JAJSKH0C April   2023  – February 2024 TPS274C65

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
    1.     7
  7. 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 Switching Characteristics
    7. 6.7 SPI Timing Requirements
    8. 6.8 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Pin Diagrams
      2. 8.3.2 SPI Mode Operation
        1. 8.3.2.1 Diagnostic Bit Behavior
      3. 8.3.3 Programmable Current Limit
        1. 8.3.3.1 Inrush Current Handling
      4. 8.3.4 DO_EN Feature
      5. 8.3.5 Protection Mechanisms
        1. 8.3.5.1 Overcurrent Protection
        2. 8.3.5.2 Short Circuit Protection
          1. 8.3.5.2.1 VS During Short-to-Ground
        3. 8.3.5.3 Inductive-Load Switching-Off Clamp
        4. 8.3.5.4 Inductive Load Demagnetization
        5. 8.3.5.5 Thermal Shutdown
        6. 8.3.5.6 Undervoltage protection on VS
        7. 8.3.5.7 Undervoltage Lockout on Low Voltage Supply (VDD_UVLO)
        8. 8.3.5.8 Power-Up and Power-Down Behavior
        9. 8.3.5.9 Reverse Current Blocking
      6. 8.3.6 Diagnostic Mechanisms
        1. 8.3.6.1 Current Sense
          1. 8.3.6.1.1 RSNS Value
            1. 8.3.6.1.1.1 SNS Output Filter
        2. 8.3.6.2 Fault Indication
          1. 8.3.6.2.1 Current Limit Behavior
        3. 8.3.6.3 Short-to-Battery and Open-Load Detection
        4. 8.3.6.4 On-State Wire-Break Detection
        5. 8.3.6.5 Off State Wire-Break Detection
        6. 8.3.6.6 ADC
      7. 8.3.7 LED Driver
    4. 8.4 Device Functional Modes
      1. 8.4.1 OFF/POR
      2. 8.4.2 INIT
      3. 8.4.3 Active
    5. 8.5 TPS274C65BS Available Registers List
    6. 8.6 TPS274C65 Registers
  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 IEC 61000-4-5 Surge
        2. 9.2.2.2 Loss of GND
        3. 9.2.2.3 Paralleling Channels
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 ドキュメントの更新通知を受け取る方法
    2. 10.2 サポート・リソース
    3. 10.3 Trademarks
    4. 10.4 静電気放電に関する注意事項
    5. 10.5 用語集
  12. 11Revision History
  13. 12Mechanical, 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

9.2.2 Detailed Design Procedure

In an example application with maximum load current of 500 mA, the current limit must be set to an acceptable level. With the current limit variation and tolerance allowed for this specific application, the current limit setting of 1 A is chosen. Referring back to the Table 8-4, ILIM_REG[3:0] must be set to 0x8 through SPI.

Depending on the tolerance on the maximum current for the application, the current limit resistor can be chosen to leave the overhead needed before the current limit engages.