In the converter disclosed by the invention, the positive pole of the DC power supply is connected to the positive pole of the input
filter capacitor and one end of the first and third inductors; the other end of the first
inductor is connected to the drain of the first switch tube, the
anode of the first
diode, and the negative pole of the first
capacitor; The other end of the three inductors is connected to the drain of the second switch tube, the
anode of the second
diode, and the
cathode of the second
capacitor; the
anode of the first
capacitor is connected to the anode of the third
diode and one end of the second
inductor; the
cathode of the third diode is connected to the first The anode of the output
filter capacitor and one end of the DC load; the
cathode of the first output
filter capacitor is connected to the other end of the second
inductor, the cathode of the fourth diode, and the anode of the second output filter capacitor; the anode of the second capacitor is connected to the anode of the fourth diode and the anode of the fourth diode. One end of the inductor; the negative
electrode of the second output filter capacitor is connected to the other end of the fourth inductor, the positive
electrode of the third output filter capacitor, and the cathodes of the first and second diodes; the other end of the DC load is connected to the negative
electrode of the input filter capacitor, the negative electrode of the third output filter capacitor, the first and second diodes The source of the two switch tubes and the negative pole of the DC power supply.