DEMO MANUAL DC2291A LTC3882EUJ High Efficiency Step-Down DC/DC Converter with Digital Power System Management DESCRIPTION Demonstration circuit 2291A is a high current, high efficiency, PolyPhase® synchronous buck converter featuring the LTC®3882EUJ, a dual output voltage mode controller. This demo board incorporates two LTC3882 controllers which provide four phases to deliver up to 140A. The default output voltage is 1V and can be adjusted from 0.5V to 2V. The LTC3882 has the PMBus interface and digital power system management functions. the GUI software LTpowerPlay™ onto your PC and use LTC’s I2C/SMBus/PMBus Dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration settings within its onboard EEPROM, along with viewing telemetry parameters that include voltage, current, temperature and fault status. The DC2291A powers up to default settings and produces power based on configuration resistors or with its nonvolatile memory without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the parts, download GUI DOWNLOAD The software can be downloaded from: http://www.linear.com/LTpowerPlay Design files for this circuit board are available at http://www.linear.com/demo/DC2291A L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and LTpowerPlay are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. PERFORMANCE SUMMARY SYMBOL PARAMETER VIN Input Supply Range VOUT0 Output Voltage Range IOUT0 Output Current Range FSW Factory Default Switching EFFICIENCY Full Load Efficiency Specifications are at TA = 25°C CONDITIONS IOUT0 = 0A to 140A, VIN = 7V to 14V MIN TYP MAX 7 12 14 V 0.5 1.0 2.0* V 0 VOUT0 = 1.0V, IOUT0 = 140A, See Figure 4. UNITS 140** A 450 kHz 88.6 % *Note: The DC2291A uses 2.5V-rated low ESR PosCAP (Part No. 2R5TPE470M7) as output capacitors for optimized load transient performance. If >2.0V VOUT is needed, 4V or 6.3V-rated output capacitors should be used. **Note: When continuously running at full load, forced air flow is needed. dc2291af 1 DEMO MANUAL DC2291A QUICK START PROCEDURE Demonstration circuit 2291A makes it easy to set up to evaluate the performances of the LTC3882. Refer to Figure 2 for proper measurement equipment setup and follow the procedure below: Note. When measuring the input or output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. Measure the output voltage ripple by touching the probe tip directly across the C50. See Figure 3 for proper scope probe technique. 1.Make sure jumpers are in the following positions: JUMPER JP5 JP7 POSITION ON ON FUNCTION External 5V VDR for DrMOS External 5V VCC for LTC3882 2.With power off, connect the input power supply to VIN and GND. Connect active load to the output (through J3 and J18 for VOUT and J4 and J19 for GND). 4.Turn on the power at the input. Note. Make sure that the input voltage does not exceed 15V. 5.Turn on RUN switch (SW4) as desired. 