an1552

Application Note AN1552
Author: Jia Wei
ISL62881CCPUEVAL2Z Evaluation Board User Guide
Hardware Description
Interface Connections
The ISL62881CCPUEVAL2Z evaluation board
demonstrates the performance of the ISL62881C
single-phase synchronous-buck PWM VCORE controller
implementing Intel IMVP-6.5 protocol. The ISL62881C
features Intersil's Robust Ripple Regulator (R3™)
technology. An on-board dynamic-load generator is
included for evaluating the transient-load response. It
applies a 300µs pulse of approximately 0.2Ω load across
VO and PGND.
• VIN: Input Voltage to the Power Stage
- J5: VIN Positive Power Input
- TP31: VIN Positive Voltage Sense
- J6: VIN Return Power Input
- TP32: VIN Return Voltage Sense
Contents of this document include:
• VO: Regulated Output Voltage
- J12: VO Positive Power Output
- J14: VO Return Power Output
• +5V: +5V Input Voltage
- TP29: +5V Positive Input
- TP30: +5V Return Input
• Design Criteria
• Recommended Test Equipment
• Interface Connections
• +12V: Input Voltage for the Dynamic-load Generator
- TP3: 12V Positive Input
- TP2: 12V Return Input
• Switch Descriptions
• DIP Switch Descriptions
• Jumper Descriptions
• Evaluation Board Documentation
- Bill of materials
- Schematic
- Silk-screen plots
- Board layer plots
TP18 TP14
RTN
_
J6
PGND
VSEN
on
S3
off
1
D1
DPRSLPVR
Test Set-Up
• Test Point Descriptions
0
S1
0 U2 1
VID0
VID1
VID2
VID3
VID4
VID5
VID6
Vin
+
J5
VIN
TABLE 1. DC/DC DESIGN CRITERIA
PARAMETER
VALUE
UNITS
VIN
4.5 to 20
VDC
VO
0 to 1.5
VDC
J16 TP37
+3.3V
TP29
+5V
Full-load
PWM Frequency
26
ADC
300
kHz
Recommended Equipment
• (Qty. 1) Adjustable 25V, 10A Power Supply
• (Qty. 1) Fixed 5V, 100mA Power Supply
• (Qty. 1) Fixed 12V, 100mA Power Supply
TP30
+
_ 5V
PGND
ISL62881CCPUEVAL2Z
TP3
J12
VCORE
TP2
J14
on
S2
off
PGND
J10
VCORE
FIGURE 1. TEST SET-UP
• (Qty. 1) Adjustable Constant Current Electronic Load
Switch Descriptions
• (Qty. 1) Digital Voltmeter
• S3: Enable
- OFF: Short the VR_ON pin to GND (disable PWM)
- ON: Allow the VR_ON pin to pull-up to +5V
(enable PWM)
• (Qty. 1) Four-Channel Oscilloscope
• S2: Dynamic Load
- OFF: On-board dynamic load disabled
- ON: On-board dynamic load enabled
March 24, 2010
AN1552.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Application Note 1552
DIP-Switch Descriptions
Test Point Descriptions (Continued)
• S1: Set the control signals
- S1.1: Set the DPRSLPVR signal
- S1.2: Set the DPRSTP# signal
TEST POINT
• U2: Set the VID
Jumper Descriptions
• J16: If installed, the +5V rail supplies the +3.3V rail
to the auxiliary circuit on the board. DO NOT APPLY
+3.3V TO TP37/TP30 WHILE J16 IS
INSTALLED! IT’LL SHORT THE +5V AND THE
+3.3V POWER SUPPLIES. When measuring board
efficiency, uninstall J16 and apply +3.3V to
TP37/TP30.
Test Point Descriptions
TEST POINT
J7
DESCRIPTION
Scope-probe socket for measuring
PHASE1.
DESCRIPTION
TP12
Input side of the compensator.
TP13
Monitor the PGOOD pin.
TP14
Monitor the VSEN pin.
TP16
Monitor the CLK_EN# pin.
