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ON Semiconductor - 2/3/4-Phase Controller with Light Load Power Saving Enhancement

Numéro de référence NCP5392T
Description 2/3/4-Phase Controller with Light Load Power Saving Enhancement
Fabricant ON Semiconductor 
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NCP5392T fiche technique
NCP5392T
2/3/4-Phase Controller with
Light Load Power Saving
Enhancement for CPU
Applications
The NCP5392T provides up to a fourphase buck solution which
combines differential voltage sensing, differential phase current
sensing, and adaptive voltage positioning to provide accurately
regulated power for Intel processors. It also receives power saving
command (PSI) from CPU, and operates in a single phase emulation
diode mode to obtain a high efficiency at light load. Dualedge
pulsewidth modulation (PWM) combined with precise inductor
current sensing provides the fastest initial response to dynamic load
events both in power saving and normal modes. Dualedge
multiphase modulation reduces the total bulk and ceramic output
capacitance required therefore reducing the system cost to meet
transient regulation specifications.
A high performance operational error amplifier is provided to
simplify compensation of the system. Dynamic Reference Injection
further simplifies loop compensation by eliminating the need to
compromise between closedloop transient response and Dynamic
VID performance. An enhancement of normal mode and PSI mode
operation has been achieved in NCP5392T both under heavy load
and light load condition or the load changing.
http://onsemi.com
MARKING
DIAGRAM
1 40
40 PIN QFN, 6x6
MN SUFFIX
CASE 488AR
1
NCP5392T
AWLYYWWG
NCP5392T = Specific Device Code
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = PbFree Package
*Pin 41 is the thermal pad on the bottom of the device.
ORDERING INFORMATION
Features
Meets Intel’s VR11.1 Specifications
Enhanced Power Saving Operation (PSI)
Dualedge PWM for Fastest Initial Response to Transient Loading
High Performance Operational Error Amplifier
Internal Soft Start
Dynamic Reference Injection® (Patent #US07057381)
Device
Package
Shipping
NCP5392TMNR2G* QFN40 2500/Tape & Reel
(PbFree)
*Temperature Range: 0°C to 85°C
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
DAC Range from 0.375 V to 1.6 V
DAC Feed Forward Function (Patent Pending)
±0.5% DAC Voltage Accuracy from 1.0 V to 1.6 V
True Differential Remote Voltage Sensing Amplifier
PhasetoPhase Current Balancing
“Lossless” Differential Inductor Current Sensing
Threshold Sensitive Enable Pin for VTT Sensing
Accurate Current Monitoring (IMON)
Power Good Output with Internal Delays
Differential Current Sense Amplifiers for each Phase
Thermally Compensated Current Monitoring
Adaptive Voltage Positioning (AVP)
This is a PbFree Device
www.DataOSshceiellta4tUo.rcoFmrequency Range of 100 kHz – 1 MHz
Latched Over Voltage Protection (OVP)
Guaranteed Startup into PreCharged Loads
Applications
Desktop Processors
© Semiconductor Components Industries, LLC, 2009
June, 2009 Rev. 0
1
Publication Order Number:
NCP5392T/D

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