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← TechnologyWhich consequence emerges when a MOSFET in a switched-mode power supply experiences excessive gate-source voltage?
A)Increased on-state resistance.
B)Reduced switching frequency.
C)Gate oxide breakdown occurs.✓
D)Enhanced thermal dissipation.
💡 Explanation
Gate oxide breakdown occurs due to avalanche multiplication when gate-source voltage exceeds maximum ratings. Device failure happens because the high voltage destroys the insulation capabilities, therefore shorting that transistor element rather than leading to manageable thermal increases.
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