Hi All, Power PSoC can be used to implement different DC to DC converter topologies for example Buck, Boost, Floating Buck and Buck-Boost. The efficiency of power converter depends on many parameters like switching frequency, mode of operation (Continuous and Discontinuos), selection of external components (Inductor, Capacitor etc), Proper Layout etc. We have mentioned minimum efficiency of 90% in Power PSoC datasheet and practically we have achieved upto 95%. Please find the application note related to PCB guideline available on following link: http://www.cypress.com/?rID=35361 Cheers, Brijesh
