USER’S MANUAL
ISL62881CGPUEVAL2Z AN1553 Evaluation Board Rev 0.00 Mar 24, 2010
Hardware Description Interface Connections The ISL62881CGPUEVAL2Z evaluation board •VIN: Input Voltage to the Power Stage demonstrates the performance of the ISL62881C -J5: VIN Positive Power Input single-phase synchronous-buck PWM GPU VCORE - TP31: V Positive Voltage Sense controller implementing Intel IMVP-6.5 protocol. The IN -J6: V Return Power Input ISL62881C features Intersil's Robust Ripple Regulator IN (R3™) technology. An on-board dynamic-load generator - TP32: VIN Return Voltage Sense is included for evaluating the transient-load response. It •VO: Regulated Output Voltage applies a 300µs pulse of approximately 0.2 load across -J12: VO Positive Power Output VO and PGND. -J14: VO Return Power Output Contents of this document include: •+5V: +5V Input Voltage • Design Criteria - TP29: +5V Positive Input • Recommended Test Equipment - TP30: +5V Return Input • Interface Connections • +12V: Input Voltage for the Dynamic-load Generator • Switch Descriptions - TP3: 12V Positive Input • DIP Switch Descriptions - TP2: 12V Return Input • Jumper Descriptions • Test Point Descriptions Test Set-Up
• Evaluation Board Documentation TP18 TP14 on S3 - Bill of materials RTN VSEN off 1 DPRSLPVR -Schematic _ J6 D1 S1 U2 PGND 0 1 0 VID0 - Silk-screen plots VID1 Vin VID2 VID3 -Board layer plots J5 VID4 + VIN VID5 VID6 TABLE 1. DC/DC DESIGN CRITERIA TP37 J16 +3.3V PARAMETER VALUE UNITS TP29 +5V + TP30 _5V VIN 4.5 to 20 VDC PGND
VO 0 to 1.5 VDC ISL62881CGPUEVAL2Z Full-load 26 ADC TP3 J12 TP2 VCORE PWM Frequency 300 kHz on J14 S2 PGND off
Recommended Equipment J10 VCORE • (Qty. 1) Adjustable 25V, 10A Power Supply • (Qty. 1) Fixed 5V, 100mA Power Supply FIGURE 1. TEST SET-UP • (Qty. 1) Fixed 12V, 100mA Power Supply • (Qty. 1) Adjustable Constant Current Electronic Load Switch Descriptions • (Qty. 1) Digital Voltmeter •S3: Enable • (Qty. 1) Four-Channel Oscilloscope - OFF: Short the VR_ON pin to GND (disable PWM) - ON: Allow the VR_ON pin to pull-up to +5V (enable PWM) •S2: Dynamic Load - OFF: On-board dynamic load disabled - ON: On-board dynamic load enabled
AN1553 Rev 0.00 Page 1 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
DIP-Switch Descriptions Test Point Descriptions (Continued) • S1: Set the control signals TEST POINT DESCRIPTION - S1.1: Set the DPRSLPVR signal TP12 Input side of the compensator. - S1.2: Set the DPRSTP# signal TP13 Monitor the PGOOD pin. • U2: Set the VID TP14 Monitor the VSEN pin. Jumper Descriptions TP16 Monitor the CLK_EN# pin. • J16: If installed, the +5V rail supplies the +3.3V rail TP17 Monitor the VR_ON pin. to the auxiliary circuit on the board. DO NOT APPLY +3.3V TO TP37/TP30 WHILE J16 IS TP18 Monitor the RTN pin. INSTALLED! IT’LL SHORT THE +5V AND THE TP19 Monitor the positive side of C82. +3.3V POWER SUPPLIES. When measuring board efficiency, uninstall J16 and apply +3.3V to TP20 Monitor the negative side of C82. TP37/TP30. TP21 Monitor the VID6 pin. Test Point Descriptions TP22 Monitor the VID5 pin. TP23 Monitor the VID4 pin. TEST POINT DESCRIPTION TP24 Monitor the VID3 pin. J7 Scope-probe socket for measuring PHASE1. TP25 Monitor the VID2 pin.
J10 Scope-probe socket for measuring VO. TP26 Monitor the VID1 pin. J15 Scope-probe socket for measuring the TP27 Monitor the VID0 pin. current of the on-board transient-load emulator. TP28 Monitor the IMON pin. TP29 TP1 Monitor the on-board 1.2V power supply. +5V power supply positive input. TP2 +12V power supply return input. TP30 +5V power supply return input. TP31 TP3 +12V power supply positive input. VIN positive voltage sense. TP32 TP4 Monitor the COMP pin. VIN return voltage sense. TP5 Monitor the VW pin. TP33 Monitor MOSFET Q3 gate signal. TP37 TP6 Monitor the FB pin. +3.3V power supply positive input. TP7 Monitor the DPRSLPVR pin.
