JAJSQ85C november   2011  – september 2020 TPS63060 , TPS63061

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
    1.     Pin Functions
  8. 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
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 Power Good
      2. 8.3.2 Soft-Start Function
      3. 8.3.3 Short-Circuit Protection
      4. 8.3.4 Overvoltage Protection
      5. 8.3.5 Undervoltage Lockout
      6. 8.3.6 Overtemperature Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Buck-Boost Operation
      2. 8.4.2 Control Loop
      3. 8.4.3 Power-Save Mode
      4. 8.4.4 Synchronization
      5. 8.4.5 Dynamic Voltage Positioning
      6. 8.4.6 Dynamic Current Limit
      7. 8.4.7 Device Enable
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Step One: Output Filter Design
        2. 9.2.2.2 Step Two: Inductor Selection
        3. 9.2.2.3 Step Three: Capacitor Selection
          1. 9.2.2.3.1 Input Capacitors
          2. 9.2.2.3.2 Output Capacitor
          3. 9.2.2.3.3 Bypass Capacitor
        4. 9.2.2.4 Step Four: Setting the Output Voltage
      3. 9.2.3 Application Curves
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
  14. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

8.4.1 Buck-Boost Operation

To regulate the output voltage at all possible input voltage conditions, the device automatically switches from buck operation to boost operation and back as required. It always uses one active switch, one rectifying switch, one switch permanently on, and one switch permanently off. Therefore, it operates as a step down converter (buck) when the input voltage is higher than the output voltage, and as a boost converter when the input voltage is lower than the output voltage. There is no mode of operation in which all 4 switches are permanently switching. Controlling the switches this way allows the converter to maintain high efficiency at the most important point of operation, when the input voltage is close to the output voltage. The RMS current through the switches and the inductor is kept at a minimum, to minimize switching and conduction losses.