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Design considerations
- When a board is plugged into a live system, it is important the in-rush current is carefully controlled to protect the components on the board and ensure other parts of the system do not experience any power disruption.
- MOSFETs with a strong linear mode performance and enhanced safe operating area (SOA) are required to manage this current effectively and reliably
- Once the replacement board is safely installed, the MOSFET is turned fully ON. In this mode of operation, a low RDS(on) value is of primary importance, helping to keep temperatures down and system efficiency at a maximum
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Nexperia in action
PSMN4R8-100BSE referenced in "Evaluating the ADM1272 High Voltage Positive Hot Swap Controller and Digital Power Monitor with PMBus"
![](/dam/jcr:d185a457-182f-42e0-9345-52b31da997e2/EVAL-LTC4286_ANGLE-web.png)
Nexperia in action
A full evaluation kit of Analog Devices latest LTC4286 High Power Positive Hot-Swap Controller uses Nexperia's 100 V, 2.3 mOhm PSMN2R3-100SSE ASFET with enhanced SOA in LFPAK88 in the hot-swap power path.
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