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Short Current Protection Circuit In EV Applications Based On GaN Transistors

Presented by:

  • Dima Novo, VP of Power Electronics, VisIC Technologies

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Apr 19, 2021, 1:00 pm EDT

Ensuring the reliability and safety of electric vehicles is the highest priority of any EV manufacturer. Using wide band gap semiconductors such as GaN gives certain advantages of fast switching. However, short current protection circuit must exhibit nanosecond level detection time in order not to exceed the safe switching operation area of the device and must ensure smooth turn-off.

In this presentation, an original derivative pulsed-current sensor in conjunction with the fast response 2-stage shutdown circuit is evaluated for various short-circuits. The protection circuit is developed and tested with the half-bridge converter evaluation board for 650 V / 80A GaN devices in various short circuit conditions.

NOW ON-DEMAND: Register below to watch a recording of the presentation and audience Q&A, and download the presentation slides.


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The sessions from our Spring EV Engineering Conference are now available to view on-demand. Register for a session below to watch the recording and download the presentation.

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