Conference paper
VHF Series-Input Parallel-Output Interleaved Self-Oscillating Resonant SEPIC Converter
If the switches of two resonant SEPIC converters are capacitively coupled, it is possible to obtain a self-oscillating converter in which the two power stages operate in interleaved mode. This paper describes a topology where the inputs of two SEPIC converters are connected in series, thereby sharing the input voltage.
For the same output power and switching frequency, the voltage stress of the switches is reduced by a factor of two while the voltage transformation ratio is doubled. This modification is possible with addition of only two capacitors in the power stage and a biasing circuit. Design considerations and challenges are investigated.
To verify the proposed design, a 70 V input, 37 MHz prototype was built using low-cost switching and passive components, and experimental results are presented. Peak observed efficiency was 82%.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2013 |
| Pages: | 2052-2056 |
| Proceedings: | IEEE ECCE USA 2013 |
| ISBN: | 1479903361 , 147990337X , 147990337x , 9781479903368 and 9781479903375 |
| Types: | Conference paper |
| DOI: | 10.1109/ECCE.2013.6646959 |
| ORCIDs: | Knott, Arnold and Andersen, Michael A. E. |
Capacitance Energy and Industry Applications Frequency conversion; Inverters Logic gates MOSFET Power Topology Voltage measurement
Frequency conversion VHF circuits VHF series-input parallel-output interleaved self-oscillating converter biasing circuit capacitors frequency 37 MHz low-cost switching passive components resonant SEPIC converters resonant power convertors self-oscillating converter switching convertors switching frequency voltage 70 V voltage transformation ratio