TP17
Monitor the VR_ON pin.
TP18
Monitor the RTN pin.
TP19
Monitor the positive side of C82.
TP20
Monitor the negative side of C82.
TP21
Monitor the VID6 pin.
TP22
Monitor the VID5 pin.
TP23
Monitor the VID4 pin.
TP24
Monitor the VID3 pin.
TP25
Monitor the VID2 pin.
J10
Scope-probe socket for measuring VO.
TP26
Monitor the VID1 pin.
J15
Scope-probe socket for measuring the
current of the on-board transient-load
emulator.
TP27
Monitor the VID0 pin.
TP28
Monitor the IMON pin.
TP1
Monitor the on-board 1.2V power supply.
TP29
+5V power supply positive input.
TP2
+12V power supply return input.
TP30
+5V power supply return input.
TP3
+12V power supply positive input.
TP31
VIN positive voltage sense.
TP4
Monitor the COMP pin.
TP32
VIN return voltage sense.
TP5
Monitor the VW pin.
TP33
Monitor MOSFET Q3 gate signal.
TP6
Monitor the FB pin.
TP37
+3.3V power supply positive input.
TP7
Monitor the DPRSLPVR pin.
Bill of Materials
QTY
REFERENCE
VALUE
1
PCB
1
C1
1
C11
1
C12
1
C13
0
C14, C15, C19, C39,
C44, C81, C86
DNP
5
C16, C2, C22, C23,
C79
1µF
3
C17, C18, C30
3
C20, C45, C58
1
C21
1
C25
DESCRIPTION
MFG.
PART NUMBER
PACKAGE
Multilayer Cap, 16V, 10%
GENERIC
H1045-00103-16V10
SM0603
1000pF Multilayer Cap, 16V, 10%
GENERIC
H1045-00102-16V10
SM0603
Multilayer Cap, 16V, 10%
GENERIC
H1045-00331-16V10
SM0603
1000pF Multilayer Cap, 16V, 10%
GENERIC
H1045-00102-16V10
SM0603
Multilayer Cap, 16V, 20%
GENERIC
H1045-00105-16V20
SM0603
0.22µF
Multilayer Cap, 25V, 10%
GENERIC
H1045-00224-25V10
SM0603
0.1µF
Multilayer Cap, 16V, 10%
GENERIC
H1045-00104-16V10
SM0603
0.047µF Multilayer Cap, 16V, 10%
GENERIC
H1045-00473-16V10
SM0603
SANYO
25SP56M
CASE-CC
ISL62881CPUEVAL2ZREVD
0.01µF
330pF
56µF
2
Radial SP Series Cap, 25V,
20%
AN1552.0
March 24, 2010
Application Note 1552
Bill of Materials (Continued)
QTY
REFERENCE
VALUE
3
C27, C33, C80
10µF
1
C3
2
C52, C57
1
C4
30
C40-C43, C47-C50,
C53-C56, C59, C75,
C78
DESCRIPTION
MFG.
