High-Frequency Soft-Switching DC-DC Converters for Voltage and Current DC Power Sources

The paper presents soft switching PWM DC-DC converters using power MOSFETs and IGBTs. The attention is focused mainly on the full-bridge converters suitable for high power applications. The properties of the PWM converters are described in comparison to other categories of soft switching converters. An overview of the switching techniques using in the DC-DC converters is included. Considerations are also given to the control methods. The principles of the switching and conduction losses reduction in the PWM converters are illustrated. Various types of snubber circuits are mentioned and their operation and limitations are discussed.

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