ltc3880euj polyphase step-down dc/dc converter with

1Rev. B

DEMO MANUAL DC1740A

DESCRIPTION

LTC3880EUJPolyPhase Step-Down DC/DC Converter with Digital Power System Management

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 ver-sions of the boards available:

• DC1740A-A: 4-phase single-output configuration. Default output setting VOUT0 = 1.2V/80A

• DC1740A-B: 3+1-phase dual-output configuration. De-fault output setting VOUT0 = 1.5V/20A, VOUT1 = 1.2V/60A

The DC1740A powers up to default settings and pro-duces power based on configuration resistors or with non-volatile memory (NVM) settings without the need for any serial bus communication. This allows easy evalua-tion of the DC/DC converter aspects of the LTC3880. To fully explore the extensive digital power manage-ment features of the parts, download the GUI software All registered trademarks and trademarks are the property of their respective owners.

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 Download

The software can be downloaded from:

http://www.analog.com/en/design-center/ltpower-play

For more digital power system management information and instructions of LTpowerPlay, please visit:

http://www.analog.com/en/products/landing-pages/001/power-systems-management

Design files for this circuit board are available.

PERFORMANCE SUMMARY Specifications are at TA = 25°C

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

VIN Input Supply Range 7 12 14 V

VOUT0 Output Voltage Range (1740A-A version) IOUT0 = 0A TO 80A, VIN = 7V to 14V 0.5 1.2 4.096 V

IOUT0 Output Current Range (1740A-A version) 0 80 A

VOUT0 Output Voltage Range (1740A-B version) IOUT0 = 0A TO 20A, VIN = 7V to 14V 0.5 1.5 4.096 V

IOUT0 Output Current Range (1740A-B version) 0 20 A

VOUT1 Output Voltage Range (1740A-B version) IOUT1 = 0A TO 60A, VIN = 7V to 14V 0.5 1.2 4.096 V

IOUT1 Output Current Range (1740A-B version) 0 60 A

FSW Factory Default Switching 425 kHz

EFF Peak Efficiency (-A version) VOUT0 = 1.2V, See Figure 4 88.6 %

http://www.analog.com/LTC3880?doc=DC1740A.pdf

http://www.analog.com/en/design-center/ltpower-play.html

http://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/DC1740A.html#eb-documentation?doc=DC1740A.pdf

2Rev. B

DEMO MANUAL DC1740A

QUICK START PROCEDUREDemonstration 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 Tie RUN0 to RUN1

JP3 ON 3.3V for LED indicator

JP4 OFF External VCC for LTC3880-1

JP5 C 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, sequenc-ing 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.

3Rev. B

DEMO MANUAL DC1740A

QUICK START PROCEDURE

Figure 1. Demo Setup with PC

Figure 2. Power Test Setup (Dual-Output example)

A

POWER SUPPLY

V

VOUT0 Load

SHUNT V

V

IOUT0

VOUT1 Load V

SHUNT IOUT1

V

4Rev. B

DEMO MANUAL DC1740A

QUICK START PROCEDURECombining 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 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.

• Measure VIN across the input ceramic capacitor (C5, C37). Measure VOUT across the output ceramic capacitor (C11, C44).

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 fol-lowing modifications to the demo board:

• 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 contain-ing the LTC3880-1,

• Drive INTVCC from an external source through the pin named: EXTVCC.

• 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).

Measuring Output Ripple Voltage

An accurate ripple measurement may be performed by using the Figure 3 configuration across C11 or C44.

