ISL691x Digital Multiphase Controllers Renesas Electronics ISL691x Digital Multiphase PWM (Pulse-Width Modulation) Controllers provide up to seven phases assignable in any combination across two outputs and combine with smart power stages to provide a scalable solution from 10A to 450A. The result is enhanced power optimization, including more energy-efficient networking and communications infrastructure equipment. With a flexible X+Y assignment along with PMBus and SVI2 interfaces, the ISL691x Multiphase Controllers are ideal for controlling the microprocessor core, memory, and system rails of AMD SVI2-based platforms.