JAJSC31E February   2014  – May 2018 TPS92630-Q1

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      代表的なアプリケーションの回路図
  4. 4 改訂履歴
  5. 5 概要(続き)
  6. 6 Pin Configuration and Functions
    1.     Pin 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 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Constant LED-Current Setting
      2. 9.3.2 PWM Control
      3. 9.3.3 FAULT Diagnostics
      4. 9.3.4 Short-Circuit Detection
      5. 9.3.5 Open-Load Detection
      6. 9.3.6 Thermal Foldback
    4. 9.4 Device Functional Modes
      1. 9.4.1 Thermal Information
      2. 9.4.2 Operation With V(VIN) < 5 V (Minimum V(VIN))
      3. 9.4.3 Operation With 5 V < V(VIN) < 9 V (Lower-Than-Normal Automotive Battery Voltage)
  10. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 Stoplight and Taillight Application With PWM Generator
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Step-by-Step Design Procedure
            1. 10.2.1.2.1.1 R(REF)
            2. 10.2.1.2.1.2 Duty Cycle
            3. 10.2.1.2.1.3 Input and Output Capacitors
        3. 10.2.1.3 PWM Dimming Application Curve
      2. 10.2.2 Simple Stop-Light and Taillight Application
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
          1. 10.2.2.2.1 Step-by-Step Design Procedure
            1. 10.2.2.2.1.1 R(REF)
            2. 10.2.2.2.1.2 R(Stop)
            3. 10.2.2.2.1.3 Input and Output Capacitors
      3. 10.2.3 Parallel Connection
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
          1. 10.2.3.2.1 Step-by-Step Design Procedure
            1. 10.2.3.2.1.1 R(REF)
            2. 10.2.3.2.1.2 Input and Output Capacitors
      4. 10.2.4 Alternate Parallel Connection
        1. 10.2.4.1 Design Requirements
        2. 10.2.4.2 Detailed Design Procedure
          1. 10.2.4.2.1 Step-by-Step Design Procedure
            1. 10.2.4.2.1.1 R(REF)
            2. 10.2.4.2.1.2 Input and Output Capacitors
      5. 10.2.5 High-Side PWM Dimming
        1. 10.2.5.1 Design Requirements
        2. 10.2.5.2 Detailed Design Procedure
          1. 10.2.5.2.1 Step-by-Step Design Procedure
            1. 10.2.5.2.1.1 Ratio of Resistors, R1 / R2
            2. 10.2.5.2.1.2 R1 and R2 Selection
            3. 10.2.5.2.1.3 Input and Output Capacitors
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13デバイスおよびドキュメントのサポート
    1. 13.1 ドキュメントのサポート
      1. 13.1.1 関連資料
    2. 13.2 ドキュメントの更新通知を受け取る方法
    3. 13.3 コミュニティ・リソース
    4. 13.4 商標
    5. 13.5 静電気放電に関する注意事項
    6. 13.6 Glossary
  14. 14メカニカル、パッケージ、および注文情報

10.2.5.2.1.3 Input and Output Capacitors

TI recommends to add capacitors at VIN and IOUTx. TI recommends an input capacitor of at least 1 µF close to the VIN pin, and output capacitors of 10 nF close to the IOUTx pins. Larger capacitors are helpful for EMC and ESD; however, it takes a longer time to charge up the capacitor and could affect PWM dimming performance.