Figure 3. Measuring Output Voltage Ripple

Figure 4. Typical Efficiency Curves DC1740A-A

Figure 5. Load Transient Waveform DC1740A-A

LOAD CURRENT (A)0

EFFI

CIEN

CY (%

)

80

90

80

3866 G12

70

6020 40 6010 30 50 70

100

75

85

65

95VOUT = 1.5V

VOUT = 1.2V

VIN = 12VFSW = 425kHz

VIN = 12VVOUT = 1.2V

IOUT = 0A TO 40AFSW = 425kHz

IOUT20A/DIV

VOUT50mV/DIV

5Rev. B

DEMO MANUAL DC1740A

LTpowerPlay is a powerful Windows-based development environment that supports Linear Technology power sys-tem 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

LTpowerPlay SOFTWARE GUIissues 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 soft-ware 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:


To access technical support documents for LTC Digital Power Products visit Help. View online help on the LTpowerPlay menu.

Figure 6. LTpowerPlay Main Interface


6Rev. B

DEMO MANUAL DC1740A

LTpowerPlay QUICK START PROCEDUREThe 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:


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:

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:

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:

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.


7Rev. B

DEMO MANUAL DC1740A

PARTS LISTITEM 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, 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. 0.4µH COILCRAFT, XAL1060-401

20 4 Q1-Q4 DUAL N-CHANNEL MOSFET 25V LFPAK FAIRCHILD FDMS3620S

21 1 U1 IC, LTC3880EUJ, QFN 6mm x 6mm ANALOG DEVICES, 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, R45, R47, R48, R50, R52, R55, R8, 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

8Rev. B

DEMO MANUAL DC1740A


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


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


32 0 R15 OPT RES., 0603


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 R44 RES., CHIP, 0Ω, 0603 PANASONIC ERJ-3GEY0R00V

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 ANALOG DEVICES, LT1129CS8-3.3

13 1 U5 IC, LT1129CS8-5, S8 PACKAGE ANALOG DEVICES, LT1129CS8-5

9Rev. B

DEMO MANUAL DC1740A


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


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


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



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

10Rev. B

DEMO MANUAL DC1740A


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



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


17 3 R33, R32, R70 RES., CHIP, 20k, 1%, 0603 NIC NRC06F2002TRF



20 2 R43, R78 RES., CHIP, 5.76k, 1%, 0603 NIC NRC06F5761TRF


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


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

11Rev. B

DEMO MANUAL DC1740A


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 ANALOG DEVICES, LT1129CS8-3.3

13 1 U5 IC, LT1129CS8-5, S8 PACKAGE ANALOG DEVICES, 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)

12Rev. B

DEMO MANUAL DC1740A

SCHEMATIC DIAGRAM5 5

4 4

3 3

2 2

1 1

DD

CC

BB

AA

SGND

AND

PGN

D CO

NNEC

TED

ATA

SING

LE N

ODE

NEAR

U1

7V -

14V

35V

**

2. IN

STAL

L SH

UNTS

AS

SHOW

N.

1. A

LL R

ESIS

TORS

ARE

IN O

HMS,

060

3.

ALL

CAP

ACIT

ORS

ARE

IN M

ICRO

FARA

DS, 0

603.

NOTE

: UNL

ESS

OTHE

RWIS

E SP

ECIF

IED

2512

2512

PLAC

E Q5

,Q6

NEAR

L2,L

1. RE

SPEC

TIVE

LY

D3L

D3L

D3L

D3L

D3L

D3L

D3L

D3L

ADDR

ESS:

0x4

8

*

OPT

*

*

*

* * **

**

OPTI

ONAL

FOR

DISC

RETE

MOS

FET

JP5

Vout

0 / Io

ut0

ASSY

-A -B1.2

V / 1

00A

1.5V

/ 25A

Fsw

425k

HzR9

,R85

,R86

0 OPT

R12,R

19OP

T 0

Vout

1 / Io

ut1

1.5V

/ 75A

425k

Hz

4.7nF

4.7nF

4.7nF

R17

JP2

OPT 0

0 OPT

R84,R

74,R

80,R

834.7

nFC1

74.8

7KR1

5C1

6"C

""N

C"4.8

7K"N

C""C

"