6.Check for the correct output voltage from VOUT0+ to VOUT0–. Note. If there is no output, temporarily disconnect the load to make sure that the load is not set too high. 7.Once the proper output voltage is established, adjust the loads within the operating range and observe the output voltage regulation, ripple voltage, efficiency and other parameters. 8. Connect the dongle and control the output voltages from the GUI. See “LTpowerPlay QUICK START” session for details. 3.Make sure RUN switch (SW4) is OFF. 2 dc2291af DEMO MANUAL DC2291A CONNECTING A PC TO DC2291A You can use a PC to reconfigure the power management features of the LTC3882 such as: nominal VOUT, margin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIO and other functionality. The DC1613A dongle may be plugged in regardless of whether or not VIN is present. Dongle can be hot plugged. +12V POWER SUPPLY USB CABLE VIN USB TO I2C/PMBUS DONGLE DC1613A 12-PIN CONNECTOR LTC3882 DEMO BOARD DC2291A VOUT0 LOAD DC2291A F01 Figure 1. Demo Setup with PC dc2291af 3 DEMO MANUAL DC2291A QUICK START PROCEDURE Figure 2. Power Test Setup 4 dc2291af DEMO MANUAL DC2291A QUICK START PROCEDURE COMBINING DC2291A WITH OTHER DIGITAL POWER DEMO BOARDS n Measure VIN across the input ceramic capacitor (C6). Measure VOUT across the output ceramic capacitor (C38); The DC2291A may be plugged together in a multi-board array with other LTC power system management boards using J12 and J13. n MEASURING EFFICIENCY (SEE FIGURE 4) MEASURING OUTPUT RIPPLE VOLTAGE To accurately measure efficiency of any configuration, do the following: An accurate ripple measurement may be performed by using the configuration across C50 as shown in Figure 3. n Set JP5 and JP7 on the “OFF” position; Connect external 5V supply to VDR and VCC turrets and measure its input current; + – COUT VOUT GND Figure 3. Measuring Output Voltage Ripple 100 95 90 EFFICIENCY (%) n Add the loss from external 5V supply into the efficiency calculation. 85 80 75 70 65 0 20 40 60 80 100 LOAD CURRENT (A) 120 140 DC2291A F04 Figure 4. Typical Efficiency Curves of DC2291A, VIN = 12V, V0 = 1.0V, FSW = 450kHz, CCM dc2291af 5 DEMO MANUAL DC2291A QUICK START PROCEDURE 10A/DIV 10mV/DIV Figure 5. Load Transient Waveform of DC2291A, VIN = 12V, V0 = 1.0V, FSW = 450kHz, 0% to 25% (0A to 35A) Load Step Figure 6. Thermal Picture of DC2291A, VIN = 12V, V0 = 1.0V, IO = 140A, FSW = 450kHz, 400LFM Airflow, TA = 25°C 6 dc2291af DEMO MANUAL DC2291A LTpowerPlay SOFTWARE GUI LTpowerPlay is a powerful Windows-based development environment that supports Linear Technology’s power system management ICs, including the LTC3880, LTC3882, LTC3883, LTM®4676, LTC2974, LTC2978 etc. The software supports a variety of different tasks. You can use LTpowerPlay to evaluate Linear Technology ICs by connecting to a demo board system. LTpowerPlay can also be used in an offline mode (with no hardware present) in order to build a multichip configuration file that can be saved and reloaded at a later time. LTpowerPlay provides unprecedented diagnostic and debug features. It becomes a valuable diagnostic tool during board bring-up to program or tweak the power management scheme in a