SLVS849C July   2008  – September 2017 TPS65100-Q1

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 Main Boost Converter
      2. 7.3.2 VCOM Buffer
      3. 7.3.3 Positive Charge Pump
      4. 7.3.4 Negative Charge Pump
      5. 7.3.5 Linear Regulator Controller
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable and Power-ON Sequencing (EN, ENR)
      2. 7.4.2 Soft Start
      3. 7.4.3 Fault Protection
      4. 7.4.4 Thermal Shutdown
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Supply for a Typical Approximately 7-inch Display
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Boost Converter Design Procedure
            1. 8.2.1.2.1.1 Inductor Selection
            2. 8.2.1.2.1.2 Output Capacitor Selection
            3. 8.2.1.2.1.3 Input Capacitor Selection
            4. 8.2.1.2.1.4 Rectifier Diode Selection
            5. 8.2.1.2.1.5 Converter Loop Design and Stability
            6. 8.2.1.2.1.6 Design Procedure Quick Steps
            7. 8.2.1.2.1.7 Setting the Output Voltage and Selecting the Feedforward Capacitor
          2. 8.2.1.2.2 Negative Charge Pump
          3. 8.2.1.2.3 Positive Charge Pump
            1. 8.2.1.2.3.1 Voltage Doubler Mode
            2. 8.2.1.2.3.2 Voltage Tripler Mode
          4. 8.2.1.2.4 VCOM Buffer
          5. 8.2.1.2.5 Linear Regulator Controller
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Supply for a Typical Approximately 8-inch Display
  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
    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

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9 Power Supply Recommendations

Apply a supply voltage of 2.7 V to 5.8 V to the VIN pin. In case the 3.3-V linear regulator is supposed to be used, a higher minimum voltage needs to be applied, allowing for some drop-out. As in most cases, the 3.3-V rail needs to come up before the main boost-converter does, an RC-element on the EN pin can delay the ramp of the boost converter.