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Número de pieza | NCP5387 | |
Descripción | 2/3/4 Phase Controller | |
Fabricantes | ON Semiconductor | |
Logotipo | ||
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No Preview Available ! NCP5387
2/3/4 Phase Controller for
CPU Applications
The NCP5387 is a two−, three−, or four−phase buck controller
which combines differential voltage and current sensing, and
adaptive voltage positioning to power both AMD and Intel
processors. Dual−edge pulse−width modulation (PWM) combined
with inductor current sensing reduces system cost by providing the
fastest initial response to transient load events. Dual−edge
multi−phase modulation reduces total bulk and ceramic output
capacitance required to satisfy transient load−line regulation.
A high performance operational error amplifier is provided, which
allows easy compensation of the system. The proprietary method of
Dynamic Reference Injection (Patented) makes the error amplifier
compensation virtually independent of the system response to VID
changes, eliminating tradeoffs between overshoot and dynamic VID
performance.
Features
• Meets Intel’s VR 10.0 and 11.0 and AMD Specifications
• Dual−Edge PWM for Fastest Initial Response to Transient Loading
• High Performance Operational Error Amplifier
• Supports both VR11 and Legacy Soft−Start Modes
• Dynamic Reference Injection (Patented)
• DAC Range from 0.5 V to 1.6 V
• "0.5% System Voltage Accuracy from 1.0 V to 1.6 V
• 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)
• Frequency Range: 100 kHz – 1.0 MHz
• OVP with Resettable, 8 Event Delayed Latch
• Threshold Sensitive Enable Pin for VTT Sensing
• Power Good Output with Internal Delays
• Programmable Soft−Start Time
• This is a Pb−Free Device*
Applications
• Desktop Processors
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MARKING
DIAGRAM
1 40
40 PIN QFN, 6x6
MN SUFFIX
CASE 488AR
1
NCP5387
AAWLYYWW
G
NCP5387 = Specific Device Code
AA = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G/G = Pb−Free Package
*Pin 41 is the thermal pad on the bottom of the device.
ORDERING INFORMATION
Device
Package
Shipping†
NCP5387MNR2G* QFN−40 2500 / Tape & Reel
(Pb−Free)
*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.
*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, 2007
April, 2007 − Rev. 3
1
Publication Order Number:
NCP5387/D
1 page NCP5387
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
VID_SEL
VR_EN
VR_RDY
VR_HOT
VR_FAN
VTT
680 W PULLUPS
+5 V
RVCC
CVCC1
41
36
2 VCC
VID0
GND
3
VID1
12VMON 35
4
VID2
5
VID3
34 RNTC1
VREF
6
VID4
7
38
NTC
VID5
8
VID6
9
30
G1
CS1 22
VID7
10
CS1N 21
VR10/11
1
EN
37
VR_RDY
40
VR_HOT
39
VR_FAN
16
VS−
15
VS+
31
G2
CS2 24
CS2N 23
32
G3
RISO1 RT2 RISO2
CS3 26
NCP5387 CS3N 25
CFB1
RFB1
RFB
RDRP
CD1
RD1
CF RF
CH
RVFB
17
DIFFOUT
19 VFB
33
G4
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
C4
NTD60N02RT4
L1
R2
RS1
C2
CS1
12 V_FILTER
RLIM2
VCCP
VSSP
RT2 LOCATED NEAR OUTPUT INDUCTORS
Figure 3. Application Schematic for Two Phases
+
CPU GND
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5
5 Page NCP5387
ELECTRICAL CHARACTERISTICS
(Unless otherwise stated: 0°C < TA < 85°C; 4.75 V < VCC < 5.25 V; All DAC Codes; CVCC = 0.1 mF)
Parameter
Test Conditions
Min Typ Max Units
Modulators (PWM Comparators)
Minimum Pulse Width (Note 3)
Fs = 800 kHz
− 30 40 ns
Propagation Delay (Note 3)
− 20 − ns
Magnitude of the PWM Ramp
− 1.0 − V
0% Duty Cycle
COMP voltage when the PWM outputs
remain LOW
− 1.3 − V
100% Duty Cycle
COMP voltage when the PWM outputs
remain HIGH
− 2.3 − V
PWM Linear Duty Cycle (Note 3)
− 90 − %
PWM Phase Angle Error
−15 −
15 °
VR_RDY (Power Good) Output
VR_RDY Saturation Voltage
VR_RDY Rise Time
IVR_RDY = 10 mA
External pullup of 680 kW to 1.25 V, CL =
45 pF,
DVo = 10% to 90%
− − 0.4 V
− − 150 ns
VR_RDY High – Output Leakage Current
VR_RDY = 5.0 V
− − 1.0 mA
VR_RDY Upper Threshold Voltage
VCORE increasing, DAC = 1.3 V
− 300 − mV
below
DAC
VR_RDY Lower Threshold Voltage
VCORE decreasing, DAC = 1.3 V
− 350 − mV
below
DAC
VR_RDY Rising Delay
VCORE increasing
− − 3 ms
VR_RDY Falling Delay
VCORE decreasing
− − 250 ns
PWM Outputs
Output High Voltage
Output Low Voltage
Sourcing 500 mA
Sinking 500 mA
3.0
−
VCC
V
− − 0.15 V
Rise Time
Fall Time
Tri−State Output Leakage
CL = 20 pF, DVo = 0.3 to 2.0 V
CL = 20 pF, DVo = Vmax to 0.7 V
Gx = 2.5 V, x = 1 − 4
− − 20 ns
− − 20 ns
− − 1.5 mA
Output Impedance − Sourcing
Output Impedance − Sinking
Max Resistance to VCC
Max Resistance to GND
− 320 − W
− 140 − W
2/3/4 Phase Detection
Gate Pin Source Current
− 84 − mA
Gate Pin Threshold Voltage
− 225 − mV
Phase Detect Timer
− 20 − ms
DRVON
Output High Voltage
Output Low Voltage
Sourcing 500 mA
Sinking 500 mA
3.0
−
VCC
V
− − 0.7 mV
Rise Time
Fall Time
Internal Pulldown Resistance
CL (PCB) = 20 pF, DVo = 10% to 90%
CL = 20 pF, DVo = 10% to 90%
− 24 30 ns
− 11 20 ns
− 70 − kW
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11
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet NCP5387.PDF ] |
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