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In a MOSFET-based Class-D amplifier driving an inductive load at 1MHz, which consequence results from insufficient dead-time?

A)Shoot-through current increases significantly
B)Gate oxide breakdown becomes more probable
C)Drain-source voltage ringing is reduced
D)Substrate leakage current decreases rapidly

💡 Explanation

Insufficient dead-time leads to shoot-through, where both MOSFETs are momentarily ON, creating a low-impedance path across the power supply, because energy is wasted through direct conduction rather than efficient transfer therefore increasing current. This failure is more severe, rather than alternative gate oxide breakdowns or ringing changes during switching transitions.

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