TABLE OF CONTENTS DC/DC converters are widely used in industrial applications and computer hardware circuits. DC/DC conversion technique has been developed very quickly. Since 1920s there have been more than 500 DC/DC converters' topologies developed. Professor Luo and Dr. Ye have systematically sorted them in six generations in 2001. They are the firstgeneration (classical) converters, second-generation (multiquadrant) converters, third-generation (switched-component) converters, fourth-generation (soft-switching) converters, fifth-generation (synchronous-rectifier) converters and sixthgeneration (multi-element resonant power) converters.
The first-generation converters perform in a single quadrant mode with low power range (up to around 100 W), such as buck converter, boost converter and buck-boost converter. Because of the effects of parasitic elements, the output voltage and power transfer efficiency of all these converters are restricted.
The voltage-lift (VL) technique is a popular method that is widely applied in electronic circuit design. Applying this technique effectively overcomes the effects of parasitic elements and greatly increases the output voltage. Therefore, these DC/DC converters can convert the source voltage into a higher output voltage with high power efficiency, high power density, and a simple structure.
The VL converters have high voltage transfer gains, which increase in arithmetical series stage-by-stage. Super-lift (SL) technique is more powerful to increase the converters voltage transfer gains in geometric series stage-by-stage. Even higher, ultra-lift (UL) technique is most powerful to increase...
