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  • TPS16890 9V–80V, 3.65mΩ, 20A Stackable Integrated Hotswap (eFuse) With PMBus Digital Telemetry

    • SLVSHO1 March   2025 TPS1689

      ADVANCE INFORMATION  

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  • TPS16890 9V–80V, 3.65mΩ, 20A Stackable Integrated Hotswap (eFuse) With PMBus Digital Telemetry
  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics
    6. 5.6  PMBus and GPIO DC Characteristics
    7. 5.7  Telemetry
    8. 5.8  Logic Interface
    9. 5.9  Timing Requirements
    10. 5.10 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Undervoltage Protection
      2. 6.3.2  Insertion Delay
      3. 6.3.3  Overvoltage Protection
      4. 6.3.4  Inrush Current, Overcurrent, and Short-Circuit Protection
        1. 6.3.4.1 Slew rate (dVdt) and Inrush Current Control
          1. 6.3.4.1.1 Start-Up Timeout
        2. 6.3.4.2 Steady-State Overcurrent Protection (Circuit-Breaker)
        3. 6.3.4.3 Active Current Limiting During Start-Up
        4. 6.3.4.4 Short-Circuit Protection
      5. 6.3.5  Analog Load Current Monitor (IMON)
      6. 6.3.6  Overtemperature Protection
      7. 6.3.7  Analog Junction Temperature Monitor (TEMP)
      8. 6.3.8  FET Health Monitoring
      9. 6.3.9  Single Point Failure Mitigation
        1. 6.3.9.1 IMON Pin Single Point Failure
        2. 6.3.9.2 IREF Pin Single Point Failure
      10. 6.3.10 General Purpose Digital Input/Output Pins
        1. 6.3.10.1 Fault Response and Indication (FLT)
        2. 6.3.10.2 Power Good Indication (PG)
        3. 6.3.10.3 Parallel Device Synchronization (SWEN)
      11. 6.3.11 Stacking Multiple eFuses for Unlimited Scalability
        1. 6.3.11.1 Current Balancing During Start-Up
      12. 6.3.12 Quick Output Discharge(QOD)
      13. 6.3.13 Write Protect Feature(WP#)
      14. 6.3.14 PMBus® Digital Interface
        1. 6.3.14.1  PMBus® Device Addressing
        2. 6.3.14.2  SMBus Protocol
        3. 6.3.14.3  SMBus™ Message Formats
        4. 6.3.14.4  Packet Error Checking
        5. 6.3.14.5  Group Commands
        6. 6.3.14.6  SMBus™ Alert Response Address (ARA)
        7. 6.3.14.7  PMBus® Commands
        8. 6.3.14.8  Analog-to-digital Converter
        9. 6.3.14.9  Digital-to-analog Converters
        10. 6.3.14.10 DIRECT format Conversion
        11. 6.3.14.11 Blackbox Fault Recording
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Single Device, Standalone Operation
      2. 7.1.2 Single TPS1689 and multiple TPS1685 Devices, Parallel Connection
      3. 7.1.3 Multiple TPS1689 Devices: Parallel Connection With Individual Telemetry
      4. 7.1.4 Multiple Devices, Independent Operation (Multi-zone)
    2. 7.2 Typical Application: 54-V, 2-kW Power Path Protection with PMBus® Interface in Datacenter Servers
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Performance Plots
    3. 7.3 Power Supply Recommendations
      1. 7.3.1 Transient Protection
      2. 7.3.2 Output Short-Circuit Measurements
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Application Limitation and Errata
  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
    1. 11.1 Mechanical Data
  13. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • VMA|23
Thermal pad, mechanical data (Package|Pins)
Orderable Information
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    • Full reading width
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Data Sheet

TPS16890 9V–80V, 3.65mΩ, 20A Stackable Integrated Hotswap (eFuse) With PMBus Digital Telemetry

1 Features

  • Input operating voltage range: 9V to 80V
    • 92V absolute maximum rating
    • Withstands negative transient voltages
      up to –5V at output
  • Integrated FET with low ON-resistance
    • RON = 3.65mΩ (typ)
  • PMBus interface for telemetry, control, configuration, and debug
    • PIN/EIN/VIN/VOUT/IIN temperature and
      fault monitoring
    • VIN/VOUT monitoring accuracy: ±0.5%
    • Programmable overcurrent protection
      • Adjustable overcurrent threshold: 2A to 20A
      • Programmable transient overcurrent timer (OC_TIMER)
    • Programmable slew rate control (dvdt)
    • Programmable Power Good/fault/alert indication
    • Programmable overtemperature protection
    • Non-volatile configuration memory for configuration values
    • Blackbox fault recording with option to store in external EEPROM
  • Fast trip response to severe overcurrent (short-circuit) events
  • Precise analog load current monitoring (IMON)
    • <3% error over 50%–100% of max current
  • Small footprint: QFN 6mm × 5mm
    • IPC9592B clearance for 60V

2 Applications

  • Server and high performance computing

  • Network interface cards
  • Graphics and hardware accelerator cards
  • Datacenter switches and routers
  • Input hotswap and hotplug
  • Fan trays

3 Description

The TPS1689x is an integrated high current circuit protection and power management solution in a small package. The device provides multiple protection modes using very few external components and is a robust defense against overloads, short circuits and excessive inrush current. The integrated PMBus™ interface allows a host controller to monitor, control and configure the system in real-time. Key system parameters can be read back for remote telemetry. Various protection/warning thresholds and coefficients can be configured through PMBus or stored in non-volatile configuration memory. An integrated fast and accurate sense analog load current monitor facilitates predictive maintenance and advanced dynamic platform power management such as Intel® PSYS and PROCHOT to optimize server and data-center performance. Blackbox fault recording feature helps in debug of field failure/returns. For higher current support, TPS1689x can be connected in parallel with TPS1685x. The devices are characterized for operation over a junction temperature range of –40°C to +125°C.

Package Information
PART NUMBERPACKAGE(1)PACKAGE SIZE(2)
TPS16890VMA (LQFN, 23)5mm × 6mm
(1) For all available packages, see Section 11.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
TPS1689 Simplified Schematic Simplified Schematic

 
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