Bill of Materials
QTY REFERENCE VALUE DESCRIPTION MFG. PART NUMBER PACKAGE 1 PCB ISL62881GPUEVAL2ZREVB 1 C1 0.01µF Multilayer Cap, 16V, 10% GENERIC H1045-00103-16V10 SM0603 1 C11 390pF Multilayer Cap, 16V, 10% GENERIC H1045-00391-16V10 SM0603 1 C12 330pF Multilayer Cap, 16V, 10% GENERIC H1045-00331-16V10 SM0603 1 C13 1000pF Multilayer Cap, 16V, 10% GENERIC H1045-00102-16V10 SM0603 0 C14, C15, C19, C39, DNP C44, C42, C43, C47- C50, C53, C62-C78, C81, C86 5 C16, C2, C22, C23, 1µF Multilayer Cap, 16V, 20% GENERIC H1045-00105-16V20 SM0603 C79 2 C17, C30 0.22µF Multilayer Cap, 25V, 10% GENERIC H1045-00224-25V10 SM0603 1 C18 0.27µF Multilayer Cap, 16V, 10% GENERIC H1045-00274-16V10 SM0603 3 C20, C45, C58 0.1µF Multilayer Cap, 16V, 10% GENERIC H1045-00104-16V10 SM0603 1 C21 0.047µF Multilayer Cap, 16V, 10% GENERIC H1045-00473-16V10 SM0603
AN1553 Rev 0.00 Page 2 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
Bill of Materials (Continued)
QTY REFERENCE VALUE DESCRIPTION MFG. PART NUMBER PACKAGE 1 C25 56µF Radial Cap, 25V, 20% SANYO 25SP56M CASE-CC 3 C27, C33, C80 10µF Multilayer Cap, 25V, 20% GENERIC H1065-00106-25V20 SM1206 1 C3 390pF Multilayer Cap, 16V, 10% GENERIC H1045-00391-16V10 SM0603 2 C52, C57 220µF SPCAP, 2V, 7M PANASONIC EEXSX0D221E7 1 C4 1000pF Multilayer Cap, 16V, 10% GENERIC H1045-00102-16V10 SM0603 2 C40, C41 22µF Multilayer Cap, 6.3V, 20% TAIYO JMK212BJ226MG-T SM0805 MURATA GRM21BC80J226M Kyocera CM21X5R226M04AT TDK C2012X5R0J226MT009N 2 C55, C60 10µF Multilayer Cap, 6.3V, 20% TAIYO JMK212BJ106MG-T SM0805 MURATA GRM21BR60J106ME19 Kyocera CM21X5R106M06AT TDK C2012X5R0J106MT009N 1 C6 47pF Multilayer Cap, 16V, 10% GENERIC H1045-00470-16V10 SM0603 1 C82 0.033µF Multilayer Cap, 16V, 10% GENERIC H1045-00333-16V10 SM0603 1 D1 3mmx2.5mm Surface Mount Lumex SSL-LXA3025IGC LED_3x2_5MM Red/Green LED 1 J10 Scope Probe Test POint PCB TEKTRONIX 131-4353-00 TEK131-4353-00 Mount 0 J15, J7 DNP 2 J12, J14 Wire Connector Lug BURNDY KPA8CTP KPA8CTP 1 J16 2 Pin Header 2.54mm BERG?FCI 69190-202 CONN2 (0.100) Pitch 1 J5 Binding Post Red JOHNSON- 111-0702-001 111-07XX-001 COMP 1 J6 Binding Post Black JOHNSON- 111-0703-001 111-07XX-001 COMP 1 L1 0.56µH Inductor, Inductance 20%, PANASONIC ETQP4LR56AFC 10mm x 10mm DCR 7% 2 Q1, Q14 N-Channel EMF Effect FAIRCHILD 2N7002-7-F SOT23 Transistor (Pb-Free) 1 Q15 N-Channel 30V (D-S) VISHAY SUD50N03-07 TO-252AA MOSFET 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 2.37k Thick Film Chip Resistor, 1% GENERIC H2511-02371-1/16W1 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 H2515-00R50-1W1-T SM2512 0 R109, R110, R111, DNP R113, R114, R121, R2, R26, R4, R44, R62, R68, R77, R87, R93, R99, R107 1 R11 3.48k Thick Film Chip Resistor, 1% GENERIC H2511-03481-1/16W1 SM0603
