DEMO MANUAL DC1740A LTC3880EUJ PolyPhase Step-Down DC/DC Converter with Digital Power System Management DESCRIPTION Demonstration circuit 1740A is a PolyPhase® synchronous buck converter featuring the LTC®3880EUJ, a dual-phase current mode controller with PMBus interface and digital power system management functions. There are two versions of the boards available: 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. • DC1740A-A: 4-phase single-output configuration. Default output setting VOUT0 = 1.2V/80A GUI Download • DC1740A-B: 3+1-phase dual-output configuration. Default output setting VOUT0 = 1.5V/20A, VOUT1 = 1.2V/60A http://www.linear.com/ltpowerplay The DC1740A powers up to default settings and produces power based on configuration resistors or with non-volatile memory (NVM) settings without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter aspects of the LTC3880. To fully explore the extensive digital power management features of the parts, download the GUI software PERFORMANCE SUMMARY SYMBOL PARAMETER VIN Input Supply Range VOUT0 Output Voltage Range (1740A-A version) IOUT0 Output Current Range (1740A-A version) VOUT0 Output Voltage Range (1740A-B version) IOUT0 Output Current Range (1740A-B version) VOUT1 Output Voltage Range (1740A-B version) IOUT1 Output Current Range (1740A-B version) FSW Factory Default Switching EFF Peak Efficiency (-A version) The software can be downloaded from: For more digital power system management information and instructions of LTpowerPlay, please visit: http://www.linear.com/dpsm Design files for this circuit board are available at http://www.linear.com/demo L, LT, LTC, LTM, Linear Technology, the Linear logo and PolyPhase 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 IOUT0 = 0A TO 80A, VIN = 7V to 14V MIN TYP MAX 7 12 14 0.5 1.2 4.096 V 80 A 1.5 4.096 V 20 A 1.2 4.096 V 60 A 0 IOUT0 = 0A TO 20A, VIN = 7V to 14V 0.5 IOUT1 = 0A TO 60A, VIN = 7V to 14V 0.5 0 0 VOUT0 = 1.2V, See Figure 4 UNITS V 425 kHz 88.6 % dc1740afa 1 DEMO MANUAL DC1740A QUICK START PROCEDURE Demonstration circuit 1740A makes it easy to set up to evaluate the performances of the LTC3880. 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 C11 or C44. See Figure 3 for proper scope probe technique. 1.Make sure jumpers are in the following positions: DC1740A-A Version JUMPER POSITION FUNCTION JP2 C JP3 ON 3.3V for LED indicator JP4 OFF External VCC for LTC3880-1 JP5 C Tie RUN0 to RUN1 Tie GPIO0B to GPIO1B DC1740A-B Version JUMPER POSITION FUNCTION JP2 NC Tie RUN0 to RUN1 JP3 ON 3.3V for LED indicator JP4 OFF External Vcc for LTC3880-1 JP5 NC Tie GPIO0B to GPIO1B 2.With power off, connect the input power supply to VIN and GND. Connect active load to the output. 