Description
Broadband access devices are placing high efficiency and low cost as major goals for low-power, isolated converters. The discontinuous flyback topology has been the traditional choice at these power levels but continuous mode operation is quickly becoming favored as it allows the use of self-driven, synchronous rectifiers. This topic addresses some of the challenges of CCM operation and their solutions. In particular, after discussing the rationale for the selection of this topology, the subject moves on to the calculation of circuit stresses and magnetic requirements of the power stage. This is followed with an analysis of the compensation of the control loop with its moving right-hand plane zero. Finally, measurements of circuit performance are presented to validate the theoretical circuit analysis.

Course Modules
1. Achieving High-Efficiency with a Multi-Output CCM Flyback Supply Using Self Driven Synchronous Recti