Vishay Siliconix milestones include the first analog switch, the first analog multiplexer, the first small-outline power MOSFET (LITTLE FOOT®), and the first power MOSFETs built on Trench technology (TrenchFET®). This tradition of innovation continues with new silicon technologies designed to maximize power MOSFET performance. In dc-to-dc conversion and load switching, Vishay Siliconix leads the market with high-density TrenchFET silicon processes and innovative package options for better thermal performance (PowerPAK®, PolarPAK®), smaller footprints (ChipFET®, MICRO FOOT®, PowerPAK SC-70, PowerPAK SC-75), and integration of multiple devices (PowerPAIR®). Vishay Siliconix power ICs focus on delivering the optimal and appropriate level of integration for power management and conversion. Recent innovations include the industry’s most powerful DrMOS solution for managing the core voltage in PCs, servers, and other CPU-based systems, and the new microBUCK™ dc-to-dc converter family, which combines the controller IC, MOSFETs, and bootstrap switch for a buck regulator in a tiny 4-mm2 package. The Vishay Siliconix product portfolio now also features high-voltage planar MOSFETs acquired from International Rectifier.