system, or to diagnose power issues when bringing up rails. LTpowerPlay utilizes the DC1613A USB-to-SMBus controller to communicate with one of many potential targets, including the LTC3882’s DC2291A demo system, or a customer board. The software also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. The LTpowerPlay software can be downloaded from: http://www.linear.com/LTpowerPlay To access technical support documents for LTC Digital Power Products visit Help. View online help on the LTpowerPlay menu. Figure 7. LTpowerPlay Main Interface dc2291af 7 DEMO MANUAL DC2291A LTpowerPlay QUICK START PROCEDURE The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTC3882. 1.Download and install the LTpowerPlay GUI: d. If you want to change the output voltage to a different value, like 1.2V. In the Config tab, type in 1.2 in the VOUT_COMMAND box, like this: http://www.linear.com/LTpowerPlay 2.Launch the LTpowerPlay GUI. a. The GUI should automatically identify the DC2291A. The system tree on the left hand side should look like this: b. A green message box shows for a few seconds in the lower left hand corner, confirming that the LTC3882 is communicating: Then, click the “W” (PC to RAM) icon to write these register values to the LTC3882. After finishing this step, you will see the output voltage will change to 1.2V. If the write is successful, you will see the following message: c. In the Toolbar, click the “R” (RAM to PC) icon to read the RAM from the LTC3882. This reads the configuration from the RAM of LTC3882 and loads it into the GUI. e. You can save the changes into the NVM. In the tool bar, click “RAM to NVM” button: f. Save the demo board configuration to a (*.proj) file. Click the Save icon and save the file. Name it whatever you want. 8 dc2291af DEMO MANUAL DC2291A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 2 CFFW1, CFFW2 CAP., 22pF, C0G, 50V, 10%, 0402 KEMET, C0402C220K5GACTU 2 1 CIN1 CAP., TANT., 22μF, X5R, 35V, 20%, 7343 AVX, TPSY226M035R0200 3 8 C6, C10, C33, C34, C66, C67, C86, C87 CAP., 22μF, X5R, 25V, 10%, 1206 MURATA, GRM31CR61E226KE15L 4 1 CIN5 CAP., 10μF, X5R, 35V, 20%, 1206 TAIYO YUDEN, GMK316BJ106ML-T 5 2 COUT9, COUT7 CAP., 47μF, X5R, 16V, 20%, 1206 TDK, C3216X5R1C476M160AB 6 4 C3, C4, C24, C46 CAP., OSCON, 330μF, 16V, 20%, F12 PANASONIC, 16SVP330M 7 2 C9, C25 CAP., 4.7μF, X5R, 6.3V, 20%, 0402 SAMSUNG, CL05A475MQ5NRNC 8 16 C12, C13, C14, C29, C38, C39, C40, C41, CAP., 100μF, X5R, 6.3V, 20%, 1206 C50, C54, C63, C64, C65, C74, C75, C91 MURATA, GRM31CR60J107ME39L 9 12 C17, C18, C19, C28, C55, C60, C69, C76, CAP., POSCAP, 470μF, 2.5V, 0.007Ω, C81, C82, C99, C100 4400mA, D2E CASE PANASONIC, 2R5TPE470M7 10 4 C20, C42, C58, C85 CAP., 0.22μF, X5R, 16V, 10%, 0402 TDK, C1005X5R1C224K050BB 11 1 C21 CAP., 2200pF, X7R, 50V, 10%, 0402 MURATA, GRM155R71H222KA01D 12 1 C22 CAP., 220pF, X7R, 50V, 10%, 0402 MURATA, GRM155R71H221KA01D 13 1 C30 CAP., 47pF, NP0, 25V, 10%, 0402 MURATA, GRM1555C1E470KA01D 14 4 L1, L2, L3, L4 IND., PWR., 0.17μH, 10%, 61A COOPER