Texas Instruments TPS2471 Power-Limiting Hot-Swap Controllers

Texas Instruments TPS2471 2.5V to 18V High-Efficiency Power-Limiting Hot-Swap Controllers offer a safe solution to driving an external N-channel MOSFET. The TPS2471 offers protection features, including programmable current limit and fault time to protect the supply and load from the excessive current at startup. The device provides currents above the user-selected limit that are allowed to flow until programmed timeout after startup. The exception is in extreme overload events when the load is immediately disconnected from the source. The current sense threshold at 25mV is highly accurate and allows the use of smaller, more efficient sense resistors. These features make the TPS2471 offer a lower power loss and a smaller footprint. The programmable power limiting ensures the external MOSFET operates inside its safe operating area (SOA) at all times. This feature improves system reliability by allowing the use of smaller MOSFETs.