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NCP81105 fiches techniques PDF

ON Semiconductor - 1/2/3 Phase Power Controller

Numéro de référence NCP81105
Description 1/2/3 Phase Power Controller
Fabricant ON Semiconductor 
Logo ON Semiconductor 





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NCP81105 fiche technique
NCP81105, NCP81105H
DrMOS Supporting, 1/2/3
Phase Power Controller
with SVID Interface for
Desktop and Notebook
VR12.5 & VR12.6 CPU
Applications
The NCP81105 is a DrMOS supporting controller optimized for
Intel® VR12.5 & VR12.6 compatible CPUs. The controller combines
true differential voltage sensing, differential inductor DCR current
sensing, input voltage feedforward, and adaptive voltage positioning
to provide accurately regulated power for both Desktop and Notebook
CPU applications. The control system is based on DualEdge
pulsewidth modulation (PWM), to provide the fastest initial response
to dynamic load events plus reduced system cost. The NCP81105 is
compatible with DrMOS type power stages such as NCP5367,
NCP5368, NCP5369 and NCP5338.
The NCP81105’s output can be configured to operate in single phase
during light load operation improving overall system efficiency. A
high performance operational error amplifier is provided to simplify
compensation of the system. Patented Dynamic Reference Injection
further simplifies loop compensation by eliminating the need to
compromise between closedloop transient response and Dynamic
VID performance. Patented Total Current Summing provides highly
accurate current monitoring for droop and digital current monitoring.
http://onsemi.com
MARKING
DIAGRAM
1 36
QFN36
CASE 485CC
1
NCP
81105
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = PbFree Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 35 of this data sheet.
Features
Meets Intel’s VR12.5 Specifications
Implements VR12.6 PS4 State and SVID Reporting
Mixed Voltage/Current Mode, Dual Edge Modulation
for Fastest Initial Response to Transient Loading
High Impedance Differential Voltage Amplifier
High Performance Operational Error Amplifier
High Impedance Total Current Sense Amplifier
True Differential Current Sense Amplifiers for
Balancing Current in Each Phase
Digital Soft Start Ramp
Dynamic Reference Injection
Accurate Total Summing Current Amplifier
“Lossless” Inductor DCR Current Sensing
Summed, Thermally Compensated Inductor Current
Sensing for Adaptive Voltage Positioning (AVP)
48 mV/ms Fast Output Slew Rate (NCP81105)
10 mV/ms Fast Output Slew Rate (NCP81105H)
Programmable Slow Slew Rates as a Fraction of Fast
Slew Rate
Reduced Enable to First SVID Command Latency
PhasetoPhase Dynamic Current Balancing
Switching Frequency Range of 280 kHz to 1.5 MHz
Starts up into PreCharged Loads while Avoiding False
OVP
Compatible with DrMOS Power Stages
Powersaving Phase Shedding
Vin Feedforward Ramp Slope Compensation
Pin Programming for Internal SVID parameters
Output Over Voltage Protection (OVP) & Under
Voltage Protection (UVP)
Over Current Protection (OCP)
Power Good Output with Internal Delays
This is a PbFree Device
Applications
Desktop and Notebook Microprocessors
© Semiconductor Components Industries, LLC, 2013
October, 2013 Rev. 2
1
Publication Order Number:
NCP81105/D

PagesPages 30
Télécharger [ NCP81105 ]


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