TPS24700/1 High-Efficiency Hot-Swap Controller

By Texas Instruments 207

TPS24700/1 High-Efficiency Hot-Swap Controller

Texas Instruments' TPS24700/1 is an easy-to-use, 2.5 V to 18 V, hot-swap controller that drives an external N-channel MOSFET. The programmable current limit and fault time protect the supply and load from excessive current at startup. After startup, currents above the user-selected limit are allowed to flow until programmed timeout, except in extreme overload events when load is immediately disconnected from source. The low, 25 mV current sense threshold is highly accurate and allows use of smaller, more-efficient sense resistors, yielding lower power loss and smaller footprint. A power-good output is provided for status monitoring and downstream load control. TPS24700/1 replaces the LTC4211 in existing designs with no PCB board changes and only minor external component changes, yielding a more accurate, efficient solution.

  • 2.5 V to 18 V operation
  • Accurate current limiting for startup
  • Accurate 25 mV current-sense threshold
  • Timed overcurrent breaker
  • Power-good output
  • Fast breaker for short-circuit protection
  • Latch off (TPS24700) and retry versions (TPS24701)
  • Programmable UV threshold
  • Drop-in upgrade for LTC4211 – no layout
  • MSOP-8 package
  • Server backplanes
  • Storage area networks (SAN)
  • Medical systems
  • Plug-in modules
  • Base stations
  • Consumer electronics