Linear Technology Analog Devices DC2728A Quick setup guide

1
DEMO MANUAL DC2728A
Rev. 0
DESCRIPTION
LTC7880
High Voltage Dual Step-up DC/DC Converter
with Digital Power System Management
Demonstration circuit 2728A is a high voltage, dual output
boost converter with 12V to 24V input range. The output
voltage is adjustable from V
IN
to 48V. Each output can
supply 5A maximum load current. The demo board has a
LTC
®
7880 controller, which is a 60V dual output step-up
controller with digital power system management. Please
see LTC7880 data sheet for more detailed information.
DC2728A powers up to default settings and produces
power based on configuration resistors or its nonvola-
tile memory (NVM) without the need for any serial bus
communication. This allows easy evaluation of the DC/
DC converter. To fully explore the extensive power sys-
tem management features of the part, download the GUI
All registered trademarks and trademarks are the property of their respective owners.
BOARD PHOTO
software LTpowerPlay
®
onto your PC and use ADI’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:
LTpowerPlay
For more details and instructions of LTpowerPlay, please
refer to LTpowerPlay GUI for LTC7880 Quick Start Guide.
Design files for this circuit board are available.
Figure1. Dual Output LTC7880/DC2728A Demo Circuit

2
DEMO MANUAL DC2728A
Rev. 0
Demonstration circuit 2728A is easy to set up to evaluate
the performance of the LTC7880. Refer to Figure2 for
the proper measurement equipment setup and follow the
procedure below.
1. With power off, connect the input power supply to VIN
(12V to 24V) and GND (input return). Make sure the
input power supply is capable of 35A at 12V.
2. Connect the 24V output load between VOUT0 and GND
(Initial Load: no load).
3. Connect the 48V output load between VOUT1 and GND
(Initial Load: no load).
4. Connect the DVMs to the input and outputs. Set default
jumper position:SW1:ON;SW2:ON; JP1: OFF; JP2:
NC; JP3: NC.
5. Turn on the input power supply and check for the
proper output voltages. VOUT0 should be 24V ± 0.5%,
and VOUT1 should be 48V ± 0.5%.
PARAMETER CONDITIONS VALUE
Input Voltage Range 12V to 24V
Output Voltage, VOUT0 VIN = 12V to 24V, IOUT0 = 0A to 5A 24V to 48V, Default: 24V
Maximum Output Current, IOUT0 VIN = 12V to 24V, VOUT0 = 24V to 48V 5A
Output Voltage, VOUT1 VIN = 12V to 24V, IOUT1 = 0A to 5A 24V to 48V, Default: 48V
Maximum Output Current, IOUT1 VIN = 12V to 24V, VOUT1 = 24V to 48V 5A
Typical Efficiency of CH0 VIN =12V, VOUT0 = 24V, IOUT0 = 5A 98.1% (See Figure5)
Typical Efficiency of CH1 VIN = 12V, VOUT1 = 48V, IOUT1 = 5A 97.1% (See Figure6)
Default Switching Frequency 150kHz
6. 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.
7. Connect the dongle and control the output voltages
from the GUI. See the LTpowerPlay GUI for the LTC7880
Quick Start Guide for details.
NOTE:When measuring the output or input voltage
ripple, do not use the long ground lead on the oscil-
loscope probe. See Figure3 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.
QUICK START PROCEDURE
PERFORMANCE SUMMARY
Specifications are at TA= 25°C

3
DEMO MANUAL DC2728A
Rev. 0
Figure2. Proper Measurement Equipment Setup
Figure3. Proper Measurement Equipment Setup
V
OUT
GND
QUICK START PROCEDURE

4
DEMO MANUAL DC2728A
Rev. 0
Connecting a PC to DC2728A
You can use a PC to reconfigure the power management
features of the LTC7880 such as:nominal VOUT, mar-
gin set points, OV/UV limits, temperature fault limits,
sequencing parameters, the fault log, fault responses,
GPIOs and other functionalities. The DC1613A dongle
may be plugged when VIN is present.
LOAD CURRENT (A)
0
1
2
3
4
5
95.0
95.5
96.0
96.5
97.0
97.5
98.0
98.5
99.0
99.5
100.0
EFFICIENCY (%)
dc2728a F05
VOUT0 = 24V
LOAD CURRENT (A)
0
1
2
3
4
5
95.0
95.5
96.0
96.5
97.0
97.5
98.0
98.5
99.0
99.5
100.0
EFFICIENCY (%)
dc2728a F06
VOUT1 = 48V
Figure4. Demo Setup with PC
Figure5. Efficiency vs Load Current on CH0 (CH1 is Disabled) Figure6. Efficiency vs Load Current on CH1 (CH0 is Disabled)
QUICK START PROCEDURE

