HIGH-EFFICIENCY ACTIVE-CLAMPING CONSTANT VOLTAGE CONVERTER Russian patent published in 2024 - IPC H02M3/335 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in secondary power supply systems for conversion, regulation and stabilization of constant output voltage, galvanically separated from constant input voltage, and reduction of dynamic and static losses. Device comprises transformer (2), the beginning of primary winding (1) of which is connected to positive pole of input constant voltage source, and the end of primary winding (1) is connected through power control switch (3), implemented in the form of a field-effect transistor MOSFET, to the negative pole of the input source of constant voltage. In parallel to primary winding (1) of transformer (2) there is a clamping element composed of series-connected capacitor (4) and additional switch (5), implemented in the form of a field-effect transistor MOSFET. Beginning of secondary winding (6) of transformer (2) is connected to the anode of rectifying diode (7), the cathode of which is connected to one of the outputs of capacitor (8), the second output of which is connected to the end of secondary winding (6). End of secondary winding (6) is connected to one of the outputs of capacitor (9). Second output of capacitor (9) is connected to the anode of rectifying diode (10), the cathode of which is connected to the beginning of secondary winding (6). Load (11) is connected in parallel to series-connected capacitors (8, 9). Control electrodes of switches (3, 5) are connected to pulse-width controller (12).

EFFECT: generation of constant output voltage from constant input voltage and reduction of dynamic and static losses.

1 cl, 2 dwg