3.Make sure both RUN switches are OFF. 4.Turn on the power at the input. Note: Make sure that the input voltage does not exceed 15V. 5.Turn on RUN switches as desired. 6.Check for the correct output voltage from TP15 to TP16 and from TP24 to TP26. 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 section for details. Connecting a PC to DC1740A You can use a PC to reconfigure the power management features of the LTC3880 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. dc1740afa 2 DEMO MANUAL DC1740A QUICK START PROCEDURE Figure 1. Demo Setup with PC IOUT0 V IOUT1 V SHUNT VOUT0 Load V VOUT1 Load V A V POWER SUPPLY SHUNT Figure 2. Power Test Setup (Dual-Output example) dc1740afa 3 DEMO MANUAL DC1740A QUICK START PROCEDURE Combining DC1740A with Other Digital Power Demo Boards The DC1740A may be plugged together in a multi-board array with other LTC power system management boards using J7 and J8. Measuring Output Ripple Voltage An accurate ripple measurement may be performed by using the Figure 3 configuration across C11 or C44. Measuring Efficiency (See Figure 4) To accurately measure efficiency of any configuration, do the following: • Remove R103, R111 (bleeder resistors on bottom side of board) • Set JP3 to OFF to disable the regulator that provides power to various auxiliary demo board components like LEDs. Evaluating the LTC3880-1 For applications that require the highest possible efficiency, the LTC3880-1 allows the user to supply the bias voltage and gate driver current from an external power supply. Connect the external power supply, 4.8V to 5.2V, to the EXTVCC pin. To use the onboard LDO to drive INTVCC, make the following modifications to the demo board: 100 VIN = 12V FSW = 425kHz 95 VOUT = 1.5V 90 EFFICIENCY (%) • Measure VIN across the input ceramic capacitor (C5, C37). Measure VOUT across the output ceramic capacitor (C11, C44). Figure 3. Measuring Output Voltage Ripple VOUT = 1.2V 85 80 75 70 65 60 0 10 20 30 40 50 60 LOAD CURRENT (A) 70 80 3866 G12 Figure 4. Typical Efficiency Curves DC1740A-A • Set JP4 to ON so that U5 provides the 5V drive to INTVCC. U5 takes the place of the external power supply. • Install R1,R46. To accurately measure efficiency of a demo board containing the LTC3880-1, • Drive INTVCC from an external source through the pin named: EXTVCC. IOUT 20A/DIV VOUT 50mV/DIV • Set JP3 and JP4 to OFF to disable the LDOs. • Measure VIN across the input ceramic capacitor (C5, C37). Measure