Power supply of novel device stacking structure

The utility model provides a power supply with a novel device stacking structure, which comprises a first PCB (printed circuit board), a second PCB and a third PCB, the second PCB is vertically arranged on one side of the first PCB in the width direction, and an EMI filtering unit is arranged on the inner end face of the second PCB; the third PCB is vertically arranged on one side of the first PCB in the length direction, a PFC boost inductance coil is printed on the third PCB, and a PFC boost inductance magnetic core sleeves the third PCB; and the fourth PCB is vertically arranged on the other side of the first PCB in the length direction, a transformer coil is printed on the fourth PCB, and a transformer magnetic core is sleeved on the fourth PCB. According to the utility model, the board occupation area of the device on the first PCB is effectively reduced, the overall space utilization rate is improved, and the power density of the product is improved. Meanwhile, main heating elements are distributed on t