Within a MOSFET-based Class-D amplifier driving a highly inductive load (speaker), which consequence happens when exceeding the MOSFET's Safe Operating Area?

💡 Explanation

Thermal runaway leads to device failure because exceeding voltage or current limits within the Safe Operating Area causes increased power dissipation, creating a positive feedback cycle of heat. Therefore it leads to failure, rather than recovery, threshold shift, or oxide breakdown under typical usage.

• Which outcome occurs when the inductive reactance dominates in a power transformer's secondary circuit?
• Which outcome occurs when a multi-element Yagi-Uda antenna's driven element is poorly impedance matched?
• Which mechanism causes porosity within cast aluminum alloy components?
• Which risk increases when an aircraft's elevon control surfaces experience irreversible actuator jamming?
• Which risk is amplified when a diesel engine's injector nozzle suffers from severe carbon fouling?
• Which outcome occurs when refrigerant maldistribution arises within a multi-circuit evaporator?