DEMO MANUAL DC2165A LTC3884EUK High Efficiency, Dual-Output, Synchronous Buck Converter with Power System Management DESCRIPTION Demonstration circuit 2165A is a high efficiency, high density, dual-output buck converter with a 4.5V to 14V input range. The output voltage is adjustable from 0.5V to 5.5V, and each output can supply up to 30A of load current when the output voltage is within a 0.5V to 1.8V range. This demo board features the LTC®3884, a dual-output poly phase step-down controller with ultra-low DCR sensing and incorporates digital power system management. The LTC3884 data sheet must be read in conjunction with this demo board manual for this demonstration circuit DC2165A. The DC21065A powers up to default settings and produces power based on configuration resistors or with its non-volatile 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 part, download the PERFORMANCE SUMMARY PARAMETER 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 in EEPROM, view telemetry of voltage, current, temperature and fault status. GUI Software LTpowerPlay Download The software can be downloaded from: http://www.linear.com/LTpowerPlay For more details and instructions of LTpowerPlay, please refer to LTpowerPlay GUI for LTC3884 demo manual. Design files for this circuit board are available at http://www.linear.com/demo/DC2165 L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Specifications are at TA = 25°C CONDITIONS Input Voltage Range VALUE 4.5V to 14V Output Voltages, VOUT0/VOUT1 VIN = 4.5V to 14V, IOUT0/IOUT1 = 0A to 30A Default: 1V Maximum Output Current, IOUT0/IOUT1 VIN = 4.5V to 14V, VOUT0/VOUT1 = 0.5V to 1.8V 30A Typical Efficiency VIN = 12V, VOUT0/VOUT1 = 1.0V, IOUT0/IOUT1 = 30A 86.5% Peak Efficiency VIN = 12V, VOUT0/VOUT1 = 1.0V 88.8% Default Switching Frequency 425kHz dc2165af 1 DEMO MANUAL DC2165A QUICK START PROCEDURE Demonstration circuit 2165A is easy to set up to evaluate the performance of the LTC3884. Refer to Figure 1 for the proper measurement equipment setup and follow the procedure below. 8. Once the proper output voltages are established, adjust the loads within the operating range and observe the output voltage regulation, ripple voltage and other parameters. 1. With power off, connect the input power supply to VIN (4.5V to 14V) and GND (input return). 9. Connect the dongle and control the output voltages from the GUI. See LTpowerPlay Quick Start Guide session for details. 2. Connect the output load between VOUT0/VOUT1 and GND (Initial load: no load). 3. Connect the DVMs to the input and outputs. 