NCP5395T
2/3/4-Phase Controller with
On Board Gate Drivers for
CPU Applications
The NCP5395T 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 V
ID
performance.
Features
http://onsemi.com
QFN48, 7x7
CASE 485AJ
1 48
MARKING DIAGRAM
48
1
NCP5395T
AWLYYWWG
A
WL
YY
WW
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
VBST3
TG3
SWN3
DRVON
BST2
TG2
SWN2
BG2
VCCP
SWN1
TG1
BST1
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Meets Intel’s VR11.1 and AMD’s 6 Bit Code Specifications
Enhanced Power Saving Function
48
1
Internal Soft Start
BG1
BG3
G4
PSI
Dual−edge PWM for Fastest Initial Response to Transient Loading
VRRDY
VID0
EN
VID1
High Performance Operational Error Amplifier
CS1N
VID2
AGND
CS1P
VID3
Down−bonded to
Dynamic Reference Injection (Patent #US07057381)
CS2N
VID4
CS2P
Exposed Flag
VID5
DAC Range from 0.5 V to 1.6 V
CS3N
VID6
CS3P
VID7/AMD
DAC Feed Forward Function (Patient Pending)
CS4N
ROSC
CS4P
ILIM
±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
ORDERING INFORMATION
Accurate Current Monitoring (IMON)
Device
Package
Shipping
†
Differential Current Sense Amplifiers for Each Phase
Adaptive Voltage Positioning (AVP)
NCP5395TMNR2G
QFN48
2500/Tape & Reel
(Pb−Free)
Oscillator Frequency Range of 125 kHz
−
1 MHz
Latched Over Voltage Protection (OVP)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
Guaranteed Startup into Pre−Charged Loads
refer to our Tape and Reel Packaging Specifications
Threshold Sensitive Enable Pin for VTT Sensing
Brochure, BRD8011/D.
Power Good Output with Internal Delays
•
Thermal Shutdown Protection
Output Disable Control Turn Off of Both Phase Pair
•
This is a Pb−Free Device
MOSFETs
Applications
•
Thermally Compensated Current Monitoring
•
Desktop Processors
•
Adaptive−Non−Overlap Gate Drive Circuit
©
Semiconductor Components Industries, LLC, 2013
July, 2013
−
Rev. 1
1
IMON
VSP
VSN
DIFFOUT
COMP
VFB
VDRP
VDFB
CSSUM
DAC
12VMON
VCC
Publication Order Number:
NCP5395T/D
NCP5395T
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7/AMD
PSI
DAC
Flexible DAC
Overvoltage
Protection
VCCP
-
+
BST1
+
Phase 1
Gate Driver
with
Adaptive
Non−overlap
TG1
SWN1
BG1
VSN
VSP
-
+
Diff Amp
-
DIFFOUT
1.3 V
Error Amp
VFB
+
-
+
COMP
VDRP
VDFB
CSSUM
CS1P
CS1N
CS2P
CS2N
CS3P
CS3N
CS4P
CS4N
+
-
+
-
+
-
−2/3
+
+
Gain = 6
+
Gain = 6
+
Gain = 6
+
Gain = 6
IMON
DRVON
+
-
Control,
Fault Logic
and
Monitor
Circuits
+
-
+
-
Phase 3
Gate Driver
with
Adaptive
Non−overlap
BST3
TG3
SWN3
BG3
G4
-
Phase 2
Gate Driver
with
Adaptive
Non−overlap
BST2
TG2
SWN2
BG2
+
-
+
-
Oscillator
ROSC
ILIM
EN
VCC
4.25 V
I
Limit
12VMON
+
-
VR_RDY
UVLO
GND (FLAG)
Figure 1. NCP5395T Functional Block Diagram
http://onsemi.com
2
NCP5395T
VTT
PSI#_CPU
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
12V_FILTER
2 1
12V_FILTER
D
G
S
IMON
12
11
10
9
8
7
6
5
4
3
2
