Patent ID: 11916477
Assignee: WUXI CHIPOWN MICROELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A non-isolated power supply system, comprising: a rectifier unit, an output inductor, a feedback diode, and a voltage conversion circuit according to claim 1;
wherein an input end of the rectifier unit is coupled to an external Alternating Current (AC) power supply, an output end of the rectifier unit is coupled to a high-voltage input pin of the switching power supply chip of the voltage conversion circuit, and the rectifier unit is adapted to rectify the external AC power supply into a Direct Current (DC) which is input to the high-voltage input pin;
wherein an input end of the output inductor is coupled to the chip ground pin of the switching power supply chip, and an output end of the output inductor is coupled to an output end of the non-isolated power supply system; and
wherein a positive electrode of the feedback diode is coupled to the output end of the non-isolated power supply system, and a negative electrode of the feedback diode is coupled to the chip power pin, which is adapted to feed back an output voltage of the non-isolated power supply system to the chip power pin.