Practice Total Power Dissipation (6.3.3) - MOSFET Switching Circuits - Analog Circuits
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Total Power Dissipation

Practice - Total Power Dissipation

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is dynamic power loss in a MOSFET?

💡 Hint: Think about the ON and OFF states.

Question 2 Easy

What formula is used to calculate conduction losses?

💡 Hint: Look for current and resistance in the equation.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does P_cond represent?

Dynamic losses during switching
Conduction losses in ON state
Leakage losses in OFF state

💡 Hint: Think about what happens when the MOSFET is turned ON.

Question 2

True or False: Leakage losses only occur when the MOSFET is ON.

True
False

💡 Hint: Consider the current flow when the switch is off.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A MOSFET operates with V_DS = 30V, I_D = 3A, at a frequency of 500kHz with t_r = 20ns and t_f = 15ns. Calculate P_sw. If R_DS(on) is 0.1Ω, find the total power dissipation if P_leakage is 5mW.

💡 Hint: Start with P_sw, then P_cond, and don’t forget to add leakages.

Challenge 2 Hard

Discuss the implications on efficiency and thermal design if a MOSFET has high R_DS(on) in a power application.

💡 Hint: Consider how heat affects component longevity and circuit performance.

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Reference links

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