BUSSMANN, FP1007R3-R17-R 15 4 R2, R3, R15, R110 RES., 24.9k, 1/16W, 1%, 0402 VISHAY, CRCW040224K9FKED 16 5 R29, R31, R37, R42, R64 RES., 24.9k, 1/10W, 1%, 0603 VISHAY,CRCW060324K9FKEA 17 9 R5, R25, R41, R45, R109, R114, R115, R116, R117 RES., 0Ω, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 18 5 R24, R51, R71, R73, R83, RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA 19 4 R7, R27, R93, R111 RES., 2.67k, 1/16W, 1%, 0402 VISHAY, CRCW04022K67FKED 20 1 R9 RES., 180Ω, 1/16W, 1%, 0402 VISHAY, CRCW0402180RFKED 21 7 R10, R11, R13, R19, R20, R43, R86 RES., 10k, 1/10W, 1%, 0603 VISHAY, CRCW060310K0FKEA 22 1 R12 RES., 7.32k, 1/16W, 1%, 0402 VISHAY, CRCW04027K32FKED 23 2 R14, R17 RES., 2k, 1/10W, 1%, 0603 VISHAY, CRCW06032K00FKEA 24 9 R26, R57, R58, R59, R60, R63, R103, R105, R107 RES., 1k, 1/16W, 1%, 0402 VISHAY, CRCW04021K00FKED 25 1 R30 RES., 4.32k, 1/10W, 1%, 0603 VISHAY, CRCW06034K32FKEA 26 3 R32, R44, R65 RES., 5.76k, 1/10W, 1%, 0603 VISHAY, CRCW06035K76FKEA 27 1 R38 RES., 9.09k, 1/10W, 1%, 0603 VISHAY, CRCW06039K09FKEA 28 4 U1, U3, U4, U6 I.C., MODULE, 60A, 31-LEAD, CLIP BOND PQFN, SPS, 5 × 5mm FAIRCHILD SEMI., FDMF5820DC 29 1 U2 I.C., LTC3882EUJ#PBF, QFN, 6 × 6mm LINEAR TECH., LTC3882EUJ#10EG-1PBF-ES 30 1 U8 I.C., LTC3882EUJ#PBF, QFN, 6 × 6mm LINEAR TECH., LTC3882EUJ#10EH-1PBF-ES dc2291af 9 DEMO MANUAL DC2291A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Additional Demo Board Circuit Components 1 10 C5, C52, C53, C56, C68, C51, C11, C36, C71, C88 CAP., 0.1μF, X7R, 16V, 10%, 0402 AVX, 0402YC104KAT2A 2 3 COUT8, COUT10, C45 CAP., 0.1μF, X7R, 16V, 10%, 0603 AVX, 0603YC104KAT2A 3 1 C59 CAP., 0.1μF, X5R, 16V, 10%, 0805 AVX,0805YD104KAT2A 4 13 C1, C2, C7, C8, C31, C35, C47, C57, C61, C77, C89, C90, C97 CAP., 1μF, X5R, 10V, 20%, 0402 MURATA, GRM155R61A105ME15D 5 1 C49 CAP., 1μF, X5R, 16V, 10%, 0805 AVX, 0805YD105KAT2A 6 10 C5, C52, C53, C56, C68, C51, C11, C36, C71, C88 CAP., 0.1μF, X7R, 16V, 10%, 0402 AVX, 0402YC104KAT2A 7 3 COUT8, COUT10, C45 CAP., 0.1μF, X7R, 16V, 10%, 0603 AVX, 0603YC104KAT2A 8 1 C59 CAP., 0.1μF, X5R, 16V, 10%, 0805 AVX,0805YD104KAT2A 9 13 C1, C2, C7, C8, C31, C35, C47, C57, C61, C77, C89, C90, C97 CAP., 1μF, X5R, 10V, 20%, 0402 MURATA, GRM155R61A105ME15D 10 1 C49 CAP., 1μF, X5R, 16V, 10%, 0805 AVX, 0805YD105KAT2A 11 4 C32, C48, C73, C98 CAP., 0.01μF, X7R, 16V, 10%, 0402 AVX, 0402YC103KAT2A 12 1 C44 CAP., 0.01μF, X7R, 50V, 10%, 0603 AVX, 06035C103KAT2A 13 2 C37, C70 CAP., 56pF, NP0, 25V, 10%, 0402 KEMET, C0402C560K3GACTU 14 1 D5 LED, YELLOW GREEN, WATER CLEAR, 571nm, 0603 LITE-ON, LTST-C193KGKT-5A 15 3 D8, D9, D12 DIODE, ULTRA LOW SCHOTTKY RECTIFIER, 20V, 0.5A, SOD-882 NXP SEMI., PMEG2005AEL,315 16 1 D10 LED, RED, WATER CLEAR, 631nm, 0603 LITE-ON, LTST-C193KRKT-5A 17 2 L5, L6 IND., PWR., SHIELDED, 4.7μH, 20% COILCRAFT, XFL4020-472MEC 18 4 Q1, Q2, Q3, Q6 XSTR., GP, PNP, 40V, 0.2A, SC75-3, SOT-416 ON SEMI, MMBT3906TT1G 19 1 Q4 XSTR., MOSFET, SWITCHING, PWR, N-CH, 30V, 30A, LFPAK RENESAS ELECTRONICS, RJK0305DPB-00-J0 20 3 Q19, Q20, Q22 XSTR., MOSFET, P-CH, 