NCP6151

NCP6151/NCP6151A Dual Output 4 Phase +1/0 Phase Controller with single SVID Interface for Desktop and Notebook CPU Applications http://onsemi.com The NCP6151/NCP6151A dual output four plus one phase buck solution is optimized for Intel VR12 compatible CPUs. The controller combines true differential voltage sensing, differential inductor DCR current sensing, input voltage feed-forward, and adaptive voltage positioning to provide accurately regulated power for both Desktop and Notebook applications. The control system is based on Dual-Edge pulse-width modulation (PWM) combined with DCR current sensing providing the fastest initial response to dynamic load events and reduced system cost. It also sheds to single phase during light load operation and can auto frequency scale in light load while maintaining excellent transient performance. Dual high performance operational error amplifiers are provided to simplify compensation of the system. Patented Dynamic Reference Injection further simplifies loop compensation by eliminating the need to compromise between closed-loop transient response and Dynamic VID performance. Patented Total Current Summing provides highly accurate current monitoring for droop and digital current monitoring. NCP6151A support coupled inductor operation. It operates with 2 phases versus NCP6151 operating with single phase during PS1 mode. Features Meets Intel VR12/IMVP7 Specifications Current Mode Dual Edge Modulation for Fastest Initial Response to Tr...