After completing the circuit review, Murata used the Murata Power Inductor Selection Tool (MPST) to select a number of products best suited for the circuitry concerned, after which a final evaluation was carried out. As a result, a product with an even better conversion efficiency was identified.
The product was incorporated into the DC-DC converter unit right away, and final checks showed that the target battery operation time had been successfully achieved. During the collaborative evaluation, the noise generated from the DC-DC converter was also measured, and a plan of action to suppress it was discussed. As a solution to the noise problem, Murata decided to use chip ferrite beads and, taking their affinity with the selected power inductor into account, Murata was able to present Company K with circuitry that had the lowest possible power loss.
In this way, the target battery operation time issue and noise suppression measures were worked on simultaneously, and the prototype of the new tablet was successfully completed within both the specified timeframe and the projected budget.