PART NUMBER
Multilayer Cap, 25V, 20%
GENERIC
H1065-00106-25V20
SM1206
390pF
Multilayer Cap, 16V, 10%
GENERIC
H1045-00391-16V10
SM0603
330µF
SPCAP, 2V, 4MW
PANASONIC
EEXSX0D331E4
GENERIC
H1045-00102-16V10
SM0603
TAIYO
JMK212BJ106MG-T
SM0805
MURATA
GRM21BR60J106ME19
Kyocera
CM21X5R106M06AT
TDK
C2012X5R0J106MT009N
Multilayer Cap, 16V, 10%
GENERIC
H1045-00563-16V10
SM0603
0.047µF Multilayer Cap, 16V, 10%
GENERIC
H1045-00820-16V10
SM0603
1000pF Multilayer Cap, 16V, 10%
10µF
56pF
Multilayer Cap, 6.3V, 20%
PACKAGE
1
C6
1
C82
1
D1
3mmx2.5mm Surface Mount Lumex
Red/Green LED
SSL-LXA3025IGC
LED_3x2_5MM
1
J10
Scope Probe Test POint PCB
Mount
TEKTRONIX
131-4353-00
TEK131-4353-00
0
J15, J7
2
J12, J14
Wire Connector Lug
BURNDY
KPA8CTP
KPA8CTP
1
J16
2 Pin Header 2.54mm
(0.100) Pitch
BERG?FCI
69190-202
CONN2
1
J5
Binding Post Red
JOHNSONCOMP
111-0702-001
111-07XX-001
1
J6
Binding Post Black
JOHNSONCOMP
111-0703-001
111-07XX-001
1
L1
0.45µH Inductor, Inductance 20%,
DCR 7%
NEC-TOKIN
MPCG1040LR45
6.5mm x 6.5mm
2
Q1, Q14
N-Channel EMF Effect
Transistor (Pb-Free)
FAIRCHILD
2N7002-7-F
SOT23
1
Q15
N-Channel 30V (D-S)
MOSFET
VISHAY
SUD50N03-07
TO-252AA
2
Q2, Q8
N-Channel Power MOSFET
IR
IRF7821
PWRPAKSO8
2
Q3, Q9
N-Channel Power MOSFET
IR
IRF7832
PWRPAKSO8
1
R1
49.9
Thick Film Chip Resistor, 1% GENERIC
H2511-049R9-1/16W1
SM0603
1
R10
715
Thick Film Chip Resistor, 1% GENERIC
H2511-07150-1/16W1
SM0603
1
R102
49.9k
Thick Film Chip Resistor, 1% GENERIC
H2511-04992-1/16W1
SM0603
2
R104, R105
249
Thick Film Chip Resistor, 1% GENERIC
H2511-02490-1/16W1
SM0603
1
R106
0.2
Thick Film Chip Resistor, 1% GENERIC
H2515-00R20-1W1-T
SM2512
0
R109, R110, R111,
R113, R114, R121,
R2, R26, R31, R4,
R44, R68, R77, R93,
R99, R107, R117
DNP
1
R11
1.33k
Thick Film Chip Resistor, 1% GENERIC
H2511-01331-1/16W1
SM0603
3
R13, R15, R103
499
Thick Film Chip Resistor, 1% GENERIC
H2511-04990-1/16W1
SM0603
1
R115
0
Thick Film Chip Resistor, 1% GENERIC
H2511-00R00-1/16W1
SM0603
1
R16
147k
Thick Film Chip Resistor, 1% GENERIC
H2511-01473-1/16W1
SM0603
DNP
3
AN1552.0
March 24, 2010
Application Note 1552
Bill of Materials (Continued)
QTY
REFERENCE
VALUE
DESCRIPTION
MFG.
2
R17, R18
10
Thick Film Chip Resistor, 1% GENERIC
H2511-00100-1/16W1
SM0603
2
R19, R23
1.91k
Thick Film Chip Resistor, 1% GENERIC
H2511-01911-1/16W1
SM0603
17
R20, R22, R24, R25,
R27, R29, R32, R33,
R34, R35, R40, R52,
R56, R62, R87,
R112, R116
0
Thick Film Chip Resistor, 1% GENERIC
H2511-00R00-1/16W1
SM0603
9
