According to a first aspect, the present disclosure relates to a printed circuit board. The printed circuit board comprises a pair of input terminals consisting of a positive direct current (DC) terminal and a negative DC terminal. The printed circuit board also comprises an output terminal, a positive DC line connected to the positive DC terminal and a negative DC line connected to the negative DC terminal. The printed circuit board further comprises N power switching cells, N being an integer greater than two, the N power switching cells operating in parallel. Each power switching cell comprises a transistor leg, at least one decoupling capacitor in parallel with the transistor leg, and a gate driver circuit. The transistor leg comprises a first transistor and a second transistor connected in series, a drain of the first transistor being connected to the positive DC line, a source of the second transistor being connected to the negative DC line, a source of the first transistor being connected to a drain of the second transistor via an electrical line comprising a connection middle-point, the connection middle-point being connected to the output terminal. The gate driver circuit comprises a first gate driver electrically connected to a gate of the first transistor and a second gate driver electrically connected to a gate of the second transistor for controlling respective switching ON and OFF of the first and second transistors. The N transistor legs of the corresponding N power switching cells are positioned on the printed circuit board to substantially form a convex polygon having N edges of substantially the same length, each one of the N transistor legs of the corresponding N power switching cells being positioned along one of the edges of the convex polygon.