VOUT across the output ceramic capacitor (C11, C44). VIN = 12V VOUT = 1.2V IOUT = 0A TO 40A FSW = 425kHz Figure 5. Load Transient Waveform DC1740A-A dc1740afa 4 DEMO MANUAL DC1740A LTpowerPlay SOFTWARE GUI LTpowerPlay is a powerful Windows-based development environment that supports Linear Technology power system management ICs, including the LTC3880, LTC3883, 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 multi-chip 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 LTC3880’s DC1740A 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://linear.com/ltpowerplay To access technical support documents for LTC Digital Power Products visit Help. View online help on the LTpowerPlay menu. Figure 6. LTpowerPlay Main Interface dc1740afa 5 DEMO MANUAL DC1740A LTpowerPlay QUICK START PROCEDURE The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTC3880 (taking DC1740A-A as an example). 1. Download and install the LTPowerPlay GUI: http://linear.com/ltpowerplay 2. Launch the LTpowerPlay GUI. a. The GUI should automatically identify the DC1740A-A. 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 LTC3880s are communicating: Then, click the “W” (PC to RAM) icon to write these register values to the LTC3880. After finishing this step, you will see the output voltage will change to 1.5V. 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 LTC3880. This reads the configuration from the RAM of LTC3880 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: 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. Name it whatever you want. dc1740afa 6 DEMO MANUAL DC1740A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURE/PART NUMBER Required Circuit Components—DC1740A-A 1 2 C1, C36 CAP., X5R, 4.7µF,16V, 10%, 0805 MURATA GRM219R61C475KE15D 2 1 C76 CAP., X5R, 4.7µF,16V, 10%, 0603 TDK C1608X5R1C475K 3 6 C2, C40, C20, C34, C53, C67 CAP., X5R, 0.22µF,16V, 10%, 0603 AVX 0603YD224KAT2A 4 2 C72, C78 CAP., X5R, 0.22µF,16V, 10%, 0805 AVX 0805YC224KAT2A 5 2 C3, C69 CAP., OS-CON, 150µF, 16V, 20%, F12 SANYO, 16SVP150M 6 3 C5, C22, C37 CAP., X5R, 10µF,16V, 10%, 1210 TAIYO YUDEN EMK325BJ106KN 7 1 C58 CAP., X5R, 10µF,16V, 10%, 1210 TAIYO YUDEN EMK325BJ106KN 8 1 C75 CAP., X5R, 10µF,16V, 10%, 1206 TAIYO YUDEN EMK316BJ106KD 9 5 C6, C26, C39, C59, C79 CAP., X5R, 100nF,25V, 10%, 0603 AVX 06033C104KAT2A 10 4 C7, C8, C41, C42 CAP., X5R, 1µF, 25V, 10%, 0603 AVX 06033D105KAT2A 11 2 C73, C77 CAP., X5R, 1µF, 16V, 10%, 1206 AVX 1206YD105KAT2A 12 16 C9, C10, C14, C15, C27, C28, C29, C30, C46, C47, C48, C49, C60, C61, C62, C63 CAP., POSCAP 330µF 4V D3L SANYO, 4TPF330M9L 