R21, R28, R36, R39,
R43, R45, R46, R49,
R51
10k
Thick Film Chip Resistor, 1% GENERIC
H2511-01002-1/16W1
SM0603
1
R30
909
Thick Film Chip Resistor, 1% GENERIC
H2511-09090-1/16W1
SM0603
1
R37
1
Thick Film Chip Resistor, 1% GENERIC
H2511-01R00-1/16W1
SM0603
1
R38
11k
Thick Film Chip Resistor, 1% GENERIC
H2511-01102-1/16W1
SM0603
1
R41
2.61k
Thick Film Chip Resistor, 1% GENERIC
H2511-02611-1/16W1
SM0603
1
R42
10k
NTC
Thermistor, 10k NTC
ERT-J1VR103J
SM0603
2
R5, R80
100
Thick Film Chip Resistor, 1% GENERIC
H2511-01000-1/16W1
SM0603
1
R50
7.68k
Thick Film Chip Resistor, 1% GENERIC
H2511-07681-1/16W1
SM0603
2
R59, R96
0
1
R6
9.09k
Thick Film Chip Resistor, 1% GENERIC
H2511-09091-1/16W1
SM0603
1
R63
1.82k
Thick Film Chip Resistor, 1% GENERIC
H2511-01821-1/16W1
SM0805
1
R7
226k
Thick Film Chip Resistor, 1% GENERIC
H2511-02263-1/16W1
SM0603
1
S1
SD Series Low Profile Dip
Switch
C&K
SD02H0SK
DIPSWSMT-4
2
S2, S3
SPDT On-None-On SMT
Ultraminiature Toggle
Switch
C&K
GT11MSCKE
GT13MSCKE
1
S4
Schottky Barrier (Double)
Diode
DIODES
BAT54S
SOT23
4
TP2, TP3, TP29,
TP30
Test Point Turret 0.15 Pad
0.1 Thole
KEYSTONE
1514-2
TP-150C100P
28
TP1, TP4-TP7,
TP12-TP14,
TP16-TP28,
TP31-TP33, TP37,
TP40
Miniature White Test Point
0.100 Pad 0.040 Thole
KEYSTONE
5002
MTP500X
0
TP38, TP39, TP9
1
U1
Low Volt Precision
Adjustable Shunt Regulator
ON-SEMI
TLV431ASNT1
TSOP-5
1
U2
SD Series Low Profile Dip
Switch
C&K
SD07H0SK
DIPSWSMT-14
1
U4
rPGA989 CPU Socket
FOXCONN
1
U5
100V/2A Peak High
Frequency Half Bridge
Driver (Pb-Free)
INTERSIL
HIP2100IBZ
SOIC8_150_50
1
U6
IMVP-6 PWM Controller
INTERSIL
ISL62881CHRTZ
QFN-28
PANASONIC
PART NUMBER
PACKAGE
Solder Joint (Heavy Duty)
DNP
4
AN1552.0
March 24, 2010
VID0
11
5
10
6
9
7
8
14
100
VID0
VID1
VID2
VID3
VID4
VID5
VID6
13
12
11
10
9
8
MST7_SPST
10K
10K
R51
10K
R49
10K
R46
R80
VID1
TP27
VID2
TP26
VID3
TP25
VID4
10K
R45
10K
R43
10K
R39
12
4
UGATE
16
15
PHASE
UGATE
OUT
BOOT
OUT
DNP
J16
1 12 2
TP29
1UF
5V
PGND
C21
R50
TP28
IMON/DPRSTP# NOTE:
IN
VSSSENSE
C20
R44
R41
10K 2.61K
NTC
-----> R42
11K
R38
3.3V
TP30
7.68K
TP19
DNP
R35 0.22UF
C19
0
C18
+5V
OUT
ROUTE
GOING
ROUTE
GOING
IN
VSUM+
IN
VSUM-
PLACE NEAR L1
AN1552.0
March 24, 2010
TP20
R109
0.047UF
C82
TP18
C81
DNP
R30
909
IN
0
VSUM+
0.22UF
1UF
C17
0
+5V
VIN
IN
R40
1
RTN
1000PF
R37
VSUM-
0
1UF
C2
PHASE
VSEN
EP
17
OUT
TP37
UGATE1
TO THE
LGATE1
TO THE
TRACE IN PARALLEL WITH THE PHASE1 TRACE
SOURCE OF Q1 AND Q2.
TRACE IN PARALLEL WITH THE VSSP TRACE
SOURCE OF Q3 AND Q4.
