1 Designing a Simple and Low-Cost Flybuck Solution With the TPS62933F

In many applications, simple, low part-count, isolated power supplies working from an input voltage are needed. A popular solution to these requirements is an isolated buck power supply. This application report presents a simple and low-cost flybuck solution using the TPS62933F device. The basic operating principles of a flybuck converter are discussed, operating current and voltage waveforms are shown, and key design equations are derived. Lastly, a step-by-step design example is presented.