The Design of High Power DC/DC Boost Converter

This paper analyzed several kinds of isolating DC/DC boost converting circuit. Choose isolating boost full bridge circuit as the main circuit of the DC/DC converter according to the designing requirements. Design the advanced isolating boost converting circuit, and use synchronous rectification in the full bridge rectifying circuit linked to the secondary side of the transformer to reduce the power loss of the main circuit and improve the overall efficiency. Analyze the working principle of the main circuit and the simulation mode. Considering the converter has to deal with huge power and current stress, this paper give instructions on the device selection and design method, including the selection of the lock-in tube MOSFET and transformer of the main circuit. At last, simulation of the system is run by using saber, which proves the theoretical analysis to be reasonable and correct.