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  ON Semiconductor Electronic Components Datasheet  

NCP81105H Datasheet

1/2/3 Phase Power Controller

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NCP81105H pdf
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


  ON Semiconductor Electronic Components Datasheet  

NCP81105H Datasheet

1/2/3 Phase Power Controller

No Preview Available !

NCP81105H pdf
NCP81105, NCP81105H
EN 1
VCC 2
VRHOT# 3
VRMP
THERMAL
MONITOR
UVLO & EN
ENABLE
COMPARATORS
VSP VSN
OVP OVP
DAC
DAC
1.3V
CSREF
DIFF
AMP
DAC
VSP
VSN
CSCOMP
SDIO 4
ALERT# 5
SCLK 6
SVID
INTERFACE
& LOGIC
ENABLE
DRVON
OCP
OVP
DAC
FEED
FORWARD
SCALING
_
VR_RDY 8
ENABLE
PS#
VR READY
LOGIC
DATA
REGISTERS
ROSC 7
TSENSE 9
IMAX 16
INT_SEL 17
VBOOT 30
(VSP VSN)
IOUT
DGAIN 31
VRMP 29
MUX
VRMP
ADC
ENABLE
PS#
VRMP
OSCILLATOR
& RAMP
GENERATORS
COMP
PWM
GENERATORS
OVERCURRENT
COMPARATORS
OCP
Buffer
+
AEMRRPOR 1.3V
MCOURNRITEONRT
IOUT
OVERCURRENT
PROGRAMMING
_
+
CUSRERNESNET
AMP
OVP MAX
OVP
CURRENT
BALANCE
AMPLIFIERS
I2
I3
I1
DRVON
PS#
NCP81105
DRVON
PS#
OVP
OCP
ZERO
CURRENT
DETECTION
POWER
STATE
GATE
Figure 1. Block Diagram
36 VSP
35 VSN
34 DIFFOUT
33 FB
32 COMP
28 IOUT
27 ILIM
26 CSCOMP
25 CSSUM
24 CSREF
23 CSN2
22 CSP2
21 CSN3
20 CSP3
19 CSN1
18 CSP1
15 DRVON
11 SMOD
14 PWM1
13 PWM3
12 PWM2
10 OD#
http://onsemi.com
2


Part Number NCP81105H
Description 1/2/3 Phase Power Controller
Maker ON Semiconductor
Total Page 30 Pages
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