Quadratic buck-boost converter adopting switched inductors

The invention relates to a quadratic buck-boost converter adopting switched inductors. The converter is connected between a power supply and a load and comprises a secondary BUCK-BOOST circuit and an inductance gain unit; the secondary BUCK-BOOST circuit comprises an input-side inductor, an output-side inductor, a switching tube, an input-side capacitor and an output-side capacitor; the inductance gain unit is connected with the input-side inductor in parallel; and the inductance gain unit is used for storing energy together with the input-side inductor when the switching tube is switched on, and outputting electric energy to the input-side capacitor together with the input-side inductor when the switching tube is switched off. Therefore, under the combined action of the inductance gain unit and the input side-inductor, the gain relationship between power input and output can be greatly improved, the current stress of the input-side inductor can be reduced, the loss is reduced, and the ...