1
G
S
48
D
ILIM
ROSC
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
PSI
BG3
G
S
D
PWM3_SENSE_N
PWM3_SENSE_P
VCCP
RFB
CFB 13 IMON
14
VSP
15
16
VSN
DIFFOUT
COMP
VFB
VDRP
VDFB
CSSUM
DAC
12VMON
NCP5395T
48L 7x7 QFN
FLAG = GND
VBST3
TG3 47
SWN3 46
DRVON 45
BST2 44
TG2 43
SWN2 42
12V_FILTER
BG2
41
2
1
D
G
S
VCCP 40
SWN1 39
TG1 38
BST1
37
DRVON
RF
CH
CF
RFB
17
18
RDRP
CDFB
RDFB
RISO
RT
12V_FILTER
RISO
19
20
12V_FILTER
R 21
22
23
CS4P
CS4N
CS3P
CS3N
CS2P
CS2N
CS1P
CS1N
EN
VR_RDY
G4
BG1
24 VCC
25
26
27
28
29
30
31
32
33
34
35
36
C17
D
G
S
G
D
PWM1_SENSE_N
PWM1_SENSE_P
+5.0V
VTT
PWM1_SENSE_P
PWM1_SENSE_N
S
VCCP
ENABLE
PWM3_SENSE_P
PWM3_SENSE_N
Figure 2. Typical 2 Phase Application
http://onsemi.com
3
NCP5395T
VTT
R236
PSI#_CPU
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
12V_FILTER
2 1
12V_FILTER
D
G
S
D
G
S
12
11
10
9
8
7
6
5
4
3
2
1
G
S
D
PWM3_SENSE_N
PWM3_SENSE_P
VCCP
CFB
ILIM
ROSC
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
PSI
BG3
12V_FILTER
48
47
46
45
44
43
42
G
S
D
G
S
D
PWM2_SENSE_N
PWM2_SENSE_P
DRVON
2
1
D
G
S
RFB
13 IMON
14 VSP
15 VSN
VBST3
TG3
SWN3
RF
CH
CF
RFB
16 DIFFOUT
17
18
COMP
VFB
VDRP
NCP5395T
48L 7x7 QFN
FLAG = GND
DRVON
BST2
TG2
SWN2
RDRP 19
CDFB
RDFB
RT
RISO
RISO
12V_FILTER
20 VDFB
R 21
CSSUM
22
DAC
41
BG2
12V_FILTER
VCCP
SWN1
TG1
BST1
40
39
38
37
2
1
12V_FILTER
23 12VMON
24 VCC
CS4P
CS4N
CS3P
CS3N
CS2P
CS2N
CS1P
CS1N
EN
VR_RDY
G4
BG1
D
G
S
25
26
27
28
29
30
31
32
33
34
35
36
C37
VCCP
D
D
G
S
S
PWM1_SENSE_N
PWM1_SENSE_P
+5.0V
VTT
PWM1_SENSE_P
PWM1_SENSE_N
PWM2_SENSE_P
ENABLE
PWM2_SENSE_N
PWM3_SENSE_P
PWM3_SENSE_N
12V_FILTER
G
Figure 3. Typical 3 Phase Application
http://onsemi.com
4
NCP5395T
VTT
PSI#_CPU
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
12V_FILTER
2 1
12V_FILTER
D
G
S
D
G
S
G
S
D
PWM3_SENSE_N
PWM3_SENSE_P
IMON
ILIM
ROSC
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
PSI
BG3
VCCP
12
11
10
9
8
7
6
5
4
3
2
1
12V_FILTER
48
47
46
45 DRVON
2
1
D
G
S
RFB CFB
RFB
RF
CF
CH
13 IMON
14
VSP
15
16
17
18
VSN
VBST3
TG3
SWN3
DIFFOUT
COMP
VFB
VDRP
VDFB
CSSUM
DAC
NCP5395T
48L 7x7 QFN
FLAG = GND
DRVON
BST2 44
43
TG2
SWN2
42
G
41
BG2
12V_FILTER
40
VCCP
SWN1
TG1
39
38
37
2
1
D
G
S
D
S
RDRP 19
CDFB
RDFB
RT
RISO
RISO
12V_FILTER
20
21
22
PWM2_SENSE_N
PWM2_SENSE_P
12V_FILTER
CS4P
CS4N
CS3P
CS3N
CS2P
CS2N
CS1P
CS1N
EN
VR_RDY
G4
BG1
23 12VMON
VCC
24
BST1
D
G
S
VCCP
25
26
27
28
29
30
31
32
33
34
35
36
+5.0V
VTT
PWM4_GATE
PWM1_SENSE_P
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
PWM4_SENSE_N
G
D
G
S
D
S
PWM1_SENSE_N
PWM1_SENSE_P
12V_FILTER
ENABLE
D
VCC BST
4 1 DRH
8
OD 7 SW
3
IN 5 DRL
2 PGND
6
NCP5359
G
S
D
G
S
G
D
PWM4_SENSE_N
S
PWM4_SENSE_P
Figure 4. Typical 4 Phase Application
http://onsemi.com
5
国产芯片交流
京公网安备 11010802033920号
Copyright © 2005-2023 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
