Single-supply sliding reference multipath-output power supply circuit

The utility model relates to the technical field of industrial sewing machine manufacturing, and especially relates to a single-supply sliding reference multipath-output power supply circuit. The change of an electromagnet driving power supply is selected as the feedback reference to control the adjustment of a flyback switch power supply, and the reference of the electromagnet driving power supply is improved through a voltage drop of one of the other three output power supply circuits, so that an operation panel power supply, an MCU circuit power supply, an IGBT or IPM power supply can work normally when the electromagnet driving power supply is at any working state. In the direct drive lockstitch sewing integrated machine electronic control, multiple circuits can be provided with power for normal work just with one flyback switch power supply being employed; the hardware cost of the electronic control can be reduced to a certain degree; the occupied area of a PCB is reduced to a certain degree; and the reliability of the electronic control is improved.