Nexperia eFuses support communications

These low-ohmic (17 mΩ), high current (13.5 A), resettable eFuses are designed to protect downstream loads from excessive voltages and safeguard power supplies from load faults and large inrush currents.

Specifically engineered for various 12V hot-swap applications, these eFuses are ideal for use in enterprise communication and storage equipment found in data centres, such as solid-state and hard-disk drives, servers, Ethernet switches, and routers. Additionally, they are suitable for protecting mobile communications infrastructure like 5G radio-heads and industrial automation equipment, including programmable logic controllers (PLC).

The NPS3102A and NPS3102B eFuses feature a wide input voltage range (21 V abs. max) and include an integrated low-resistance pass MOSFET, which minimises voltage drop and power loss. This attribute enhances operating efficiency beyond that achievable by similar devices in the same package type. The current clamp limit can be adjusted between 2 and 13.5 A using a resistor at the ILIM pin, which also allows for real-time load current measurement. Both eFuses include a built-in overvoltage clamp to limit output voltage during an input overvoltage condition, and they offer a 2 μs short-circuit protection response time.

The NPS3102A requires manual reset of the pass-FET after a fault event, whereas the NPS3102B integrates an auto-retry block, which safely attempts to re-enable the pass-FET without user intervention. In addition to rapidly protecting systems against input and output overvoltages and large inrush currents, Nexperia eFuses are designed to shield downstream loads from high current fault conditions, boasting 10% current limiting accuracy. The NPS3102A and NPS3102B are available in DFN3030-10/SOT8037-1 leadless plastic packages, measuring a compact 3.0 x 3.0 x 0.75 mm.