SLVSEI3D October   2018  – May 2026 TPS25982

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  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 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Undervoltage Protection (UVLO and UVP)
      2. 7.3.2 Overvoltage Protection (OVP)
      3. 7.3.3 Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 7.3.3.1 Slew Rate and Inrush Current Control (dVdt)
        2. 7.3.3.2 Circuit Breaker
        3. 7.3.3.3 Active Current Limiting
        4. 7.3.3.4 Short-Circuit Protection
      4. 7.3.4 Overtemperature Protection (OTP)
      5. 7.3.5 Analog Load Current Monitor (IMON)
      6. 7.3.6 Power Good (PG)
      7. 7.3.7 Load Detect/Handshake (LDSTRT)
    4. 7.4 Fault Response
    5. 7.5 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application: Standby Power Rail Protection in Datacenter Servers
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Device Selection
        2. 8.2.2.2 Setting the Current Limit Threshold: RILIM Selection
        3. 8.2.2.3 Setting the Undervoltage Lockout Set Point
        4. 8.2.2.4 Selecting the Current Monitoring Resistor: RIMON
        5. 8.2.2.5 Setting the Output Voltage Ramp Time (TdVdt)
          1. 8.2.2.5.1 Case 1: Start-Up Without Load: Only Output Capacitance COUT Draws Current
          2. 8.2.2.5.2 Case 2: Start-Up With Load: Output Capacitance COUT and Load Draw Current
        6. 8.2.2.6 Setting the Load Handshake (LDSTRT) Delay
        7. 8.2.2.7 Setting the Transient Overcurrent Blanking Interval (tITIMER)
        8. 8.2.2.8 Setting the Auto-Retry Delay and Number of Retries
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 Optical Module Power Rail Path Protection
        1. 8.3.1.1 Design Requirements
        2. 8.3.1.2 Device Selection
        3. 8.3.1.3 External Component Settings
        4. 8.3.1.4 Voltage Drop
        5. 8.3.1.5 Application Curves
      2. 8.3.2 Input Protection for 12V Rail Applications: PCIe Cards, Storage Interfaces and DC Fans
    4. 8.4 Power Supply Recommendations
      1. 8.4.1 Transient Protection
      2. 8.4.2 Output Short-Circuit Measurements
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.2.3 Application Curves

TPS25982 Hot-Plug Start-Up Without Load on Output - dVdt Limited
COUT = 1.4mF CdVdt = 10nF RL(SU) = Open
Figure 8-3 Hot-Plug Start-Up Without Load on Output - dVdt Limited
TPS25982 Circuit Breaker With Transient Overcurrent Blanking Interval of 2ms
RILIM = 100Ω CITIMER = 4.7nF
Figure 8-5 Circuit Breaker With Transient Overcurrent Blanking Interval of 2ms
TPS25982 Output Hard Short-Circuit While ON
RILIM = 100Ω
Figure 8-7 Output Hard Short-Circuit While ON
TPS25982 Power-Up With Short-Circuit on Output
Figure 8-9 Power-Up With Short-Circuit on Output
TPS25982 Successful Load Handshake (LDSTRT)
CLDSTRT = 0.1μF
Figure 8-11 Successful Load Handshake (LDSTRT)
TPS25982 Hot-Plug Start-Up With Load on Output - dVdt Limited
COUT = 1.4mF CdVdt = 10nF RL(SU) = 10Ω
Figure 8-4 Hot-Plug Start-Up With Load on Output - dVdt Limited
TPS25982 Circuit Breaker - Auto-Retry 4 Times With Retry Delay of 100ms
RILIM = 100Ω CITIMER = 4.7nF CRETRY_DLY = 2.2nF, CNRETRY = 2.2nF
Figure 8-6 Circuit Breaker - Auto-Retry 4 Times With Retry Delay of 100ms
TPS25982 Output Hard Short-Circuit While ON (Zoomed In)
RILIM = 100Ω
Figure 8-8 Output Hard Short-Circuit While ON (Zoomed In)
TPS25982 Power-Up With Short-Circuit on Output - Auto-Retry 4 Times With Retry Delay of 100ms
Figure 8-10 Power-Up With Short-Circuit on Output - Auto-Retry 4 Times With Retry Delay of 100ms
TPS25982 Unsuccessful Load Handshake (LDSTRT)
CLDSTRT = 0.1μF
Figure 8-12 Unsuccessful Load Handshake (LDSTRT)