AN1553 Rev 0.00 Page 3 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
Bill of Materials (Continued)
QTY REFERENCE VALUE DESCRIPTION MFG. PART NUMBER PACKAGE 3 R13, R15, R103 499 Thick Film Chip Resistor, 1% GENERIC H2511-04990-1/16W1 SM0603 1 R16 47.5k Thick Film Chip Resistor, 1% GENERIC H2511-04752-1/16W1 SM0603 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 16 R20, R22, R24, R25, 0 Thick Film Chip Resistor, 1% GENERIC H2511-00R00-1/16W1 SM0603 R27, R29, R32, R33, R34, R35, R40, R52, R56, R62, R87, R112 9 R21, R28, R36, R39, 10k Thick Film Chip Resistor, 1% GENERIC H2511-01002-1/16W1 SM0603 R43, R45, R46, R49, R51 1 R30 1.07k Thick Film Chip Resistor, 1% GENERIC H2511-01071-1/16W1 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 PANASONIC ERT-J1VR103J SM0603 2 R5, R80 100 Thick Film Chip Resistor, 1% GENERIC H2511-01000-1/16W1 SM0603 1 R50 7.15k Thick Film Chip Resistor, 1% GENERIC H2511-07151-1/16W1 SM0603 2 R59, R96 0 Solder Joint (Heavy Duty) 1 R6 8.66k Thick Film Chip Resistor, 1% GENERIC H2511-08661-1/16W1 SM0603 1 R63 1.82k Thick Film Chip Resistor, 1% GENERIC H2511-01821-1/16W1 SM0805 1 R7 261k Thick Film Chip Resistor, 1% GENERIC H2511-02613-1/16W1 SM0603 1 S1 SD Series Low Profile Dip C&K SD02H0SK DIPSWSMT-4 Switch 2 S2, S3 SPDT On-None-On SMT C&K GT11MSCKE GT13MSCKE Ultraminiature Toggle Switch 1 S4 Schottky Barrier (Double) DIODES BAT54S SOT23 Diode 4 TP2, TP3, TP29, Test Point Turret 0.15 Pad KEYSTONE 1514-2 TP-150C100P TP30 0.1 Thole 28 TP1, TP4-TP7, Miniature White Test Point KEYSTONE 5002 MTP500X TP12-TP14, 0.100 Pad 0.040 Thole TP16-TP28, TP31-TP33, TP37, TP40 0TP38, TP39DNP 1 U1 Low Volt Precision ON-SEMI TLV431ASNT1 TSOP-5 Adjustable Shunt Regulator 1 U2 SD Series Low Profile Dip C&K SD07H0SK DIPSWSMT-14 Switch 1 U4 rPGA989 CPU Socket FOXCONN 1 U5 100V/2A Peak High INTERSIL HIP2100IBZ SOIC8_150_50 Frequency Half Bridge Driver (Pb-Free) 1 U6 IMVP-6.5 PWM Controller INTERSIL ISL62881CHRTZ QFN-28
AN1553 Rev 0.00 Page 4 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z 1OF AUGUST
DATE: PAGE: 100
VID0 VID1 VID2 VID3 VID4 VID5 VID6 R80 TP37 3.3V TP29 5V TP30 PGND 14 13 12 11 10 9 8 JIA WEI CONTROLLER 9 8 "1" 14 13 12 11 10
VCCP1.2V
1UF 1UF
+3.3V +5V
2
U2 1 2 1
C2 C23 J16 MST7_SPST ISL62881C GPU EVALULATION BOARD 1 2 3 4 5 6 7 0
R52
"0"
1 2 3 4 5 6 7 VID0 10K
ENGINEER:
TP27 TITLE:
R51
VID1 10K
TP26 ROUTE UGATEGOING TRACE TO INROUTE THE PARALLEL LGATE SOURCE WITHGOING TRACE OF THE TO IN Q1 PHASE1 THE PARALLEL AND SOURCE TRACE Q2. WITH OF THE Q3 VSSP AND TRACE Q4.
