SLVSEI3C October   2018  – May 2020 TPS25982

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Simplified Schematics
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin 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 Switching Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Undervoltage Protection (UVLO and UVP)
      2. 8.3.2 Overvoltage Protection (OVP)
      3. 8.3.3 Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 8.3.3.1 Slew Rate and Inrush Current Control (dVdt)
        2. 8.3.3.2 Circuit Breaker
        3. 8.3.3.3 Active Current Limiting
        4. 8.3.3.4 Short-Circuit Protection
      4. 8.3.4 Overtemperature Protection (OTP)
      5. 8.3.5 Analog Load Current Monitor (IMON)
      6. 8.3.6 Power Good (PG)
      7. 8.3.7 Load Detect/Handshake (LDSTRT)
    4. 8.4 Fault Response
    5. 8.5 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application: Standby Power Rail Protection in Datacenter Servers
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Device Selection
        2. 9.2.2.2 Setting the Current Limit Threshold: RILIM Selection
        3. 9.2.2.3 Setting the Undervoltage Lockout Set Point
        4. 9.2.2.4 Choosing the Current Monitoring Resistor: RIMON
        5. 9.2.2.5 Setting the Output Voltage Ramp Time (TdVdt)
          1. 9.2.2.5.1 Case 1: Start-Up Without Load: Only Output Capacitance COUT Draws Current
          2. 9.2.2.5.2 Case 2: Start-Up With Load: Output Capacitance COUT and Load Draw Current
        6. 9.2.2.6 Setting the Load Handshake (LDSTRT) Delay
        7. 9.2.2.7 Setting the Transient Overcurrent Blanking Interval (tITIMER)
        8. 9.2.2.8 Setting the Auto-Retry Delay and Number of Retries
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 Optical Module Power Rail Path Protection
        1. 9.3.1.1 Design Requirements
        2. 9.3.1.2 Device Selection
        3. 9.3.1.3 External Component Settings
        4. 9.3.1.4 Voltage Drop
        5. 9.3.1.5 Application Curves
      2. 9.3.2 Input Protection for 12-V Rail Applications: PCIe Cards, Storage Interfaces and DC Fans
  10. 10Power Supply Recommendations
    1. 10.1 Transient Protection
    2. 10.2 Output Short-Circuit Measurements
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
        1. 12.1.1.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.3 Application Curves

TPS25982 HOTPLUG-NO-RLOAD-Apps.png
A.
COUT = 1.4 mF CdVdt = 10 nF RL(SU) = Open
Figure 54. Hot-Plug Start-Up Without Load on Output - dVdt Limited
TPS25982 OVERLOAD-server-Apps.png
A.
RILIM = 100 Ω CITIMER = 4.7 nF
Figure 56. Circuit Breaker With Transient Overcurrent Blanking Interval of 2 ms
TPS25982 SHORTCIRCUIT-server-Apps.png
1.
RILIM = 100 Ω
Figure 58. Output Hard Short-Circuit While ON
TPS25982 PowerintoSHORT-server-Apps.png
A.
Figure 60. Power-Up With Short-Circuit on Output
TPS25982 Handshake-success-Apps.png
A.
CLDSTRT = 0.1 μF
Figure 62. Successful Load Handshake (LDSTRT)
TPS25982 HOTPLUG-RLOAD-Apps.png
A.
COUT = 1.4 mF CdVdt = 10 nF RL(SU) = 10 Ω
Figure 55. Hot-Plug Start-Up With Load on Output - dVdt Limited
TPS25982 OVERLOAD-zoom-server-Apps.png
A.
RILIM = 100 Ω CITIMER = 4.7 nF CRETRY_DLY = 2.2 nF,
CNRETRY = 2.2 nF
Figure 57. Circuit Breaker - Auto-Retry 4 Times With Retry Delay of 100 ms
TPS25982 SHORTCIRCUIT-zoom-server-Apps.png
1.
RILIM = 100 Ω
Figure 59. Output Hard Short-Circuit While ON (Zoomed In)
TPS25982 PowerintoSHORT-zoom-server-Apps.png
1.
Figure 61. Power-Up With Short-Circuit on Output - Auto-Retry 4 Times With Retry Delay of 100 ms
TPS25982 Handshake-unsuccess-Apps.png
A.
CLDSTRT = 0.1 μF
Figure 63. Unsuccessful Load Handshake (LDSTRT)