DEMO MANUAL DC2631A-A/DC2631A-B LTC7852 High Efficiency 6-Phase Step-Down Converter DESCRIPTION Demonstration circuit 2631A features the LTC(R)7852 in two high output current, high efficiency step down converters each with its own assembly type. The converter for the -A assembly provides two 3-phase outputs of 1.0V/100A and 1.5V/100A. The -B assembly provides a single 6-phase 1.0V/200A output. Block diagrams are shown in Figure3. Both converters operate over a 7V to 14V input voltage range at a switching frequency of 400kHz. The power stage for each phase consists of a 5mm x 5mm DrMOS and 11.3mm x 11.0mm 0.25H ferrite inductor with a DCR of 0.32m typical. The LTC7852 employs a peak current mode architecture which allows accurate DCR sensing and sharing with sub-mOhm DCR inductors. The LTC7852 provides a three-state compatible PWM output for each DrMOS. Additional features of the DC2631A include: l Differential and VOUT2 sensing for the output voltages of VOUT1 PERFORMANCE SUMMARY PARAMETER l IMON pins to monitor the inductor current of each rail. l Optional resistors and jumpers to change the phase arrangement for VOUT1 and VOUT2: qVOUT1: 4ph, VOUT2: 2ph qVOUT1: 5ph, VOUT2: 1ph q Note, the default arrangement is: VOUT1: 3ph, VOUT2: 3ph lOptional resistors and jumpers to parallel VOUT1 andVOUT2. l RUN, PGOOD, PLLIN and CLKOUT pins The LTC7852 data sheet provides a complete description of the IC operation and application information. The data sheet must be read in conjunction with the quick startguide. Design files for this circuit board are available. All registered trademarks and trademarks are the property of their respective owners. Specifications are at TA = 25C, for the -A Assembly CONDITIONS Input Voltage Range VALUE 7V to 14V VOUT1 VIN = 7V to 14V, IOUT1 = 0A to 100A 1.0V 1.5% IOUT1 VIN = 7V to 14V, VOUT1 = 1.0V 100A VOUT1 Typical Efficiency (See Figure4) VIN = 12V, IOUT1 = 100A 90.3% Typical VOUT2 VIN = 7V to 14V, IOUT2 = 0A to 100A 1.5V 2% IOUT2 VIN = 7V to 14V, VOUT2 = 1.5V 100A VOUT2 Typical Efficiency (See Figure5) VIN = 12V, IOUT2 = 100A 93.3% Typical Nominal Switching Frequency 400kHz Rev. 0 1 DEMO MANUAL DC2631A-A/DC2631A-B PERFORMANCE SUMMARY PARAMETER Specifications are at TA = 25C, for the -B Assembly CONDITIONS VALUE Input Voltage Range 7V to 14V VOUT1 VIN = 7V to 14V, IOUT1 = 0A to 200A 1.0V 1.5% IOUT1 VIN = 7V to 14V, VOUT1 = 1.0V 200A VOUT1 Typical Efficiency (See Figure6) VIN = 12V, IOUT1 = 200A 90.0% Typical Nominal Switching Frequency 400kHz QUICK START PROCEDURE The evaluation setup for demonstration circuit 2631A-A/ A-B is straight forward. Refer to the diagram shown inFigure1. Next, follow the procedure below: 1)With power off, connect the input supply, load and meters as shown in Figure1. Preset the load to 0A and the VIN supply to 0V. 2)Place the RUN1, RUN2 and 5V BIAS jumpers in the ONposition. 3)Slowly increase the input voltage to 12.0V while monitoring VOUT1 and/or VOUT2. 4)At an input voltage of 12.0V, check VOUT1 and/or VOUT2. The output voltage(s) should be within the regulation limits shown in the Performance Summary table. 5)Apply full load to the output(s) and re-measure the output voltages. They should be within the regulationlimits. 6)After the basic performance has been verified, the other aspects of performance can be measured andobserved. 2 DYNAMIC LOAD CIRCUITS The DC2631A-A/DC2631B-B provides a load step circuit for VOUT1 and VOUT2. Each load step circuit consists of a load step MOSFET with a 2m sense resistor at its source. To use it, connect the output of a pulse generator between the PULSE GEN pin and the GND pin. Monitor the load step signal across the ISTEP+ and ISTEP - pins. Monitor the output voltage with the VOUT BNC. See Figure2 for the setup. For safe operation for a 0A to 200A load step, limit the duty cycle to 5% or less. The load step responses are shown in Figure9 through Figure 11. Note 1: 200 LFM airflow or more is recommended when full load is applied to both outputs of the -A assembly or when full load is applied to the output of the -B assembly. Thermal images are shown in Figure7 and Figure 8. Note 2: When powering the board, first connect