17 Switching Losses (Worked Examples) | Power Electronics

The video tutorial covers the calculation of switching losses and conduction losses in power electronics, focusing on resistive and inductive loads. It explains how to calculate average voltage and current, switch losses, and conduction losses using specific equations. The tutorial also discusses the importance of thermal resistance in heat sink design to prevent transistor damage. Practical examples with IGBT and MOSFET are provided to illustrate these concepts.

What is the average voltage across a resistive load when the duty cycle is 25% and the supply voltage is 100V?

How do you calculate the average current through a resistor given the average voltage and resistance value?

What are the two components of switch losses in a transistor?

What is the equation for calculating switching losses for a resistive load?

What is the relationship between average current and average voltage in a resistive load?

What factors contribute to the rise in junction temperature of a transistor?

How do you determine the thermal resistance required for a heat sink given the case and ambient temperatures?

How does the on-state resistance of a MOSFET affect conduction losses?

Explain the significance of the duty cycle in relation to switch losses.

What is the maximum instantaneous power dissipation in a MOSFET when the maximum voltage and current occur simultaneously?