Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 23, Issue 4, Pages 1759-1771Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2008.924616
Keywords
class E inverter; class-F power amplifier; class Phi inverter; harmonic peaking; radio frequency inverter; very high frequency; VHF power converter
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This paper presents a new switched-mode resonant inverter, which we term the Phi(2) inverter, that is well suited to operation at very high frequencies and to rapid on/off control. Features of this inverter topology include low semiconductor voltage stress, small passive energy storage requirements, fast dynamic response, and good design flexibility. The structure and operation of the proposed topology are described, and a design procedure is introduced. Experimental results demonstrating the new topology are also presented. A prototype Phi(2) inverter is described that switches at 30 MHz and provides over 500 W of radio frequency power at a drain efficiency above 92%. It is expected that the Phi(2) inverter will find use as a building block in high-performance dc-dc converters among other applications.
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