5
DEMO MANUAL DC2728A
Rev. 0
Figure7. VOUT0 Load Transient Response at VIN = 12V, VOUT0 = 24V Figure8. VOUT1 Load Transient Response at VIN = 12V, VOUT1 = 48V
Figure9. VOUT0 Voltage Ripple at VIN = 12V, VOUT0 = 24V, IOUT0 = 5A Figure10. VOUT1 Voltage Ripple at VIN = 12V, VOUT1 = 48V, IOUT1 = 5A
Figure11. Thermal at VIN =12V, VOUT0 = 24V, IOUT0 = 5A, VOUT1 = 48V, IOUT1 = 5A, TA= 25°C, No Airflow
500μs/DIV dc2728A F07
VOUT0
20MHz BW
200mV/DIV
0A TO 1.25A
LOAD STEP
500μs/DIV dc2728A F08
VOUT1
20MHz BW
200mV/DIV
0A TO 1.25A
LOAD STEP
10μs/DIV dc2728A F09
VOUT0
20MHz BW
200mV/DIV
10μs/DIV dc2728A F10
VOUT1
20MHz BW
500mV/DIV
QUICK START PROCEDURE

6
DEMO MANUAL DC2728A
Rev. 0
Figure12. LTpowerPlay Main Interface
LTpowerPlay is a powerful Windows-based development
environment that supports Analog Devices power sys-
tem management ICs and μModule
®
products, including
LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,
LTM4700, LTM4664, LTC3880, LTC3882, LTC3883,
LTC3884 and LTC7880. The software supports a variety
of different tasks. You can use LTpowerPlay to evaluate
Analog Devices ICs by connecting to a demo board sys-
tem. 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 LTM4675,
LTM4676, LTM4677, LTM4678, LTM4680, LTM4700,
LTM4664, LTC3880, LTC3882, LTC3883, LTC3884 and
LTC7880’s 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:
LTpowerPlay
To access technical support documents for ADI Digital
Power Products visit the LTpowerPlay Help menu. Online
help also available through the LTpowerPlay.
LTPOWERPLAY SOFTWARE GUI

7
DEMO MANUAL DC2728A
Rev. 0
LTPOWERPLAY QUICK START PROCEDURE
The following procedure describes how to use LTpowerPlay
to monitor and change the settings of LTC7880.
1. Download and install the LTPowerPlay GUI:
LTpowerPlay
2. Launch the LTpowerPlay GUI.
a. The GUI should automatically identify the DC2728A. 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 LTC7880 is
communicating:
c. In the Toolbar, click the “R” (RAM to PC) icon to read the
RAM from the LTC7880. This reads the configuration
from the RAM of LTC7880 and loads it into the GUI.
d. If you want to change the output voltage to a differ-
ent value, like 36V. In the Config tab, type in 36 in the
VOUT_COMMAND box, like this:
Then, click the “W” (PC to RAM) icon to write these
register values to the LTC7880. After finishing this step,
you will see the output voltage will change to 36V.
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.