VSUM+ VSUM- R49
VID2 10K IN IN
TP25
0.1UF
R46 NOTE:
VSSSENSE
VID3 10K TP28 IMON C20 TP24
IN R45
DNP VID4 10K
1UF 0.047UF TP23
R43 R44
C22 C21
NTC VID5 10K
7.15K 2.61K 10K TP22
R39
----->
R50
OUT OUT OUT OUT R41 R42
VID6 10K
11K TP21
PLACE NEAR L1
R36
0
BOOT +5V VIN R38
IN
VSUM+ VSUM-
VID0 LGATE PHASE UGATE
DNP 0
R34
TP19 TP20 IN IN IN
VID1
0 19 18 17 16 15 C19 R33 21 20
0.27UF R35
0
R40 C18
0 VID1 VID0 VCCP VSSP
0.033UF VID2 BOOT
IN PHASE UGATE LGATE
VID2 22 14
0.22UF
0
R32 1
IMON VID3
IN
C82 VID3 13 23 R37
0
R29 C17
VIN VID4
IN
VID4
12 24
1UF
0 DNP
R27 R109
DNP DNP VDD VID5 R30
IN
VID5 25 11
0 1.07K
U6
R25 C16
ISUM+ VID6
IN
R26 C15 VID6
26 10 C81
DNP R24
ISUM- VR_ON ISL62881C
TP17
27 9 VR_ON
RTN DPRSLPVR
8 28 DNP
DPRSLPVR EP DNP R114 10K R21
R115
0 10K CLK_EN# PGOOD RBIAS VW COMP FB VSEN
FIGURE 2. 1 OF 5 SCHEMATIC, ISL62881CGPUEVAL2Z 2 R20 1.91K TP16
CLK_EN#
R28 1 2 3 4 5 6 7
29 RTN R23
P1 P2 DNP
VR_ON
S3
TP18
1 VSEN 3
OFF ON C14
1.91K TP13 TP14
PGOOD DPRSLPVR
R19 R16
47.5K TP7 0 499
R22
C12
330PF
4 3
TP12
R15 1
1 2 "1" RED
1000PF
499
3 3 24 GRN
+3.3V
S1 R13 Q1 D1 EAD102L C11 2N7002 OUT "0" 390PF 10 10 IN IN 1 2 DPRSLPVR R17 R18 R11 3.48K
R5
100 FB R10 0.01UF 2.37K IN
VCCP1.2V 3 C1 TP6 VSSSENSE VCCSENSE
R7
1000PF
VW 261K VCORE
TP5 C6
TP1 47PF C4
5
U1 + - REF 8.66K C3 V
1.24
390PF
TLV431ASNT1 R6
COMP DNP DNP
4 TP4
R2 R4
DNP DNP
R1
49.9 R110 C83 +3.3V ISL62881CGPUEVAL2Z Schematics
AN1553 Rev 0.00 Page 5 of 20 Mar 24, 2010
ISL62881CGPUEVAL2Z
DNP
1 C61 1
J12 J14
10UF
C60
DNP
C59 DNP
J10
C56 4
3
10UF OUT
1 0.1UF 2
C55
DNP C58
->
C54 ------
VCORE
7MOHM CLOSE TO THE PROBE SOCKET 220UF 22UF
1 2
C57
C41
7MOHM
0.1UF 220UF 22UF
1 2
C52 C40 C45
------>
CENTERED IN THE CPU SOCKET
DNP R99
0
R96 DNP
R93 0
OUT
-----> R87 __ VSUM-
DNP --> R77
L1
0.56UH DNP
1.3MOHM --> R68
PADS FOR BIG INDUCTOR 1.82K PADS FOR SMALL INDUCTOR 0
__ OUT (Continued) R62 -----> R63 VSUM+
--> 0 J7
R59 PHASE1 4 3 1 2 FIGURE 3. 2 OF 5 SCHEMATIC, ISL62881CGPUEVAL2Z 10MIL CLEARANCE OPENINGS WITH 4 4
IRF7821 IRF7832 5 1 1 5
2 2
3 Q8 Q9 3 4 4
IRF7821 IRF7832 5 1 5 1
2 2
3
Q2 Q3 3
10UF
C33
LGATE
10UF C30 TP33
0.22UF C27 56UF
0
2 1 R56 C25 UGATE PHASE BOOT LGATE IN IN IN IN VIN PGND OUT J5 J6 VIN TP31 TP32 ISL62881CGPUEVAL2Z Schematics
AN1553 Rev 0.00 Page 6 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z 3 AUGU DATE: PAGE:
AC32 AC33 AC34 AC35 AD26 AD27 AD28 AD29 AD30 AD31 AD32 AD33 AD34 AD35 AF26 AF27 AF28 Y27
VSS VSS
W6 V10
VSS VSS
VCC
U8 W26
VSS VSS
AC31
VCC
W27 U4
VSS VSS
AC30 VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC VCC
VCC
U2 W28
VSS VSS
AA27
