Abstract:
Three discontinuous operating modes of PWM (pulsewidth modulated) converters are considered: the discontinuous inductor current mode (DICM), the discontinuous capacitor v...Show MoreMetadata
First Page of the Article
Abstract:
Three discontinuous operating modes of PWM (pulsewidth modulated) converters are considered: the discontinuous inductor current mode (DICM), the discontinuous capacitor voltage mode (DCVM), and a previously unidentified mode called the discontinuous quasi-resonant mode (DQRM). DC and small-signal AC analyses are applicable to all basic PWM converter topologies. Any particular topology is taken into account via its DC conversion ratio in the continuous conduction mode. The small-signal model is of the same order as the state-space averaged model for the continuous mode, and it offers improved predictions of the low-frequency dynamics of PWM converters in the discontinuous modes. It is shown that converters in discontinuous modes exhibit lossless damping similar to the effect of the current-mode programming.<>
Published in: IEEE Transactions on Power Electronics ( Volume: 6, Issue: 3, July 1991)
DOI: 10.1109/63.85890
First Page of the Article
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Unified Analysis ,
- Discontinuous Mode ,
- Operation Mode ,
- Conversion Ratio ,
- Inductor Current ,
- Small-signal Model ,
- Converter Topology ,
- Continuous Conduction Mode ,
- Model In Order ,
- Switching Frequency ,
- State-space Model ,
- Derivation Of Model ,
- Implications For Models ,
- Equivalence Ratio ,
- Current Loop ,
- Operating Region ,
- Switching Cycle ,
- Converter Operation ,
- Duty Ratio ,
- Buck Converter ,
- Model Of Converter ,
- Boost Converter ,
- DC Gain ,
- Power Stage ,
- Derivation Steps ,
- Input Filter ,
- Frequency Range Of Interest ,
- Diode Current ,
- Transfer Function
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Unified Analysis ,
- Discontinuous Mode ,
- Operation Mode ,
- Conversion Ratio ,
- Inductor Current ,
- Small-signal Model ,
- Converter Topology ,
- Continuous Conduction Mode ,
- Model In Order ,
- Switching Frequency ,
- State-space Model ,
- Derivation Of Model ,
- Implications For Models ,
- Equivalence Ratio ,
- Current Loop ,
- Operating Region ,
- Switching Cycle ,
- Converter Operation ,
- Duty Ratio ,
- Buck Converter ,
- Model Of Converter ,
- Boost Converter ,
- DC Gain ,
- Power Stage ,
- Derivation Steps ,
- Input Filter ,
- Frequency Range Of Interest ,
- Diode Current ,
- Transfer Function