4. Check the default jumper/switch position: JP1: OFF, JP4: OFF, JP5: INT, SW1: OFF, SW2: OFF. 5. Turn on the input power supply up to 12V. NOTE: Make sure that the input voltage does not exceed 14V. 6. Turn on the switches: SW1: ON, SW2: ON. 7. Check for the proper output voltages from VOUT0+ to VOUT0– and VOUT1+ to VOUT1–. NOTE: When measuring the output or input voltage ripple, do not use the long ground lead on the oscilloscope probe. See Figure 2 for the proper scope probe technique. Short, stiff leads need to be soldered to the (+) and (–) terminals of an output capacitor. The probe’s ground ring needs to touch the (–) lead and the probe tip needs to touch the (+) lead. Connecting a PC to DC2165A You can use a PC to reconfigure the power management features of the LTC3884 such as: nominal VOUT, margin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIOs and other functionality. The DC2165A dongle may be plugged when VIN is present. V + 1mΩ + V VOUT0 LOAD0 (30A) + + + V A LOAD1 (30A) VOUT1 VIN 4.5V TO 14V V + 1mΩ + V Figure 1. Proper Measurement Equipment Setup 2 dc2165af DEMO MANUAL DC2165A QUICK START PROCEDURE + – COUT VOUT GND Figure 2. Measuring Output Voltage Ripple INPUT POWER SUPPLY USB CABLE USB TO I2C/PMBUS DONGLE DC1613A VIN 12-PIN (J7) CONNECTOR VOUT0 LTC3884 DEMO BOARD DC2165A VOUT1 LOAD0 LOAD1 Figure 3. Demo Setup with PC dc2165af 3 DEMO MANUAL DC2165A QUICK START PROCEDURE 95 EFFICIENCY (%) 90 85 80 75 1.5VOUT 1VOUT 0 5 10 15 20 25 OUTPUT LOAD CURRENT (A) 30 DC2165 F04 Figure 4. Efficiency vs Load Current at VIN = 12V, fSW = 425kHz VOUT0 (20MHz BW) (10mV/DIV) Figure 5. Output Voltage Ripple at VIN = 12V, VOUT0 = 1V, IOUT0 = 30A 4 dc2165af DEMO MANUAL DC2165A QUICK START PROCEDURE VOUT0 (20MHz BW) (20mV/DIV) 0A TO 7.5A LOAD STEP Figure 6. Transient Response at VIN = 12V, VOUT0 = 1V, ∆IOUT0 = 7.5A Figure 7. Thermal Performance at VIN = 12V, VOUT0 =1 .0V, IOUT0 = 30A, VOUT1 = 1.0V, IOUT1 = 30A, TA = 23.6°C, No Airflow dc2165af 5 DEMO MANUAL DC2165A LTpowerPlay QUICK START GUIDE LTpowerPlay is a powerful Windows-based development environment that supports Linear Technology power system management ICs, including the LTM4676, LTC3880, LTC3883, LTC3884, LTC2974 and LTC2978. 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 LTM4676, the LTC3880, LTC3884 and the LTC3883’s 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. The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTC3884. 1. Download and install the LTpowerPlay GUI: http://www.linear.com/LTpowerPlay Figure 8. LTpowerPlay Main Interface 6 dc2165af DEMO MANUAL DC2165A LTpowerPlay QUICK START GUIDE 2. Launch the LTpowerPlay GUI. a. The GUI should automatically identify the DC2165A. 