Three-winding coupling inductor type Boost converter

The utility model discloses a three-winding coupling inductor type Boost converter, which comprises a direct current input voltage source, a coupling inductor primary winding, a coupling inductor secondary winding and a three-winding coupling inductor secondary winding, the circuit comprises a coupling inductor, a first secondary winding of the coupling inductor, a second secondary winding of the coupling inductor, an excitation inductor, a power switch tube, a first power diode, a second power diode, a third power diode, a fourth power diode, a fifth power diode, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth power diode. A sixth capacitor and a load resistor; according to the Boost converter, the power switch tube is controlled to be switched on or switched off, an input low-ripple conversion circuit does not need to be additionally connected, control is easy, the size and the cost are reduced, the output voltage is far higher than the input volta