13 12 C11, C12, C13, C31, C32, C33, C43, C44, C45, CAP., X5R, 100µF, 6.3V, 10%,1210 C64, C65, C66 AVX 12106D107AT2A 14 1 C50 CAP., X7R, 4.7nF, 50V, 10%, 0603 NIC NMC0603X7R472K50TRPF 15 4 C18, C19, C51, C52 CAP., X7R, 100pF, 25V, 10%, 0603 AVX 06033C101JAT2A 16 4 C21, C35, C54 ,C68 CAP., X5R, 1µF, 25V, 10%, 0603 AVX 06033D105KAT2A 17 6 C23, C25, C56, C57, C70, C71 CAP., X5R, 10nF,16V, 10%, 0603 AVX 0603YC103KAT2A 18 4 D1, D2, D3, D4 DIODE, SCHOTTKY, SOD-323 CENTRAL CMDSH-3TR 19 4 L1, L2, L3, L4 INDUCTOR, SMT POWER IND. 0.4µH COILCRAFT, XAL1060-401 20 4 Q1-Q4 DUAL N-CHANNEL MOSFET 25V LFPAK FAIRCHILD FDMS3620S 21 1 U1 IC, LTC3880EUJ, QFN 6mm x 6mm LTC., LTC3880EUJ#PBF 22 1 U2 IC, LTC3880EUJ, QFN 6mm x 6mm LTC., LTC3880EUJ#PBF Additional Circuit Components—DC1740A-A 1 2 D5, D6 LED GREEN S-GW TYPE SMD PANASONIC LN1371SGTRP 2 1 D7 LED RED S-TYPE GULL WING SMD PANASONIC LN1271RTR 3 0 Q7, Q9, Q10, Q11, Q12, Q13, Q14, Q16 (OPT) MOSFET SPEED SRS 30V 30A LFPAK 4 4 Q5, Q8, Q15, Q18 TRANS GP SS PNP 40V SOT-23 ON SEMI, MMBT3906LT1G 5 1 Q21 N-CHANNEL 30-V MOSFET,TO-252 VISHAY, SUD50N03-10P-E3 6 3 Q22, Q25, Q26 MOSFET P-CH 20V 0.58A SOT-23 VISHAY TP0101K-T1-E3 7 2 Q23, Q24 MOSFET N-CH 60V 115MA SOT-23 FAIRCHILD 2N7002A 8 0 R1, R46, R126, R128 (OPT) RES., 0805 9 0 R11, R14, R24, R26, R28, R36, R37, R53,R54, R63, R65, R71, R73, R94, R117, R118, R124, R127, R129 (OPT) RES., 0603 10 29 R2, R3, R10, R16, R20, R22, R25, R27, R30, RES., CHIP, 0Ω, 0603 R45, R47, R48, R50, R52, R55, R8, R59, R61, R64, R66, R67, R68, R75, R89, R90, R95, R129, R77, R79 NIC NRC06ZOTRF 11 5 R109, R115, R116, R119 RES., CHIP, 0Ω, 0805 NIC NRC10ZOTRF 12 1 R41 RES., CHIP, 15k, 1%, 0603 NIC NRC06F1502TRF 13 4 R4, R21, R49, R60 RES., CHIP, 0Ω, 2010 TEPRO(NAKOMA) RN6083 dc1740afa 7 DEMO MANUAL DC1740A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURE/PART NUMBER 14 16 R5, R6, R7, R8, R29, R38, R39, R81, R82, R87, R88, R91, R96, R102, R110, R112 RES., CHIP, 10k, 1%, 0603 NIC NRC06f1002TRF 15 8 R13, R18, R23, R31, R51, R57, R62, R69 RES., CHIP, 1k, 1%, 0603 NIC NRC06F1001TRF 16 2 R56 RES., CHIP, 4.87k, 1%, 0603 NIC NRC06F4871TRF 17 3 R33, R32, R70 RES., CHIP, 20k, 1%, 0603 NIC NRC06F2002TRF 18 3 R34, R35, R72 RES., CHIP, 24.9k, 1%, 0603 NIC NRC06F2492TRF 19 1 R40 RES., CHIP, 11k, 1%, 0603 NIC NRC06F127TRF 20 2 R43, R78 RES., CHIP, 5.76k, 1%, 0603 NIC NRC06F5761TRF 21 3 R120, R121, R122 RES., CHIP, 4.99K, 1%, 0603 NIC NRC06F4991TRF 22 1 R76 RES., CHIP, 12.7k, 1%, 0603 VISHAY CRCW060311K0FKEA 23 2 R100, R101 RES., CHIP, 200Ω, 1%, 0603 NIC NRC06F2000TRF 24 2 R103, R111 RES., CHIP, 0.02Ω, 1%, 2010 