Light Load Operation
      9. 7.3.9  Output Undervoltage/Overvoltage Protection
      10. 7.3.10 Input Undervoltage/Overvoltage Lockout
      11. 7.3.11 Enable and Adjusting Undervoltage Lockout
      12. 7.3.12 Series Capacitor Monitoring
        1. 7.3.12.1 Dropping Below 35% Threshold
        2. 7.3.12.2 Rising Above 65% Threshold
      13. 7.3.13 Thermal Shutdown
      14. 7.3.14 Phase A Power Stage
      15. 7.3.15 Phase B Power Stage
      16. 7.3.16 Internal Gate Drive Regulator
      17. 7.3.17 Voltage Feed Forward
      18. 7.3.18 Internal Oscillator
      19. 7.3.19 Pulse Frequency Detector
      20. 7.3.20 On-Time Generator
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Two-Phase Series Capacitor Buck Converter Topology
      2. 8.1.2 Converter Switch Configurations
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  Output Voltage
        2. 8.2.2.2  Switching Frequency
        3. 8.2.2.3  On-Time
        4. 8.2.2.4  Inductor Selection
        5. 8.2.2.5  Output Capacitor Selection
        6. 8.2.2.6  Input Capacitor Selection
        7. 8.2.2.7  Series Capacitor Selection
        8. 8.2.2.8  Soft-Start Time Selection
        9. 8.2.2.9  Bootstrap Capacitor Selection
        10. 8.2.2.10 Gate Drive Capacitor Selection
        11. 8.2.2.11 Under Voltage Lockout Set Point
        12. 8.2.2.12 Current Limit Selection
      3. 8.2.3 Application Curves
  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 Documentation Support
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RNJ|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

11 Device and Documentation Support

11.1 Documentation Support

Optimizing Transient Response of Internally Compensated DC-DC Converters, SLVA289.

Introduction to the Series Capacitor Buck Converter, SLVA750.

11.2 Community Resources

The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.

    TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers.
    Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support.

11.3 Trademarks

E2E is a trademark of Texas Instruments.

11.4 Electrostatic Discharge Caution

esds-image

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

11.5 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.