Single-end Flyback with RCD snubber (AC/DC IC 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.
|Integrated PWM controller with built-in Si MOSFET
|＜20W DIP7 Package
Brown Out for SEMI F47 AC Dip requirement
|Integrated PWM controller with built-in 730V Si MOSFET
|＜50W No need of heat sink, Discharge resistor, X-cap, all in one package
|Schottky Barrier Diodes
|Ultra low IR SBD is suitable for rectification purpose, RBxx8 series has wide range of voltage choise
|800V Si FRD
|Lower Vf than RSV series, but ultra fast switching capability