Parallel Resonant Converter: CCM State-Plane TrajectoryECEN5817 Lecture 27ECEN 58171State plane trajectory: DCVMAs predicted by DCVM trajectorypyCCM analysisDCVM trajectoryDCVM occurs whenECEN 58172DCVM occurs whenDiscontinuous conduction mode (DCVM)• Occurs at heavy load and low output voltage• During the “discontinuous” interval, all four output diodes are forward-biased• The capacitor voltage waveform exhibits an additional subinterval with vc= 0ECEN 58173CCM/DCVM boundaryCCM solution:ECEN 58174CCM/DCVM Boundary in the Output PlaneECEN 58175DCVM solutionMode boundaryySteady-state solution (see notes)Output characteristicsOutput characteristicsSolid lines: CCMDashed lines: DCVMECEN 58176Using output-plane characteristic to design a parallel resonant converterECEN
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