*

*

VDD25-1

INTV

CC-1

VIN

VDD3

3-1

VDD3

3-1

VDD3

3-1

VDD3

3-1

VOUT

1

VOUT

0

VIN

VDD2

5-1

VIN

VIN

VIN

SCL

SDA

SYNC

ALER

TB

GPIO

0BGP

IO1B

SCRUN1

RUN0

EXTV

CC_D

RVVI

N

VSEN

SE+

ITH1

VSEN

SE+

VSEN

SE-

INTV

CC-1

TG0-

1

SW0-

1

BG0-

1

TG1-

1

SW1-

1

BG1-

1

SW1-

1

TG1-

1

BG1-

1

SW0-

1

TG0-

1

BG0-

1

REVI

SION

HIS

TORY

DESC

RIPT

ION

DATE

APPR

OVED

ECO

REV

YI S

.1s

t PRO

TOTY

PE1

3-23

-12

__

REVI

SION

HIS

TORY

DESC

RIPT

ION

DATE

APPR

OVED

ECO

REV

YI S

.1s

t PRO

TOTY

PE1

3-23

-12

__

REVI

SION

HIS

TORY

DESC

RIPT

ION

DATE

APPR

OVED

ECO

REV

YI S

.1s

t PRO

TOTY

PE1

3-23

-12

__

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 95

035

Phon

e:(4

08)4

32-1

900

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

14

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 95

035

Phon

e:(4

08)4

32-1

900

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

14

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 95

035

Phon

e:(4

08)4

32-1

900

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

14

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

C23

10nF

R18

1K

C80

10uF

TP6

VIN

C5 10uF

D12 1

R42

R35

24.9

K

+C3

0

330u

F

R34

24.9

K

L1

0.4u

H

TP2

VDD3

3-1

R7 10K

C12

100u

F

R25 0

C8 1uF

R86

R6 10K

R33

20K

R23

1K

+C2

9

330u

F

R12

R85

L20.

4uH

R39

10K

J11

GND

Q8

MMBT3906LT1G

+C2

8

330u

F

C17

R22 0

R29

10K

C13

100u

FR1

4OP

T

R30

0

Q10

12

53

4

TP5

INT/

EXTV

CC-1

J9VO

UT0

+C2

7

330u

F

R5 10K

J1VI

N

R11

OPT

C18

100p

FC2

00.