VCC VCC W29 T35
VSS VSS
AA26 AF29
T34 VCC VCC W30
VSS VSS
AC29 AF30
VCC VCC
T33 W31
VSS VSS
AC28 AF31
VCC VCC
T32 W32
VSS VSS
Y35 AF32
VCC VCC
T31 W33
VSS VSS
Y34 AF33
VCC VCC
T30 W34
VSS VSS
AC27 AF34
VCC VCC
T29 W35
VSS VSS
AC26 AF35
VCC VCC
T28 Y2
VSS VSS
Y33 AG26
VCC T27 Y4 VCC
VSS VSS
Y32 AG27
VCC VCC Y8 T26
VSS VSS
AA35 AG28
T6 AA10 VCC VCC
VSS VSS
AA34 AG29
VCC VCC
R10 AB6
VSS VSS
Y31 AG30
VCC VCC
P8 AB26
VSS VSS
AG31 Y30
VCC VCC
P4 JIA WEI AB27
VSS VSS
AA33 AG32
VCC VCC
AB28 P2 CPU SOCKET
VSS VSS
AA32 AG33
VCC VCC
AB29 N35
VSS VSS
Y29 AG34
VCC VCC AB30 N34
VSS VSS
Y28 AG35
AB31 N33 VCC
VSS VSS
AA31
VTT2 VCC
AB32 N32
VSS VSS
AA30 A11
VTT2 VCC
AB33 N31
VSS VSS
Y26 A12
VTT2 VCC
N30 AB34
VSS VSS
V35 A13
VTT2 VCC
N29 AB35
VSS VSS
AA29 A14
VTT2 VCC N28 AC2
VSS VSS
AA28
B12 ISL62881C GPU EVALUATION BOARD
VTT2 VCC
N27 AC4
VSS VSS
V28 B14
VTT2 N26 VCC AC8
VSS VSS
V27 C11
VTT2 VCC
N6 AD10
VSS VSS
V26 C12
VTT2 M10 VCC AE6
VSS VSS
U35 C13
VTT2 VCC L35 AE26
VSS
VSS ENGINEER:
U34
C14 TITLE:
VTT2 VCC
L32 AE27
VSS VSS
U30 D11
VTT2 VCC
L29 AE28
VSS VSS
D12 U29
VTT2 VCC
L8 AE29
VSS VSS
U28 D13
VTT2 VCC
L5 AE30
VSS VSS
U27 D14
VTT2 VCC AE31 L2
VSS VSS
E12 U26
K34 VTT2 VCC AE32
VSS VSS
R35 E14
VTT2 VCC
AE33 K33
VSS VSS
V34 F11
VTT2 VCC
AE34 K30
VSS VSS
V33 F12
VTT2 VCC
AE35 K27
VSS VSS
V32 F13
VTT2 VCC
K9 AF2
VSS VSS
R34 F14
VTT2 VCC
K6 AF4
VSS VSS
R33 G11
VTT2 VCC
K3 AF8
VSS VSS
R32 G12
VTT2 AG10 VCC J32
VSS VSS
R31 G13
VTT2 VCC
AH3 J30
VSS VSS
R30 G14
VCC VTT2 J21 AH6
VSS VSS
R29 H12
VCC VTT2
AH9 J19
VSS VSS
U33 H14
VCC VTT2
AH13 H35
VSS VSS
J11
VTT2 VCC
AH17 H32
VSS VSS
J12
VTT2 VCC
AH20
VCCP1.2V H22 VSS VSS
J13
VTT2 VCC
AH26 H24
VSS VSS
J14
VTT2 VCC
AH27
IN H26 VSS VSS
K10
VTT2 AH28 VCC H28
VSS VSS
L10
VTT2 VCC
H18 AH29
VSS VSS
N10
VTT2 VCC
H15 TP39 VTT2 AH30
VSS VSS
P10
VTT2 VCC AH31 H13
VSS VSS
T10 0
VTT2 VCC
H11 AH32
VSS VSS
U10
VTT2 VCC
H8 AH33
VSS VSS
W10
VTT2 VCC H5 AH34
VSS VSS
U4 Y10
H2 VTT2 AH35 VCC
VSS VSS
AB10
VTT2 VCC G34 AJ2
VSS VSS
AC10
AJ5 G31 VTT2 VCC
VSS VSS
RPGA989 AE10
VTT2 VCC
G20 AJ8
VSS VSS
AF10
VTT2 VCC
G9 AJ11
VSS VSS
AH10 DNP
VTT2 VCC
G6 AJ14
VSS VSS
AH11
VTT2 VCC
AJ17 G3
VSS VSS
U32 AH12
VTT2 VCC
AJ20 F30
VSS VSS
U31 AH14
VCC
AJ23 F27
VSS VSS
R28
VTT1 AK17 F25 VCC
VSS VSS
E25 R27 DNP
VTT1 VCC
AK20
R113 F22 VSS VSS
E26 R26
VTT1 VCC
F19 AK25
VSS VSS
F26 P35
VTT1 VCC
F16 AK28
VSS VSS
G26 P34
VTT1 VCC
E35 AK31
VSS VSS
P33 G27
VTT1 VCC E32 AL3
VSS VSS
V31 G28 DNP
C84 C85
VCC VTT1 E29 AL6
VSS VSS
H19 V30
VTT1 E24 AL9 VCC
VSS VSS
H20 V29
VCC VTT1 E21
(Continued) AL12 VSS VSS
P32 H21
E18 AL17 VTT1 VCC
VSS VSS
P31 H25
VTT1 VCC
E13 AL20
VSS VSS
P30 H27
VTT1 VCC
E11 AL23