VISHAY, WSL2010R020FEA 25 1 R104 RES., CHIP, 127Ω, 1%, 0603 NIC NRC06F1270TRF 26 2 R105,R107 RES., CHIP, 100k, 1%, 0603 NIC NC06F1003TRF 27 1 R106 RES., CHIP, 49.9Ω, 1%, 0603 NIC NRC06F49R9TRF 28 2 R113, R114 RES., CHIP, 10Ω, 1%, 0603 NIC NRC06F10r0TRF 29 3 R9, R85, R86 RES., CHIP, 0Ω, 0603 PANASONIC ERJ-3GEY0R00V 30 0 R12, R19 OPT 31 4 R84, R74, R80, R83 RES., CHIP, 0Ω, 2010 TEPRO(NAKOMA) RN6083 32 0 R15 OPT RES., 0603 33 1 R17 RES., CHIP, 4.87k, 1%, 0603 NIC NRC06F4871TRF 34 1 C16 CAP., X5R, 4.7nF,25V, 10%, 0603 NIC NMC0603X7R472K50TRPF 35 0 C17, OPT 36 0 C74, C80-C86 OPT CAP., 1210 37 0 Q12, Q13, Q14, Q16 OPT MOSFET SPEED SRS LFPAK 38 1 R42 RES., CHIP, 5.76K, 1%, 0603 NIC NRC06F5761TRF 39 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1740A 40 1 RES., CHIP, 0Ω, 0603 PANASONIC ERJ-3GEY0R00V R44 Hardware—DC1740A-A 1 4 JP2-JP5 0.1" SINGLE ROW HEADER, 3 PIN SAMTEC, TSW-103-07-L-S 2 2 JP2-JP5 SHUNT, 0.1" BLK SAMTEC SNT-100-BK-G 3 4 J1, J2, J9, J11 JACK, BANANA KEYSTONE 575-4 4 2 J3, J4 STUD, TESTPIN PEM KFH-032-10 5 4 J3, J4 (X2) NUT, BRASS 10-32 ANY #10-32 6 2 J3, J4 RING, LUG #10 KEYSTONE #10 7 2 J3, J4 WASHER, TIN PLATED BRASS ANY #10 8 2 J5, J6 CONN, BNC, 5PINS CONNEX, 112404 9 1 J7 CONN SOCKET 20 DUAL ROW RA (F) MILL MAX 803-43-020-20-001 10 1 J8 PIN HEADER 20 DUAL ROW RA (M) MILL MAX 802-43-020-20-001 11 1 J10 CONN HEADER 12POS 2MM STR DL PCB FCI 98414-G06-12ULF 12 1 U4 IC, LDO REG W/SHTDWN 3.3V 8-SOIC LINEAR TECH., LT1129CS8-3.3 13 1 U5 IC, LT1129CS8-5, S8 PACKAGE LINEAR TECH, LT1129CS8-5 dc1740afa 8 DEMO MANUAL DC1740A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURE/PART NUMBER 14 1 U6 IC, SERIAL EEPROM MICROCHIP 24LC025-I/ST 15 2 SW3,SW4 CONNECTOR, SUB MINIATURE SLIDE SWITCHES C&K.,JS202011CQN 16 28 TP2-TP16, TP19-TP28, TP30, TP40, TP42 TESTPOINT, TURRET, 0.062" MILL-MAX, 2308-2-00-80-00-00-07-0 17 4 STAND-OFF STAND-OFF, NYLON 0.50" tall KEYSTONE, 8833(SNAP ON) Required Circuit Components—DC1740A-B 1 2 C1, C36 CAP., X5R, 4.7µF,16V, 10%, 0805 MURATA GRM219R61C475KE15D 2 1 C76 CAP., X5R, 4.7µF,16V, 10%, 0603 TDK C1608X5R1C475K 3 6 C2, C40, C20, C34, C53, C67 CAP., X5R, 0.22µF,16V, 10%, 0603 AVX 0603YD224KAT2A 4 2 C72, C78 CAP., X5R, 0.22µF,16V, 10%, 0805 AVX 0805YC224KAT2A 5 2 C3, C69 CAP., OS-CON, 150µF, 16V, 20%, F12 SANYO, 16SVP150M 6 3 C5, C22, C37 CAP., X5R, 10µF,16V, 10%, 1210 TAIYO YUDEN EMK325BJ106KN 7 1 C58 CAP., X5R, 10µF,16V, 10%, 1210 TAIYO YUDEN EMK325BJ106KN 8 1 C75 CAP., X5R, 10µF,16V, 10%, 1206 TAIYO YUDEN EMK316BJ106KD 9 5 C6, C26, C39, C59, C79 CAP., X5R, 100nF,25V, 10%, 0603 AVX 06033C104KAT2A 10 4 C7, C8, C41, C42 