20.TOPSwitch-GX Flyback Design Methodology

Designing an off-line power supply involves many aspects of electrical engineering: analog and digital circuits, bipolar and MOS power device characteristics, magnetics, thermal considerations, safety requirements, control loop stability, etc.This represents an enormous challenge involving complex trade-offs with a large number of design variables. As a result,new off-line power supply development has always been tedious and time consuming even for the experts in the field. This application note introduces a simple, yet highly efficient methodology for the design of TOPSwitch-GX family based off-line power supplies. For TOPSwitch-GX Flyback designs,Power Integrations recommends the use of PI Expert which implements this design methodology and also includes a knowledge base and optimization feature for making key design choices, further reducing design time.



TOPSwitch-GX Flyback
Design Methodology
Application Note AN-32
Designing an off-line power supply involves many aspects of and a step-by-step design procedure. The flow chart shows the
electrical engineering: analog and digital circuits, bipolar and design sequence at a conceptual level for TOPSwitch-GX
MOS power device characteristics, magnetics, thermal flyback power supply design. The step-by-step procedure gives
considerations, safety requirements, control loop stability, etc. details within ea