High-gain quasi-resonance DC-DC converter based on voltage doubling rectifying circuit

The invention discloses a high-gain quasi-resonance DC-DC converter based on a voltage doubling rectifying circuit, and relates to the technical field of high-gain DC-DC converters. According to the present invention, on the basis of half-bridge quasi-resonance high-gain circuit topology, and by combining a bidirectional positive and negative voltage doubling rectifying circuit, the high-gain DC-DC converter is provided. The converter can further improve the output voltage gain and reduce the output voltage ripples, enables the system efficiency to be improved while the number of turns of a high-frequency transformer is reduced, at the same time, can realize the soft switching control, thereby having the advantages of small voltage and current stress, high efficiency and the like. 本发明公开了一种基于倍压整流电路的高增益准谐振DC-DC变换器，涉及高增益DC-DC变换器技术领域。本发明在半桥准谐振高增益电路拓扑的基础上，结合双向正负倍压整流电路，提出一种高增益DC-DC变换器。该变换器能进一步提高输出电压增益和降低输出电压纹波；在降低高频变压器匝数的同时，提高系统效率；同时，变换器能实现软开关控制，从而具有电压电流应力小和效率高等优点。