0.1UF
ISL62881C
FB
LGATE
18
C23
VSSP
19
DNP
COMP
DNP
C13
3
R52
1UF
VCCP
LGATE
20
0.047UF
U6
VW
DNP
IN
13
21
C22
RBIAS
C16
VSSSENSE
TP24
VID5
0
R36
DNP
C86
VID0
R26
C12
330PF
TP23
TP22
TP21
VID0
VID6
IN
R33
VID1 IN
0 R34
IN
VID6/VDPRSLP
TP40
IN
IN
IN
VR_ON
VID6
VID5
VID4
VID3
VID2
PGOOD
C15
10
IN
2
+3.3V
VID1
R20
VCCSENSE
10
7
0
8
9
10
11
12
13
14
R17
R18
6
R116
CLK_EN#
TP14
29
330PF
IN
C14
VCORE
1.33K
7
0
<VSEN>
R11
R7
390PF 226K
6
R22
TP12
715 1000PF
56PF
5
14
28
27
26
25
24
23
22
4
DPRSLPVR
DNP
3
147K
VSEN
C11
4
RTN
ISUMISUM+
VDD
VIN
IMON
BOOT
2
1000PF
R10
FB
DNP
R121
D1
4 3
2
VW
TP5
C4
COMP
R6
9.09K
TP4
R4
DNP DNP
C3
2
R16
5
C6
IN
0
IMON/DPRSTP#
R114
DPRSLPVR
DNP
TP16
1
R115
3
"1"
U2
1
CLK_EN#
1
0
TP6
C83 R110
Q1
"0"
1
2
1.91K
1.91K
R23
R19
499
TP13
PGOOD
VCCP1.2V
Application Note 1552
2N7002
VID6
VID5
VID4
VID3
VID2
TP17
VR_ON
DPRSTP#
TP9
10K
DNP
+3.3V
GRN
10K
R24
0 R25
0 R27
0 R29
0 R32
P2
R21
R117
3
R13
C1
REF
5
R2
DNP
-
V
TP7
EAD102L
2
1 S3
ON
10K
R31
DPRSTP#
3
+
1.24
2
3 499
1 R15
4
3
R28
100
TLV431ASNT1
U1
49.9
0.01UF
5
+3.3V
OFF P1
"0" S1 "1"
DPRSLPVR
1
4
R5
R1
OUT
RED
TP1
VCCP1.2V
DPRSLPVR
ISL62881CCPUEVAL2Z Schematics
FIGURE 2. ISL62881CCPUEVAL2Z SCHEMATIC, 1 OF 5
TITLE:
ISL62881/4/5
ENGINEER:
CPU EVALULATION BOARD
CONTROLLER
JIA WEI
DATE:
JUNE 2009
PAGE:
1 OF 5
ISL62881CCPUEVAL2Z Schematics (Continued)
1
DNP
1
2
C44
2
C57
330UF
1
330UF
2
2
DNP
C75
C71
10UF
C67
10UF
C63
10UF
10UF
C59
DNP
C53
10UF
C47
C40
->
C76
DNP
DNP
C77
C78
C74
DNP
C72
10UF
10UF
C73
DNP
C70
C69
DNP
C68
10UF
10UF
C64
C65
10UF
J14
3
4 J10
1
CLOSE TO THE PROBE SOCKET
CENTERED IN THE CPU SOCKET
FIGURE 3. ISL62881CCPUEVAL2Z SCHEMATIC, 2 OF 5
10UF
C66
OUT
0.1UF
C58
C45
1
2
------
----------
-->
0.1UF
VCORE
10UF
10UF
10UF
C62
C61
DNP
C60
10UF
C54
C55
10UF
C56
10UF
10UF
10UF
10UF
C48
C49
C50
C41
10UF
C42
10UF
C43
10UF
R99
DNP
DNP
0
R93
R77
R87
VSUM-
OUT
OUT
VSUM+
R63
4 J7
PHASE1
R96
0
DNP
0
R68
R62
0
1
2
L1
0.45UH
1.1MOHM
DNP
3
2
1
5
4
__
PADS FOR SMALL INDUCTOR
R59
IRF7832
Q9
3
TP33
LGATE
__ PADS FOR BIG INDUCTOR
1.82K
0.22UF
4
3
2
1
0
IRF7832
Q3
IRF7821
4 OPENINGS WITH
10MIL CLEARANCE
10UF
5
5
3
2
1
5
LGATE
C30
3
2
1
IN
R56
1
Application Note 1552
BOOT
Q8
-->
IN
4
-->
UGATE
PHASE
IRF7821
Q2
-->
IN
IN
10UF
10UF
C33
C27
2
J6
----->
VIN
PGND
----->
TP32
C25
6
TP31
1
J5
C52
C39
OUT
56UF
VIN
DNP
1
J12
AN1552.0
March 24, 2010
AT17
AT20
AT35
AP34
A9
A23
A27
A29
A35
B1
B2
B4
B6
B8
B11
B13
B17
B18
B21
B25
B31
B34
C16
