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PDF NCP5381MNR2G Data sheet ( Hoja de datos )

Número de pieza NCP5381MNR2G
Descripción 2/3/4 Phase Buck Controller
Fabricantes ON Semiconductor 
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No Preview Available ! NCP5381MNR2G Hoja de datos, Descripción, Manual

NCP5381
2/3/4 Phase Buck Controller
for VR10 and VR11 Pentium
IV Processor Applications
The NCP5381 is a two- , three- , or four- phase buck controller
which combines differential voltage and current sensing, and
adaptive voltage positioning to power Intel’s most demanding
PentiumIV Processors and low voltage, high current power
supplies. Dual- edge pulse- width modulation (PWM) combined with
inductor current sensing reduces system cost by providing the fastest
initial response to transient loads thereby requiring less bulk and
ceramic output capacitors to satisfy transient load- line requirements.
A high performance operational error amplifier is provided, which
allows easy compensation of the system. The proprietary method of
Dynamic Reference Injection makes the error amplifier
compensation virtually independent of the system response to VID
changes, eliminating the need for tradeoffs between load transients
and Dynamic VID performance.
Features
Meets Intel’s VR 10.0, 10.1, 10.2, and 11.0 Specifications
Dual- Edge PWM for Fastest Initial Response to Transient Loading
High Performance Operational Error Amplifier
Supports both VR11 and Legacy VR10 Soft- Start Modes
Dynamic Reference Injection
8- Bit DAC per Intel’s VR11 Specifications
DAC Range from 0.5 V to 1.6 V
0.5% System Voltage Accuracy
Remote Temperature Sensing per VR11
2, 3, or 4- Phase Operation
True Differential Remote Voltage Sensing Amplifier
Phase- to- Phase Current Balancing
“Lossless” Differential Inductor Current Sensing
Differential Current Sense Amplifiers for each Phase
Adaptive Voltage Positioning (AVP)
Fixed No- Load Voltage Positioning at –19 mV
Frequency Range: 100 kHz–1.0 MHz
Latched Overvoltage Protection (OVP)
Threshold Sensitive Enable Pin for VTT Sensing
Power Good Output with Internal Delays
Programmable Soft- Start Time
Operates from 12 V
This is a Pb- Free Device*
Applications
Pentium IV Processors
VRM Modules
Graphics Cards
Low Voltage, High Current Power Supplies
http://onsemi.com
MARKING
DIAGRAM
1 40
40 PIN QFN, 7x7
MN SUFFIX
CASE 488AG
1
NCP5381
AWLYYWWG
NCP5381 = Specific Device Code
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb--Free Package
*Pin 41 is the thermal pad on the bottom of the device.
ORDERING INFORMATION
Device
Package
Shipping
NCP5381MNR2G QFN--40 2500 / Tape & Reel
(Pb--Free)
†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.
*For additional information on our Pb--Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
Semiconductor Components Industries, LLC, 2010
November, 2010 - Rev. 3
1
Publication Order Number:
NCP5381/D

1 page




NCP5381MNR2G pdf
NCP5381
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
VID_SEL
VR_EN
VR_RDY
VR_HOT
VR_FAN
VTT
680 Ω PULLUPS
+12 V
RVCC
CVCC1
36
U1
2
VCC
VID0
3
4
5
6
7
8
9
10
VID1
VID2
VID3
VID4
VID5
VID6
VID7
VR10/11
1 EN
37 VR_RDY
40 VR_HOT
39 VR_FAN
16 VS--
15 VS+
35
DGND
AGND 14
VREF 34 RNTC1
NTC 38
30
G1
CS1
22
CS1N 21
G2 31
CS2 24
CS2N 23
G3 32
RISO1 RT2 RISO2
NCP5381
CS3 26
CS3N 25
CFB1
RFB1
RFB
RDRP
CD1
RD1
CF RF
CH
17 DIFFOUT
19 VFB
G4 33
CS4 28
CS4N 27
20 VDRP
DRVON 29
18 COMP
ILIM ROSC SS
13 12 11
RLIM1
CSS
12 V_FILTER
D1
BAT54HT1
RT1
RNTC2
NCP3418B
4 VCC BST 1
DRVH 8
3 OD
SW 7
DRVL 5
2 IN PGND 6
C3
C1 NTD85N02RT4
12 V_FILTER
4 VCC BST 1
DRVH 8
3 OD
SW 7
DRVL 5
2 IN PGND 6
12 V_FILTER
4 VCC BST 1
3
OD
DRVH
SW
8
7
DRVL 5
2 IN PGND 6
RLIM2
12 V_FILTER
C4
NTD60N02RT4
L1
R2
RS1
C2
CS1
12 V_FILTER
12 V_FILTER
RT2 LOCATED NEAR OUTPUT INDUCTORS
VCCP
VSSP
Figure 3. Application Schematic for Three Phases
http://onsemi.com
5
+
CPU GND

5 Page





NCP5381MNR2G arduino
NCP5381
ELECTRICAL CHARACTERISTICS
(0C < TA < 70C; 0C < TJ < 125C; 10.8 V < VCC < 13.2 V; All DAC Codes; CVCC = 0.1 mF, FSW = 400 kHz, unless otherwise stated)
Parameter
Test Conditions
Min Typ Max Units
Modulators (PWM Comparators)
Minimum Pulse Width
Fs = 400 kHz
-- 30 40 ns
Magnitude of the PWM Ramp
-- 1.0 -- V
0% Duty Cycle
COMP voltage when the PWM
--
1.3
-- V
outputs remain LO
100% Duty Cycle
COMP voltage when the PWM
--
2.3
-- V
outputs remain HI
Minimum PWM Linear Duty Cycle
(Note 1)
FS = 400 kHz
-- 90 -- %
PWM Comparator Offset Mismatch
(Note 1)
Phase Angle Error
Propagation Delay (Note 1)
Between any 2 phases,
FS = 400 kHz
Between adjacent phases,
FS = 400 kHz
Ramp/Comp crossing to Gx
high
--
--15
--
--
--
20
40 mV
15
-- ns
Propagation Delay (Note 1)
Ramp/Comp crossing to Gx low
--
20
-- ns
PWM Outputs
Output High Voltage
Sourcing 500 mA
2.9 3.1 3.3 V
Output Low Voltage
Sinking 500 mA
-- 25 100 mV
Rise Time
Fall Time
CL = 20 pF, ΔVo = 0.3 to 2.0 V
--
10
-- ns
CL = 20 pF, ΔVo = Vmax to
--
10
-- ns
0.7 V
Output Impedance – LO State
Resistance to GND (Gx = LO)
--
50
-- Ω
G4 Gate Pin Source Current during
Phase Detect
-- 70 -- mA
Phase Detection Period
-- 50 -- ms
G4 Phase Detect Threshold Voltage
100 -- 500 mV
Gate Driver Enable (DRVON)
Output High Voltage
Sourcing 500 mA
3.7 3.9 4.1 V
Output Low Voltage
Sinking 500 mA
-- 50 200 mV
Rise Time
CL (PCB) = 20 pF,
ΔVo = 10% to 90%
-- 25 -- ns
Fall Time
CL (PCB) = 20 pF,
ΔVo = 10% to 90%
-- 25 -- ns
Internal Pulldown Resistance
VCC < UVLO Threshold
1. Guaranteed by design. Not tested in production.
-- 70 140 kΩ
http://onsemi.com
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