Impact of supply voltage change on the energy performance of boost quasi-resonant converter for radioelectronic equipment power supplies

This article presents the impact assessment of supply voltage changes on electromagnetic and electrical processes in transistor switch of boost quasi-resonant converter with zero-current switching (QRC-ZCS) with a parallel resonant circuit. Input voltage affects not only the energy processes in the circuits of pulse converters (PC) with QRC-ZCS and pulse-width modulation (PWM), but also on the duration of switching intervals. The paper shows the evaluation of changes in the duration of switching processes in boost QRC-ZCS with a parallel resonant circuit. The fulfilled investigations have shown that increase of input voltage in parallel QRC-ZCS from 10 to 100 V leads to reduction of dynamic switching intervals, along with almost constant switching intervals of the transistor switch open state and constant transistor switch control pulses duration.