CAP., X5R, 1µF, 25V, 10%, 0603 AVX 06033D105KAT2A 11 2 C73, C77 CAP., X5R, 1µF, 16V, 10%, 1206 AVX 1206YD105KAT2A 12 16 C9, C10, C14, C15, C27, C28, C29, C30, C46, C47, C48, C49, C60, C61, C62, C63 CAP., POSCAP 330µF 4V D3L SANYO, 4TPF330M9L 13 12 C11, C12, C13, C31, C32, C33, C43, C44, C45, C64, C65, C66 CAP., X5R, 100µF, 6.3V, 10%,1210 AVX 12106D107AT2A 14 1 C50 CAP., X7R, 4.7nF, 50V, 10%, 0603 NIC NMC0603X7R472K50TRPF 15 4 C18, C19, C51, C52 CAP., X7R, 100pF, 25V, 10%, 0603 AVX 06033C101JAT2A 16 4 C21, C35, C54, C68 CAP., X5R, 1µF, 25V, 10%, 0603 AVX 06033D105KAT2A 17 6 C23, C25, C56, C57, C70, C71 CAP., X5R, 10nF,16V, 10%, 0603 AVX 0603YC103KAT2A 18 4 D1, D2, D3, D4 DIODE, SCHOTTKY, SOD-323 CENTRAL CMDSH-3TR 19 4 L1, L2, L3, L4 INDUCTOR, SMT POWER IND. 0.4uH COILCRAFT, XAL1060-401 20 4 Q1-Q4 DUAL N-CHANNEL MOSFET 25V LFPAK FAIRCHILD FDMS3620S 21 1 U1 IC, LTC3880EUJ, QFN 6mm x 6mm LTC., LTC3880EUJ#PBF 22 1 U2 IC, LTC3880EUJ, QFN 6mm x 6mm LTC., LTC3880EUJ#PBF Additional Circuit Components—DC1740A-B 1 2 D5, D6 LED GREEN S-GW TYPE SMD PANASONIC LN1371SGTRP 2 1 D7 LED RED S-TYPE GULL WING SMD PANASONIC LN1271RTR 3 0 Q7, Q9, Q10, Q11, Q12, Q13, Q14, Q16 (OPT) MOSFET SPEED SRS 30V 30A LFPAK 4 4 Q5, Q8, Q15, Q18 TRANS GP SS PNP 40V SOT-23 ON SEMI, MMBT3906LT1G 5 1 Q21 N-CHANNEL 30-V MOSFET,TO-252 VISHAY, SUD50N03-10P-E3 6 3 Q22, Q25, Q26 MOSFET P-CH 20V 0.58A SOT-23 VISHAY TP0101K-T1-E3 7 2 Q23, Q24 MOSFET N-CH 60V 115MA SOT-23 FAIRCHILD 2N7002A 8 0 R1, R46, R126, R128 (OPT) RES., 0805 9 0 R11, R14, R24, R26, R28, R36, R37, R53, R54, R63, R65, R71, R73, R94, R117, R118, R124, R127, R129(OPT) RES., 0603 dc1740afa 9 DEMO MANUAL DC1740A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURE/PART NUMBER 10 29 R2, R3, R10, R16, R20, R22, R25, R27, R30, R45, R47, R48, R50, R52, R55, R58, R59, R61, R64, R66, R67, R68, R75, R89, R90, R95, R129, R77, R79 RES., CHIP, 0Ω, 0603 NIC NRC06ZOTRF 11 5 R109, R115, R116, R119 RES., CHIP, 0Ω, 0805 NIC NRC10ZOTRF 12 1 R41 RES., CHIP, 15k, 1%, 0603 NIC NRC06F1502TRF 13 4 R4, R21, R49, R60 RES., CHIP, 0Ω, 2010 TEPRO(NAKOMA) RN6083 14 16 R5, R6, R7, R8, R29, R38, R39, R81, R82, R87, R88, R91, R96, R102, R110, R112 RES., CHIP, 10k, 1%, 0603 NIC NRC06f1002TRF 15 8 R13, R18, R23, R31, R51, R57, R62, R69 RES., CHIP, 1k, 1%, 0603 NIC NRC06F1001TRF 16 2 R56 RES., CHIP, 4.87k, 1%, 0603 NIC NRC06F4871TRF 17 3 R33, R32, R70 RES., CHIP, 20k, 1%, 0603 NIC NRC06F2002TRF 18 3 R34, R35, R72 RES., CHIP, 24.9k, 1%, 0603 NIC NRC06F2492TRF 19 1 R40 RES., CHIP, 11k, 1%, 0603 NIC NRC06F127TRF 20 2 R43, R78 RES., CHIP, 5.76k, 1%, 0603 NIC