VSS VSS
P29 J18
VTT1 VCC
E8 AL34
VSS VSS
P28 J20
VTT1 VCC
E5 DNP AM2
R111 R112
VSS VSS
P27 J22
VCC VTT1
E2 AM5
VSS VSS
P26 J23
VTT1 D33 AM8
VSS VSS
J24
PSI_B AM11 D30 VTT1
VSS VSS
J25 AN33
DPRSLPVR VTT1
D26
AM14 FIGURE 4. 3 OF 5 SCHEMATIC, ISL62881CGPUEVAL2Z
VSS
TP38 VSS
AM34 J26 VTT1
VTT1
D9
IN AM17 VSS VSS
J27
VID6 VTT1
AM20 D6
VSS VSS
K26 AM35
VID5
AM26 D3
VSS VSS
AM33
VID4
AM28 C34
VSS VSS
VCCDDR_DQ
AL33
VID3
H1 AM31 C32
VSS VSS
VCCDDR_DQ
AL35
VID2 L1 C29 AN17
VSS VSS
VCCDDR_DQ
AK34
VID1
C28 N4 AN20
VSS VSS
VCCDDR_DQ
AK33
AN23 VID0 C24 N7
VSS VSS
VCCDDR_DQ AK35
P1 C22
VCCP1.2V AN34 VSS VSS
VCCDDR_DQ
ISENSE_DP
C20 T4 AP2
VSS VSS
AN35 VCCDDR_DQ
VCC_SENSE
C19 T7 AP4
VSS VSS
VCCDDR_DQ
AJ34
VSS_SENSE
U1 C16 AP7
VSS VSS
VCCDDR_DQ
AJ35
W4 B34 AP10
VSS VSS
VCCDDR_DQ
OUT VCCAXG_SENSE
W7 B31 AP13
VSS VSS
VCCDDR_DQ
AR22 VCCSENSE
OUT Y1 B25 VSSAXG_SENSE AP17
VSS VSS
VCCDDR_DQ AT22 VSSSENSE
AB4 B21 AP20
VSS VSS
VCCDDR_DQ DFGT_IMON
IN
AM24 AE4 B18 IMON AR3
VSS VSS
VCCDDR_DQ
OUT DFGT_VID6
AC1 AR6 B17
VSS VSS
VCCDDR_DQ
VID6 AN24
OUT DFGT_VID5
AF1 AR9 B13
VSS VSS
AP24 VID5 VCCDDR_DQ
OUT DFGT_VID4
AE7 B11 AR12
VSS VSS
VCCDDR_DQ
AM23 VID4
OUT DFGT_VID3 B8 AJ1 AR15
VSS VSS
AP23 VID3
OUT DFGT_VID2 B6 AR17
VSS VSS
AN22 VID2
DFGT_VID1 OUT
B4 AR20
VSS VSS
VCCDDR_DQ
VID1 AP22
OUT DFGT_VID0 AB7 B2 AR23
VSS VSS
AM22 VID0
B1 AR24
VSS VSS
OUT DFGT_VR_EN
AR25 VR_ON A35 AR26
VSS VSS
OUT DFGT_DPRSLPVR
DPRSLPVR AT25 AR28 A29
VSS VSS
AR31 A27
VSS VSS
AR34 A23
VSS VSS
AT1 A9 VSS
AP34 VSS
AT35
VSS
AT20
VSS
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 AT17
RPGA989
./MODELS 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 U4 VCORE IN ISL62881CGPUEVAL2Z Schematics
AN1553 Rev 0.00 Page 7 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
J15
4 3
1 2
DNP
R107
SUD50N03_07 0.2
Q15
2 3 VCORE R106 1 IN 3 S4 BAV99 1 2 249 249 R104 R105 OFF ON 1 3 P1 P2 S2
2
(Continued)
10UF
1 2 8 7 6 5 C80 FIGURE 5. 4 OF 5 SCHEMATIC, ISL62881CGPUEVAL2Z LO LI HI VSS U5 499 HIP2100 R103 VDD HB HO HS
1 2 3 4
TP3 +12V 49.9K
2N7002 Q14 3 2 R102 1
1UF C79 TP2 ISL62881CGPUEVAL2Z Schematics
AN1553 Rev 0.00 Page 8 of 20 Mar 24, 2010
ISL62881CGPUEVAL2Z
RSVD
G1 RSVD
G2
RSVD
G4
RSVD RSVD
G5 A2
RSVD RSVD
G7 J15
RSVD RSVD
G8 J16
RSVD RSVD
G10 F35
RSVD RSVD
G15 F34
RSVD RSVD
G16 F33
RSVD RSVD
F32 G17
RSVD RSVD
F31 G18
RSVD RSVD RSVD RSVD
F29 AL11 G19 AL13
RSVD RSVD RSVD RSVD
F28 AL14 G21 AL10
RSVD RSVD RSVD RSVD
F24 AL8 G22 AL15
RSVD RSVD RSVD RSVD
AL7 F23 G23 AL22
RSVD RSVD RSVD RSVD
AL5 AL24 F21 G24
RSVD RSVD RSVD RSVD
AL4 F20 G25 AL25
RSVD RSVD RSVD RSVD
G29 AL26 AL2 F18
RSVD RSVD RSVD RSVD
G30 AL27 AL1 F17
RSVD RSVD RSVD RSVD