8
DEMO MANUAL DC2728A
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 2 C1, C85 CAP., 330μF, HYBRID, 35V, 20%, SMD PANASONIC, EEHZK1V331P
2 3 C3, C37, C38 CAP., 2.2μF, X5R, 50V, 10%, 0603 MURATA, GRM188R61H225KE11D
3 4 C4, C5, C27, C33 CAP., 0.01μF, X7R, 100V, 10%, 0603 AVX, 06031C103KAT2A
4 3 C6, C13, C28 CAP., 0.001μF, X7R, 100V, 10%, 0603 AVX, 06031C102KAT2A
5 2 C9, C23 CAP., 0.1μF, X7R, 100V, 10%, 0603 AVX, 06031C104KAT2A
6 8 C10-C12, C24-C26, C88, C93 CAP., 4.7μF, X7S, 100V, 10%, 1210 TDK, C3225X7S2A475K200AB
7 8 C14, C15, C16, C17, C29, C30, C31, C32 CAP., 68μF, ALUM. ELECT., 63V, 20%, 10mm ×
10.2mm SMD, AEC-Q200
PANASONIC, EEHZC1J680P
8 2 C18, C34 CAP., 0.0047μF, X7R, 50V, 10%, 0603 SAMSUNG, CL10B472KB8NNNC
9 2 C20, C36 CAP., 100pF, C0G, 50V, 5%, 0603 AVX, 06035A101JAT2A
10 2 C39, C40 CAP., 4.7μF, X5R, 35V, 10%, 0603 MURATA, ZRB18AR6YA475KE05L
11 1 C77 CAP., 1000pF, C0G, 100V, 5%,0805 MURATA, GRM2195C2A102JA01D
12 8 C94, C95, C104-C109 CAP., 22μF, 20%, 35V, JB, 1206 TDK, C3216JB1V226M160AC
13 3 D1, D2, D15 DIODE, SCHOTTKY, 100V, 1A, POWER DI-123, AEC-Q101 DIODES, INC., DFLS1100-7
14 2 L1, L2 IND., 6.8μH, HIGH CURRENT, 10%, 30A, 2.06mΩ, 2815 SMD COILCRAFT, SER2915H-682KL
15 4 Q1, Q2, Q5, Q6 MOSFET, N-CH, 60V, 64A, PG-TDSON-8 INFINEON, BSC065N06LS5ATMA1
16 4 Q3, Q4, Q7, Q8 MOSFET, N-CH, 60V, 100A, PG-TDSON-8 INFINEON, BSC027N06LS5ATMA1
17 2 Q9, Q10 MOSFET, PNP, 40V, 0.2A, SC70-3 DIODES, INC., MMST3906-F
18 1 R2 RES., 0.003Ω, 1%, 1W, 2010 PANASONIC, ERJMP3MF3M0U
19 2 R3, R4 RES., 1k, 5%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW06031K00JNEA
20 9 R10, R11, R13, R15, R16, R18, R23,
R25, R28
RES., 10k,5%, 1/10W, 0603 VISHAY, CRCW060310K0JNEA
21 2 R12, R38 RES, 2Ω, 5%, 1/10W, 0603 VISHAY CRCW06032R00JNEA
22 1 R14 RES., 0.003Ω, 1%, 3W, 2512 PANASONIC, ERJMP4QF3M0U
23 10 R17, R21, R22, R30, R43-R45, R175,
R177, R178
RES., 0Ω, 1/10W, 0603 VISHAY CRCW06030000Z0EA
24 4 R24, R26, R50, R51 RES., 10Ω, 5%, 1/10W, 0603 VISHAY CRCW060310R0JNEA
25 1 R37 RES., 0.002Ω, 1%, 3W, 2512 PANASONIC, ERJMP4QF2M0U
26 1 R92 RES.,1.0Ω, 5%, 1/2W, 0805 PANASONIC, ERJ6DQJ1R0V
27 1 U1 IC, 60V DUAL OUTPUT STEP-UP CONTROLLER WITH
PSM, 52-LEAD (7mm × 8mm), QFN
ADI., LTC7880IUKG#PBF
Additional Demo Board Circuit Components
1 0 C19, C35, C71, C73 OPT, 0603
2 2 C70, C103 CAP., 1.0μF, X7S, 100V, 10%, 0805 MURATA, GRJ21BC72A105KE11L
3 1 C72 CAP., 0.047μF, X7R, 25V, 10%, 0603 AVX, 06033C473KAT2A
4 1 C74 CAP., 2.2μF, X7R, 100V, 10%, 1210 AVX, 12101C225KAT2A
5 0 C75 OPT, 1210
6 1 C76 CAP., 0.1μF, X7R, 100V, 10%, 0603 AVX, 06031C104KAT2A
7 1 C78 CAP., 0.22μF, X7R, 100V, 10%, 0805 MURATA, GRM21AR72A224KAC5L

