SLUS984C November   2009  – April 2018 TPS51200-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Standard DDR Application
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Switching Characteristics
    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 Sink and Source Regulator (VO Pin)
      2. 7.3.2 Reference Input (REFIN Pin)
      3. 7.3.3 Reference Output (REFOUT Pin)
      4. 7.3.4 Soft-Start Sequencing
      5. 7.3.5 Enable Control (EN Pin)
      6. 7.3.6 Powergood Function (PGOOD Pin)
      7. 7.3.7 Current Protection (VO Pin)
      8. 7.3.8 UVLO Protection (VIN Pin)
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 S3 and Pseudo-S5 Support
      2. 7.4.2 Tracking Startup and Shutdown
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 VTT DIMM Applications
        1. 8.2.1.1 Design Parameters
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 VIN Capacitor
          2. 8.2.1.2.2 VLDO Input Capacitor
          3. 8.2.1.2.3 Output Capacitor
          4. 8.2.1.2.4 Output Tolerance Consideration for VTT DIMM Applications
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Design Example 1
        1. 8.2.2.1 Design Parameters
      3. 8.2.3 Design Example 2
        1. 8.2.3.1 Design Parameters
      4. 8.2.4 Design Example 3
        1. 8.2.4.1 Design Parameters
      5. 8.2.5 Design Example 4
        1. 8.2.5.1 Design Parameters
      6. 8.2.6 Design Example 5
        1. 8.2.6.1 Design Parameters
      7. 8.2.7 Design Example 6
        1. 8.2.7.1 Design Parameters
      8. 8.2.8 Design Example 7
        1. 8.2.8.1 Design Parameters
  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 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resource
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

10.1 Layout Guidelines

Consider the following points before starting the TPS51200-Q1 layout design.

  • Place the input capacitors as close to VDLOIN pin as possible with short and wide connection.
  • Place the output capacitor as close to VO pin as possible with short and wide connection. Place a ceramic capacitor with a value of at least 10-µF as close to VO pin if the rest of output capacitors need to be placed on the load side.
  • Connect the VOSNS pin to the positive node of output capacitors as a separate trace. In DDR VTT application, connect the VO sense trace to DIMM side to ensure the VTT voltage at DIMM side is well regulated.
  • Consider adding low-pass filter at VOSNS if the VO sense trace is very long.
  • Connect the GND pin and PGND pin to the thermal pad directly.
  • The device uses its thermal pad to dissipate heat. In order to effectively remove heat from device package, place numerous ground vias on the thermal pad. Use large ground copper plane, especially the copper plane on surface layer, to pour over those vias on thermal pad.
  • Consult the TPS51200EVM User's Guide (SLUU323) for detailed layout recommendations.