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 LTC3884 is communicating: c. In the Toolbar, click the “R” (RAM to PC) icon to read the RAM from the LTC3884. This reads the configuration from the RAM of LTC3884 and loads it into the GUI. d. If you want to change the output voltage to a different value, like 1.5V. In the Config tab, type in 1.5 in the VOUT_COMMAND box, like this: Then, click the “W” (PC to RAM) icon to write these register values to the LTC3884. After finishing this step, you will see the output voltage will change to 1.5V. dc2165af 7 DEMO MANUAL DC2165A LTpowerPlay QUICK START GUIDE If the write is successful, you will see the following message: e. You can save the changes into the NVM. In the tool bar, click “RAM to NVM” button, as following: f. Save the demo board configuration to a (*.proj) file. Click the Save icon and save the file with a preferred file name. PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER CAP, 1210 10μF 20% 35V X5R AVX 1210DD106MAT2A Required Circuit Components 1 4 CIN1, CIN2, CIN3, CIN4 2 10 COUT1, COUT2, COUT5, COUT6, CAP, 1210 100μF 20% 6.3V X5R COUT19, COUT20, COUT24, COUT25, C34, C35 AVX 12106D107MAT2A 3 8 COUT3, COUT4, COUT7, COUT8, COUT17, COUT18, COUT22, COUT23 CAP, 7343 330μF 20% 6.3V POSCAP PANASONIC 6TPF330M9L 4 5 C7, COUT21, COUT26, C41, C42 CAP, 0603 1μF 20% 25V X5R AVX 06033D105MAT2A 5 1 C1 CAP, 0603 2.2μF 20% 6.3V X5R AVX 06036D225MAT2A 6 2 C2, C32 CAP, 270μF 20% 16V OSCON PANASONIC 16SVPC270M 7 1 C3 CAP, 0805 1μF 10% 16V X7R AVX 0805YC105KAT2A 8 1 C4 CAP, 0603 4.7μF 10% 10V X5R AVX 0603ZD475KAT2A 0 1 C6 CAP, 0603 4.7μF 20% 25V X5R TDK C1608X5R1E475M080AC 10 2 C8, C15 CAP, 0603 0.1μF 10% 25V X7R AVX 06033C104KAT2A 11 2 C9, C16 CAP, 0603 220nF 10% 25V X7R TDK C1608X7R1E224K 12 3 C10, C12, C40 CAP, 0603 150pF 5% 50V NPO AVX 06035A151JAT2A 13 2 C11, C13 CAP, 0603 1500pF 5% 50V C0G MURATA GRM1885C1H152JA01D 14 4 C14, C17, C27, C28 CAP, 0603 10nF 10% 25V X7R AVX 06033C103KAT2A 15 2 C26, C39 CAP, 0603 100nF 20% 16V X7R AVX 0603YC104MAT2A 16 2 C30, C31 CAP, 1210 10μF 10% 16V X7R MURATA GRM32DR71C106KA01 17 2 D1, D2 DIODE, SCHOTTKY 30V, 100mA CENTRAL SEMI CMDSH-3-TR 18 4 D5, D6, D8, D9 LED, 0603 GREEN WURTH ELEKTRONIK 150060GS75000 19 1 D7 LED, 0603 RED WURTH ELEKTRONIK 150060SS75000 20 1 D12 DIODE, ULTRA LOW SCHOTTKY RECTIFIER NXP SEMI. PMEG2005AEL, 315 21 2 L1, L2 IND, 0.25μH WURTH ELEKTRONIK 744301025 8 dc2165af DEMO MANUAL DC2165A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 