G32 AL28 AK32 F15
RSVD RSVD RSVD RSVD
G33 AL29 F10 AK30
RSVD RSVD RSVD RSVD
G35 AL30 F9 AK29
RSVD RSVD RSVD RSVD
AK27 AL31 F8 H3
RSVD RSVD RSVD RSVD
AK26 F7 H4 AL32
RSVD RSVD RSVD RSVD
AK24 AM1 H6 F6
RSVD RSVD RSVD RSVD
AM3 AK23 F5 H7
RSVD RSVD RSVD RSVD
AM4 AK22 F4 H9
RSVD RSVD RSVD RSVD
AM6 AK15 H10 F3
RSVD RSVD RSVD RSVD
AM7 AK14 F2 H16
RSVD RSVD RSVD RSVD
AM9 AK13 F1 H17
RSVD RSVD RSVD RSVD
AM10 E34 H23 AK12
RSVD RSVD RSVD RSVD
AM12 AK11 H29 E33
RSVD RSVD RSVD RSVD
AK10 E31 H30 AM13
RSVD RSVD RSVD RSVD
E30 H31 AM15 AK9
RSVD RSVD RSVD RSVD
E28 AM25 H33 AK8
RSVD RSVD RSVD RSVD
E27 AK7 AM27 H34
RSVD RSVD RSVD RSVD
E23 J1 AM29 AK6
RSVD RSVD RSVD RSVD
E22 AM30 J2 AK5
RSVD RSVD RSVD RSVD
E20 J3 AM32 AK4
RSVD RSVD RSVD RSVD
E19 J4 AK3 AN1
RSVD RSVD RSVD RSVD
E17 J5 AK2 AN2
RSVD RSVD RSVD RSVD
E16 J6 AK1 AN3
RSVD RSVD RSVD RSVD
J7 E15 AJ33 AN4
RSVD RSVD RSVD RSVD
E10 J8 AJ32 AN5
RSVD RSVD RSVD RSVD
AJ31 E9 J9 AN6
RSVD RSVD RSVD RSVD
J10 E7 AN7 AJ30
RSVD RSVD RSVD RSVD
J17 E6 AN8 AJ29
RSVD RSVD RSVD RSVD
J28 E4 AN9 AJ28
RSVD RSVD RSVD RSVD
J29 AN10 E3 AJ27
RSVD RSVD RSVD RSVD
AN11 E1 J31 AJ26
RSVD RSVD RSVD RSVD
D35 J33 AN12 AJ25
RSVD RSVD RSVD RSVD
J34 D34 AN13 AJ24
RSVD RSVD RSVD RSVD
AJ22 J35 D32 AN14
RSVD RSVD RSVD RSVD
AJ15 D31 K1 AN15
RSVD RSVD RSVD RSVD
AJ13 D29 K2 AN25
RSVD RSVD RSVD RSVD
AJ12 K4 D28 AN26
RSVD RSVD RSVD RSVD
D27 K5 AN27 AJ10
RSVD RSVD RSVD RSVD
AN28 K7 D25 AJ9
RSVD RSVD RSVD RSVD
D24 K8 AN29 AJ7
RSVD RSVD RSVD RSVD
AN30 K28 D23 AJ6
RSVD RSVD RSVD RSVD
D22 AN31 K29 AJ4
RSVD RSVD RSVD RSVD
AN32 D21 K31 AJ3
RSVD RSVD RSVD RSVD
AP1 D20 K32 AH25
RSVD RSVD RSVD RSVD
AP3 D19 K35 AH24
RSVD RSVD RSVD RSVD
AP5 L3 D18 AH23
RSVD RSVD RSVD RSVD
AP6 AH22 D17 L4
RSVD RSVD RSVD RSVD
AP8 AH15 D16 L6
RSVD RSVD RSVD RSVD
AP9 D15 L7 AH8
RSVD RSVD RSVD
D10 L9 AH7
RSVD RSVD RSVD
L26 D8 AH5
RSVD RSVD RSVD
D7 AH4 L27
RSVD RSVD RSVD
AH2 D5 L28
RSVD RSVD RSVD RSVD
AP11 AH1 L30 D4
RSVD RSVD RSVD RSVD
D2 L31 AP12 AG9
RSVD RSVD RSVD RSVD
D1 L33 AP14 AG8
RSVD RSVD RSVD RSVD
L34 AP15 AG7 C35
RSVD RSVD RSVD RSVD
C33 M1 AP25 AG6
RSVD RSVD RSVD RSVD
C31 AP26 M2 AG5
RSVD RSVD RSVD RSVD
C30 AP27 M3 AG4
RSVD RSVD RSVD RSVD
AG3 AP28 M4 C27
RSVD RSVD RSVD RSVD
AP29 AG2 M5 C26
RSVD RSVD RSVD RSVD
C25 AP30 AG1 M6
RSVD RSVD RSVD RSVD
AF9 M7 AP31 C23
RSVD RSVD RSVD RSVD
AP32 M8 C21 AF7
RSVD RSVD RSVD RSVD
AP33 M9 AF6 C18
RSVD RSVD
(Continued) RSVD
C17 M26 AF5
RSVD RSVD RSVD RSVD
AP35 AF3 M27 C15
RSVD RSVD RSVD RSVD
AE9 AR1 C10 M28
RSVD RSVD RSVD RSVD
AE8 AR2 C9 M29
RSVD RSVD RSVD RSVD
AE5 AR4 M30 C8
RSVD RSVD RSVD RSVD
AR5 AE3 C7 M31
RSVD RSVD RSVD RSVD
AR7 AE2 M32 C6
RSVD RSVD RSVD RSVD
AR8 M33 AE1 C5
