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NCP81141 Datasheet

Single-Phase Controller

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NCP81141 pdf
NCP81141
Single-Phase Controller
with SVID Interface for
Desktop and Notebook CPU
Applications
The NCP81141 SinglePhase buck solution is optimized for Intel
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
applications. The single phase controller uses DCR current sensing
providing the fastest initial response to dynamic load events at reduced
system cost.
The NCP81141 incorporates an internal MOSFET driver for
improved system efficiency. 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
closedloop transient response and Dynamic VID performance.
Patented Total Current Summing provides highly accurate digital
current monitoring.
Features
Meets IntelVR12.6 Specifications
High Performance Operational Error Amplifier
Digital Soft Start Ramp
Dynamic Reference Injection
“Lossless” DCR Current Sensing
Adaptive Voltage Positioning (AVP)
Switching Frequency Range of 250 kHz – 1 MHz
VIN Range 4.5 V 25 V
Startup into PreCharged Load While Avoiding False OVP
Vin Feed Forward Ramp Slope
Over Voltage Protection (OVP) and Under Voltage Protection (UVP)
Over Current Protection (OCP)
VRRDY Output with Internal Delays
These Devices are PbFree and are RoHS Compliant
Applications
Desktop and Notebook Processors
http://onsemi.com
MARKING
DIAGRAM
1
QFN28
CASE 485AR
NCP
81141
ALYWG
G
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = PbFree Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 26 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
January, 2014 Rev. 1
1
Publication Order Number:
NCP81141/D


  ON Semiconductor Electronic Components Datasheet  

NCP81141 Datasheet

Single-Phase Controller

No Preview Available !

NCP81141 pdf
NCP81141
NCP81141
Figure 1. Block Diagram for NCP81141
http://onsemi.com
2


Part Number NCP81141
Description Single-Phase Controller
Maker ON Semiconductor
Total Page 27 Pages
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