C19
C20
C22
C24
C28
C29
C32
C34
D3
D6
D9
D26
D30
D33
E2
E5
E8
E11
E13
E18
E21
E24
E29
E32
E35
F16
F19
F22
F25
F27
F30
G3
G6
G9
G20
G31
G34
H2
H5
H8
H11
H13
H15
H18
H28
H26
H24
H22
H32
H35
J19
J21
J30
J32
K3
K6
K9
K27
K30
K33
K34
L2
L5
L8
L29
L32
L35
M10
N6
N26
N27
N28
N29
N30
N31
N32
N33
N34
N35
P2
P4
P8
R10
T6
T26
T27
T28
T29
T30
T31
T32
T33
T34
T35
U2
U4
U8
V10
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
RPGA989
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
AT1
AR34
AR31
AR28
AR26
AR24
AR23
AR20
AR17
AR15
AR12
AR9
AR6
AR3
AP20
AP17
AP13
AP10
AP7
AP4
AP2
AN34
AN23
AN20
AN17
AM31
AM28
AM26
AM20
AM17
AM14
AM11
AM8
AM5
AM2
AL34
AL23
AL20
AL17
AL12
AL9
AL6
AL3
AK31
AK28
AK25
AK20
AK17
AJ23
AJ20
AJ17
AJ14
AJ11
AJ8
AJ5
AJ2
AH35
AH34
AH33
AH32
AH31
AH30
AH29
AH28
AH27
AH26
AH20
AH17
AH13
AH9
AH6
AH3
AG10
AF8
AF4
AF2
AE35
AE34
AE33
AE32
AE31
AE30
AE29
AE28
AE27
AE26
AE6
AD10
AC8
AC4
AC2
AB35
AB34
AB33
AB32
AB31
AB30
AB29
AB28
AB27
AB26
AB6
AA10
Y8
Y4
Y2
W35
W34
W33
W32
W31
W30
W29
W28
W27
W26
W6
AT21
AT19
AT18
AT16
AR21
AR19
AR18
AR16
AP21
AP19
AP18
AP16
AN21
AN19
AN18
AN16
AM21
AM19
AM18
AM16
AL21
AL19
AL18
AL16
AK21
AK19
AK18
AK16
AJ21
AJ19
AJ18
AJ16
AH21
AH19
AH18
AH16
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT1
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VTT2
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
VCCDDR_DQ
AJ1
AE7
AF1
AC1
AE4
AB4
Y1
W7
W4
U1
T7
T4
P1
N7
N4
L1
H1
K26
J27
J26
J25
J24
J23
J22
J20
J18
H27
H25
H21
H20
H19
G28
G27
G26
F26
E26
E25
AH14
AH12
AH11
AH10
AF10
AE10
AC10
AB10
Y10
W10
U10
T10
P10
N10
L10
K10
J14
J13
J12
J11
H14
H12
G14
G13
G12
G11
F14
F13
F12
F11
E14
E12
D14
D13
D12
D11
C14
C13
C12
C11
B14
B12
A14
A13
A12
A11
AG35
AG34
AG33
AG32
AG31
AG30
AG29
AG28
AG27
AG26
AF35
AF34
AF33
AF32
AF31
AF30
AF29
VCCDDR_DQ
AB7
DFGT_DPRSLPVR
DFGT_VR_EN
DFGT_VID0
DFGT_VID1
DFGT_VID2
DFGT_VID3
DFGT_VID4
DFGT_VID5
DFGT_VID6
DFGT_IMON
VSSAXG_SENSE
VCCAXG_SENSE
VSS_SENSE
VCC_SENSE
ISENSE_DP
VID0
VID1
VID2
VID3
VID4
VID5
VID6
DPRSLPVR
PSI_B
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
VCCAXG
RPGA989
U4
VCCP1.2V
IN
TP38
VTT1
R111
DNP
C84
R113
DNP
DNP
C85
R112
DNP
0
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
IN
TITLE:
ISL62881/4/5
ENGINEER:
AN1552.0
March 24, 2010
FIGURE 4. ISL62881CCPUEVAL2Z SCHEMATIC, 3 OF 5
JIA WEI
AC32
AC33
AC34
AC35
AD26
AD27
AD28
AD29
AD30
AD31
AD32
AD33
AD34
AD35
AF26
AF27
AF28
Y27
VCCP1.2V
TP39
VTT2