the input supply to the DC2631A. Next, turn-on the input supply. Do not hot plug. This could cause large input voltage transients that may damage the converter. Rev. 0 DEMO MANUAL DC2631A-A/DC2631A-B QUICK START PROCEDURE IOUT2 LOAD #2 - VIN SUPPLY - + + + - + VIN - IIN VOUT2 VOUT1 LOAD #1 IOUT1 DC2631A-A FO1a NOTE: FOR ACCURATE EFFICIENCY MEASUREMENTS, MONITOR VOUT1 ACROSS THE CERAMIC AT COUT1 AND VOUT2 ACROSS THE CERAMIC AT COUT7. THE VOS TURRETS MONITOR THE OUTPUT VOLTAGE AT THE BULK OUTPUT CAPACITORS (a) DC2631A-A VOUT1 - VIN SUPPLY VIN + - + IIN LOAD A LOAD B IOUT1 DC2631A-A FO1b (a) DC2631A-B Figure1. Proper Measurement Setup Rev. 0 3 DEMO MANUAL DC2631A-A/DC2631A-B QUICK START PROCEDURE PULSE GENERATOR OUT DC2631A-A F02 TO OSCILLOSCOPE Figure2. Setup of the Dynamic Load Circuits PHASE 1 0 PHASE 2 120 PHASE 1 0 PHASE 2 120 VOUT1 1.0V/100A PHASE 3 240 PHASE 3 240 VIN 7V to 14V VIN 7V to 14V PHASE 4 60 PHASE 5 180 VOUT1 1.0V/200A PHASE 4 60 PHASE 5 180 VOUT2 1.5V/100A PHASE 6 300 PHASE 6 300 DC2631A F03 BLOCK DIAGRAM OF THE -A ASSEMBLY. VOUT1 PROVIDES A 3-PHASE 1.0V/100A OUTPUT AND VOUT2 PROVIDES A 3-PHASE 1.5V/100A OUTPUT BLOCK DIAGRAM OF THE -B ASSEMBLY. VOUT1 PROVIDES A 6-PHASE 1.0V/200A OUTPUT Figure3. Block Diagram of the DC2631A-A/DC2631B-B 4 Rev. 0 DEMO MANUAL DC2631A-A/DC2631A-B QUICK START PROCEDURE 100% EFFICIENCY 95% COMPONENTS/CONDITIONS: * DrMOS = FDMF5820DC 90% * fSW = 400KHZ * L = WURTH 744301025 (0.25H, 0.32M) 85% * OTHER RAIL DISABLED 80% 75% 70% * EXTERNAL 5V BIAS APPLIED (EFFICIENCY INCLUDES BIAS POWER) VIN = 7V VIN = 10V VIN = 12V VIN = 14V 0 10 20 30 40 50 60 70 LOAD CURRENT (A) 80 90 100 * NO AIRFLOW 110 DC2631A-A F04 Figure4. Efficiency of the 1.0V/100A Rail of the DC2631A-A 100% EFFICIENCY 95% COMPONENTS/CONDITIONS: COMPONENTS/CONDITIONS: * DrMOS = FDMF5820DC * DrMOS = FDMF5820DC * FSW = 400KHZ * L = WURTH 744301025 (0.25H, 0.32M) * fSW = 400KHZ * OTHER RAIL DISABLED * EXTERNAL 5V BIAS APPLIED (EFFICIENCY INCLUDES BIAS POWER)* L = WURTH 744301025 (0.25H, 0.32M) * NO AIRFLOW * OTHER RAIL DISABLED 90% 85% 80% 75% 70% * EXTERNAL 5V BIAS APPLIED (EFFICIENCY INCLUDES BIAS POWER) VIN = 7V VIN = 10V VIN = 12V VIN = 14V 0 10 20 30 40 50 60 70 LOAD CURRENT (A) 80 90 100 * NO AIRFLOW 110 DC2631A-A F05 Figure5. Efficiency of the 1.5V/100A Rail of the DC2631A-A 100% EFFICIENCY 95% COMPONENTS/CONDITIONS: * DrMOS = FDMF5820DC 90% * fSW = 400KHZ 85% * L = WURTH 744301025 (0.25H, 0.32M) 80% * EXTERNAL 5V BIAS APPLIED (EFFICIENCY INCLUDES BIAS POWER) 70% * NO AIRFLOW VIN = 7V VIN = 10V VIN = 12V VIN = 14V 75% 0 20 40 60 80 100 120 140 LOAD CURRENT (A) 160 180 200 220 DC2631A-A F06 Figure6. Efficiency of the 1.0V/200A Rail of the DC2631A-B Rev. 0 5 DEMO MANUAL DC2631A-A/DC2631A-B QUICK START PROCEDURE Ph6 Inductors Ph1 DrMOS CinBulk #1 CinBulk #2 Airflow Figure7. Thermal Image of the 1.0V/100A 3-Phase and 1.5V/100A 3-Phase Converter (DC2631A-A) at VIN = 12V, Full Load on Both Outputs. Tambient = 24C with 200 LFM Airflow. Hot Spot is DrMOS of Phase 4. DrMOS = FDMF5820DC, L = Wurth 744301025, fSW = 400kHz. Ph6 Inductors Ph1 DrMOS CinBulk #1 CinBulk #2 Airflow Figure8. Thermal Image of the 1.0V/200A 6-Phase Converter (DC2631A-B) at VIN = 12V, Full Load. Tambient = 24C with 200 LFM Airflow. Hot Spot is DrMOS of Phase 4. DrMOS = FDMF5820DC, L = Wurth 744301025, fSW = 400kHz. 6 Rev. 0 DEMO MANUAL DC2631A-A/DC2631A-B QUICK START PROCEDURE VOUT1(AC) 50mV/DIV 100A LOAD STEP 50A/DIV 50A 50sec/DIV DC2631A-A F09 Figure9. 50% to 100% Load Step Response of the 1.0V/100A 3-Phase Rail of the DC2631A A. VIN = 12V. COUT = 9x (330F, 9m) || 3x (220F, X5R, 1210), fSW = 400kHz VOUT2(AC) 50mV/DIV 100A LOAD STEP 50A/DIV 50A 50sec/DIV DC2631A-A F10 Figure10. 50% to 100% Load Step Response of the 1.5V/100A 3-Phase Rail of the DC2631A A. VIN = 12V. COUT = 9x (330F, 9m) || 3x (220F, X5R, 1210), fSW = 400kHz VOUT1(AC) 50mV/DIV 200A LOAD STEP 100A/DIV 100A 50sec/DIV DC2631A-A F11 Figure11. 