In the wake of gallium-nitride (GaN) transistor introductions, a number of semiconductor makers have begun to reassess the role played by conventional MOSFETs. The introduction of GaN devices doesn’t automatically obsolete the legacy MOSFETs, but the prospect of improving power-supply efficiencies and reducing their form factors is stimulating the imagination of analog engineers. In advance of what some are calling “The GaN Revolution,” it makes sense to review what legacy part types are available, and what you can do with them...
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