
20-1
20.1 Introduction
Resonant converters connect a DC system to an AC or another DC system and control both the power
transfer between them and the output voltage or current [2,4]. ey are used in such applications as
induction heating, very-high-frequency DC–DC power supplies, sonar transmitters, ballasts for uores-
cent lamps, power supplies for laser cutting machines, and ultrasonic generators [3,5].
ere are some common features characterizing the behavior of most, or at least, some of them. DC–
DC and DC–AC converters have two basic shortcomings when their switches are operating in switch
mode. During the turn-on and turn-o time, high ...