PowerWise® Design University
POWER 210 - Some Real-world Issues of SMPSs
Which one of the following statements is true?
An inductor creates a voltage spike when we suddenly change the voltage across it
An inductor creates a current spike when we suddenly change the current through it
An inductor creates a voltage spike when we suddenly change the current through it
An inductor creates a current spike when we suddenly change the voltage across it
Which of these statements is the most accurate?
The "MIN" of the current limit is important in achieving reliability in low-voltage applications
The "MAX" of the current limit is important in achieving reliability in low-voltage applications
The "MIN" of the current limit is important in achieving reliability in high-voltage applications
The "MAX" of the current limit is important in achieving reliability in high-voltage applications
Which of the following statements is the most accurate?
An inductor saturates if it is driven beyond its voltage rating
An inductor saturates if it is driven beyond its IDC current rating
An inductor saturates if it is driven beyond its ISAT rating
An inductor saturates if it is driven beyond its IRMS rating
The optimum current ripple ratio for most applications is around
0.4
0.8
0.1
1.0
A tantalum capacitor of the following voltage rating can be safely used as the input capacitor for a 25V to 5V buck converter application ---
A 25V capacitor
A 30V capacitor
A 35V capacitor
A 50V capacitor
Which of the following statements is not true?
Ringing at the switching node usually never causes damage or malfunction
Ringing at the switching node can cause EMI
Spikes at the switching node can be seen clearly on an oscilloscope
Spikes at the switching node can cause malfunction and eventual damage
