SLVSD88L July   2016  – August 2021 TPS61099

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Boost Controller Operation
      2. 8.3.2 Under-Voltage Lockout
      3. 8.3.3 Enable and Disable
      4. 8.3.4 Soft Start
      5. 8.3.5 Current Limit Operation
      6. 8.3.6 Output Short-to-Ground Protection
      7. 8.3.7 Over Voltage Protection
      8. 8.3.8 Down Mode Regulation and Pass-Through Operation
      9. 8.3.9 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Burst Mode Operation under Light Load Condition
      2. 8.4.2 Down Mode Regulation and Pass-Through Mode Operation
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application - 5 V Output Boost Converter
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Detailed Design Procedure
          1. 9.2.1.1.1 Custom Design With WEBENCH® Tools
          2. 9.2.1.1.2 Programming the Output Voltage
          3. 9.2.1.1.3 Maximum Output Current
          4. 9.2.1.1.4 Inductor Selection
          5. 9.2.1.1.5 Capacitor Selection
        2. 9.2.1.2 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 Custom Design With WEBENCH® Tools
      2. 12.1.2 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information
9.2.1.1.3 Maximum Output Current

The maximum output capability of the TPS61099x is determined by the input to output ratio and the current limit of the boost converter. It can be estimated by Equation 2.

Equation 2. GUID-9DA24D8C-1B20-4F9D-B942-9A3642163E7A-low.gif

where

  • η is the conversion efficiency, use 85% for estimation
  • ILH is the current ripple value
  • ILIM is the switch current limit

Minimum input voltage, maximum boost output voltage and minimum current limit ILIM should be used as the worst case condition for the estimation.