Discontinuous Conduction Mode (DCM) occurs in power converters when the current through the inductor falls to zero before the next switching cycle begins, leading to periods where the inductor is not transferring energy. This mode is significant in low-load conditions and affects the efficiency and control dynamics of converters, requiring different analysis and design considerations compared to Continuous Conduction Mode (CCM).

Discontinuous Conduction Mode

power converters

current through the inductor

A switching cycle refers to the sequence of events in which a switch transitions between its on and off states, often used in contexts like electronics and network management. Understanding switching cycles is crucial for optimizing performance and energy efficiency in systems that rely on frequent state changes.

switching cycle

Inductor not transferring energy

low-load conditions

Efficiency of converters

control dynamics of converters

analysis and design considerations

Continuous Conduction Mode (CCM) is an operational state of power converters where the current through the inductor never falls to zero throughout the switching cycle, resulting in reduced current ripple and improved efficiency. This mode is crucial for applications requiring stable and continuous power delivery, such as in power supplies and motor drives.

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