22uF

R27

0

+C1

033

0uF

R9

R37

OPT

R41

15K

C610

0nF

R30

C31

100u

F

Q7

12

53

4

+C3 15

0uF

TP16

VOUT

O-

+C1

533

0uF

R21

0

C11

100u

F

J2GN

D

C35

1uF

C33

100u

F

C19

100p

FR1

7

PHASE

Q2FD

MS3

600S

1

2

5

3

4

6

7

8

9

C16

TP3VD

D25-

1

Q11

12

53

4

R31

1K

C7 1uF

D2

2 1

R43

5.76

K

C22

10uF

Q5

MMBT3906LT1G

C34

0.22

uF

C26

100n

F

PHASE

Q1FD

MS3

600S

1

2

5

3

4

6

7

8

9

R45 0

R1OP

T

C21

1uF

U1LT

C388

0EUJ VS

ENSE

0+1

VSEN

SE0-

2

ISNS

1+3

ISNS

1-4

ITH0

5

ISNS

0+6

ISNS

0-7

SYNC

8

SCL

9

SDA

10

ALER

T11

GPIO

012

GPIO

113

RUN0

14RU

N115

ASEL

16

FREQ

_CFG

17

VOUT

0_CF

G18

VOUT

1_CF

G19

VTRI

M0_

CFG

20

VTRI

M1_

CFG

21

VDD2522

WP

23

SC24

VDD3325

ITH1

26

VSEN

SE1

27

TSNS

128

SW1

29

TG1

30

BOOS

T131

BG1

32

INTVCC33

PGND 34

VIN35

BG0

36

BOOS

T037

TG0

38

SW0

39

TSNS

040

GND 41

R32

20K

R16

0

R44 0

Q9

12

53

4

+C9 330u

FR1

0 0

TP4GN

D

R19

R80

+C1

433

0uF

C32

100u

F

R13

1K

R22

C25

10nF

R74

TP15

VOUT

O+

C81

10uF

R15

R36

OPT

R40

R83

+C6

915

0uF

R8 10K

R20

0

C74

10uF

TP9

GND

R84

C82

10uF

R24

OPT

R40

11K

R26

OPT

R38

10K

C2 0.22

uF

C1 4.7u

F

R28

OPT

13Rev. B

DEMO MANUAL DC1740A


4 4

3 3

2 2

1 1

DD

CC

BB

AA

PLAC

E Q1

5,Q18

NEA

R L4

,L3.

RESP

ECTI

VELY

2512

2512

SGND

AND

PGN

D CO

NNEC

TED

ATA

SING

LE N

ODE

NEAR

U1

D3L

D3L

D3L

D3L

D3L

D3L

D3L

D3L

1.5V

/ 75A

ADDR

ESS:

0x4

90 0

OPTI

ONAL

FOR

DISC

RETE

MOS

FET

VDD25-2

VIN

VDD2

5-2

VDD3

3-2

VIN

VIN

VOUT

1

VDD3

3-2

VDD3

3-2

VIN

VIN

SYNC AL

ERTB

EXTV

CC_D

RV

RUN1

GPIO

1B

SCL

SDA

SC

VSEN

SE+

VSEN

SE-

ITH1VI

NSW

0-2

BG0-

2

TG0-

2

TG1-

2SW

1-2

BG1-

2

SW0-

2

TG0-

2

BG0-

2

SW1-

2

TG1-

2

BG1-

2

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 95

035

Phon

e:(4

08)4

32-1

900

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Wedn

esda

y, Ju

ne 14

, 201

72

4

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 95

035

Phon

e:(4

08)4

32-1

900

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Wedn

esda

y, Ju

ne 14

, 201

72

4

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 95

035

Phon

e:(4

08)4

32-1

900

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Wedn

esda

y, Ju

ne 14

, 201

72

4

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

C45

100u

F

R64

0

R48

0

TP21VD

D33-

2

R56

4.87

K

C54

1uF

C64

100u

F

R46

OPT

R79

0

R95 0

R62 1K

Q12

12

53

4

R96

10K

R72

24.9

K

R50

0

TP20GN

D

TP19VD

D25-

2

R55

0

J3VO

UT1

L4 0.4u

H

R47

2

Q14

12

53

4+C4

733

0uF

R57

1K

C68

1uF

R59

0

C58

10uF

J4GN

D

Q13

12

53

4Q1

6

12

53

4

+C4

633

0uF

Q15

MMBT3906LT1G

C39

100n

F

R54

OPT

R53

OPT

TP26 VO

UT1-

R73

OPT

R51

1K

D42 1

C42

1uF

R77

R89

0

TP22

INT/

EXTV

CC-2

C83

10uF

Q18

MMBT3906LT1G

R61

0

C85

10uF

D32 1

C59

100n

F

R65

OPT

R63

OPT

PHASE

Q4FD

MS3

600S

1

2

5

3

4

6

7

8

9

C41

1uF

R60

0

C44

100u

F

C86

10uF

C67

0.22

uF

+C6

033

0uF

R49

0

C84

10uF

R66

0

C65

100u

F

C43

100u

F

+C6

333

0uF

C40

0.22

uF

C52

100p

F

R76

12.7

K

U2LT

C388

0EUJ VS

ENSE

0+1

VSEN

SE0-

2

ISNS

1+3

ISNS

1-4

ITH0

5

ISNS

0+6

ISNS

0-7

SYNC

8

SCL

9

SDA

10

ALER

T11

GPIO

012

GPIO

113

RUN0

14RU

N115

ASEL

16

FREQ

_CFG

17

VOUT

0_CF

G18

VOUT

1_CF

G19

VTRI

M0_

CFG

20

VTRI

M1_

CFG

21

VDD2522

WP

23

SC24

VDD3325

ITH1

26

VSEN

SE1

27

TSNS

128

SW1

29

TG1

30

BOOS

T131

BG1

32

INTVCC33

PGND 34

VIN35BG

036

BOOS

T037

TG0

38

SW0

39

TSNS

040

GND 41

R68

0

L3

0.4u

H

PHASE

Q3FD

MS3

600S

1

2

5

3

4

6

7

8

9

C50

4.7n

F

R75

0

C36

4.7u

F

+C6

233

0uF

C66

100u

F

C57

10nF R7

1

R69

1K

+C4

933

0uF

R90

0

+C6

133

0uF

C53

0.22

uF

TP24 VO

UT1+

R67

0

R70

20K

R94

OPT

R52 0

R91

10K

R58

0

R78

5.76

K

C56

10nF

C37

10uF

+C4

833

0uF

C51

100p

F

14Rev. B

DEMO MANUAL DC1740A


4 4

3 3

2 2

1 1

DD

CC

BB

AA

NOTE

:PU

LSE

OUT

10m

V / A

MP

DYNA

MIC

LOAD

CIR

CUIT

VOUT

LED

ON OFF

EXTV

CC_D

RV

ON OFF

GPIO

1GP

IO0

ALER

T

IOUT

TES

T

VOUT

1

+3.3

V

VIN

VIN

+3.3

V+3

.3V

+3.3

V

3V3

VDD3

3-1

VIN

3V3

VDD3

3-2

VIN

EXTV

CC_D

RV

GPIO

0BGP

IO1B

ALER

TB

VIN

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 9

5035

Phon

e: (4

08)4

32-1

900

1630

McC

arth

y Blvd

.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

34

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 9

5035

Phon

e: (4

08)4

32-1

900

1630

McC

arth

y Blvd

.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

34

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 9

5035

Phon

e: (4

08)4

32-1

900

1630

McC

arth

y Blvd

.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

34

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

R103

0.02

D5GR

EEN

U4

LT11

29CS

8-3.

3OU

TPUT

1SE

NSE/

ADJ

2GN

D3

NC4

SHDN

5

GND

6

GND

7

VIN

8

Q26

TP01

01K

23

1

J61

2345

Q25

TP01

01K

23

1

R101

200

C72

0.22

uF

R105

100K

D7RE

D

C78

0.22

uF

C77

1uF

R106

50

R104

127

C76

4.7u

F

J51

2345

D6GR

EEN

Q24

2N70

02A

23

1

JP4

1

2

3

TP40

PULS

E IN

Q21

SUD5

0N03

-10C

P-E3

1

23

TP42

GND JP

3 1

2

3

C73

1uF

R87

10K

R100

200

R102

10K

R81

10K

Q22

TP01

01K

2 3

1

U5

LT11

29CS

8-5

OUTP

UT1

SENS

E/AD

J2

GND

3NC

4SH

DN5

GND

6

GND

7

VIN

8

C75

10uF

R88

10K

R111

0.02

Q23

2N70

02A

23

1

R82

10K

R107

100K

15Rev. B

DEMO MANUAL DC1740A

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.


4 4

3 3

2 2

1 1

DD

CC

BB

AA

TO D

C161

3A

ALL

PA

RTS

ON

TH

IS P

AG

E A

RE

FO

R D

EM

O O

NLY

, NO

T N

EE

DE

D IN

CU

STO

ME

R D

ES

IGN

ON

OF

F

ON

OF

F

RUN0

RUN1

CNC

GPIO

0-GP

IO1

RUN0

-RUN

1NC

C

SH

AR

E_C

LK

FAU

LT1

FAU

LT3

SY

NC

_C

AU

XV

CC

EE

WP

EE

SD

A

EE

SC

L

FAU

LT2

VDD3

3-1

3V3

VDD3

3-2

3V3

ALER

TBSD

ASC

L

RUN0

RUN1

GPIO

1B

GPIO

0BSY

NC SC

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 9

5035

Phon

e: (4

08)4

32-1

900

1630

McC

arth

y Blvd

.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

44

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 9

5035

Phon

e: (4

08)4

32-1

900

1630

McC

arth

y Blvd

.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

44

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

SIZE

DATE

:

IC N

O.RE

V.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA 9

5035

Phon

e: (4

08)4

32-1

900

1630

McC

arth

y Blvd

.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OMER

NOT

ICE

LINE

AR T

ECHN

OLOG

Y HA

S MA

DE A

BES

T EF

FORT

TO

DESI

GN A

CIRC

UIT

THAT

MEE

TS C

USTO

MER-

SUPP

LIED

SPE

CIFI

CATI

ONS;

HOW

EVER

, IT R

EMAI

NS T

HE C

USTO

MER'

S RE

SPON

SIBI

LITY

TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORMA

NCE

OR R

ELIA

BILI

TY.

CONT

ACT

LINE

ARTE

CHNO

LOGY

APP

LICA

TION

S EN

GINE

ERIN

G FO

R AS

SIST

ANCE

.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MATI

C

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

www.

linea

r.com 1

Tues

day,

June

13, 2

017

44

POLY

PHA

SE D

C/D

C C

ON

VER

TER

WIT

H D

IGIT

AL

PWR

MA

NA

GEM

ENT

HZ YI S

.

N/A

LTC3

880E

UJ F

AMIL

YDE

MO C

IRCU

IT 17

40A

TP14 RU

N0

TP30

SGND

R127

OPT

R116

0

U6 24LC

025-

I/ST

A01

A12

A23

VSS

4SD

A5

SCL

6W

P7

VCC

8

R113

10

TP7

SDA

R120

4.99

K

R128

OPT.

R109

0

C79

100n

F

TP10

SCL

R121

4.99

K

R117

OPT

JP5

1

2

3

R122

4.99

K

R114

10

SW4

1

2

34

5

6

SW3

1

2

34

5

6

TP23

SC

TP25

AUXP

C70

10nF

R118

OPT

J7DE

MO

HEAD

ER (F

)

+3.3

V1

VIN_

SNS

2GN

D3

VIN_

EN4

SCL

5AL

ERTB

6SD

A7

CONT

ROL0

8SP

ARE1

9SP

ARE2

10W

DI/R

ESET

B11

CONT

ROL1

12SP

ARE3

13SH

ARE_

CLK

14FA

ULT4

15FA

ULT2

16FA

ULT3

17FA

ULT1

18SP

ARE4

19GN

D20

TP8 SG

ND

JP2

1

2

3

C71

10nF

TP27

SYNC

TP11 GP

IO1B

R119

0TP

12 GPIO

0B

R124

OPT

R126

OPT

J8DE

MO

HEAD

ER (M

)

+3.3

V1

VIN_

SNS

2GN

D3

VIN_

EN4

SCL

5AL

ERTB

6SD

A7

CONT

ROL0

8SP

ARE1

9SP

ARE2

10W

DI/R

ESET

B11

CONT

ROL1

12SP

ARE3

13SH

ARE_

CLK

14FA

ULT4

15FA

ULT2

16FA

ULT3

17FA

ULT1

18SP

ARE4

19GN

D20

R110

10K

TP28

ALER

TB

J10

AUXP

1SD

A2

GND

3SC

L4

LGKP

WR

5AL

ERTB

6GP

IO_1

7OU

TEN_

08

OUTE

N_1

9GN

D10

AUXS

CL11

AUXS

DA12

R129 0

R115

0

TP13 RU

N1

R112

10K

16Rev. B

DEMO MANUAL DC1740A

ANALOG DEVICES, INC. 2013–2018

10/18www.analog.com

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. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. 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.

http://www.analog.com

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