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