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Electronic fuses and the evolution of overcurrent protection

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An old saw often uttered by an electrical engineer (or their hapless techs) when an electronic device releases its magic smoke goes something like this: “The transistor bravely sacrificed itself to protect the fuse.” Microchip’s Silicon Carbide E-Fuse demonstrator is available in six variants for 400–800 V battery systems.

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A closer look at multilevel traction inverters

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The vast majority of EV traction motors must be supplied with sinusoidal 3-phase alternating current with the frequency proportional to RPM, and the overwhelmingly favorite way to do this is with a triple half-bridge voltage source inverter, or VSI. In this topology, each bridge switch can connect its output terminal (i.e.