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Número de pieza | NCP5395G | |
Descripción | 2/3/4-Phase Controller | |
Fabricantes | ON Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de NCP5395G (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
No Preview Available ! NCP5395G
2/3/4-Phase Controller with
On Board Gate Drivers for
CPU Applications
The NCP5395G provides up to a four−phase buck solution which
combines differential voltage sensing, differential phase current
sensing, and adaptive voltage positioning to provide accurately
regulated power for both Intel and AMD processors. It also receives
power saving command (PSI) from CPU, and operates in a single
phase emulation diode mode to obtain a high efficiency at light load.
Dual−edge pulse−width modulation (PWM) combined with precise
inductor current sensing provides the fastest initial response to
dynamic load events both in power saving and normal modes.
Dual−edge multiphase modulation reduces the total bulk and ceramic
output capacitance required therefore reducing the system cost to meet
transient regulation specifications.
The on board gate drivers includes adaptive non overlap and power
saving operation. 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 closed−loop transient
response and Dynamic VID performance.
Features
• Meets Intel’s VR11.1 and AMD’s 6 Bit Code Specifications
• Enhanced Power Saving Function
• Internal Soft Start
• Dual−edge PWM for Fastest Initial Response to Transient Loading
• High Performance Operational Error Amplifier
• Dynamic Reference Injection (Patent #US07057381)
• DAC Range from 0.5 V to 1.6 V
• DAC Feed Forward Function (Patient Pending)
• ±0.5% DAC 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
• Accurate Current Monitoring (IMON)
• Differential Current Sense Amplifiers for Each Phase
• Adaptive Voltage Positioning (AVP)
• Oscillator Frequency Range of 125 kHz − 1 MHz
• Latched Over Voltage Protection (OVP)
• Guaranteed Startup into Pre−Charged Loads
• Threshold Sensitive Enable Pin for VTT Sensing
• Power Good Output with Internal Delays
• Output Disable Control Turn Off of Both Phase Pair MOSFETs
• Thermally Compensated Current Monitoring
• Adaptive−Non−Overlap Gate Drive Circuit
• Thermal Shutdown Protection • This is a Pb−Free Device
http://onsemi.com
QFN48, 7x7
CASE 485AJ
1 48
MARKING DIAGRAM
48
1
NCP5395G
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
148
BPGS3I
VID0
VVVIIIDDD321
VID7/VVVAIIIMDDDD654
ROSC
ILIM
AGND
Down−bonded to
Exposed Flag
EVGBNRG4R1 DY
CCCSSS211NPN
CS2P
CCCCSSSS4433PNPN
ORDERING INFORMATION
Device
Package
Shipping†
NCP5395GMNR2G QFN48 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 Specifications
Brochure, BRD8011/D.
Applications
• Graphic Cards, Desktop Processors
© Semiconductor Components Industries, LLC, 2012
February, 2012 − Rev. 2
1
Publication Order Number:
NCP5395G/D
1 page NCP5395G
VTT
PSI#_CPU
VVVVVVVVIIIIIIIIDDDDDDDD07624351
IMON
12V_FILTER
2 1 12V_FILTER
D
G
S
DD
GG
SS
PWM3_SENSE_N
PWM3_SENSE_P
VCCP
RFB CFB
13
14
IMON
VSP
VBST3 48
TG3 47
15 VSN
SWN3 46
RF
RFB
16 DIFFOUT
17 COMP
NCP5395G
DRVON 45 DRVON
BST2 44
CF CH
18 VFB
RDRP19 VDRP
48L 7x7 QFN
FLAG = GND
TG2 43
SWN2 42
CDFB
RDFB
20 VDFB
21 CSSUM
BG2
41
12V_FILTER
VCCP 40
RT
RISO RISO
12V_FILTER
22 DAC
23 12VMON
24 VCC
SWN1 39
TG1 38
BST1 37
21
12V_FILTER
D
G
S
DD
G G PWM2_SENSE_N
S S PWM2_SENSE_P
21
12V_FILTER
D
G
S
VCCP
+5.0V
VTT
PWM4_GATE
PWM1_SENSE_P
D
G
S
D PWM1_SENSE_N
G
S
PWM1_SENSE_P
ENABLE
PWM1_SENSE_N
12V_FILTER
PWM2_SENSE_P
2
1
PWM2_SENSE_N
PWM3_SENSE_P
PWM3_SENSE_N
DRVON
PWM4_GATE
PWM4_SENSE_P
VCC BST
OD
IN
4
3
2
1
8
7
5
6
DRH
SW
DRL
PGND
NCP5359
PWM4_SENSE_N
12V_FILTER
D
G
S
DD
GG
SS
PWM4_SENSE_N
PWM4_SENSE_P
Figure 4. Typical 4 Phase Application
http://onsemi.com
5
5 Page NCP5395G
ELECTRICAL CHARACTERISTICS
0°C < TA < 70°C; 0°C < TJ < 125°C; 4.75 < VCC < 5.25 V; All DAC Codes; CVCC = 0.1 mF unless otherwise noted.
Parameter
Test Conditions
Min Typ
VR_RDY (Power Good) OUTPUT
VR_RDY Rising Delay
VCore Increasing
− 250
VR_RDY Falling Delay
VCore Decreasing
− 5.0
PWM G4 OUTPUT
Output High Voltage
Sourcing 500 mA
3.0 −
Mid Output Voltage
1.4 1.5
Output Low Voltage
Sinking 500 mA
−−
Delay + Rise Time (Note 3)
Delay + Fall Time (Note 3)
Tri−State Output Leakage (Note 3)
CL (PCB) = 50 pF,
DVo = VCC to GND
CL (PCB) = 50 pF,
DVo = GND to VCC
Gx = 2.5 V, x = 1−4
− 10
− 10
−−
Output Impedance −
HI or LO State
Max Resistance
GND (LO)
to
VCC
(HI)
or
− 75
Minimum VCC for Valid PWM Output Level
PWM 4 2/3/4 Phase Detection
−−
2 Phase Mode
4 Phase Mode
Note Gate 4 tied to VCC
Note Gate Driver will pull to 1.5 V
3.2
1.2
−
−
3 Phase Mode
Note Gate 4 tied to GND
0−
DIGITAL SOFT−START
Soft−Start Ramp Time
DAC = 0 to DAC = 1.1 V
1.0 −
VR11 Vboot time
VID7/VR11/AMD/LEGACY INPUT
Not used in Legacy Startup
400 500
VID Threshold
450 600
VR11 Input Bias Current
−100
−
Delay Before Latching VID Change (VID Deskewing)
(Note 3)
Measured from the Edge of the 1st
VID Change
200
−
AMD Upper Threshold
AMD Lower Threshold
Note: When above this threshold
the controller will ramp directly to
VID without stopping at Vboot
−
3.33
−
−
Max Unit
− ms
− ms
−V
1.6 V
0.7 V
− ns
− ns
1.5 mA
150 W
2.0 V
VCC
V
2.8 V
0.8 V
1.3 ms
600 ms
770 mV
100 nA
300 ns
4.8 V
−V
http://onsemi.com
11
11 Page |
Páginas | Total 25 Páginas | |
PDF Descargar | [ Datasheet NCP5395G.PDF ] |
Número de pieza | Descripción | Fabricantes |
NCP5395 | CPU Applications | ON Semiconductor |
NCP5395G | 2/3/4-Phase Controller | ON Semiconductor |
NCP5395T | 2/3/4-Phase Controller with On Board Gate Drivers | ON Semiconductor |
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