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PDF NCP5314 Data sheet ( Hoja de datos )
| Número de pieza | NCP5314 | |
| Descripción | Two/Three/Four-Phase Buck CPU Controller | |
| Fabricantes | ON Semiconductor | |
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NCP5314
Two/Three/Four−Phase
Buck CPU Controller
The NCP5314 provides full−featured and flexible control for the
latest high−performance CPUs. The IC can be programmed as a two−,
three− or four−phase buck controller, and the per−phase switching
frequency can be as high as 1.2 MHz. Combined with external gate
drivers and power components, the controller implements a compact,
highly integrated multi−phase buck converter.
Enhanced V2™ control inherently compensates for variations in
both line and load, and achieves current sharing between phases. This
control scheme provides the industry’s fastest transient response,
reducing the need for large banks of output capacitors and higher
switching frequency.
The controller meets VR(M)10.x specifications with all the required
functions and protection features.
Features
• Switching Regulator Controller
♦ Programmable 2/3/4 Phase Operation
♦ Lossless Current Sensing
♦ Enhanced V2 Control Method Provides Fast Transient Response
♦ Programmable Up to 1.2 MHz Switching Frequency Per Phase
♦ 0 to 100% Adjustment of Duty Cycle
♦ Programmable Adaptive Voltage Positioning Reduces Output
Capacitor Requirements
♦ Programmable Soft−Start
• Current Sharing
♦ Differential Current Sense Pins for Each Phase
♦ Current Sharing Within 10% Between Phases
• Protection Features
♦ Programmable Pulse−by−Pulse Current Limit for Each Phase
♦ “111110” and “111111” DAC Code Fault
♦ Latching Off Overvoltage Protection
♦ Programmable Latching Overcurrent Protection
♦ Undervoltage Lockout
♦ External Enable Control
♦ Three−State MOSFET Driver Control through Driver−On Signal
• System Power Management
♦ 6−Bit DAC with 0.5% Tolerance Compatible with VR(M)10.x
Specification
♦ Programmable Lower Power Good Threshold
♦ Power Good Output
© Semiconductor Components Industries, LLC, 2004
September, 2004 − Rev. 9
1
http://onsemi.com
MARKING DIAGRAMS
32
1
32 PIN QFN
MN SUFFIX
CASE 485J
(Bottom View)
NCP5314
AWLYYWW
LQFP−32
FTB SUFFIX
CASE 873A
NCP5314
AWLYYWW
32
1
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
Text orientation may vary.
PIN CONNECTIONS
VID2
VID3
VID4
PWRLS
VFFB
SS
PWRGD
DRVON
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
ILIM
ROSC
VCC
GATE1
GATE2
GATE3
GATE4
GND
ORDERING INFORMATION
Device
Package
Shipping†
NCP5314MNR2 32 Pin QFN 2000 Tape & Reel
NCP5314FTR2 LQFP−32 2000 Tape & Reel
†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.
Publication Order Number
NCP5314/D
1 page  
NCP5314
ELECTRICAL CHARACTERISTICS (0°C < TA < 70°C; VCC = 12 V; CGATEx = 100 pF, CCOMP = 0.01 µF,
CSS = 0.1 µF, CVCC = 0.1 µF, RROSC = 32.4 kΩ, V(ILIM) = 1.0 V, DAC Code 010100; unless otherwise noted)
VOLTAGE IDENTIFICATION (VID) (CONTINUED)
Min Typ
Voltage Identification DAC (0 = Connected to GND,
1 = Open or Pull−Up to Internal 3.3 V or External 5 V)
VID Code*
(V)
VOUT No
Load† (V)
Accuracy VID Code (All codes)
Connect VFB to COND,
Measure Comp
−0.5
−
VID4
1
VID3
1
VID2
0
VID1
0
VID0
1
VID5
0
1.2375
1.2114
1.2175
110001
1.2500
1.2239
1.2300
110000
1.2625
1.2363
1.2425
101111
1.2750
1.2487
1.2550
101110
1.2875
1.2612
1.2675
101101
1.3000
1.2736
1.2800
101100
1.3125
1.2860
1.2925
101011
1.3250
1.2985
1.3050
101010
1.3375
1.3109
1.3175
101001
1.3500
1.3234
1.3300
101000
1.3625
1.3358
1.3425
100111
1.3750
1.3482
1.3550
100110
1.3875
1.3607
1.3675
100101
1.4000
1.3731
1.3800
100100
1.4125
1.3855
1.3925
100011
1.4250
1.3980
1.4050
100010
1.4375
1.4104
1.4175
100001
1.4500
1.4229
1.4300
100000
1.4625
1.4353
1.4425
011111
1.4750
1.4477
1.4550
011110
1.4875
1.4602
1.4675
011101
1.5000
1.4726
1.4800
011100
1.5125
1.4850
1.4925
011011
1.5250
1.4975
1.5050
011010
1.5375
1.5099
1.5175
011001
1.5500
1.5224
1.5300
011000
1.5625
1.5348
1.5425
010111
1.5750
1.5472
1.5550
010110
1.5875
1.5597
1.5675
010101
1.6000
1.5721
1.5800
*VID Code is for reference only.
†VOUT No Load is the input to the error amplifier.
Max
+0.5%
1.2236
1.2362
1.2487
1.2613
1.2738
1.2864
1.2990
1.3115
1.3241
1.3367
1.3492
1.3618
1.3743
1.3869
1.3995
1.4120
1.4246
1.4372
1.4497
1.4623
1.4748
1.4874
1.5000
1.5125
1.5251
1.5377
1.5502
1.5628
1.5753
1.5879
Unit
%
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
http://onsemi.com
5
5 Page 
NCP5314
TYPICAL PERFORMANCE CHARACTERISTICS
1.025
1.020
1.015
1.010
1.005
1.000
0
20 40 60 80 100 120
TEMPERATURE (°C)
Figure 9. VROSC versus Temperature
45
44
43
42
41
40
39
38
0 20 40 60 80 100 120
TEMPERATURE (°C)
Figure 11. Soft−Start Charge Current versus
Temperature
3.35
3.30
3.25
3.20
3.15
3.10
3.05
3.00
0
20 40 60 80 100 120
TEMPERATURE (°C)
Figure 13. CS Amp to ILIM Gain versus
Temperature
2.60
2.55
2.50
2.45
2.40
0 20 40 60 80 100 120
TEMPERATURE (°C)
Figure 10. Current Sense to VDRP Gain versus
Temperature
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
0 20 40 60 80 100 120
TEMPERATURE (°C)
Figure 12. Current Sense Amplifier to PWM
Gain versus Temperature
110
105
100
95
90
85
80
0 20 40 60 80 100 120
TEMPERATURE (°C)
Figure 14. Pulse−by−Pulse Current Limit
Threshold versus Temperature
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11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet NCP5314.PDF ] | |
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