Magnetic assembly and power supply system with same

A magnetic assembly for plural parallel-connected converters, the magnetic assembly comprising:

• plural first magnetic cores stacked over each other from bottom to top, wherein each of the plural first magnetic cores comprises plural legs and a first connection part, and the first connection part is connected with first terminals of the plural legs, wherein the first connection part of the first magnetic core at an upper position is located adjacent to second terminals of the plural legs of the adjacent first magnetic core at a lower position;
• plural coil windings, wherein each coil winding is wound around at least one leg of the plural legs of the corresponding first magnetic core so as to form a magnetic element of the corresponding converter;
• and
• a second magnetic core stacked over the plural first magnetic cores, wherein the second magnetic core is located adjacent to the second terminals of the legs of the topmost first magnetic core;
• wherein electric currents which flow through the plural first coil windings are in the same direction, and the magnetic fluxes through the first connection part of the upper first magnetic core which correspond to the two first coil windings of the two adjacent first magnetic cores are in opposite directions.