NCP81022 Datasheet Dual Output 4 Phase Plus 1 Phase Digital Controller

Manufacturer: onsemi

Overview: NCP81022 Dual Output 4 Phase Plus 1 Phase Digital Controller with SVI2 Interface for Desktop and Notebook CPU Applications www.onsemi.com 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. MARKING DIAGRAM 1 52 QFN52 CASE 485BE NCP81022 AWLYYWWG A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb−Free Package ORDERING INFORMATION See detailed ordering and shipping information on page 40 of this data sheet.

Datasheet Details

Part number	NCP81022
Manufacturer	onsemi
File Size	336.97 KB
Description	Dual Output 4 Phase Plus 1 Phase Digital Controller
Datasheet	NCP81022-onsemi.pdf

Key Features

Meets AMD’S SVI2 Specifications.
Four phase CPU Voltage Regulator.
One phase North Bridge Voltage Regulator.
Current Mode Dual Edge Modulation for Fast Initial Response to Transient Loading.
Dual High Performance Operational Error Amplifier.
One Digital Soft Start Ramp for Both Rails.
Startup into Pre.
Charged Loads while avoiding False.
Dynamic Reference Injection.
Accurate Total Summing Current Am.

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