Flyback switching power supply circuit

• Main Authors: LIU MINGJIE, GU GUOHUI
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2023
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The utility model discloses a flyback switching power supply circuit, which relates to the technical field of power supplies and comprises an output circuit processing circuit, a feedback circuit, a second filtering and rectifying circuit, a power supply chip U1 and a driving control circuit. The output circuit processing circuit comprises a power supply end, an EMC (Electro Magnetic Compatibility) filter circuit, a first filter rectifier circuit, an absorption circuit and a transformer T1; the power supply end is electrically connected with the EMC filter circuit; the EMC filter circuit is connected with the first filter rectifier circuit; the first filtering and rectifying circuit is electrically connected with the absorption circuit; the absorption circuit is electrically connected with the transformer T1 and the power supply chip U1; the transformer T1 is connected with the feedback circuit; the feedback circuit is electrically connected with the driving control circuit; the beneficial effects of the util