50% to 100% Load Step Response of the 1.0V/200A 6-Phase Rail of the DC2631A B. VIN = 12V. COUT = 18x (330F, 9m) || 6x (220F, X5R, 1210), fSW = 400kHz Rev. 0 7 DEMO MANUAL DC2631A-A/DC2631A-B PARTS LIST ITEM QTY DEMO CIRCUIT 2631A-A REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Component DC2631A-A 1 14 C1, C2, C5, C6, C18, C19, C24, C25, C28, C29, C32, C33, C36, C37 CAP., 2.2F, X5R, 16V, 10%, 0603 KEMET, C0603C225K4PAC7867 KEMET, C0603C225K4PACTU 2 18 C3, C4, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C20, C21, C22, C23, C34, C35 CAP., 0.22F, X5R, 25V, 10%, 0603 AVX, 06033D224KAT2A MURATA, GRM188R61E224KA88D NIC, NMC0603X5R224K25TRPF TAIYO YUDEN, TMK107BJ224KA-T 3 2 C30, C31 CAP., 0.1F, X7R, 16V, 10%, 0603 AVX, 0603YC104JAT4A 4 2 C46, C47 CAP., 1F, X7R, 50V, 10%, 0805 AVX, 08055C105KAT2A TAIYO YUDEN, UMK212B7105KG-T TDK, C2012X7R1H105K125AB 5 2 C48, C50 RES., AEC-Q200, 100, 1%, 1/8W, 0805 VISHAY, CRCW0805100RFKEA 6 2 C49, C51 CAP., 47F, X5R, 6.3V, 20%, 0805 TAIYO YUDEN, JMK212BBJ476MG-T TDK, C2012X5R0J476M125AC TAIYO YUDEN, JMK212BJ476MG-T 7 1 C7 CAP., 1F, X5R, 25V, 20%, 0603 AVX, 06033D105MAT2A TAIYO YUDEN, TMK107BJ105MA-T TDK, C1608X5R1E105M080AC 8 12 CIN1, CIN2, CIN3, CIN4, CIN5, CIN6, CAP., 22F, X5R, 25V, 10%, 1210 CIN7, CIN8, CIN9, CIN10, CIN11, CIN12 MURATA, GRM32ER61E226KE15L TAIYO YUDEN, TMK325BJ226KM-P AVX, 12103D226KAT2A TAIYO YUDEN, TMK325BJ226KM-T 9 2 CIN13, CIN14 CAP., 180F, 30m, ALUM. POLYMER, 16V, 20%, SMD" PANASONIC, 16SVP180MX 10 1 CITH1 CAP., 3300pF, X7R, 50V, 10%, 0603 AVX, 06035C332KAT2A MURATA, GRM188R71H332KA01D NIC, NMC0603X7R332K50TRPF 11 1 CITH2 CAP., 2200pF, C0G, 50V, 5%, 0603 MURATA, GCM1885C1H222JA16D 12 2 CITHP1, CITHP2 CAP., 150pF, NP0, 50V, 5%, 0603 AVX, 06035A151JAT2A 13 6 COUT1, COUT3, COUT5, COUT7, COUT9, COUT11 CAP., 220F, X5R, 4V, 20%, 1206, NO SUBS. ALLOWED MURATA, GRM31CR60G227ME11L 14 18 COUT13, COUT14, COUT15, COUT16, COUT17, COUT18, COUT19, COUT20, COUT21, COUT22, COUT23, COUT24, COUT25, COUT26, COUT27, COUT28, COUT29, COUT30 CAP., 330F, 9m, ALUM. POLYMER, 2.5V, 20%, 7343, 6.3A" PANASONIC, EEFSX0E331ER 15 6 L1, L2, L3, L4, L5, L6 INDUCTOR, 0.25H, 0.32m WURTH ELEKTRONIK, 744301025 16 6 R19, R23, R38, R41, R66, R69 RES., 715, 1%, 1/10W, 0603 NIC, NRC06F7150TRF SAMSUNG, RC1608F7150CS YAGEO, RC0603FR-07715RL 17 6 R20, R21, R22, R24, R25, R26 RES SMD 2.32K, 1%, 1/10W, 0603 VISHAY, CRCW06032K32FKEA 18 24 R3, R5, R7, R8, R11, R12, R14, R16, R17, R18, R27, R29, R39, R40, R46, R49, R67, R68, R105, R110, R113, R116, R119, R122 RES., AEC-Q200, 0, 1/10W, 0603 VISHAY, CRCW06030000Z0EA NIC, NRC06ZOTRF 19 4 R33, R34, R54, R55 RES., COPPER, 0m, JUMPER, 2010 TEPRO OF FLORIDA, RN6083 8 Rev. 0 DEMO MANUAL DC2631A-A/DC2631A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 20 4 R37, R50, R64, R76 RES., 10 , 1%, 1/10W, 0603 VISHAY, CRCW060310R0FKEA NIC, NRC06F10R0TRF PANASONIC, ERJ3EKF10R0V Rohm, MCR03EZPFX10R0 YAGEO, RC0603FR-0710RL 21 7 R4, R6, R28, R30, R42, R47, R48 RES., AEC-Q200, 1, 5%, 1/10W, 0603 VISHAY, CRCW06031R00JNEA 22 1 R44 RES., 37.4k, 1%, 1/10W, 0603 VISHAY, CRCW060337K4FKEA 23 2 R72, R73 RES., AEC-Q200, 39.2k, 1%, 1/10W, 0603 VISHAY, CRCW060339K2FKEA 24 2 R78, R79 RES., AEC-Q200, 100k, 1%, 1/10W, 0603 VISHAY, CRCW0603100KFKEA NIC, NRC06F1003TRF PANASONIC, ERJ3EKF1003V 25 17 R9, R10, R31, R32, R51, R52, R74, RES., AEC-Q200, 10k, 1%, 1/10W, 0603 R75, R92, R93, R96, R97, R101, R102, RB1, RB2, RT1 VISHAY, CRCW060310K0FKEA KOA SPEER, RK73H1JTTD1002F PANASONIC, ERJ3EKF1002V 26 6 R94, R95, R99, R100, R103, R104 RES., 24.9k, 1%, 1/10W, 0603 VISHAY, CRCW060324K9FKEA PANASONIC, ERJ3EKF2492V 27 1 RITH1 RES., 4.99k, 1%, 1/10W, 0603 VISHAY, CRCW06034K99FKEA 28 1 RITH2 RES., AEC-Q200, 7.5k, 1%, 1/10W, 0603 VISHAY, CRCW06037K50FKEA 29 1 RT2 RES., 20k, 1%, 1/10W, 0603 PANASONIC, ERJ3EKF2002V VISHAY, CRCW060320K0FKEA YAGEO, RC0603FR-0720KL 30 6 U1, U2, U3, U4, U5, U6 IC, SMAT POWER STAGE MODULE FAIRCHILD, FDMF5820DC 31 1 U7 IC, DUALOUTPUT 6-PHASE CONTROLLER, GQFN-48 (5x6) ANALOG DEVICES, LTC7852ERHE#TRPBF Dynamic Load Circuits 1 2 Q1, Q2 XSTR., N-CH, TRENCH MOSFET, 30V, 80A, TO-263AB FAIRCHILD SEMI, FDB8832 2 2 R85, R90 RES., AEC-Q200, 10k, 1%, 1/10W, 0603 VISHAY, CRCW060310K0FKEA KOA SPEER, RK73H1JTTD1002F PANASONIC, ERJ3EKF1002V 3 2 R87, R91 RES., SENSE, 0.002, 1%, 1W, 2512 VISHAY, WSL25122L000FEA Bias Supply for DrMOS and LTC7852 1 1 C41 CAP., 0.1F, X7R, 16V, 10%, 0603 AVX, 0603YC104JAT4A 2 