20V, 5.9A, SOT-23, TO-236 VISHAY, SI2365EDS-T1-GE3 21 1 Q21 XSTR., MOSFET, N-CH, 60V, 115mA, SOT-23 DIODES INC., 2N7002-7-F 22 1 RPG1 RES., 100k, 1/16W, 1%, 0402 VISHAY, CRCW0402100KFKED 23 2 R1, R4 RES., 1Ω, 1/16W, 1%, 0402 VISHAY, CRCW04021R00FKED 24 2 R46, R49 RES., SENSE, 0.01Ω, 1W, 1%, 2512 PANASONIC, ERJM1WSF10MU 25 2 R66,R67 RES., 619k, 1/16W, 1%, 0402 VISHAY, CRCW0402619KFKED 26 2 R68, R69 RES., 84.5k, 1/16W, 1%, 0402 VISHAY, CRCW040284K5FKED 27 2 R70, R16 RES., 10Ω, 1/10W, 1%, 0603 VISHAY, CRCW060310R0FKEA 10 dc2291af DEMO MANUAL DC2291A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 28 2 R76, R77 RES., 4.99k, 1/10W, 1%, 0603 VISHAY, CRCW06034K99FKEA 29 1 R81 RES., 200Ω, 1/10W, 1%, 0603 VISHAY, CRCW0603200RFKEA 30 1 R84 RES., 127Ω, 1/10W, 1%, 0603 VISHAY, CRCW0603127RFKEA 31 1 R87 RES., 15.8k, 1/10W, 1%, 0603 VISHAY, CRCW060315K8FKEA 32 0 R23, R33, R34, R35, R36, R39, R40, R47, R48, R50, R52, R53, R55, R74, R75, R78, R82, R92, R100 (OPT) RES., OPTION, 0603 33 0 D7 (OPT) DIODE, OPTION, SOD-323 34 1 SW4 SWITCH, SUB-MINIATURE SLIDE, DPDT, 6VDC, 0.3A, THRU-HOLE 35 1 U5 I.C., EEPROM SERIAL-I2C, 2K-BIT, TSSOP-8 MICROCHIP, 24LC025-I/ST 36 1 U7 I.C., DUAL 1A, 17V, 5μA 1MHz SYNCH BUCK CONVERTER FOR THE 3622 AND DUAL 1A, 17V, 5μA 2.25MHz SYNCH BUCK CONVERTER 37 0 C23, C43, C72, C92, C93, C94, C95, C96 CAP., OPTIONAL 1206 38 0 C15, C16, C26, C27, C79, C80, C83, C84 CAP., OPTIONAL D2E CASE C&K COMPONENTS, JS202011CQN LINEAR TECH., LTC3622EDE#PBF Hardware for Demo Board Only 1 26 E1-E26 TEST POINT, TURRET, .094" MTG. HOLE MILL-MAX, 2501-2-00-80-00-00-07-0 2 2 JP5, JP7 CONN., HEADER, 1 × 3, 2mm WURTH ELEKTRONIK 62000311121 3 2 JP5, JP7 SHUNT, 2mm SAMTEC, 2SN-BK-G 4 6 J1, J2, J3, J4, J18, J19 STUD, FASTENER, #10-32 PENN ENGINEERING, KFH-032-10 5 12 J1, J2, J3, J4, J18, J19 (×2 ) NUT, BRASS 10-32 ANY #10-32M/S BR PL 6 6 J1, J2, J3, J4, J18, J19 RING, LUG, CRIMP, #10 KEYSTONE, 8205 7 6 J1, J2, J3, J4, J18, J19 WASHER, TIN PLATED BRASS ANY #10 EXT BZ TN 8 1 J11 CONN., HEADER, 2 × 6, 2mm, STR DL, THRU-HOLE FCI, 98414-G06-12ULF 9 1 J12 CONN., HEADER, 2 × 7, 2mm, R/A (F) SULLINS CONNECTOR SOLUTIONS, NPPN072FJFN-RC 10 1 J13 CONN., HEADER, 2 × 7, 2mm, R/A (M) MOLEX, 87760-1416 11 2 J15, J16 CONN., BNC PC MOUNT RECEPT. JACK, 50Ω, TF-4 POST CONNEX, 112404 12 1 J17 CONN., HEADER, SHROUDED, 4POS, 2mm, HIROSE, DF3A-4P-2DSA R/A THRU-HOLE 13 4 MT1, MT2, MT3, MT4 STANDOFF, NYLON, SNAP-ON, 0.500" KEYSTONE, 8833 dc2291af 11 A B C D VIN E4 E3 E2 J2 VDD25_1 VDD33_1 VDD25_1 VDD33_1 GND GND 7V-14V J1 0603 R17 2k 1K R26 WP RUN0 GPIO0B SHARE_CLK SYNC ALERTB SDA SCL C3 330uF 16V R39 OPT 0603 R37 24.9k R35 OPT R33 OPT 0603 R31 24.9k 0603 R29 24.9k R40 OPT 5 0603 PHAS_CFG_1 R38 9.09k FREQ_CFG_1 R36 OPT VOUT1_CFG_1 R34 OPT 0603 VOUT0_CFG_1 R32 5.76k 0603 ASEL1_1 R30 4.32k ASEL0_1 Address: 0x43 R23 OPT R20 10k 0603 R19 10k 0603 0603 R14 2k R13 10k 0603 R11 10k 0603 R10 10k 0603 VDD25_1 VDD33_1 + VIN + IAVG0_GND IAVG0 C4 330uF 16V R1 ASEL1_1 ASEL0_1 WP SYNC SHARE_CLK RUN0 GPIO0B ALERTB SDA SCL C5 0.1uF 