Power supply circuit, mainboard and electronic equipment

The embodiment of the utility model provides a power supply circuit, a mainboard and an electronic device, the power supply circuit comprises a power conversion circuit and N output control circuits, and N is a positive integer not less than 2; a conversion input pin of the power conversion circuit is used for being electrically connected with an external power supply, and a conversion output pin of the power conversion circuit is electrically connected with power input pins of the N output control circuits at the same time. A power indication pin of the power conversion circuit is electrically connected with a delay pin of one output control circuit, and a feedback output pin of each output control circuit is electrically connected with a delay pin of the other output control circuit. According to the power supply circuit provided by the embodiment of the utility model, multi-path output and sequential control can be realized through connection and cooperation of the power conversion circuit and the N output