9
DEMO MANUAL DC2728A
Rev. 0
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
8 2 C79, C80 CAP., 100μF, X5R, 16V, 20%, 1210 TAIYO YUDEN, EMK325ABJ107MM-T
9 1 C81 CAP., 220pF, X7R, 50V, 10%, 0603 AVX, 06035C221KAT2A
10 2 C82, C83 CAP., 0.01μF, X7R, 100V, 10%, 0603 AVX, 06031C103KAT2A
11 1 C84 CAP., 0.1µF, 20%, 25V, X5R, 0603 AVX, 06033D104KAT2A
12 0 C86, C87 OPT, 10mm × 10.2mm
13 1 C110 CAP., 1μF, X5R, 50V, 10%, 0603 MURATA, GRT188R61H105KE13D
14 2 D5, D6 LED, GREEN, COLORLESS DIFFUSED, 0603 OSRAM, LS L29K-G2J1-24-Z
15 3 D7, D16, D17 LED, RED, COLORLESS DIFFUSED, 0603 OSRAM, LS L29K-H1J2-1-Z
16 3 D8, D9, D12 OPT
17 1 L5 IND., 68μH, PWR, ±30%, 1.65A, 201mΩ, SMD
10.5mm × 10.3mm × 5.1mm
SUMIDA, CDRH105RNP-680NC
18 1 Q19 MOSFET, N-CH 80V TO-263 INFINEON, IPB031N08N5
19 3 Q20, Q30, Q31 MOSFET, P-CH, 20V, 5.9A, SOT-23, TO-236 VISHAY, SI2365EDS-T1-GE3
20 2 Q22, Q23 MOSFET, N-CHAN,60V,115mA,SOT-23 FAIRCHILD SEMI., 2N7002
21 0 Q27 OPT, SOT23
22 0 R5, R6 OPT,2512
23 0 R19, R20, R29, R31-R36, R39-R42,
R46-R48, R49, R100-R105, R108, R110,
R111, R116-R118, R121, R144, R145,
R147, R148, R169, R173, R176, R183,
R184
OPT, 0603
24 2 R87, R88 RES., 200Ω, 5%, 1/10W, 0603 VISHAY CRCW0603200RJNEA
25 4 R89, R97, R112, R113 RES., 10k, 5%, 1/10W, 0603 VISHAY, CRCW060310K0JNEA
26 0 R90 OT, 0805
27 1 R91 RES., 1Ω, 1%, 1W, 2010, SENSE, AEC-Q200 WELWYN COMPONENTS/TT ELECT.,
LRC-LR2010-01-1R00-F
28 3 R93, R179, R180 RES., 127Ω, 1%, 1/10W, 0603 VISHAY CRCW0603127RFKEA
29 1 R96 RES., 127k, 1%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ-3EKF1273V
30 3 R98, R106, R109, R132, R174 RES., 0Ω, 1/10W, 0603 VISHAY CRCW06030000Z0EA
31 1 R99 RES., 220k, 5%, 1/10W, 0603 VISHAY CRCW0603220KJNEA
32 0 R107, R163 OPT, 1206
33 2 R114, R115 RES., 10Ω,5%, 1/10W, 0603 VISHAY CRCW060310R0JNEA
34 2 R119, R120 RES., 4.99k, 1%, 1/10W, 0603 VISHAY CRCW06034K99FKEA
35 1 R146 RES., 4.7Ω, 1%, 1/8W, 0805 VISHAY, CRCW08054R70FKEA
36 1 R157 RES, 2Ω, 5%, 1/10W ,0603 VISHAY CRCW06032R00JNEA
37 2 R162, R185 RES, 0Ω, JUMPER 1206 VISHAY CRCW12060000Z0EA
38 1 U3 IC, SYNCHR. STEP-DOWN CONVERTER, MSOP-16 ANALOG DEVICES,
LTC3630EMSE#PBF
39 1 U4 IC, MEMORY, EEPROM, 2Kb (256×8), TSSOP-8, 400kHz MICROCHIP, 24LC025-I/ST
PARTS LIST

