MOSFET for Hot-Swap Applications

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  • Author: Shunlong Xiao, Peter Wilson

Hot-swapping canoften involve a large transient current (upto hundreds of amperes) to charge theoutput capacitors, which require a robustMOSFET with a large SOA capability during the linear operating mode. For high power and high redundancy, which are critical in telecom-server applications, a hot-swap controller is needed to regulate the inrush transient current. The MOSFETs play a key role in the hot-swap application; thus, this article will evaluate the MOSFET behaviors based on 12V ADM1278 hot-swap circuits from ADI.

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