22 23 2 Q1, Q5 XSTR, POWER MOSFET INFINEON BSC050NE2LS 2 Q3, Q8 XSTR, POWER MOSFET INFINEON BSC010NE2LSI 24 2 Q7, Q10 XSTR, PNP GENERAL PURPOSE DIODES INC. MMST3906-7-F 25 2 Q19, Q20 XSTR, N-CHANNEL DMOS FET DIODES INC. DMP3130L-7 26 4 Q21, Q22, Q25, Q26 XSTR, N-CHANNEL DMOS FET DIODES INC 2N7002A-7 27 2 Q23, Q24 XSTR, MOSFET, N-CHANNEL 30V VISHAY SUD50N04-8M8P-4GE3 28 1 R1 RES, 2512 0.005Ω 1% 1W SUSUMU KRL3264E-C-R005-F-T5 29 1 R2 RES, 0603 1Ω 1% 1/10W VISHAY CRCW06031R00FKEA 30 10 R3, R4, R15, R19, R63, R65, R66, R91, R113, R114 RES, 0603 0Ω JUMPER VISHAY CRCW06030000Z0EA 31 4 R5, R16, R18, R21 RES, 0603 10Ω 1% 1/10W VISHAY CRCW060310R0FKEA 32 12 R6, R7, R8, R10, R29, R30, R33, R34, R77, R87, R98, R105 RES, 0603 10kΩ 5% 1/10W VISHAY CRCW060310K0JNEA 33 6 R9, R11, R12, R13, R72, R73 RES, 0603 4.99kΩ 1% 1/10W VISHAY CRCW06034K99FKEA 34 2 R14, R20 RES, 0603 715Ω 1% 1/10W VISHAY CRCW0603715RFKEA 35 2 R69, R70 RES, 0603 10Ω 5% 1/10W VISHAY CRCW060310R0JNEA 36 1 R78 RES, 0603 15.8kΩ 1% 1/10W VISHAY CRCW060315K8FKEA 37 4 R79, R80, R125, R130 RES, 0603 200Ω 5% 1/10W VISHAY CRCW0603200RJNEA 38 1 R81 RES, 0603 127Ω 1% 1/10W VISHAY CRCW0603127RFKEA 39 1 R89 RES, 0603 2Ω 5% 1/10W VISHAY CRCW06032R00JNEA 40 1 R90 RES, 2010 0Ω JUMPER VISHAY CRCW20100000Z0EA 41 1 R92 RES, 0603 3.3Ω 1% 1/10W VISHAY CRCW06033R30FKEA 42 1 R93 RES, 0603 154kΩ 1% 1/10W VISHAY CRCW0603154KFKEA 43 1 R94 RES, 0603 1MΩ 5% 1/10W VISHAY CRCW06031M00JNEA 44 2 R95, R96 RES, 0603 20kΩ 5% 1/10W VISHAY CRCW060320K0JNEA 45 1 R97 RES, 0603 681kΩ 1% 1/10W VISHAY CRCW0603681KFKEA 46 1 R99 RES, 0603 182Ω 1% 1/10W VISHAY CRCW0603182RFKEA 47 1 R100 RES, 0603 82.5Ω 1% 1/10W VISHAY CRCW060382R5FKEA 48 1 R101 RES, 2512 0.01Ω 1% 1W VISHAY WSL2512R0100FEA 49 1 R103 RES, VARIABLE 5kΩ BOURNS 3386P-1-502-LF 50 1 R104 RES, 0603 649Ω 1% 1/10W VISHAY CRCW0603649RFKEA 51 1 R107 RES, 0603 34.8kΩ 1% 1/10W VISHAY CRCW060334K8FKEA 52 2 SW1, SW2 SWITCH, SUBMINIATURE SLIDE C&K JS202011CQN 53 1 U1 IC, LTC3884 LINEAR TECH. LTC3884EUK#10E1-1PBF-ES 54 1 U3 IC, 24LC05-I/ST MICROCHIP 24LC025-I/ST 55 1 U4 IC, REGULATOR LINEAR TECH. LT1761ES5-SD#PBF 56 1 U5 IC, LTC6992 LINEAR TECH. LTC6992IS6-1#PBF 57 1 U6 IC, SINGLE OP AMP LINEAR TECH. LT1803IS5#PBF dc2165af 9 DEMO MANUAL DC2165A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Additional Demo Board Circuit Components 1 0 C5 CAP, 0603 OPTION OPTION 2 0 D10, D11 DIODE, SCHOTTKY 30V, 100mA OPTION CENTRAL SEMI CMDSH-3-TR OPTION 3 0 Q2, Q4, Q6, Q9 XSTR, POWER MOSFET OPTION OPTION 4 0 