JAJSCF6G July   2016  – December  2019 TPS2660

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
    1.     概略回路図
  3. 3 概要
    1.     -60V電源における入力逆極性保護
  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 Timing Requirements
    7. 8.7 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Undervoltage Lockout (UVLO)
      2. 10.3.2 Overvoltage Protection (OVP)
      3. 10.3.3 Reverse Input Supply Protection
      4. 10.3.4 Hot Plug-In and In-Rush Current Control
      5. 10.3.5 Overload and Short Circuit Protection
        1. 10.3.5.1 Overload Protection
          1. 10.3.5.1.1 Active Current Limiting
          2. 10.3.5.1.2 Electronic Circuit Breaker with Overload Timeout, MODE = OPEN
        2. 10.3.5.2 Short Circuit Protection
          1. 10.3.5.2.1 Start-Up With Short-Circuit On Output
        3. 10.3.5.3 FAULT Response
          1. 10.3.5.3.1 Look Ahead Overload Current Fault Indicator
        4. 10.3.5.4 Current Monitoring
        5. 10.3.5.5 IN, OUT, RTN, and GND Pins
        6. 10.3.5.6 Thermal Shutdown
        7. 10.3.5.7 Low Current Shutdown Control (SHDN)
    4. 10.4 Device Functional Modes
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Step by Step Design Procedure
        2. 11.2.2.2 Programming the Current-Limit Threshold—R(ILIM) Selection
        3. 11.2.2.3 Undervoltage Lockout and Overvoltage Set Point
        4. 11.2.2.4 Programming Current Monitoring Resistor—RIMON
        5. 11.2.2.5 Setting Output Voltage Ramp Time—(tdVdT)
          1. 11.2.2.5.1 Case 1: Start-Up Without Load—Only Output Capacitance C(OUT) Draws Current During Start-Up
          2. 11.2.2.5.2 Case 2: Start-Up With Load—Output Capacitance C(OUT) and Load Draws Current During Start-Up
          3. 11.2.2.5.3 Support Component Selections—RFLTb and C(IN)
      3. 11.2.3 Application Curves
    3. 11.3 System Examples
      1. 11.3.1 Acive ORing Operation
      2. 11.3.2 Field Supply Protection in PLC, DCS I/O Modules
      3. 11.3.3 Simple 24-V Power Supply Path Protection
    4. 11.4 Do's and Don'ts
  12. 12Power Supply Recommendations
    1. 12.1 Transient Protection
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14デバイスおよびドキュメントのサポート
    1. 14.1 デバイス・サポート
    2. 14.2 ドキュメントのサポート
      1. 14.2.1 関連資料
    3. 14.3 ドキュメントの更新通知を受け取る方法
    4. 14.4 コミュニティ・リソース
    5. 14.5 商標
    6. 14.6 静電気放電に関する注意事項
    7. 14.7 Glossary
  15. 15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

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • RHF|24
  • PWP|16
サーマルパッド・メカニカル・データ
発注情報

10.3.5.1.2 Electronic Circuit Breaker with Overload Timeout, MODE = OPEN

In this mode, during overload events, the device allows the overload current to flow through the device until I(LOAD) < I(FASTRIP). The circuit breaker threshold I(CB) can be programmed using the R(ILIM) resistor as shown in Equation 4.

Equation 4. TPS2660 equ_09_SLVSDG2.gif

where

  • I(CB) is circuit breaker current threshold in Ampere
  • R(ILIM) is the current limit resistor in kΩ

An internal timer starts when I(CB) < ILOAD < IFASTRIP, and when the timer exceeds tCB(dly), the device turns OFF the internal FET and FLT is asserted. Once the internal FET is turned off, the device configured in latch-off mode stays latched off, until it is reset by either of the following conditions:

  • Cycling V(IN) falling below V(PORF)
  • Toggling SHDN

whereas the device configured in auto-retry mode, commences an auto-retry cycle after 540 ms. The FLT signal remains asserted until the fault condition is removed and the device resumes normal operation. Figure 41 and Figure 42 illustrate behavior of the system during electronic circuit breaker with auto-retry functionality.

TPS2660 scope_shot_03_slvsdg2.png
MODE left floating Load Transition from 22 Ω to 12 Ω
RILIM = 8 kΩ
Figure 41. Circuit Breaker Functionality
TPS2660 scope_shot_04_slvsdg2.png
Load Transition from 22 Ω to 12 Ω , RILIM = 8 kΩ
Figure 42. Zoomed at the Instance of Load Step