6.3V C37 56pF PHAS_CFG_1 FREQ_CFG_1 VOUT1_CFG_1 VOUT0_CFG_1 1 VDD33_1 9 31 39 21 20 19 18 17 16 23 8 24 15 14 13 12 11 10 PHAS_CFG FREQ_CFG VOUT1_CFG IAVG1 IAVG0 U2 LTC3882EUJ VOUT0_CFG ASEL1 ASEL0 WP SYNC C8 1uF VDD25_1 SHARE_CLK RUN1 RUN0 GPIO1 GPIO0 ALERT SDA SCL C7 1uF VDD33_1 4 VIN R41 0 4 4 VCC 26 E1 25 VDD33 22 VDD25 IAVG_GND 5 BG1/EN1 TG1/PWM1 ISENSE1+ ISENSE1- VSENSE1+ FB1 COMP1 TSNS1 TSNS0 COMP0 FB0 VSENSE0- VSENSE0+ ISENSE0- ISENSE0+ BG0/EN0 TG0/PWM0 TG1_1 27 28 ISNS1+_1 P10 ISNS1-_1 32 VDR C35 1uF R58 1k 1 28 15 34 35 27 2 31 1 28 15 34 35 27 2 R2 24.9K GL R15 24.9K PGND PGND PGND GL GL ZCD# 32 GL 1uF 29 U1 AGND 1uF 3 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0402. 2. INSTALL SHUNTS AS SHOWN. VIN PGND VIN U3 FDMF5820DC AGND VDR FDMF5820DC PGND C31 VSENSE0+_1 EN/FAULT# PWM C52 0.1uF PGND PGND PGND GL GL ZCD# EN/FAULT# PWM C53 0.1uF 31 180 R9 R57 1k VDR 2200pF C21 VFB0_1 R60 1k R59 1k C2 1uF C1 4 NOTE: UNLESS OTHERWISE SPECIFIED P4 P3 VDD33_1 VSENSE0+_1 COMP0_1 TSNS1_1 VDR C22 220pF 47pF TSNS0_1 C30 COMP0_1 R12 7.32k VSENSE0-_1 33 34 30 29 3 2 1 40 35 P9 VSENSE0+_1 ISNS0-_1 36 ISNS0+_1 38 TG0_1 37 6 7 C9 4.7uF P2 P1 VDR 3 VCC VCC 30 TMON PGND 13 30 TMON VINSNS GND 41 3 VCC PGND 14 3 12 32 PGND 12 PGND 14 24 AGND SW PVCC SW SW 25 SW VDR 9 20 19 18 17 16 7 5 33 11 10 20 19 18 17 16 7 5 33 11 10 C36 L1 L2 C42 R27 1.5k 0.22uF 0.17uH FP1007R3-R17-R 100nF C34 22uF 1206 C33 22uF 1206 VIN C32 10nF C48 10nF TSNS1_1 0.22uF C20 R7 1.5k VIN TSNS0_1 C10 22uF 1206 0.17uH FP1007R3-R17-R 100nF 0 R25 0 C11 R5 C6 22uF 1206 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE SW SW SW SW SW PHASE BOOT VIN VIN VIN SW SW SW SW SW PHASE BOOT VIN VIN VIN VIN 2 2 LINEAR TECHNOLOGY 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 LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 24 PGND 13 SW AGND PGND AGND 25 29 PVCC 26 4 AGND 6 NC SW 23 6 NC SW 23 SW 26 8 VIN SW 22 VIN SW 21 9 VIN SW 8 VIN SW 22 12 21 5 C13 100uF 1206 C39 100uF 1206 C14 C29 C41 100uF 1206 C50 C54 SCALE = NONE C26 OPT C28 470uF + C18 470uF C60 470uF + C55 470uF + E6 E5 GND GND VOUT0 VOUT0 VOUT0- VOUT0+ J19 J4 J3 J18 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only C27 OPT + 0603 R24 0 0603 R16 0 C17 470uF + DATE HAORAN W. 12-2-15 APPROVED DATE: N/A SIZE 1 DEMO CIRCUIT 2291A LTC3882EUJ Wednesday, December 02, 2015 IC NO. SHEET 1 2 OF 4 REV. HIGH EFFICIENCY HIGH DENSITY POLY-PHASE DC/DC STEP DOWN CONVERTER WITH POWER SYSTEM MANAGEMENT HAORAN W. TITLE: SCHEMATIC + C19 470uF C16 OPT C15 OPT + + + + PRODUCTION VOUT0 1 DESCRIPTION REVISION HISTORY TECHNOLOGY 100uF 1206 HZ 100uF 1206 VOUT0 VSENSE0-_1 VSENSE0+_1 100uF 1206 PCB DES. 100uF 1206 C40 100uF 1206 2 REV APP ENG. APPROVALS C38 100uF 1206 C43 MMBT3906LT1G OPT 1206 Q6 C12 100uF 1206 C23 MMBT3906LT1G OPT 1206 Q1 __ ECO A B C D DEMO MANUAL DC2291A SCHEMATIC DIAGRAM dc2291af A B C D VDD25_2 VDD33_2 C46 330uF 16V R52 OPT R50 OPT R47 OPT R55 OPT 0603 R64 24.9k 0603 R42 24.9k + R53 5 OPT PHAS_CFG_2 R51 0 FREQ_CFG_2 R48 OPT SDA SCL ASEL1_2 ASEL0_2 