R17, R22, R23, R24, R25, R26, R27, R28, R31, R32, R35, R36, R37, R38, R39, R40, R42, R43, R45, R46, R61, R62, R64, R67, R68, R74, R75, R106, R126, R139, R142, R146, R147 RES, 0603 OPTION OPTION 5 0 R41, R44, R47, R48, R85, R86, R88 RES, 2010 OPTION OPTION 6 0 R102 RES, 2512 OPTION OPTION 1 26 E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13, E14, E20, E21, E22, E23, E24, E25, E26, E27, E28, E29, E30, E31 TURRET MILL MAX 2501-2-00-80-00-00-07-0 2 3 JP1, JP4, JP5 HEADER, SINGLE ROW 3-PIN WURTH ELEKTRONIK 62000311131 3 6 J1, J2, J3, J4, J5, J6 STUD, TEST PIN PEM KFH-032-10 4 1 J7 HEADER, 12-PIN 2mm STR DL FCI 98414-G06-12ULF 5 1 J8 CONN, SOCKET 14-PIN DUAL ROW R/A SULLINS INC. NPPN072FJFN-RC 6 1 J9 HEADER, 14-PIN DUAL ROW R/A MOLEX 87760-1416 7 3 J10, J11, J12 CONN, BNC, 5 PINS AMPHENOL CONNEX 112404 8 1 J16 HEADER, 4-PIN 2mm STR DL HIROSE DF3A-4P-2DSA 9 7 LUG RING, #10 KEYSTONE 8205 10 14 NUT, BRASS 10-32 ANY #10-32 11 7 WASHER, #10 TIN PLATED BRASS ANY #10 EXT BZ TN 12 4 MH1, MH2, MH3, MH4 STANDOFF, SNAP ON KEYSTONE 8834 13 3 XJP1, XJP4, XJP5 SHUNT WURTH ELEKTRONIK, 60800213421 Hardware 10 dc2165af A B C D J1 ALERTB SDA SCL SYNC VDD25 VDD33 INTVCC E12 E11 E10 E9 16V C2 270uF 2 R6 10K VDD33 + VIN OPT OPT OPT OPT OPT R25 R27 R31 R35 R37 5 VDD25 VDD33 INTVCC EXTVCC OPT R22 VDD25 MMBT3906-AL3-R SOT-323 + R7 10K Q10 Q7 MMBT3906-AL3-R SOT-323 ITH1 ITH0 OFF JP1 WP ON RUN1 RUN0 SHARE_CLK E2 EXTVCC VIN- GND J2 4.5V - 14V VIN E1 R38 R36 R32 R28 R26 R23 OPT OPT OPT OPT OPT OPT C17 10nF R11 4.99K FAULT0B RUN0 ITH0 C12 150pF C10 150pF R9 R10 4.99K 10K C14 10nF R8 10K 16V C32 270uF R1 0.005 2512 EXTVCC 4.7uF 14 27 17 18 26 ALERTB SHARE_CLK RUN0 RUN1 WP1 6 29 30 ASEL1 23 22 R39 OPT OPT R45 OPT R42 SYNC E14 VDD33 VDD25 2.2uF 4 LTC3884EUK U1 R33 10K VDD33 R34 10K VDD33 FAULT1B FAULT0B VSENSE1- VSENSE1+ ISENSE1- ISENSE1+ BG1 BOOST1 SW1 TG1 VSENSE0- VSENSE0+ ISENSE0- ISENSE0+ BG0 BOOST0 SW0 TG0 R4 0 VIN OPT C5 R3 0 VIN1 44 TG0 SW1 16 15 31 32 4 3 37 R29 10K VDD33 FAULT1B RUN1 ITH1 PGOOD0 VSENSE0- VSENSE0+ 4 R40 OPT OPT R46 OPT R43 PGOOD1 VSENSE1- VSENSE1+ VOUT0 2010 2010 R48 OPT 2010 R47 OPT 2010 R44 OPT R41 OPT R30 10K R19 0 VSENSE0- VOUT1 PGOOD1 PGOOD0 FAULT1B FAULT0B VSENSE1- VSENSE1+ 3 4 VIN1 4 Q2 OPT 4 Q6 OPT Q4 OPT 4 CIN3 10uF 1210 CIN4 10uF 1210 CIN2 10uF 1210 L1 0.25uH 0.25uH OPT R24 R20 715 1% OPT 744301025 L2 R17 R14 715 1% 744301025 COUT5 100uF 6.3V 1210 VOUT1 SCALE = NONE [j `\ APPROVALS R114 0 R113 0 COUT1 100uF 6.3V 1210 VOUT0 2 - N/A DATE: SIZE 1 COUT8 + 330uF 6.3V 7343 COUT4 + 330uF 6.3V 7343 PROTO VOUT0 VOUT0+ VOUT1 VOUT1+ VOUT0- GND VOUT1- GND DATE 04/22/15 [j APPROVED 1 SHEET 1 LTC3884EUK DEMO CIRCUIT 