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Its important to highlight again the significance of the Safe Operating Area. The SOA is expressed by a graph in the MOSFETs datasheet which advises the user what combinations of load current and voltage drop are acceptable for what period of time. A MOSFET that cannot be maintained in this area will be destroyed or suffer significant damage. Therefore, a MOSFET should be chosen that will allow the time required to charge up the load in normal power up conditions and also still maintain SOA requirements.

PTM Published on: 2008-04-29