QUASI-PUSH-PULL SINGLE-STEP DC VOLTAGE CONVERTER Russian patent published in 2024 - IPC H02M3/335 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, in particular to single-step DC voltage converters, and can be used in secondary power supply systems for conversion, stabilization and regulation of constant output voltage, galvanically separated from input constant voltage. Device comprises power transformer 2, in which the beginning of first primary winding 1 is connected to the positive terminal of the input DC voltage source, and the end of first primary winding 1 through control switch 3 is connected to the negative terminal of the input constant voltage source, which forms a common bus. Capacitor 4 is connected to the common point of connection of control switch 3 with the end of first primary winding 1, the second pole of which is connected to the end of second primary winding 5, the beginning of which is connected to the common bus. Anode of diode 6 is connected to the common point of connection of capacitor 4 with the end of winding 5, the cathode of which is connected to the positive terminal of the input constant voltage source. Between the beginning and the end of secondary winding 7 of transformer 2 there are two linear inductors 8, 9 connected in series. Rectifier diodes 10, 11 are connected to the beginning and end of secondary winding 7, the cathodes of which are combined into a common connection point and connected to the first pole of filter capacitor 12, which second pole is connected to common point of connection of linear inductors 8,9. Load 13 is connected in parallel to filter capacitor 12.

EFFECT: elimination of high-voltage surge of voltage on power control switch when it is switched on due to presence of leakage inductance on primary winding of transformer, to which a power control switch is connected, increasing the efficiency of the output circuit, balancing the magnetization of the power transformer.

2 cl, 2 dwg