SLVSDT4F October   2017  – December 2021 TPS2662

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and 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 Undervoltage Lockout (UVLO)
      2. 9.3.2 Overvoltage Protection (OVP)
      3. 9.3.3 Hot Plug-In and Inrush Current Control
      4. 9.3.4 Reverse Polarity Protection
        1. 9.3.4.1 Input Side Reverse Polarity Protection
        2. 9.3.4.2 Output Side Reverse Polarity Protection
      5. 9.3.5 Overload and Short-Circuit Protection
        1. 9.3.5.1 Overload Protection
        2.       28
        3. 9.3.5.2 Short-Circuit Protection
          1. 9.3.5.2.1 Start-Up With Short-Circuit On Output
      6. 9.3.6 Reverse Current Protection
      7. 9.3.7 FAULT Response
      8. 9.3.8 IN, OUT, RTN, and GND Pins
      9. 9.3.9 Thermal Shutdown
    4. 9.4 Device Functional Modes
      1. 9.4.1 Low Current Shutdown Control (SHDN)
  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
        1. 10.2.2.1 Step-by-Step Design Procedure
        2. 10.2.2.2 Programming the Current Limit Threshold R(ILIM) Selection
        3. 10.2.2.3 Undervoltage Lockout and Overvoltage Set Point
        4. 10.2.2.4 Setting Output Voltage Ramp Time—(tdVdT)
          1. 10.2.2.4.1 Case 1: Start-Up Without Load—Only Output Capacitance C(OUT) Draws Current During Start-Up
          2. 10.2.2.4.2 Case 2: Start-Up With Load —Output Capacitance C(OUT) and Load Draws Current During Start-Up
          3. 10.2.2.4.3 Support Component Selections – R FLT and C(IN)
      3. 10.2.3 Application Curves
    3. 10.3 System Examples
      1. 10.3.1 Field Supply Protection in PLC, DCS I/O Modules
      2. 10.3.2 Simple 24-V Power Supply Path Protection
      3. 10.3.3 Power Stealing in Smart Thermostat
    4. 10.4 Do's and Don'ts
  11. 11Power Supply Recommendations
    1. 11.1 Transient Protection
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Support Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.3.4.2 Output Side Reverse Polarity Protection

TheTPS26624 and TPS26625 eFuses feature fully integrated input as well as output reverse polarity protection. The internal FETs of the eFuse turn OFF during the output reverse polarity event and protects the upstream circuits from negative voltage that can appear at the output of the eFuse due to field miswiring at the output side with an external isolated power supplies. Figure 9-5 illustrates the performance during output side reverse polarity event with V(IN) un-powered and Figure 9-6 illustrates the performance with V(IN) powered. Figure 9-7 illustrates the output recovery performance after the reverse polarity is removed.

GUID-6C57AF82-F7A5-417F-BF53-A3DBAF407636-low.gifFigure 9-5 Reverse Output Polarity Protection With –60 V at OUT and VIN = 0 V
GUID-AE691038-8BF6-4345-BB23-670B707C9A8E-low.gifFigure 9-6 Reverse Output Polarity Protection With –24 V at OUT and 24 V at IN
GUID-C4D98D99-8DA4-4B34-BF10-35204726EF5E-low.gifFigure 9-7 Response During Coming Out of Output Reverse Polarity Fault Condition