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ON Semiconductor - 2/3/4-Phase Controller

Numéro de référence NCP5393B
Description 2/3/4-Phase Controller
Fabricant ON Semiconductor 
Logo ON Semiconductor 





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NCP5393B fiche technique
NCP5393B
2/3/4-Phase Controller for
CPU Applications
The NCP5393B is a multiphase synchronous buck regulator
controller designed to power the Core and Northbridge of an AMD
microprocessor. The controller has a user configurable two, three, or
four phase regulator for the Core and an independent single phase
regulator to power the microprocessor Northbridge. The NCP5393B
incorporates differential voltage sensing, differential phase current
sensing, optional loadline voltage positioning, and programmable
VDD and VDDNB offsets to provide accurately regulated power
paralleland serialVID AMD processors. Dualedge 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 VDD and VDDNB 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
Meets AMD’s Hybrid VR Specifications
Up to Four VDD Phases
SinglePhase VDDNB Controller
DualEdge PWM for Fastest Initial Response to Transient Loading
High Performance Operational Error Amplifiers
Internal Soft Start and Slew Rate Limiting
Dynamic Reference Injection (Patent #US07057381)
DAC Range from 12.5 mV to 1.55 V
$0.6% DAC Accuracy from 0.8 V to 1.55 V
VDD and VDD Offset Ranges 0 mV 800 mV
True Differential Remote Voltage Sense Amplifiers
PhasetoPhase IDD Current Balancing
Differential Current Sense Amplifiers for Each Phase of Each Output
“Lossless” Inductor Current Sensing for VDD and VDDNB Outputs
Supports Load Lines (Droop) for VDD and VDDNB Outputs
Oscillator Range of 100 kHz 1 MHz
Tracking Over Voltage Protection
Output Inductor DCRBased Over Current Protection for VDD and
VDDNB Outputs
Guaranteed Startup into Precharged Loads
www.DataTSehmeepte4rUat.cuoremRange: 0°C to 70°C
This is a PbFree Device
Applications
Desktop Processors
Server Processors
HighEnd Notebook PCs
http://onsemi.com
MARKING
DIAGRAM
1
1 48
QFN48, 7x7
CASE 485AJ
NCP5393B
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = PbFree Package
ORDERING INFORMATION
Device
Package
Shipping
NCP5393BMNR2G QFN48 2500 / Tape & Reel
(PbFree)
†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.
© Semiconductor Components Industries, LLC, 2009
June, 2009 Rev. 0
1
Publication Order Number:
NCP5393B/D

PagesPages 24
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