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2.7V to 18V, 9A, Integrated Hot-Swap Solution with Current Report Output

Smallest and Most Integrated Hot Swap for 12V Applications

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • Integration Reduces Solution Size for Blade Servers and Other Space-Constrained Designs
    • Integrated 18mΩ (typ) Internal Power MOSFET
    • Overvoltage Protection
    • Power-Good and Fault Outputs
    • Analog Current Reporting Without Need for External RSENSE
    • Thermal Protection
  • Flexibility Enables Use in Many Unique Designs
    • 2.7V to 18V Operating Voltage Range
    • Programmable Inrush Current Control Under SOA Operation
    • Adjustable Circuit-Breaker Current/Current-Limit Threshold
    • Programmable Slew-Rate Control
    • Programmable Undervoltage Lockout
    • Variable-Speed Circuit-Breaker Response
    • Latchoff or Automatic Retry Options
  • Safety Features Ensure Accurate, Robust Protection
    • 9A (max) Load Current Capability
    • ±10% Circuit-Breaker Threshold Accuracy
    • Inrush Current Regulated at Startup with Foldback
    • Implementation for di/dt Control
    • IN-to-OUT Short-Circuit Detection

Applications/Uses

  • Blade Servers
  • Disk Drive Power
  • Industrial Applications
  • RAID Systems
  • Server I/O Cards
  • Storage Applications

Description

The MAX15091/MAX15091A ICs are integrated solutions for hot-swap applications requiring the safe insertion and removal of circuit line cards from a live backplane. The devices integrate a hot-swap controller, 18mΩ (typ) power MOSFET, and an electronic circuit-breaker protection in a single package.

The devices integrate an accurate current-sense circuitry and provide 170µA/A of proportional output current. The devices are designed for protection of 2.7V to 18V supply voltages.

These devices implement a foldback current limit during startup to control inrush current lowering di/dt and keep the MOSFET operating under safe operating area (SOA) conditions. After the startup cycle is complete, on-chip comparators provide VariableSpeed/BiLevel protection against short-circuit and overcurrent faults, and immunity against system noise and load transients. The load is disconnected in the event of a fault condition. The devices are factory calibrated to deliver accurate overcurrent protection with ±10% accuracy. During a fault condition, the MAX15091 latches off, while the MAX15091A enters autoretry mode.

The devices feature an IN to OUT short-circuit detection before startup. The devices provide a power-MOSFET GATE pin to program the slew rate during startup by adding an external capacitor. The devices have overvoltage/undervoltage input pins that can detect an overvoltage/undervoltage fault and disconnect the IN from the OUT. Additional features include internal overtemperature protection, power-good output, and fault-indicator output.

The MAX15091/MAX15091A are available in a 28-pin, 5mm × 5mm TQFN power package and are rated over the -40°C to +85°C extended temperature range.

Simplified Block Diagram

MAX15091, MAX15091A: Typical Application Circuit MAX15091, MAX15091A: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .