High Step-Up DC-DC Push-Pull Resonant Based on low Cost half-wave Class-D Rectifier

This paper presents high step-up DC-DC push-pull resonant based on low cost half-wave class-D rectifier, it provides high of voltage for a 12 VDc from battery via isolated transformer and half-wave class-D rectifier. The main switches of push-pull and diode half-wave rectifier operated under can be achieve to ZCS condition. The benefit propose of this technique is used self-leakage inductance for ZCS of both power switch and leakage inductance used designing resonant tank secondary side. A prototype high voltage conversion ratio push-pull resonant converter was built and operated at a 250 kHz fixed switching frequency, a rate 360 VDc output voltage and efficiency eques to 92 % at the 190 W maximum output full load. The objective analysis the effect of parasitic junction capacitance of half-wave rectifier which has significant include of this purpose is to operating point of resonant tank and voltage. In this paper introduced verify implement prototype. The circuit proposed and analysis was verified by experimental result. From a result is presented in agreement with the theoretical analysis and experimental work.