Study of a New Soft-switched Converter

A new soft-switched Boost PFC rectifier integrated with a Flyback converter is studied sufficiently in this paper.A simple method with some common components is constructed to control this circuit,and a 400V/175W Boost rec-tifier integrated with a 12V/ 36W Flyback converter is built and tested,the total output power is 212W with 93.7% highest efficiency,and the working frequency is 148kHz.The result confirms that the control method is good for this circuit while all the switches can realize soft-switching,and this circuit can be recommended in some areas.