Design for Efficiency Improvement and Future prediction in Multi Chip Module for DC-DC Converter

We present the importance of all the parasitic inductance of the main current path. In order to reduce this parasitic inductance, we adopted new multi chip module (MCM). The MCM has successfully improved the conversion efficiency because of its minimum parasitic inductances. We also introduced new figure of merit (FOM), RonQstr, corresponding to reduction of parasitic LCR. The value of new FOM of conventional trench MOSFET is favorable and efficiency is expected to be reduced by parasitic LCR.