The slotless BLDC motor is one of the most efficient motor in the fractional horse power range. However, the demand for higher performance, incessantly growing, asks for break-through improvements. A solution to achieve better performances is to use windings printed on a flexible PCB, allowing more elaborated winding shapes and topologies. In this paper, a new winding topology is introduced and compared to three other PCB windings. An analytical magnetic model is presented, and validated by FEM. The comparison shows that the new topology achieves a motor power density 10% higher than the best existing PCB winding. Further, this gain reaches 40% when comparing with the winding shape and topology currently used in the classical windings made of copper wire, suggesting a consequent breakthrough in the performances achievable in the fractional horse power range.