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Questions and Answers
What characterizes continuous conduction mode (CCM)?
What characterizes continuous conduction mode (CCM)?
- The inductor current remains non-zero throughout the switching cycle. (correct)
- The operation involves alternating current input.
- The inductor current reaches zero during the switching cycle.
- The converters are designed exclusively for battery-powered devices.
Which application is most associated with continuous conduction mode?
Which application is most associated with continuous conduction mode?
- AC to DC converters.
- Power supplies for electronic devices. (correct)
- Battery-powered electronics.
- Boost regulator circuits.
What is a distinguishing feature of discontinuous conduction mode (DCM)?
What is a distinguishing feature of discontinuous conduction mode (DCM)?
- It is fundamentally less efficient than continuous conduction mode.
- It requires a larger inductor size than CCM.
- The inductor current constantly varies without reaching zero.
- The inductor current is zero for part of the switching cycle. (correct)
Which type of converter is particularly associated with discontinuous conduction mode?
Which type of converter is particularly associated with discontinuous conduction mode?
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When considering applications of discontinuous conduction mode, which of the following is correct?
When considering applications of discontinuous conduction mode, which of the following is correct?
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Study Notes
Continuous Conduction Mode (CCM)
- CCM is a mode of operation for converters in power electronics.
- In CCM, the inductor current never falls to zero during the switching cycle.
- CCM is used in power supplies for electronic devices.
Discontinuous Conduction Mode (DCM)
- DCM is a mode of operation in power electronics.
- The inductor current falls to zero during part of the switching cycle in DCM.
- DCM is particularly used in simplified flyback converters.
- DCM is used in battery-powered devices.
Simplified Flyback Converters
- Simplified flyback converters are used in DCM.
Boost Regulator
- Boost regulators are a type of converter that uses an inductor to increase the voltage.
- Boost regulators can operate in both CCM and DCM.
Half-Bridge
- A half-bridge is a type of converter that uses two switches to create a high-voltage output.
- Half-bridges can operate in both CCM and DCM.
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