1 C40 CAP., 1F, X7R, 50V, 10%, 0805 AVX, 08055C105KAT2A TAIYO YUDEN, UMK212B7105KG-T TDK, C2012X7R1H105K125AB 3 1 C42 CAP., 22F, X5R, 6.3V, 20%, 0805 MURATA, GRM21BR60J226ME39L SAMSUNG, CL21A226MQQNNNE TDK, C2012X5R0J226M125AC 4 1 C43 CAP., 10F, X5R, 6.3V,1 0%, 0805 AVX, 08056D106KAT2A KEMET, C0805C106K9PAC7800 KEMET, C0805C106K9PACTU 5 1 D1 DIODE, SCHOTTKY BARRIER RECTIFIER, 40V 500mA, SOD-323" NXP, PMEG4005AEA,115 6 1 L7 IND, 15H, HIGH CURRENT LOW PROFILE SMD Eaton, MP14020V2-150-R 7 1 R89 RES., AEC-Q200, 0, 1/10W, 0603 VISHAY, CRCW06030000Z0EA NIC, NRC06ZOTRF Rev. 0 9 DEMO MANUAL DC2631A-A/DC2631A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 8 1 R84 RES., AEC-Q200, 0, 1/4W, 1206 VISHAY, CRCW12060000Z0EA PANASONIC, ERJ8GEY0R00V NIC, NRC12ZOTRF 9 1 R86 RES., 105k, 1%, 1/10W, 0603 VISHAY, CRCW0603105KFKEA NIC, NRC06F1053TRF 10 1 R88 RES., 20k, 1%, 1/10W, 0603 PANASONIC, ERJ3EKF2002V VISHAY, CRCW060320K0FKEA YAGEO, RC0603FR-0720KL 11 1 U8 IC, 1.1MHz/2.2MHz, 500mA STEP-DOWN REGULATOR ANALOG DEVICES, LT3502EDC#PBF 3.3V Auxiliary Supply 1 1 C68 CAP., 2.2F, X5R, 16V, 10%, 0603 KEMET, C0603C225K4PAC7867 KEMET, C0603C225K4PACTU 2 1 C69 CAP., 2.2F, X5R, 16V, 10%, 0603 KEMET, C0603C225K4PAC7867 KEMET, C0603C225K4PACTU 3 1 C66 CAP., 2.2F, X5R, 16V, 10%, 0603 KEMET, C0603C225K4PAC7867 KEMET, C0603C225K4PACTU 4 1 C67 CAP., 220pF, X7R, 50V, 5%, 0603 AVX, 06035C221JAT2A 5 1 R125 RES., AEC-Q200, 1, 5%, 1/10W, 0603 VISHAY, CRCW06031R00JNEA 6 1 R127 RES., AEC-Q200, 100k, 1%, 1/10W, 0603 VISHAY, CRCW0603100KFKEA NIC, NRC06F1003TRF PANASONIC, ERJ3EKF1003V 7 1 R129 RES., AEC-Q200, 0, 1/4W, 1206 VISHAY, CRCW12060000Z0EA PANASONIC, ERJ8GEY0R00V NIC, NRC12ZOTRF 8 1 R126 RES., AEC-Q200, 1M, 1%, 1/10W, 0603 VISHAY, CRCW06031M00FKEA NIC, NRC06F1004TRF PANASONIC, ERJ3EKF1004V 9 1 R128 RES., AEC-Q200, 162k, 1%, 1/10W, 0603 VISHAY, CRCW0603162KFKEA PANASONIC, ERJ3EKF1623V ROHM, MCR03EZPFX1623 10 1 U9 IC, LDO uPWR LINEAR REG., MSOP-8 ANALOG DEVICES, LT3010EMS8E#PBF ANALOG DEVICES, LT3010EMS8E#TRPBF Additional Components 1 0 C26, C27, C38, C39, C52, C53, C54, C55, C56, C57, C58, C59, C60, C61, C62, C63, C64, C65 CAP., OPTION, 0603 2 0 CIN15 CAP., OPTION, ALUM. ELECT., SMD 3 0 CIN16, CIN17, CIN18, CIN19, CIN20, CIN21, CIN22, CIN23, CIN24, CIN25, CIN26, CIN27 CAP., OPTION, 1210 4 0 COUT2, COUT4, COUT6, COUT8, COUT10, COUT12 CAP., OPTION, 1206 5 0 COUT31, COUT32, COUT33, COUT34, COUT35, COUT36, COUT37, COUT38, COUT39, COUT40, COUT41, COUT42, COUT43, COUT44, COUT45, COUT46, COUT47, COUT48 CAP., OPTION, 7343 10 Rev. 0 DEMO MANUAL DC2631A-A/DC2631A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION 6 7 MANUFACTURER/PART NUMBER 0 R13, R15, R35, R36, R43, R45, R53, R56, R57, R58, R59, R60, R61, R62, R63, R65, R70, R71, R77, R80, R81, R82, R83, R106, R107, R108, R109, R111, R112, R114, R115, R117, R118, R120, R121, R123, R124 RES., OPTION, 0603 0 R1,R2 RES., OPTION, 2010 1 29 E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, TEST POINT, TURRET, 0.094", MTG. HOLE E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23, E24, E25, E26, E27, E28, E29 MILL-MAX, 2501-2-00-80-00-00-07-0 2 6 J1, J2, J3, J4, J5, J6 STUD, FASTENER, #10-32 PENNENGINEERING, KFH-032-10ET 3 2 J7, J8 CONN., RF, BNC, RCPT JACK, 5-PIN, STR, THT, 50 AMPHENOL RF, 112404 4 6 JLRE1, JLRE2, JLRE3, JLRE4, JLRE5, JLRE6 "RING, LUG, CRIMP, #10, NON-INSULATED, SOLDERLESS TERMINALS KEYSTONE, 8205 5 12 JNE1, JNE2, JNE3, JNE4, JNE5, JNE6, JNE7, JNE8, JNE9, JNE10, JNE11, JNE12 NUT,HEX, #10-32, BRASS PENCOM, NU1132 6 4 JP1, JP2, JP3, JP4 "CONN.,HDR,MALE, 1x3, 2mm, THT, STR, NO SUBS. ALLOWED" Wurth Elektronik, 62000311121 7 6 JWE1, JWE2, JWE3, JWE4, JWE5, JWE6 WASHER, #10, LOCK, EXT, TIN FINISH PENCOM, WA4526 8 4 MP1,MP2,MP3,MP4 STANDOFF, NYLON, SNAP-ON, 0.625" KEYSTONE, 8834 9 4 XJP1, XJP2, XJP3, XJP4 CONN., SHUNT, FEMALE, 2 POS, 2mm Wurth Elektronik, 60800213421 Hardware Rev. 0 11 DEMO MANUAL DC2631A-A/DC2631A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Component DC2631A-B 1 14 C1, C2, C5, C6, C18, C19, C24, C25, C28, C29, C32, C33, C36, C37 CAP., 2.2F, X5R, 16V, 10%, 0603 KEMET, C0603C225K4PAC7867 KEMET, C0603C225K4PACTU 2 18 