RSVD RSVD RSVD RSVD
AR10 M34 C4 AD9
RSVD RSVD RSVD
RSVD FIGURE 6. 5 OF SCHEMATIC, ISL62881CGPUEVAL2Z
M35 C3 AR11 AD8
RSVD RSVD RSVD RSVD
AR13 N1 C2 AD7
RSVD RSVD RSVD RSVD
AR14 C1 AD6 N2
RSVD RSVD RSVD RSVD
AR27 N3 AD5 B35
RSVD RSVD RSVD RSVD
AR29 N5 B33 AD4
RSVD RSVD RSVD RSVD
AR30 AD3 N8 B32
RSVD RSVD RSVD RSVD
AR32 AD2 N9 B30
RSVD RSVD RSVD RSVD
AR33 AD1 P3 B29
RSVD RSVD RSVD RSVD
AR35 P5 AC9 B28
RSVD RSVD RSVD RSVD
AT2 P6 AC7 B27
RSVD RSVD RSVD RSVD
AT3 B26 P7 AC6
RSVD RSVD RSVD RSVD
AT4 P9 AC5 B24
RSVD RSVD RSVD RSVD
AT5 R1 AC3 B23
RSVD RSVD RSVD RSVD
AT6 B22 R2 AB9
RSVD RSVD RSVD RSVD
R3 AT8 AB8 B20
RSVD RSVD RSVD RSVD
R4 AT9 B19 AB5
RSVD RSVD RSVD RSVD
AT10 R5 AB3 B16
RSVD RSVD RSVD RSVD
R6 AT11 AB2 B15
RSVD RSVD RSVD RSVD
R7 AT12 AB1 B10
RSVD RSVD RSVD RSVD
R8 AT13 B9 AA9
RSVD RSVD RSVD RSVD
AT14 B7 AA8 R9
RSVD RSVD RSVD RSVD
AT15 B5 T1 AA7
RSVD RSVD RSVD RSVD
AT23 B3 AA6 T2
RSVD RSVD RSVD RSVD
T3 AT24 AA5 A34
RSVD RSVD RSVD RSVD
T5 AT26 AA4 A33
RSVD RSVD RSVD RSVD
T8 AT27 AA3 A32
RSVD RSVD RSVD RSVD
T9 AT28 AA2 A31
RSVD RSVD RSVD RSVD
U3 AT29 A30 AA1
RSVD RSVD RSVD RSVD
U5 AT30 Y9 A28
RSVD RSVD RSVD RSVD
U6 AT31 Y7 A26
RSVD RSVD RSVD RSVD
U7 A25 AT32 Y6
RSVD RSVD RSVD RSVD
A24 U9 AT33 Y5
RSVD RSVD RSVD RSVD
AT34 Y3 V1 A22
RSVD RSVD RSVD
V2 AT7 A21
RPGA989 RSVD RSVD
V3 A20
RSVD RSVD
V4 A19
RSVD RSVD
V5 A18
RSVD RSVD
V6 A17
RSVD RSVD
U4
V7 A16
RSVD RSVD
V8 A15
RSVD RSVD
A10 V9
RSVD RSVD
A8 W1
RSVD ./MODELS RSVD
A7 W2
RSVD RSVD
U4 A6 W3
RSVD RSVD
A5 W5
RSVD RSVD
A4 W8
RSVD RSVD
A3 W9 RPGA989 ./MODELS ISL62881CGPUEVAL2Z Schematics
AN1553 Rev 0.00 Page 9 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout
FIGURE 7. TOP SILKSCREEN
AN1553 Rev 0.00 Page 10 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 8. BOTTOM SILKSCREEN
AN1553 Rev 0.00 Page 11 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 9. LAYER 1
AN1553 Rev 0.00 Page 12 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 10. LAYER 2
AN1553 Rev 0.00 Page 13 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 11. LAYER 3
AN1553 Rev 0.00 Page 14 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 12. LAYER 4
AN1553 Rev 0.00 Page 15 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 13. LAYER 5
AN1553 Rev 0.00 Page 16 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 14. LAYER 6
AN1553 Rev 0.00 Page 17 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 15. LAYER 7
AN1553 Rev 0.00 Page 18 of 20 Mar 24, 2010 ISL62881CGPUEVAL2Z
ISL62881CGPUEVAL2Z Evaluation Board Layout (Continued)
FIGURE 16. LAYER 8
AN1553 Rev 0.00 Page 19 of 20 Mar 24, 2010
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