CPU EVALUATION BOARD
CPU SOCKET
Application Note 1552
U4
7
./MODELS
U33
R29
R30
R31
R32
R33
R34
V32
V33
V34
R35
U26
U27
U28
U29
U30
U34
U35
V26
V27
V28
AA28
AA29
V35
Y26
AA30
AA31
Y28
Y29
AA32
AA33
Y30
Y31
AA34
AA35
Y32
Y33
AC26
AC27
Y34
Y35
AC28
AC29
AA26
AA27
AC30
AC31
AT25
AR25
AM22
AP22
AN22
AP23
AM23
AP24
AN24
AM24
AT22
AR22
AJ35 VSSSENSE
OUT
AJ34 VCCSENSE
IMON OUT
AN35
IN
VID0 OUT
AK35
VID1
AK33
VID2 OUT
AK34
VID3 OUT
AL35
VID4 OUT
AL33
VID5 OUT
AM33
VID6 OUT
AM35
OUT
DPRSLPVR
AM34
OUT
PSI#
AN33
OUT
P26
P27
P28
P29
P30
P31
P32
V29
V30
V31
P33
P34
P35
R26
R27
R28
U31
U32
ISL62881CCPUEVAL2Z Schematics (Continued)
VCORE
PAGE:
IN
DATE:
JUNE 2009
3 OF 5
TP3
+12V
VSS
HO
LI
HS
HI
7
6
5
HIP2100
R104
249
49.9K
2
Q14
499
P1
3
1
BAV99
ON
3
S2 1
P2
S4
OFF
2
2N7002
2
1
C80 1
10UF
3
R102
249
2
FIGURE 5. ISL62881CCPUEVAL2Z SCHEMATIC, 4 OF 5
1
Q15
SUD50N03_07
1
2
4 J15
Application Note 1552
R105
R103
VCORE
IN
3
HB
8
DNP
4
LO
R107
8
3
VDD
2
2
3
1
1UF
U5
0.2
C79
R106
TP2
ISL62881CCPUEVAL2Z Schematics (Continued)
AN1552.0
March 24, 2010
FIGURE 6. ISL62881CCPUEVAL2Z SCHEMATIC, 5 OF 5
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
U4 RSVD
RSVD
RSVD
RPGA989
RSVD
Application Note 1552
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
U4
./MODELS
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RPGA989
RSVD
9
./MODELS
ISL62881CCPUEVAL2Z Schematics (Continued)
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout
FIGURE 7. TOP SILKSCREEN
10
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 8. BOTTOM SILKSCREEN
11
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 9. LAYER 1
12
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 10. LAYER 2
13
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 11. LAYER 3
14
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 12. LAYER 4
15
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 13. LAYER 5
16
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 14. LAYER 6
17
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 15. LAYER 7
18
AN1552.0
March 24, 2010
Application Note 1552
ISL62881CCPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 16. LAYER 8
Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the
reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding.
For information regarding Intersil Corporation and its products, see www.intersil.com
19
AN1552.0
March 24, 2010
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