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Monday Quiz: Test your knowledge of power MOSFETs

21 Dec 2015  | Martin Rowe

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4. What happens if drain current is forced above that set by VGS in the active region?

a. VDS will rise significantly, resulting in a rise in conduction loss.

b. VDS will drop significantly and the MOSFET will turn off.

c. VGS will adjust itself to keep the device in the Ohmic region.

d. The MOSFET will start to self-switch at a frequency based on RDS(ON) and stray capacitance

e. None of the above

Power MOSFET

5. Total allowed Power Dissipation (PD) is based on:

a. The device's thermal resistance only.

b. The maximum junction temperature and the thermal resistance RΘJC at a case temperature of 0°C

c. The maximum junction temperature and the thermal resistance RΘJC at a case temperature of 100°C

d. The maximum junction temperature and the thermal resistance RΘJC at a case temperature of 25°C.

e. The drain current and the ambient temperature.

f. None of the above

Power MOSFET


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