2165A Tuesday, October 06, 2015 IC NO. 2 OF 3 REV. HIGH EFFICIENCY, DUAL-OUTPUT SYNCHRONOUS BUCK CONVERTER WITH POWER SYSTEM MANAGEMENT 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only E6 J6 1.0V AT 30A J5 E5 E4 J4 1.0V AT 30A J3 E3 REVISION HISTORY DESCRIPTION TECHNOLOGY R21 10 1% COUT7 + 330uF 6.3V 7343 R18 10 1% R16 10 COUT3 + 330uF 6.3V 7343 R5 10 TITLE: SCHEMATIC VSENSE1- COUT6 100uF 6.3V 1210 VSENSE1+ VSENSE0- COUT2 100uF 6.3V 1210 VSENSE0+ REV ECO NOTE: T1 - T8 ARE EXPOSED PCB VIAS 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE Q9 OPT 4 CIN1 10uF 1210 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 PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. Q8 BSC010NE2LSI 4 Q5 BSC050NE2LS INTVCC VIN1 Q3 BSC010NE2LSI 4 4 Q1 BSC050NE2LS 3 CMDSH-3-TR 0.1uF D2 C15 INTVCC CMDSH-3-TR D1 VSENSE0+ 0.1uF C8 VDD33 C16 220nF BG1 TG1 36 35 C9 220nF R15 0 34 2 1 8 7 42 BG0 43 BST0 45 SW0 OPTION FOR TWO-PHASE CONFIGURATION CONNECTION PGOOD1 E13 PHASE_CFG FREQ_CFG VOUT1_CFG VOUT0_CFG ASEL1 ASEL0 TSNS1 TSNS0 ITH1 ITH_R1 ITH0 ITH_R0 WP RUN1 RUN0 SHARE_CLK ALERTB SDA SCL 1uF C1 INTVCC 4.7uF C7 EXTVCC C4 PGOOD0 PHASE_CFG 24 FREQ_CFG VOUT1_CFG 21 20 ASEL0 VOUT0_CFG 9 19 TSNS1 10 1500pF TSNS0 C13 5 13 SDA 1500pF 12 SCL C11 11 40 SYNC R12 R13 4.99K 4.99K C6 0805 C3 1uF R2 1 1% R147 OPT INTVCC 47 VIN1 5 1 2 3 VIN+ 1 3 39 VIN 25 VDD25 46 IIN+ 38 INTVCC PGND 41 GND 49 5 28 VDD33 PGOOD1 33 IINPGOOD0 48 5 5 1 2 3 5 1 2 3 5 1 2 3 1 2 3 5 1 2 3 1 2 3 5 1 2 3 5 A B C D DEMO MANUAL DC2165A SCHEMATIC DIAGRAM 11 dc2165af A B C D R93 R96 20K 154k 1% 3 2 1 R86 OPT 2010 DIV V+ OUT 5 70Hz, 3% Duty Cycle SET GND MOD 4 5 6 1M R94 R97 681K 1% 0 R91 BLEEDER LOADS R85 OPT 2010 U5 LTC6992IS6-1 VOUT0 VOUT1 R103 5K C41 1.0uF R95 20K +5.5V R104 649 1% R99 182 1% 100nF C39 3 2 5 4 +IN V- V+ VIN OFF ON BIAS C30 10uF 16V 1210 2 JP4 10K R87 OPTIONAL 5.5V BIAS 3 2 1 ADJ OUT 4 5 LT1761ES5-SD SHDN GND IN U4 3 R105 10K R107 34.8K 1% +5.5V -IN VOUT 4 1 3.3 1% 82.5 1% R100 C40 150pF R92 1 INT 3 R98 10K EXT JP5 PULSE R89 2 R102 OPT 2512 C42 1.0uF 1 SUD50N04-8M8P-4GE3 Q24 C34 100uF 6.3V 1210 CUSTOMER NOTICE R101 0.01 2512 Q23 SUD50N04-8M8P-4GE3 E8 2 J12 GND 3 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. OPT 2 2 SCALE = NONE [j `\ APPROVALS 2010 R90 0 2010 R88 EXTVCC IOUT STEP OPT R106 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. EXT PULSE E7 C35 100uF 6.3V 1210 C31 10uF 16V 1210 DYNAMIC LOAD TEST CIRCUIT, FOR DEMO BOARD ONLY U6 LT1803IS5 4 1 3 12 2 5 DATE: N/A SIZE COUT25 100uF 6.3V 1210 COUT20 100uF 6.3V 1210 TECHNOLOGY COUT24 100uF 6.3V 1210 COUT19 