C3, C4, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C20, C21, C22, C23, C34, C35 CAP., 0.22F, X5R, 25V, 10%, 0603 AVX, 06033D224KAT2A MURATA, GRM188R61E224KA88D NIC, NMC0603X5R224K25TRPF TAIYO YUDEN, TMK107BJ224KA-T 3 2 C30, C31 CAP., 0.1F, X7R, 16V, 10%, 0603 AVX, 0603YC104JAT4A 4 2 C46, C47 CAP., 1F, X7R, 50V, 10%, 0805 AVX, 08055C105KAT2A TAIYO YUDEN, UMK212B7105KG-T TDK, C2012X7R1H105K125AB 5 2 C48, C50 RES., AEC-Q200, 100, 1%, 1/8W, 0805 VISHAY, CRCW0805100RFKEA 6 2 C49, C51 CAP., 47F, X5R, 6.3V, 20%, 0805 TAIYO YUDEN, JMK212BBJ476MG-T TDK, C2012X5R0J476M125AC TAIYO YUDEN, JMK212BJ476MG-T 7 1 C7 CAP., 1F, X5R, 25V, 20%, 0603 AVX, 06033D105MAT2A TAIYO YUDEN, TMK107BJ105MA-T TDK, C1608X5R1E105M080AC 8 12 CIN1, CIN2, CIN3, CIN4, CIN5, CIN6, CAP., 22F, X5R, 25V, 10%, 1210 CIN7, CIN8, CIN9, CIN10, CIN11, CIN12 MURATA, GRM32ER61E226KE15L TAIYO YUDEN, TMK325BJ226KM-P AVX, 12103D226KAT2A TAIYO YUDEN, TMK325BJ226KM-T 9 2 CIN13, CIN14 CAP., 180F, 30m, ALUM. POLYMER, 16V, 20%, SMD PANASONIC, 16SVP180MX 10 1 CITH1 CAP., 5600pF, COG, 50V, 5%, 0603 MURATA, GRM1885C1H562JA01D 11 2 CITHP1, CITHP2 CAP., 150pF, NP0, 50V, 5%, 0603 AVX, 06035A151JAT2A 12 6 COUT1, COUT3, COUT5, COUT7, COUT9, COUT11 CAP., 220F, X5R, 4V, 20%, 1206, NO SUBS. ALLOWED MURATA, GRM31CR60G227ME11L 13 18 COUT13, COUT14, COUT15, COUT16, COUT17, COUT18, COUT19, COUT20, COUT21, COUT22, COUT23, COUT24, COUT25, COUT26, COUT27, COUT28, COUT29, COUT30 CAP., 330F, 9m, ALUM. POLYMER, 2.5V, 20%, 7343, 6.3A PANASONIC, EEFSX0E331ER 14 6 L1, L2, L3, L4, L5, L6 INDUCTOR, 0.25H, 0.32m WURTH ELEKTRONIK, 744301025 15 6 R19, R23, R38, R41, R66, R69 RES., 715, 1%, 1/10W, 0603 NIC, NRC06F7150TRF SAMSUNG, RC1608F7150CS YAGEO, RC0603FR-07715RL 16 6 R20, R21, R22, R24, R25, R26 RES SMD, 2.32k, 1%, 1/10W, 0603 VISHAY, CRCW06032K32FKEA 17 29 R3, R5, R7, R8, R11, R12, R14, R16, R17, R18, R27, R29, R39, R40, R46, R49, R67, R68, R77, R80, R81, R82, R83, R105, R110, R113, R116, R119, R122 RES., AEC-Q200, 0, 1/10W, 0603 VISHAY, CRCW06030000Z0EA NIC, NRC06ZOTRF 18 6 R1, R2, R33, R34, R54, R55 RES., COPPER, 0m, JUMPER,2010 TEPRO OF FLORIDA, RN6083 12 Rev. 0 DEMO MANUAL DC2631A-A/DC2631A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 19 4 R37, R50, R64, R76 RES., 10, 1%, 1/10W, 0603 VISHAY NIC PANASONIC Rohm YAGEO 20 7 R4, R6, R28, R30, R42, R47, R48 RES., AEC-Q200, 1, 5%, 1/10W, 0603 VISHAY, CRCW06031R00JNEA 21 1 R44 RES., 37.4k, 1%, 1/10W, 0603 VISHAY, CRCW060337K4FKEA 22 2 R72, R73 RES., AEC-Q200, 39.2k, 1%, 1/10W, 0603 VISHAY, CRCW060339K2FKEA 23 2 R78, R79 RES., AEC-Q200, 100k, 1%, 1/10W, 0603 VISHAY, CRCW0603100KFKEA NIC, NRC06F1003TRF PANASONIC, ERJ3EKF1003V 24 17 R9, R10, R31, R32, R51, R52, R74, RES., AEC-Q200, 10k, 1%, 1/10W, 0603 R75, R92, R93, R96, R97, R101, R102, RB1, RT1 VISHAY, CRCW060310K0FKEA KOA SPEER, RK73H1JTTD1002F PANASONIC, ERJ3EKF1002V 25 6 R94, R95, R99, R100, R103, R104 RES., 24.9k, 1%, 1/10W, 0603 VISHAY, CRCW060324K9FKEA PANASONIC, ERJ3EKF2492V 26 1 RITH1 RES., 2.49k, 1%, 1/10W, 0603 NIC, NRC06F2491TRF VISHAY, CRCW06032K49FKEA YAGEO, RC0603FR-072K49L 27 6 U1, U2, U3, U4, U5, U6 IC, SMAT POWER STAGE MODULE FAIRCHILD, FDMF5820DC 28 1 U7 IC,DUALOUTPUT 6-PHASE CONTROLLER, GQFN-48 (5x6) ANALOG DEVICES, LTC7852ERHE#TRPBF Dynamic Load Circuits 1 2 Q1, Q2 XSTR., N-CH, TRENCH MOSFET, 30V, 80A, TO-263AB FAIRCHILD SEMI, FDB8832 2 2 R85, R90 RES., AEC-Q200, 10k, 1%, 1/10W, 0603 VISHAY, CRCW060310K0FKEA KOA SPEER, RK73H1JTTD1002F PANASONIC, ERJ3EKF1002V 3 2 R87, R91 RES., SENSE, 0.002, 1%, 1W, 2512 VISHAY, WSL25122L000FEA Bias Supply for DrMOS and LTC7852 1 1 C41 CAP., 0.1F, X7R, 16V, 10%, 0603 AVX, 0603YC104JAT4A 2 1 C40 CAP., 1F, X7R, 50V, 10%, 0805 AVX, 08055C105KAT2A TAIYO YUDEN, UMK212B7105KG-T TDK, C2012X7R1H105K125AB 3 1 C42 CAP., 22F, X5R, 6.3V, 20%, 0805 MURATA, GRM21BR60J226ME39L SAMSUNG, CL21A226MQQNNNE TDK, C2012X5R0J226M125AC 4 1 C43 CAP., 10F, X5R, 6.3V, 10%, 0805 AVX, 08056D106KAT2A KEMET, C0805C106K9PAC7800 KEMET, C0805C106K9PACTU 5 1 D1 DIODE, SCHOTTKY BARRIER RECTIFIER, 40V 500mA, SOD-323 NXP, PMEG4005AEA,115 6 1 L7 IND, 15H, HIGH CURRENT LOW PROFILE SMD EATON, MP14020V2-150-R 7 1 R89 RES., AEC-Q200, 0, 1/10W, 0603 VISHAY, CRCW06030000Z0EA NIC, NRC06ZOTRF 8 1 R84 