Vishay Siliconix's SiC645 is a smart VRPower device that integrates a high-side and low-side MOSFET and a high-performance driver with an integrated bootstrap FET. The SiC645 offers high-accuracy current and temperature monitors that can be fed back to the controller and doubler to complete a multiphase DC/DC system. They simplify design and increase performance by eliminating the DCR-sensing network and associated thermal compensation. Light-load efficiency is supported via a dedicated left control pin. An industry-leading thermally enhanced, dual-cooled, 5 mm x 5 mm PowerPAK MLP package allows minimal overall PCB real estate and low-profile construction. The devices feature a 3.3 V (SiC645A) or 5 V (SiC645), compatible tri-state PWM input that, working together with multiphase PWM controllers, will provide a robust solution in the event of abnormal operating conditions. The SiC645 also improves system performance and reliability with integrated fault protection of UVLO, over-temperature, and over-current. An open-drain fault reporting pin simplifies the handshake between the smart VRPower device and the multiphase controllers and can be used to disable the controller during start-up and fault conditions.