PowerWise® Design University

Audio Amplifier Thermal Considerations

What is the purpose of device derating curves?
Limit power output
Make sure TJMAX is not exceeded
Determine maximum supply voltage
None of the above

SpiKe protects against conditions that might cause damage to the application or amplifier. Pick the parameter(s) SpiKe monitors:
Instantaneous peak-temperature
Undervoltages
Shorts to Ground
Overvoltages

What is the difference in PDMAX between SE-mode and BTL-mode?
1X
2X
4X
8X

When the thermal resistance of a heat sink is decreased, the amount of power dissipated can be:
Higher
Lower
Unchanged
Unstable

Which variables are normally associated with a power derating curve?
PDMAX
Ambient temperature
Heat sink area
All of the above