R117 0 R116 0 R115 0 ALERTB R114 0 1 IAVG0_GND IAVG0 PHAS_CFG_2 FREQ_CFG_2 VOUT1_CFG_2 VOUT0_CFG_2 WP SYNC SHARE_CLK VOUT1_CFG_2 R100OPT R4 RUN0 GPIO0B C24 330uF 16V 0603 VOUT0_CFG_2 R65 5.76k 0603 ASEL1_2 R44 5.76k ASEL0_2 Address: 0x44 E8 VDD25_2 VDD25_2 VDD33_2 E7 + VIN C70 56pF C51 4.7uF 6.3V VDD33_2 31 39 21 20 19 18 17 16 23 8 24 15 14 13 12 11 10 9 PHAS_CFG FREQ_CFG VOUT1_CFG IAVG1 IAVG0 U8 LTC3882EUJ VOUT0_CFG ASEL1 ASEL0 WP SYNC C57 1uF VDD25_2 SHARE_CLK RUN1 RUN0 GPIO1 GPIO0 ALERT SDA SCL C47 1uF VDD33_2 4 4 4 VCC BG1/EN1 TG1/PWM1 ISENSE1+ ISENSE1- VSENSE1+ FB1 COMP1 TSNS1 TSNS0 COMP0 FB0 VSENSE0- VSENSE0+ ISENSE0- ISENSE0+ BG0/EN0 TG0/PWM0 1 28 27 32 33 34 30 29 3 2 1 40 35 36 P12 VSENSE0+_1 TSNS1_2 TSNS0_2 COMP0_1 VSENSE0-_1 P8 VDR R107 R105 VDR 1k 1k 28 15 34 35 27 2 31 1 28 34 35 27 2 31 37 P7 1k R103 C90 1uF 1k R63 VDD33_2 VDR R3 24.9K GL R110 24.9K PGND PGND PGND GL GL ZCD# 3 GL EN/FAULT# PWM C68 0.1uF PGND PGND PGND GL GL ZCD# EN/FAULT# PWM C56 0.1uF 15 VSENSE0+_1 P11 P6 C97 1uF 38 6 7 C25 4.7uF P5 VDR 3 1uF 4 U4 AGND 1uF C89 PGND VIN U6 FDMF5820A AGND VIN FDMF5820A PGND VDR 8 C77 29 VIN 25 VDD33 26 VCC 22 VDD25 IAVG_GND 5 PGND 13 30 TMON VINSNS GND 41 30 TMON 3 VCC PGND 14 3 VCC PGND 14 PGND 12 SW 26 SW 25 PGND 13 32 AGND PGND 12 32 AGND SW 24 AGND SW PVCC SW 25 29 PVCC 26 4 AGND VDR 23 6 9 20 19 18 17 16 7 5 33 11 10 20 19 18 17 16 7 5 33 11 10 C88 L4 C85 R111 1.5k 0.22uF 0.17uH FP1007R3-R17-R 100nF C86 22uF 1206 C87 22uF 1206 TSNS1_2 0.22uF C58 R93 1.5k R109 0 L3 VIN C73 10nF VIN C98 10nF TSNS0_2 0.17uH FP1007R3-R17-R 100nF R45 0 C71 C66 22uF 1206 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE SW SW SW SW SW PHASE BOOT VIN VIN VIN SW SW SW SW SW PHASE BOOT VIN VIN VIN C67 22uF 1206 2 2 LINEAR TECHNOLOGY 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 LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 23 SW 24 VIN SW 6 NC SW VIN SW 21 9 VIN 22 NC SW 8 VIN SW 22 SW 21 5 C64 100uF 1206 C63 100uF 1206 OPT 1206 C92 100uF 1206 C91 C95 OPT 1206 C94 OPT 1206 MMBT3906LT1G C74 100uF 1206 C72 OPT 1206 MMBT3906LT1G C75 SCALE = NONE HAORAN W. TITLE: SCHEMATIC C82 470uF TECHNOLOGY + C84 OPT C99 470uF + C100 470uF + C80 OPT + 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only + C79 OPT + C83 OPT + C76 470uF C69 470uF C81 470uF + + + VOUT0 DATE: N/A SIZE 1 DEMO CIRCUIT 2291A LTC3882EUJ Monday, November 30, 2015 IC NO. SHEET 2 2 OF 4 REV. HIGH EFFICIENCY HIGH DENSITY POLY-PHASE DC/DC STEP DOWN CONVERTER WITH POWER SYSTEM MANAGEMENT HZ PCB DES. OPT 1206 C93 OPT 1206 C96 100uF 1206 C65 100uF 1206 APP ENG. APPROVALS Q2 Q3 1 A B C D DEMO MANUAL DC2291A 13 dc2291af A B C GND E22 GND E21 5 VIN CIN1 22uF 35V 7343 VIN + C61 1uF INTVCC 3 JP5 OFF 1 3 2 VDR JP7 2 1 ON OFF CIN5 10uF VCC 25V 1206 ON 11 6 4 3 9 7 13 1 INTVCC ILIM PHASE 4 FB2 SW2 PGOOD2 FB1 SW1 PGOOD1 MODE/SYNC RUN2 VIN2 RUN1 VIN1 LTC3622EDE GND 15 D U7 4 10 8 5 12 14 2 D12 2 R67 619k 1% L6 4.7uH 1 R66 619k 1% L5 4.7uH RPG1 100k 1% INTVCC R68 84.5K 1% CFFW2 22pF RUN0 R69 84.5K 1% CFFW1 22pF COUT9 