SLVSHR9 December   2024 TPS25984B

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 Logic Interface
    7. 6.7 Timing Requirements
    8. 6.8 Switching Characteristics
    9. 6.9 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
      2. 7.3.2  Insertion Delay
      3. 7.3.3  Overvoltage Protection
      4. 7.3.4  Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 7.3.4.1 Slew Rate (dVdt) and Inrush Current Control
          1. 7.3.4.1.1 Start-Up Time Out
        2. 7.3.4.2 Steady-State Overcurrent Protection (Circuit-Breaker)
        3. 7.3.4.3 Active Current Limiting During Start-Up
        4. 7.3.4.4 Short-Circuit Protection
      5. 7.3.5  Analog Load Current Monitor (IMON)
      6. 7.3.6  Mode Selection (MODE)
      7. 7.3.7  Digital Overcurrent Indication (D_OC)
      8. 7.3.8  Stacking Multiple eFuses for Scalability
        1. 7.3.8.1 Current Balancing During Start-Up
      9. 7.3.9  Analog Junction Temperature Monitor (TEMP)
      10. 7.3.10 Overtemperature Protection
      11. 7.3.11 Fault Response and Indication (GOK/FLT)
      12. 7.3.12 Power-Good Indication (PG)
      13. 7.3.13 Output Discharge
      14. 7.3.14 FET Health Monitoring
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Single Device, Standalone Operation
      2. 8.1.2 Multiple Devices, Parallel Connection
      3. 8.1.3 Digital Telemetry Using External Microcontroller
    2. 8.2 Typical Application: 12V, 3.3kW Power Path Protection in Data Center Servers
      1. 8.2.1 Application
      2. 8.2.2 Design Requirements
      3. 8.2.3 Detailed Design Procedure
      4. 8.2.4 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Transient Protection
      2. 8.3.2 Output Short-Circuit Measurements
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 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

Package Options

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

1 Features

  • Input operating voltage range: 4.5V to 16V
    • Absolute maximum: 20V DC, 23.5V transient
    • Withstands negative voltages up to –1V output
  • Integrated FET, ultra-low RDSON: 0.8mΩ (typ)
  • Rated RMS current: 55A; peak current: 70A
  • Supports parallel connection of multiple eFuses for higher current support
    • Current balancing during start-up
  • Robust overcurrent protection
    • Adjustable overcurrent threshold (IOCP): 10A to 80A with accuracy of ±5%
    • Circuit-breaker response during steady-state operation with internal transient overcurrent blanking timer to support peak currents
    • Adjustable active current limit in start-up (ILIM)
  • Robust short-circuit protection
    • Fast-trip response (<200ns) to output short-circuit events
    • Adjustable (2 × IOCP) and fixed thresholds
    • Immune to supply line transients — no nuisance tripping
  • Precise analog load current monitoring
    • Accuracy: ±1.4%; bandwidth: >500kHz
  • Fast overvoltage protection (fixed 18.4V threshold)
  • Adjustable output slew rate control (dVdt) for inrush current protection
  • Active high enable input with adjustable undervoltage lockout (UVLO)
  • Overtemperature protection (OTP)
    • FET SOA: 10W√s
  • Integrated FET health monitoring and reporting
  • Analog die temperature monitor output (TEMP)
  • Dedicated fault indication pin (GOK/FLT)
  • Power-Good indication pin (PG)
  • Small footprint: QFN-32, 5mm × 5mm
  • 100% Pb free
TPS25984B Simplified Schematic Simplified Schematic