100uF 6.3V 1210 2 J11 2 VOUT1 VOUT1 VOUT0 VOUT0 J10 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only COUT26 1.0uF 1 COUT21 1.0uF 1 1 SHEET 2 LTC3884EUK DEMO CIRCUIT 2165A Friday, September 04, 2015 IC NO. 2 OF 3 REV. HIGH EFFICIENCY, DUAL-OUTPUT SYNCHRONOUS BUCK CONVERTER WITH POWER SYSTEM MANAGEMENT TITLE: SCHEMATIC COUT22 COUT23 + 330uF + 330uF 6.3V 6.3V 7343 7343 COUT17 COUT18 + 330uF + 330uF 6.3V 6.3V 7343 7343 1 A B C D DEMO MANUAL DC2165A SCHEMATIC DIAGRAM dc2165af 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 D VIN 3 R77 3V3 SDA SCL WP VCC U3 5 R78 15.8k Q19 DMP3130L-7 10K 2 2 100nF C26 3V3 EESCL EESDA 6 5 VDD33 EEWP 7 8 AUXVCC 1 2 3 4 5 6 7 8 9 10 11 12 24LC025-I/ST VSS A2 A1 A0 E21 GND 4 3 2 1 D12 4 AUX3V4 3 2 1 TO DC1613A AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA J7 TO DC2086A AUX3V4 SCL GND SDA J16 1 1 FAULT0B E20 AUXP 1 R72 4.99K D5 3V3 2N7002A Q21 GREEN FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V SDA 4 D6 1 SYNC 1 SHARE_CLK ALERTB E24 SCL 2N7002A Q22 GREEN GPIO1 R80 200 OPT R75 3V3 OPT R74 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SCL J8 E23 SDA DEMO HEADER (F) E22 ALERTB FAULT1B ALERTB GPIO0 R79 200 R73 4.99K 3 3V3 D7 TP0101K Q20 R81 127 3 PGOOD0 R139 OPT 1206 R66 0 1 D9 R142 OPT 3V3 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V OPT PGOOD1 J9 CUSTOMER NOTICE 2N7002A Q26 GREEN PGOOD0 R130 200 R126 OPT DEMO HEADER (M) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R68 R65 0 R63 0 R61 OPT 1 OFF 5 D8 ON SW1 RUN1 D11 OPT 3V3 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. C27 10nF R69 10 D10 OPT 2 SCALE = NONE [j `\ APPROVALS 2N7002A Q25 GREEN PGOOD1 R125 200 2 R64 OPT 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 PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. R67 OPT E26 E25 R146 OPT ALERTB RED VIN 3V3 SYNC SHARE_CLK ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN 3 2 2 3 VDD33 3 2 4 3 2 4 1 6 3 3 2 OFF 5 ON SW2 RUN0 2 DATE: N/A SIZE FAULT0B RUN0 E31 E30 SGND RUN1 RUN1 RUN0 E29 TECHNOLOGY C28 10nF R70 10 FAULT1B FAULT1B FAULT0B E28 E27 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only 1 1 SHEET 3 LTC3884EUK DEMO CIRCUIT 2165A Tuesday, October 06, 2015 IC NO. 2 OF 3 REV. HIGH EFFICIENCY, DUAL-OUTPUT SYNCHRONOUS BUCK CONVERTER WITH POWER SYSTEM MANAGEMENT TITLE: SCHEMATIC R62 OPT 4 1 6 3 5 A B C D DEMO MANUAL DC2165A SCHEMATIC DIAGRAM dc2165af 13 DEMO MANUAL DC2165A 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 14 Linear Technology Corporation dc2165af LT 1215 • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2015