JAJSEU4D December   2015  – December 2019 TPS4H160-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
      2.      可変電流制限による容量性負荷の駆動
  4. 4 改訂履歴
  5. 5 概要（続き）
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
    1.     Pin Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Switching Characteristics
    7. 8.7 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Pin Current and Voltage Conventions
      2. 9.3.2 Accurate Current Sense
      3. 9.3.3 Adjustable Current Limit
      4. 9.3.4 Inductive-Load Switching-Off Clamp
      5. 9.3.5 Fault Detection and Reporting
        1. 9.3.5.1 Diagnostic Enable Function
        2. 9.3.5.2 Multiplexing of Current Sense
        3. 9.3.5.3 Fault Table
        4. 9.3.5.4 STx and FAULT Reporting
      6. 9.3.6 Full Diagnostics
        1. 9.3.6.1 Short-to-GND and Overload Detection
        2. 9.3.6.2 Open-Load Detection
          1. 9.3.6.2.1 Channel On
          2. 9.3.6.2.2 Channel Off
        3. 9.3.6.3 Short-to-Battery Detection
        4. 9.3.6.4 Reverse Polarity Detection
        5. 9.3.6.5 Thermal Fault Detection
          1. 9.3.6.5.1 Thermal Shutdown
      7. 9.3.7 Full Protections
        1. 9.3.7.1 UVLO Protection
        2. 9.3.7.2 Loss-of-GND Protection
        3. 9.3.7.3 Protection for Loss of Power Supply
        4. 9.3.7.4 Reverse-Current Protection
        5. 9.3.7.5 MCU I/O Protection
    4. 9.4 Device Functional Modes
      1. 9.4.1 Working Modes
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Examples
      1. 12.2.1 Without a GND Network
      2. 12.2.2 With a GND Network
  13. 13デバイスおよびドキュメントのサポート
    1. 13.1 ドキュメントの更新通知を受け取る方法
    2. 13.2 コミュニティ・リソース
    3. 13.3 商標
    4. 13.4 静電気放電に関する注意事項
    5. 13.5 Glossary
  14. 14メカニカル、パッケージ、および注文情報

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

9.3.7.3 Protection for Loss of Power Supply

When loss of supply occurs, the output is shut down regardless of whether the INx pin is high or low. For a resistive or a capacitive load, loss of supply has no risk. But for a charged inductive load, the current is driven from all the I/O pinss to maintain the inductance current. To protect the system in this condition, TI recommends two types of external protections: the GND network or the external free-wheeling diode.

TPS4H160-Q1 loss-of-prot1_SLVSCV8.gifFigure 31. Protection for Loss of Power Supply, Method 1
TPS4H160-Q1 loss-of-prot2_SLVSCV8.gifFigure 32. Protection for Loss of Power Supply, Method 2