NCP5393 Datasheet, PDF (1/21 Pages) ON Semiconductor – 2/3/4-Phase Controller for CPU Applications

NCP5393
2/3/4-Phase Controller for
CPU Applications
The NCP5393 controls up to four V_DD phases and one V_DDNB
phase to provide a buck regulator solution for current and
next-generation AMD processors. The NCP5393 incorporates
differential voltage sensing, differential phase current sensing,
optional load-line voltage positioning, and programmable V_DD and
V_DDNB offsets to provide accurately regulated power parallel- and
serial-VID AMD processors. Dual-edge multiphase modulation
provides the fastest initial response to dynamic load events. This
reduces system cost by requiring less bulk and ceramic output
capacitance to meet transient regulation specifications.
High performance operational error amplifiers are provided to
simplify compensation of the V_DD and V_DDNB regulators. Dynamic
Reference Injection further simplifies loop compensation by
eliminating the need to compromise between response to load
transients and response to VID code changes.
Features
•ăMeets AMD's Parallel, Serial (SVI) and Hybrid VR Specifications
•ăUp to Four V_DD Phases
•ăSingle-Phase V_DDNB Controller
•ăDual-Edge PWM for Fastest Initial Response to Transient Loading
•ăHigh Performance Operational Error Amplifiers
•ăInternal Soft Start and Slew Rate Limiting
•ăDynamic Reference Injection (Patent #US07057381)
•ăDAC Range from 12.5 mV to 1.55 V
•ă$0.5% DAC Accuracy fro 0.8 V to 1.55 V
•ăV_DD and V_DD Offset Ranges 0 mV - 800 mV
•ăTrue Differential Remote Voltage Sense Amplifiers
•ăPhase-to-Phase I_DD Current Balancing
•ăDifferential Current Sense Amplifiers for Each Phase of Each Output
•ă“Lossless” Inductor Current Sensing for V_DD and V_DDNB Outputs
•ăSupports Load Lines (Droop) for V_DD and V_DDNB Outputs
•ăOscillator Range of 100 kHz - 1 MHz
•ăTracking Over Voltage Protection
•ăOutput Inductor DCR-Based Over Current Protection for V_DD and
V_DDNB Outputs
•ăGuaranteed Startup into Precharged Loads
•ăTemperature Range: 0°C to 70°C
•ăThis is a Pb-Free Device*
Applications
•ăDesktop Processors
•ăServer Processors
•ăHigh-End Notebook PCs
*For additional information on our Pb-Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://onsemi.com
MARKING
DIAGRAM
1
1 48
QFN48, 7x7
CASE 485AJ
NCP5393
AWLYYWWG
A
= Assembly Location
WL = Wafer Lot
YY
= Year
WW = Work Week
G
= Pb-Free Package
ORDERING INFORMATION
Device
Package
Shipping^†
NCP5393MNR2G QFN48 2500 / Tape & Reel
(Pb-Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
©Ă Semiconductor Components Industries, LLC, 2008
1
February, 2008 - Rev. 0
Publication Order Number:
NCP5393/D