Three phase Single-end Flyback with RCD snubber (DC input version)
Flyback topologies are the most common and widely used topologies in auxiliary power supply design. Fly-back converter could be single phase as well as three phase types. Fly- back is most commonly used due to its simplicity in design and control, less components, low cost solution, and built-in galvanic isolation.
Single end fly-back is typically used for the power supplies < 250W.
An overview of relevant components, power class and topologies is shown in below table.
|SOP-J8, Low current consumption (19µA), during standby, Gate-clamp circuit
|TO-3PFM, Rds_on= 1.15Ω
|TO-268-2L, Rds_on= 1.15Ω
|TO-268-2L, Rds_on= 750 mΩ
|Schottky Barrier Diodes
|RBQ /RBxx8 series
|Ultra low IR SBD is suitable for rectification purpose, RBxx8 series has wide range of voltage choise