47uF 1206 COUT7 47uF 1206 VCC 3 COUT10 0.1uF 16V 0603 VDR COUT8 0.1uF 16V 0603 3 E26 CUSTOMER NOTICE E23 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. E24 2 C59 0.1uF 0805 1 J16 SCALE = NONE 0.01 TECHNOLOGY 2512 R49 J15 IOUT TST 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only NOTE: PULSE OUT 10mV / AMP C49 1uF 0805 1 VOUT0 1 DATE: N/A SIZE 1 DEMO CIRCUIT 2291A LTC3882EUJ Monday, November 30, 2015 IC NO. SHEET 3 2 OF 4 REV. HIGH EFFICIENCY HIGH DENSITY POLY-PHASE DC/DC STEP DOWN CONVERTER WITH POWER SYSTEM MANAGEMENT HAORAN W. TITLE: SCHEMATIC APP ENG. R46 0.01 2512 HZ VOUT0 R43 10K 0603 4 PCB DES. APPROVALS VOUT0 GND DO NOT EXCEED 5% DUTY CYCLE! PULSE IN LINEAR TECHNOLOGY 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 LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. GND Max. 500mA VDR GND Max. 500mA VCC E25 E11 E9 Q4 RJK0305DPB DYNAMIC LOAD CIRCUIT 2 2 3 4 5 5 1 2 3 14 2 3 4 5 5 A B C D DEMO MANUAL DC2291A dc2291af Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. A B C 5 GND E12 4 3 2 1 SDA SCL WP VCC 24LC025-I/ST VSS A2 A1 A0 U5 TO DC1613A AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA J11 TO DC2086A AUX3V4 SCL GND SDA J17 100nF C45 0603 3V3 5 6 7 GPIO0B EESDA EESCL EEWP 8 AUXVCC 1 2 3 4 5 6 7 8 9 10 11 12 4 3 2 1 VDD33_2 1 1 1 D9 D8 D5 3V3 R76 4.99K 0603 2 2 E10 4 2N7002A Q21 GREEN GPIO0 R81 200 0603 R77 4.99K 0603 AUX3V4 4 3 2 ALERTB OPT OPT R74 R75 ALERTB SCL E14 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V SDA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 3V3 D10 SCL R84 127 0603 ALERTB RED SI2365EDS Q20 J13DEMO HEADER (M) SDA E13 ALERTB E15 SYNC VIN 3V3 VIN SHARE_CLK 3 0603 R87 15.8k 0603 Q22 SI2365EDS R86 10K 3 3 R92 OPT Q19 SI2365EDS 3V3 2 2 VDD33_2 VDD33_1 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V J12 DEMO HEADER (F) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0603 R71 0 0603 R73 0 D7 OPT OFF 5 ON SW4 RUN0 2 C44 10nF 0603 R70 10 0603 GPIO0B SGND RUN0 RUN0 E19 GPIO0B E20 E18 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE 2 LINEAR TECHNOLOGY 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 LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. SCALE = NONE HAORAN W. TITLE: SCHEMATIC APP ENG. TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only 1 DATE: N/A SIZE 1 DEMO CIRCUIT 2291A LTC3882EUJ Monday, November 30, 2015 IC NO. SHEET 4 2 OF 4 REV. HIGH EFFICIENCY HIGH DENSITY POLY-PHASE DC/DC STEP DOWN CONVERTER WITH POWER SYSTEM MANAGEMENT HZ PCB DES. APPROVALS PSM STACKING CONNECTORS: J12, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC J13, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416 R78 OPT R83 0 0603 R82 OPT 1206 E17 SYNC E16 SHARE_CLK ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN 2 3 VDD33_1 3 2 1 1 4 1 6 3 D 5 A B C D DEMO MANUAL DC2291A dc2291af 15 DEMO MANUAL DC2291A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation 16 Linear Technology Corporation dc2291af LT 0416 • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2016