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MAX15090B：2.7V to 18V, 12A, Hot-Swap Solution with Current Report Output

Smallest and Most Integrated Hot Swap for 12V Applications

The MAX15090B/MAX15090C 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, 6mΩ power MOSFET, and an electronic circuit-breaker protection in a single package. The devices integrate an accurate current-sense circuitry and provide 220µA/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 MAX15090B latches off, while the MAX15090C 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 MAX15090B/MAX15090C ICs are available in a 28-bump, 2.07mm x 3.53mm, power wafer-level package (WLP) and are rated over the -40°C to +85°C extended temperature range.

Key Features Integration Reduces Solution Size for Blade Servers and Other Space-Constrained Designs Integrated 6mΩ (typ) Internal Power MOSFET Overvoltage Protection Power-Good and Fault Outputs Programmable Undervoltage Lockout Current Reporting Without Need for External RSENSE Thermal Protection Flexibility Enables Use in Many Unique Designs 2.7V to 18V Operating Voltage Range Adjustable Circuit-Breaker Current/Current-Limit Threshold Programmable Slew-Rate Control Variable-Speed Circuit-Breaker Response Latchoff or Automatic Retry Options Safety Features Ensure Accurate, Robust Protection 12A (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

MAX15090B, MAX15090C: Functional Diagram Applications/Uses Disk Drive Power Industrial RAID Systems Server I/O Cards Storage Bridge Bay

DataSheet

Parametrics

Design kits & evaluation modules

• MAX15090BEVKIT
• MAX15090CEVKIT

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