Design of Cascaded Boost Power Supply

In this paper, a cascaded high-power high-ratio boost power supply is designed and verified. The power supply is improved by adding a resonant rectifier circuit on the basis of the push-pull topology and the BOOST topology cascade structure, which not only retains the advantages of the push-pull topology and the BOOST topology, but also greatly improves the boost capacity. At the same time, the addition of the resonant rectifier circuit realizes the soft switching of the primary side switch on the primary side, which improves the output power level of the circuit. In this paper, the working principle of each level of boost topology is described in detail, and the performance of the designed cascade boost power supply is verified by simulation experiments.