NRC06F5761TRF 21 3 R120, R121, R122 RES., CHIP, 4.99k, 1%, 0603 NIC NRC06F4991TRF 22 1 R76 RES., CHIP, 12.7k, 1%, 0603 Vishay CRCW060311K0FKEA 23 2 R100, R101 RES., CHIP, 200Ω, 1%, 0603 NIC NRC06F2000TRF 24 2 R103, R111 RES., CHIP, 0.02Ω, 1%, 2010 VISHAY, WSL2010R020FEA 25 1 R104 RES., CHIP, 127Ω, 1%, 0603 NIC NRC06F1270TRF 26 2 R105, R107 RES., CHIP, 100k, 1%, 0603 NIC NC06F1003TRF 27 1 R106 RES., CHIP, 49.9Ω, 1%, 0603 NIC NRC06F49R9TRF 28 2 R113, R114 RES., CHIP, 10Ω, 1%, 0603 NIC NRC06F10r0TRF 29 0 R9, R85, R86 OPT RES., 0603 30 2 R12, R19 RES., CHIP, 0Ω, 0603 PANASONIC ERJ-3GEY0R00V 31 0 R84, R74, R80, R83 OPT RES., CHIP, 2010 TEPRO(NAKOMA) RN6083 32 0 R15, OPT 33 1 R17 RES., CHIP, 10k, 1%, 0603 NIC NRC06F4871TRF 34 1 C16 CAP., X5R, 10nF, 25V, 10%, 0603 MURATA GRM18BR71E103KA37D 35 0 C17, OPT 36 0 C74, C80-C86 OPT CAP., 1210 37 0 Q12, Q13, Q14, Q16 OPT MOSFET SPEED SRS LFPAK 38 1 R42 RES., CHIP, 7.32k, 1%, 0603 VISHAY.,CRCW060311K3FKEA 39 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1740A 40 0 R44, OPT dc1740afa 10 DEMO MANUAL DC1740A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURE/PART NUMBER Hardware—DC1740A-B 1 4 JP2-JP5 0.1" SINGLE ROW HEADER, 3 PIN SAMTEC, TSW-103-07-L-S 2 2 JP2-JP5 SHUNT, 0.1" BLK SAMTEC SNT-100-BK-G 3 4 J1, J2, J9, J11 JACK, BANANA KEYSTONE 575-4 4 2 J3, J4 STUD, TESTPIN PEM KFH-032-10 5 4 J3, J4 (X2) NUT, BRASS 10-32 ANY #10-32 6 2 J3, J4 RING, LUG #10 KEYSTONE #10 7 2 J3, J4 WASHER, TIN PLATED BRASS ANY #10 8 2 J5, J6 CONN, BNC, 5PINS CONNEX, 112404 9 1 J7 CONN SOCKET 20 DUAL ROW RA (F) MILL MAX 803-43-020-20-001 10 1 J8 PIN HEADER 20 DUAL ROW RA (M) MILL MAX 802-43-020-20-001 11 1 J10 CONN HEADER 12POS 2MM STR DL PCB FCI 98414-G06-12ULF 12 1 U4 IC, LDO REG W/SHTDWN 3.3V 8-SOIC LINEAR TECH., LT1129CS8-3.3 13 1 U5 IC, LT1129CS8-5, S8 PACKAGE LINEAR TECH, LT1129CS8-5 14 1 U6 IC, SERIAL EEPROM MICROCHIP 24LC025-I/ST 15 2 SW3, SW4 CONNECTOR, SUB MINIATURE SLIDE SWITCHES C&K.,JS202011CQN 16 28 TP2-TP16, TP19-TP28, TP30,TP40, TP42 TESTPOINT, TURRET, 0.062" MILL-MAX, 2308-2-00-80-00-00-07-0 17 4 STAND-OFF STAND-OFF, NYLON 0.50" tall KEYSTONE, 8833(SNAP ON) dc1740afa 11 DEMO MANUAL DC1740A SCHEMATIC DIAGRAM dc1740afa 12 DEMO MANUAL DC1740A SCHEMATIC DIAGRAM dc1740afa 13 DEMO MANUAL DC1740A SCHEMATIC DIAGRAM dc1740afa 14 DEMO MANUAL DC1740A SCHEMATIC DIAGRAM dc1740afa 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. 15 DEMO MANUAL DC1740A 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 dc1740afa 16 Linear Technology Corporation LT 1113 REV A • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2013