RES., AEC-Q200, 0, 1/4W, 1206 VISHAY, CRCW12060000Z0EA PANASONIC, ERJ8GEY0R00V NIC, NRC12ZOTRF Rev. 0 13 DEMO MANUAL DC2631A-A/DC2631A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 9 1 R86 RES., 105k, 1%, 1/10W, 0603 VISHAY, CRCW0603105KFKEA NIC, NRC06F1053TRF 10 1 R88 RES., 20k, 1%, 1/10W, 0603 PANASONIC, ERJ3EKF2002V VISHAY, CRCW060320K0FKEA YAGEO, RC0603FR-0720KL 11 1 U8 IC,1.1MHz/2.2MHz, 500mA STEP-DOWN REGULATOR 3.3V Auxiliary Supply 1 1 C68 CAP., 2.2F, X5R, 16V, 10%, 0603 KEMET, C0603C225K4PAC7867 KEMET, C0603C225K4PACTU 2 1 C69 CAP., 2.2F, X5R, 16V, 10%, 0603 KEMET, C0603C225K4PAC7867 KEMET, C0603C225K4PACTU 3 1 C66 CAP., 2.2F, X5R, 16V, 10%, 0603 KEMET, C0603C225K4PAC7867 KEMET, C0603C225K4PACTU 4 1 C67 CAP., 220pF, X7R, 50V, 5%, 0603 AVX, 06035C221JAT2A 5 1 R125 RES., AEC-Q200, 1, 5%, 1/10W, 0603 VISHAY, CRCW06031R00JNEA 6 1 R127 RES., AEC-Q200, 100k, 1%, 1/10W, 0603 VISHAY, CRCW0603100KFKEA NIC, NRC06F1003TRF 7 1 R129 RES., AEC-Q200, 0, 1/4W, 1206 VISHAY, CRCW12060000Z0EA PANASONIC, ERJ8GEY0R00V 8 1 R126 RES., AEC-Q200, 1M, 1%, 1/10W, 0603 VISHAY, CRCW06031M00FKEA NIC, NRC06F1004TRF 9 1 R128 RES., AEC-Q200, 162k, 1%, 1/10W, 0603 VISHAY, CRCW0603162KFKEA PANASONIC, ERJ3EKF1623V ROHM, MCR03EZPFX1623 10 1 U9 IC, LDO uPWR LINEAR REG., MSOP-8 ANALOG DEVICES, LT3010EMS8E#PBF ANALOG DEVICES, LT3010EMS8E#TRPBF Additional Components 1 0 C26, C27, C38, C39, C52, C53, C54, C55, C56, C57, C58, C59, C60, C61, C62, C63, C64, C65, CITH2 CAP., OPTION, 0603 2 0 CIN15 CAP.,OPTION,ALUM. ELECT.,SMD 3 0 CIN16, CIN17, CIN18, CIN19, CIN20, CIN21, CIN22, CIN23, CIN24, CIN25, CIN26, CIN27" CAP., OPTION, 1210 4 0 COUT2, COUT4, COUT6, COUT8, COUT10, COUT12 CAP., OPTION, 1206 5 0 COUT31, COUT32, COUT33, COUT34, COUT35, COUT36, COUT37, COUT38, COUT39, COUT40, COUT41, COUT42, COUT43, COUT44, COUT45,COUT46, COUT47, COUT48 CAP., OPTION, 7343 14 Rev. 0 DEMO MANUAL DC2631A-A/DC2631A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION 6 0 R13, R15, R35, R36, R43, R45, R53, R56, R57, R58, R59, R60, R61, R62, R63, R65, R70, R71, R106, R107, R108, R109, R111, R112, R114, R115, R117, R118, R120, R121, R123, R124, RB2, RT2, RITH2 RES., OPTION, 0603 MANUFACTURER/PART NUMBER 1 29 E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, TEST POINT, TURRET, 0.094", MTG. HOLE E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23, E24, E25, E26, E27, E28, E29 MILL-MAX, 2501-2-00-80-00-00-07-0 2 6 J1, J2, J3, J4, J5, J6 STUD, FASTENER, #10-32 PENNENGINEERING, KFH-032-10ET 3 2 J7, J8 CONN., RF, BNC, RCPT JACK, 5-PIN, STR, THT, 50 AMPHENOL RF, 112404 4 6 JLRE1, JLRE2, JLRE3, JLRE4, JLRE5, JLRE6 "RING, LUG, CRIMP, #10, NON-INSULATED, SOLDERLESS TERMINALS" KEYSTONE, 8205 5 12 JNE1, JNE2, JNE3, JNE4, JNE5, JNE6, JNE7, JNE8, JNE9, JNE10, JNE11, JNE12 NUT, HEX, #10-32, BRASS PENCOM, NU1132 6 4 JP1, JP2, JP3, JP4 "CONN., HDR, MALE, 1x3 ,2mm, THT, STR, NO SUBS. ALLOWED" Wurth Elektronik, 62000311121 7 6 JWE1, JWE2, JWE3, JWE4, JWE5, JWE6 WASHER, #10, LOCK, EXT, TIN FINISH PENCOM, WA4526 8 4 MP1, MP2, MP3, MP4 STANDOFF, NYLON, SNAP-ON, 0.625" KEYSTONE, 8834 9 4 XJP1, XJP2, XJP3, XJP4 CONN., SHUNT, FEMALE, 2 POS, 2mm Wurth Elektronik, 60800213421 Hardware Rev. 0 15 A B C E8 J6 J5 E5 [2] [1] VOS2- GND [1] VOUT2 VOS2+ 1 L6 0.25uH 1 VOUT2 1.5V / 100A R30 1 U4 U5 R49 0 U6 FDMF5820DC 5.6nF 2.49k OPT 7.50k RITH2 E9 CLKOUT CLKOUT 15 14 13 12 11 10 9 15 14 13 12 11 10 9 5 VCC PGOOD1 VCC RB2 [1] PGOOD2 R79 100k 1% OPT [1] [1] 6 IMON1 SS1 13 C52 V1P5 C30 100nF IMON2 C31 100nF C53 SS2 C26 OPT VOSNS2+ VOSNS2- ITH2 SS2 PGOOD2 SNSN6 SNSP6 SNSAVG6 SNSN5 SNSP5 SNSAVG5 SNSN4 SNSP4 SNSAVG4 C27 OPT VOSNS2+ 14 VOS2- 12 11 10 9 ITH2 8 C16 0.22uF C20 0.22uF 7 5 SNSAVG6 C14 0.22uF 4 3 2 1 C12 0.22uF SNSAVG5 SNSAVG4 LTC7852ERHE C8 0.22uF C10 0.22uF 0 mOHM R2 0 mOHM R1 VOUT1 R8 0 R60 OPT R53 OPT C28 2.2uF VCC C29 2.2uF 38 VOSNS1+ 25 VCC R61 OPT R57 OPT R44 37.4k ON R45 OPT R43 OPT VOS1- RITH1 1 RUN1 RUN1 1 R42 VIN 5VBIAS [1] RUN1 OPT RUN1 VOS1+ PGOOD1 SS1 SNSN1 SNSP1 SNSN2 SNSP2 CITH1 R72 39.2k CFF1 CLKOUT PWM1 PWM2 PWM3 SNSN3 SNSP3 RT1 10k 1% CITHP1 150pF [1] 2.32k R26 2.32k R24 2.32k R21 RB1 10k 1% VCC ITH1 26 C21 0.22uF 27 28 29 30 31 C17 0.22uF C15 0.22uF