NCP81022

NCP81022
ON Semiconductor
Dual Output 4 Phase Plus 1 Phase Digital Controller with SVI2 Interface
Package Type: QFN52

The NCP81022 dual output four plus one phase buck solution is optimized for AMD® SVI2 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 an ultra fast initial response to dynamic load events and reduced system cost. The NCP81022 provides the mechanism to shed to single phase during light load operation and can auto frequency scale in light load conditions 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.