FLYBACK DC-DC POWER CONVERTER Russian patent published in 2023 - IPC H02M1/08 

FIELD: converting technology.

SUBSTANCE: invention relates to converting technology and can be used in secondary power supplies for powering various electronic equipment for a wide range of applications. The DC-DC flyback power converter contains an input filter, a PWM controller, a power transformer, a primary power supply unit, output rectifier diodes, and a feedback circuit. The PWM controller is made in an integrated design. In this case, the converter contains a power switch located between the PWM controller and the power transformer, a low voltage input protection unit. In addition, the power transformer is planar with an additional winding for the primary power supply unit. In this case, the converter contains output U-shaped filters. The feedback circuit is formed from a thermally compensated reference voltage source, an error signal amplifier in the form of a current and voltage amplifier on a dual operational amplifier powered by a secondary power source, and a feedback transformer with a winding ratio of 1:1.

EFFECT: reducing the ripple at the input and output, ensuring the stability of parameters in the long term, increasing reliability and efficiency while reducing the level of electromagnetic radiation.

4 cl, 3 dwg