SNSAVG1 33 32 34 SNSAVG2 C11 0.22uF C9 0.22uF SNSAVG3 C7 1uF 3.3V_VDD C13 0.22uF 35 36 37 Fsw = 400kHz VOSNS1+ VOSNS1- ITH1 SS1 PGOOD1 SNSN1 SNSP1 SNSAVG1 SNSN2 SNSP2 SNSAVG2 SNSN3 SNSP3 SNSAVG3 R16 0 R12 0 ITH1 CIN1 CIN2 22uF 25V 1210 CIN3 CIN4 22uF 25V 1210 CIN5 CIN6 22uF 25V 1210 15 14 13 12 OPT 2.2nF CITH2 E10 PLLIN OPT 20k RT2 E11 SS1 OPT 10k RB2 E12 SS2 SS2 4 E13 PGOOD1 E14 PGOOD1 E15 IMON1 OPT E17 1.5VREF4 OPT E16 IMON2 VCC SNSAVG3 SNSAVG4 SNSAVG5 SNSAVG6 R70 OPT R71 OPT SNSAVG2 R65 OPT R62 OPT R63 OPT SNSAVG1 R59 OPT 3 For conventional DCR sense OFF ON OFF 1 3 2 JP2 3 2 RUN1 JP1 E7 RUN2 E6 R73 39.2k R75 10k 1% VIN R74 10k 1% C39 OPT RUN2 C38 OPT VOS1- VOSNS1+ 0 R83 0 R81 0 R77 ITH2 15 14 13 12 11 10 9 15 14 13 12 11 2 VOS2- VOSNS2+ 15 14 13 12 9 10 9 11 R78 100k 1% CFF2 RT2 RITH2 CITHP2 150pF [1] 2.32k R25 2.32k R22 2.32k R20 R14 0 VO2PH4 2 8 PGND PGND PGND PGND VIN VIN VIN PGND PGND PGND PGND VIN VIN VIN PGND PGND PGND PGND VIN VIN VIN C4 0.22uF R3 0 C22 0.22uF R27 0 U2 FDMF5820DC C34 0.22uF R46 0 SS1 RUN1 U3 FDMF5820DC U1 FDMF5820DC 0 R82 0 R80 C1 2.2uF R4 1 R28 1 C18 2.2uF SS2 28 31 30 24 25 26 27 33 28 29 R66 715 THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND SUPPLIED FOR USE WITH ANALOG DEVICES PARTS. 2 R111 L2 0.25uH R106 L1 0.25uH C59 OPT OPT R51 10k 1% COUT5 220uF 4V 1206 R17 0 2 2 \ f PCB DES. APP ENG. APPROVALS R67 0 SNSN1 R107 OPT TP6 C60 OPT 3.3VPLP COUT3 220uF 4V 1206 R39 0 SNSN2 R112 OPT TP7 C61 OPT 3.3VPLP C57 OPT OPT R31 10k 1% 744301025 1 SNSP1 R104 24.9k C36 1% 2.2uF R58 OPT R105 0 CUSTOMER NOTICE 24 25 26 27 33 28 29 30 31 PWM1 5VBIAS L3 0.25uH TP8 R115 OPT SNSN3 C54 OPT C62 OPT 3.3VPLP 744301025 1 SNSP2 R38 715 R114 OPT R9 10k 1% 744301025 1 R100 24.9k C24 1% 2.2uF R36 OPT R110 0 R23 715 SNSP3 R95 24.9k C5 1% 2.2uF 5VBIAS PWM2 R97 10k 1% 24 25 26 27 33 R15 OPT R113 0 ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES APPLICATIONS ENGINEERING FOR ASSISTANCE. <Variant Name> -B SW SW SW GL GL PGND PVCC TMON EN/FAULT# RUN2 31 30 29 R102 10k 1% SW SW SW GL GL PGND PVCC TMON EN/FAULT# R47 1 C32 2.2uF SW SW SW GL GL PGND PVCC TMON EN/FAULT# PWM3 R93 10k 1% 5VBIAS VIN ECO 1 + + COUT19 COUT20 COUT21 330uF 2.5V 7343 VOS1+ VIN2- GND VIN 7V - 14V GND VOS1- Phone: (408)432-1900 3.3VAUX E4 [1] VOUT1 VOS1+ SIZE: N/A 1 SHEET 1 OF 2 710-DC2631A_REV04 SCHEMATIC NO. AND REVISION: DATE: Tuesday, June 26, 2018 IC NO. LTC7852ERHE SKU NO. DC2631A HIGH EFFICIENCY 6 PHASE STEP-DOWN CONVERTER OPT R109 VOS1- J4 J3 E3 A fA E2 APPROVED VIN+ DATE 06/26/18 R37 10 + 3.3VPLP www.analog.com OPT J2 J1 R50 10 CIN15 OPT COUT16 COUT17 COUT18 330uF 2.5V 7343 R108 + CIN13 180uF 16V + PROD E1 REVISION HISTORY DESCRIPTION 3.3V_VDD TITLE: SCHEMATIC COUT1 220uF 4V 1206 + 1 COUT13 COUT14 COUT15 330uF 2.5V 7343 CIN14 180uF 16V 4 REV VOUT1 2 1 2 1 2 3 10 CIN11 CIN12 22uF 25V 1210 IMON1 V1P5 IMON2 RUN2 VOS2+ CITH2 PGOOD2 SS2 SNSN6 SNSP6 SNSN5 SNSP5 SNSN4 SNSP4 U7 R7 0 R11 0 47 11 SS1 CIN9 CIN10 22uF 25V 1210 CIN7 CIN8 22uF 25V 1210 PLLIN PWM6 PWM5 PWM4 -B 46 10 9 PLLIN PGND PGND PGND PGND VIN VIN VIN C35 0.22uF PGND PGND PGND PGND VIN VIN VIN C23 0.22uF PGND PGND PGND PGND VIN VIN VIN C3 0.22uF RESISTORS SHALL BE INSTALLED AT LOCATIONS C48 AND C50. 3.3nF 8 R29 0 FDMF5820DC CITH1 SW SW SW GL GL PGND PVCC TMON EN/FAULT# C19 2.2uF C33 2.2uF R48 1 SW SW SW GL GL PGND PVCC TMON EN/FAULT# 4 FDMF5820DC 4.99k 24 25 26 27 33 28 29 30 31 SW SW SW GL GL PGND PVCC TMON 32 RITH1 R69 715 SNSP6 744301025 2 R101 10k 1% 24 25 26 27 PWM6 5VBIAS C37 2.2uF R56 OPT R116 0 R103 24.9k 1% 1.0V / 200A VOUT1 -B R68 0 L5 0.25uH R41 715 SNSP5 33 28 29 30 31 C2 2.2uF R5 0 7 R6 1 2 EN/FAULT# R96 10k 1% 24 25 26 27 33 28 29 30 31 PWM5 5VBIAS C25 2.2uF 744301025 2 SNSN6 C58 OPT OPT R52 10k 1% 1 R35 OPT R119 0 R99 24.9k 1% SNSN5 R117 COUT11 220uF 4V 1206 1.0V / 100A COUT28 COUT30 COUT29 330uF 2.5V 7343 R118 OPT -A 10 R64 TP9 R55 0 mOHM R40 0 3.3VPLP C63 OPT OPT R32 10k 1% C56 OPT COUT9 220uF 4V 1206 R121 OPT TP10 R120 3.3VPLP C64 OPT L4 0.25uH R92 10k 1% PWM4 R19 715 SNSP4 744301025 2 SNSN4 R18 0 C6 2.2uF R13 OPT R122 0 R94 24.9k 1% OPT R10 10k 1% C55 OPT COUT7 220uF 4V 1206 R124 OPT TP11 R123 5VBIAS 4 7 3.3VPLP C65 OPT ASSY VOS2- 10 VOUT2 + R54 0 mOHM COUT25 COUT26 COUT27 330uF 2.5V 7343 VOS2+ R76 + R34 0 mOHM COUT23 COUT22 COUT24 330uF 2.5V 7343 VO2PH5 R33 0 mOHM + VO2PH4 1 2 1 2 3 D 1 2 1 1 PWM AGND 6 NC 3 VCC SW 22 3 20 ZCD# SW 23 2 SW 21 32 PWM 1 PWM 3 VCC SW 22 AGND SW 21 ZCD# SW 23 2 4 20 4 AGND 32 AGND SW 21 ZCD# SW 23 AGND SW SW 20 VCC SW 22 19 19 5 BOOT SW 19 1 PWM 5 BOOT 5 SW AGND SW 18 PHASE SW 17 VIN SW 16 8 SW BOOT SW 7 PHASE 6 NC SW 18 VIN SW 16 8 49 GND 48 GND 15 RUN2 45 PLLIN 16 ILIM2 44 PWM6 17 IMON2 43 PWM5 18 V1P5 42 PWM4 19 IMON1 41 PWM3 20 VCC 40 PWM2 PHCFG 21 PWM1 5 BOOT SW 19 39 VDD CLKOUT FREQ 22 ILIM1 23 RUN1 24 4 AGND SW 20 VIN SW 16 8 PHASE SW 17 SW 17 SW 17 7 NC 6 VIN PHASE SW 18 SW 17 SW 16 SW 18 VIN SW 16 8 VIN SW 16 6 NC SW 18 6 NC 4 AGND 7 PHASE 5 BOOT SW 19 5 SW 20 4 AGND 6 NC SW 18 7 PHASE SW 17 BOOT SW 19 32 SW 20 2 ZCD# SW 23 AGND SW 21 VCC SW 22 3 VCC 1 PWM 2 ZCD# 32 AGND SW 3 1 2 SW 22 2 1 2 SW 23 1 PWM 21 32 AGND SW 21 VCC SW 22 ZCD# SW 23 1 16 2 5 A B C D DEMO MANUAL DC2631A-A/DC2631A-B SCHEMATIC DIAGRAM Rev. 0 A B VIN VIN CIN22 OPT 1210 CIN16 OPT 1210 COUT31 COUT32 COUT33 OPT 7343 VOUT1 + E25 E24 E21 FDB8832 R90 10k 1% Q2 FDB8832 R85 10k 1% Q1 R91 0.002 1% 2512 VOUT2 R87 0.002 1% 2512 C51 47uF 6.3V 0805 C47 1uF 50V 0805 CIN23 OPT 1210 CIN19 OPT 1210 + Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 5 CIN24 OPT 1210 CIN18 OPT 1210 COUT34 COUT35 COUT36 OPT 7343 + CIN25 OPT 1210 CIN17 OPT 1210 COUT43 COUT44 COUT45 OPT 7343 CIN26 OPT 1210 CIN21 OPT 1210 + CIN27 OPT 1210 CIN20 OPT 1210 COUT2 COUT4 COUT6 OPT 1206 COUT37 COUT38 COUT39 OPT 7343 VOUT2 ISTEP1+ 2mV / Amp VOUT1 ISTEP2+ 2mV / Amp VOUT2 4 + COUT40 COUT41 COUT42 OPT 7343 VO2PH4 ISTEP2- 5% DUTY CYCLE MAX. E27 E26 J8 ISTEP1- COUT8 OPT 1206 5% DUTY CYCLE MAX. E23 E22 J7 COUT12 OPT 1206 C49 47uF 6.3V 0805 C46 1uF 50V 0805 NOTE: PRE-LOAD RESISTORS ARE STUFFED AT C48 AND C50. GND PULSE GEN 2 1 2 C GND PULSE GEN 1 E18 1 2 D VOUT1 DYNAMIC LOAD CIRCUITS 1 2 + COUT46 COUT47 COUT48 OPT 7343 VO2PH5 C50 100 1% 0805 [2] VOUT2 C48 100 1% 0805 [2] VOUT1 OFF ON C66 2.2uF 1 R125 R88 20k JP4 3 2 1 3.3VAUX R126 1M 5VBIAS R89 0 C44 R86 OPT 105k 1uF C40 3 THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND SUPPLIED FOR USE WITH ANALOG DEVICES PARTS. CUSTOMER NOTICE JP3 3 2 1 5VBIAS VIN 2 5 D1 C41 100nF SHDN IN SENSE/ADJ OUT U9 LT3010EMS8E C43 10uF E20 E19 GND 5VBIAS 5.0V / 500mA Do not hot plug. 2 1 C67 220pF R127 100k 1% R128 162k C68 2.2uF 1206 R129 0 C69 2.2uF 3.3VAUX E29 E28 Next, connect the external supply to the 5VBIAS turret and turn-on supply, GND 3.3VAUX 3.3V/50mA f 2 \ APP ENG. APPROVALS Do not hot plug. www.analog.com Phone: (408)432-1900 SIZE: N/A SCHEMATIC NO. AND REVISION: 1 SHEET 2 OF 2 710-DC2631A_REV04 DATE: Tuesday, June 26, 2018 IC NO. LTC7852ERHE SKU NO. DC2631A HIGH EFFICIENCY 6 PHASE STEP-DOWN CONVERTER TITLE: SCHEMATIC Next, connect the external supply to the 3.3VAUX turret and turn-on supply, If external 3.3V bias is applied, remove R129 and place the 3.3VAUX jumper in the OFF position. NOTE: PCB DES. 5 8 1206 R84 0 5VBIAS 1 If external 5V bias is applied, remove R84 and place the 5VBIAS jumper in the OFF position. 22uF 15uH C42 PMEG4005AEA NOTE: GND DA 6 7 8 L7 3.3V AUXILIARY SUPPLY 9 SW BOOST U8 LT3502EDC SHDN FB BD VIN C45 OPT 4 3 2 1 VIN BIAS SUPPLY FOR DrMOS and LTC7852 ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES APPLICATIONS ENGINEERING FOR ASSISTANCE. COUT10 OPT 1206 OFF ON 3 GND 4 1 2 1 2 1 2 NC 3 GND 4 NC 6 NC 7 GND 9 5 A B C D DEMO MANUAL DC2631A-A/DC2631A-B SCHEMATIC DIAGRAM Rev. 0 17 DEMO MANUAL DC2631A-A/DC2631A-B ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the "Evaluation Board"), you are agreeing to be bound by the terms and conditions set forth below ("Agreement") unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you ("Customer") and Analog Devices, Inc. ("ADI"), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. 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ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER'S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI'S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed. 18 Rev. 0 06/19 www.analog.com ANALOG DEVICES, INC. 2019