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Questions and Answers
What is a characteristic of MOSFETs that makes them suitable for high-frequency applications?
What is a characteristic of MOSFETs that makes them suitable for high-frequency applications?
- High control power requirement
- Current-controlled operation
- Low switching speed
- Voltage-controlled operation (correct)
What is an advantage of MOSFETs over BJTs in terms of control circuit requirements?
What is an advantage of MOSFETs over BJTs in terms of control circuit requirements?
- MOSFETs require deep saturation for off-state
- MOSFETs require a higher control power
- MOSFETs have simpler control circuit requirements (correct)
- MOSFETs require a more complex control circuit
What is a benefit of the negative thermal coefficient of MOSFETs?
What is a benefit of the negative thermal coefficient of MOSFETs?
- It leads to unequal current division among parallel connected devices
- It leads to a higher control power requirement
- It leads to equal current division among parallel connected devices (correct)
- It leads to higher conduction losses
How do MOSFETs compare to BJTs in terms of conduction losses?
How do MOSFETs compare to BJTs in terms of conduction losses?
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What is the typical power rating range of MOSFETs?
What is the typical power rating range of MOSFETs?
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Study Notes
MOSFET Characteristics
- MOSFETs have the highest switching speed compared to other devices.
- They are voltage-controlled, meaning they require low control power to operate.
- MOSFETs have simple control circuit requirements, eliminating the need for deep saturation and zero voltage for the off state.
- The negative thermal coefficient of MOSFETs enables equal current division among parallel connected devices.
- Compared to BJTs, MOSFETs have higher conduction losses.
- MOSFETs are available with power ratings ranging from small to small medium, handling currents in the hundreds of amps.
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