Resonant Inverting Boost DC-DC Converter with Switch-based Capacitors

The research paper discusses the inverting boost DC-DC converter circuit based on resonance structures and switchable capacitors, and with employment of the advanced multilayer ceramic capacitors, MOSFET transistors, and Schottky diodes. Applying additional transistor switchers for commutation of the resonance structures and front end power, significant increase in conversion coefficient is obtained without any significant reduction in energy conversion efficiency. The inverting converter operates in the soft switching mode, and this contributes to effective reduction of the dynamic power losses in semiconductor elements. The converter proposed provides 350 W output when powered from the DC 16 V power front end. At that, the output voltage is 43.97 V, and the operating frequency of transistor switchers is 100 kHz. The inverting boost converter can be used as part of the aircraft starter unit to ensure negative voltage for the inverter in operation.