حفاظت مدار محدودکننده‌های ولتاژ گذرا (تی وی اس) تجهیزات حفاظت در برابر اضافه‌ولتاژ گذرا (اس پی دی)

Product Attributes

Introduction

The MAX15095 family of devices is an integrated solution for hot-swap applications requiring the safe insertion and removal of circuit line cards from a live backplane. They can also be used as electronics circuit breakers for hard drives, solid-state drives, and fans. The devices integrate a hot-swap controller (10.6mΩ typ) power MOSFET, and an electronic circuit-breaker protection in a single package. 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 keeping 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, PG goes low and the devices can latch off (MAX15095) or automatic retry (MAX15095A); the output can also be discharged after a fault event (MAX15095D). 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 an undervoltage/overvoltage input pin (UVOV) that can detect an undervoltage/overvoltage fault and disconnect the IN from the OUT. Additional features include internal overtemperature protection and a power-good output (PG). The devices are available in a 12-pin, 2.5mmx2.5mm FC2QFN package and are rated over a -40°C to +105°C extended temperature range.

Features

• Integration Reduces Solution Size for Blade Servers and Other Space-Constrained Designs
• Integrated 10.6mΩ (typ) Internal Power MOSFET
• Programmable Overvoltage Protection and Undervoltage-Lockout Threshold
• Drive-Present Signal Input (PRSNT pin)
• 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
• Variable-Speed Circuit-Breaker Response
• Latchoff (MAX15095) or Automatic Retry (MAX15095A) Options
• Safety Features Ensure Accurate, Robust Protection
• 6.6A (max) Load-Current Capability
• ±10% Circuit-Breaker Threshold Accuracy
• IN-to-OUT Short-Circuit Detection
• Open-Drain PG Output
• Output Discharge after a Fault Event (MAX15095D Only)
• Programmable Additional Delay (2µs max) to Fast-Comparator Response Time
• Enable Input (EN)

Applications

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