Switching Power Supplies A - Z

CHAPTER

1

The Principles of Switching Power Conversion

Introduction

Imagine we are at some busy “metro” terminus one evening at peak hour. Almost instantly,

thousands of commuters swarm the station trying to make their way home. Of course there is

no train big enough to carry all of them simultaneously. So, what do we do? Simple! We

split this sea of humanity into several trainloads — and move them out in rapid succession.

Many of these outbound passengers will later transfer to alternative forms of transport. So

for example, trainloads may turn into bus-loads or taxi-loads, and so on. But eventually, all

these “packets” will merge once again, and a