Which of the following does NOT happen when duty cycle increases?Question 2Select one:a.Output voltage increases (in CCM)b.Current ripple increasesc.Output voltage decreases (in DCM)d.Movement from DCM (Discontinuous Conduction Mode) to CCM (Continuous Conduction Mode)
Question
Which of the following does NOT happen when duty cycle increases?Question 2Select one:a.Output voltage increases (in CCM)b.Current ripple increasesc.Output voltage decreases (in DCM)d.Movement from DCM (Discontinuous Conduction Mode) to CCM (Continuous Conduction Mode)
Solution
The option that does NOT happen when duty cycle increases is:
c. Output voltage decreases (in DCM)
Here's why:
a. Output voltage increases (in CCM): This is true. In Continuous Conduction Mode (CCM), as the duty cycle increases, the output voltage also increases.
b. Current ripple increases: This is also true. The current ripple is directly proportional to the duty cycle. So, as the duty cycle increases, the current ripple also increases.
c. Output voltage decreases (in DCM): This is NOT true. In Discontinuous Conduction Mode (DCM), as the duty cycle increases, the output voltage also increases, not decreases.
d. Movement from DCM (Discontinuous Conduction Mode) to CCM (Continuous Conduction Mode): This is true. As the duty cycle increases, the operation can move from DCM to CCM.
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