10
DEMO MANUAL DC2728A
Rev. 0
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Hardware: For Demo Board Only
1 27 E1-E8, E11, E14, E18, E20-E27, E29,
E30, E32, E35-E40
TEST POINT, TURRET, 0.094, MTG. HOLE MILL-MAX, 2501-2-00-80-00-00-07-0
2 3 JP1, JP2, JP3 CONN.,HDR,MALE,1×3, 2mm, THT, STR WURTH ELEKTRONIK, 62000311121
3 2 J1, J2 STUD, FASTENER, #10-32 PENNENGINEERING, KFH-032-10ET
4 4 J1, J2 x2 NUT, BRASS 10-32 ANY, 10-32M/S BR PL
5 2 J1, J2 RING, LUG #10 KEYSTONE, 8205
6 2 J1, J2 WASHER, TIN PLATED BRASS #10 ANY, #10EXT BZ TN
7 4 J3, J4, J5, J6 CONN.,BANANA JACK, FEMALE, THT, NON-
INSULATED, SWAGE
KEYSTONE, 575-4
8 3 J7, J12, J13 CONN., RF, BNC, RCPT,THT, STR, 5-PIN AMPHENOL CONNEX, 112404
9 1 J9 CONN.,HDR, MALE, 2×7,2mm, R/A THT MOLEX, 87760-1416
10 1 J10 CONN.,HDR, FEMALE, 2×7, 2mm, R/A THT SULLINS, NPPN072FJFN-RC
11 1 J11 CONN.,HDR, SHROUDED, 2×6, 2mm, THT, VERT FCI, 98414-G06-12ULF
12 3 XJP1, XJP2, XJP3 CONN., SHUNT, FEMALE, 2 POS, 2mm WURTH ELEKTRONIK, 60800213421
13 4 STANDOFF STANDOFF, NYLON, SNAP-ON, 0.625 (15.9mm) KEYSTONE, 8834
14 1 SW1,SW2 SWITCH, SUB-MINIATURE SLIDE, DPDT, 0.3A, 6VDC, THT C&K COMPONENTS, JS202011CQN
PARTS LIST

11
DEMO MANUAL DC2728A
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D C C B B A A
OPT 0
10
10
OPT
0
10
10
OPT
1nF
OPT 0
OPT
1. ALL RESISTORS AND CAPACITORS ARE 0603.
NOTE: UNLESS OTHERWISE SPECIFIED
OPT
1nF
0
2 FOR SINGLE OUTPUT CONFIGURATION.
Optional Resistors for Single Output Configuration
2
2 22
22
FAULT0B-FAULT1B
RUN0-RUN1
DRVCC
VDD25
VOUT0
VIN
VDD25
VOUT1
VDD33
VOUT0
VDD33
VIN
VOUT1
VOUTX
VOUT0
VIN
VIN
VIN
VOUT1
VOUTX
FAULT1B
RUN0 RUN1
SCL
PG0 PG1
SDA
ALERTB
SHARE_CLK
FAULT0B FAULT1B
VSENSE0+
FAULT0B
SYN C SW0
SW1
EXTVCC
VDD33 VDD25
VSENSE1+
VSENSE1+ VSENSE0+
PG0
PG1ITH1 VSENSE1+
ITHR0
ITHR1
VSENSE0+ITH0
VBIAS
VBIAS EXTVCC
VSENSE0+VSENSE0+
EXT_SUPPLY
FAULT1B
FAULT0B
RUN0 RUN1
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
13
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
13
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
13
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
X.CHEN
Prod2 7-31-19
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
X.CHEN
Prod2 7-31-19
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
X.CHEN
Prod2 7-31-19
__
C23 0.1uF
R47
JP3
NCC
13
2
R11 10K
C33
10nF
E2
DRVCC
E22
FAULT1B
R21
E11
FAULT0B
R26
R148 OPT
Q3
BSC027N06LS5
1
2
5
3
4
R41 OPT
J4
GND
R4 1k
R22
Q9
R43
C37
2.2uF
16V
R20
R16 10K
+
C87 OPT
JP2
NCC
13
2
R121 OPT
R23 10K
D2
21
R51
R48 OPT
Q5 BSC065N06LS5
1
2
5
3
4
Q4
BSC027N06LS5
1
2
5
3
4
R14
3m
2512
1%
3W
C34 4.7nF
+
C32
68uF 63V
R33 OPT
C9 0.1uF
C108 22uF 35V
1206
C39
4.7uF
35V
R38 2
E38
VDD25
J1
VIN
12V - 24V
C12
4.7uF
100V 1210
Q2
BSC065N06LS5
1
2
5
3
4
R35 OPT
+
C30 68uF 63V
R92 1
0805
L2
6.8uH
SER2915H-682KL
C106 22uF 35V 1206
Q10
R17 0
R5 OPT 2512
R39 OPT
C40
4.7uF
35V
+
C17
68uF 63V
C13
R12 2
C28
+
C85 330uF
35V
R32 OPT
C71 OPT
R15 10K
+
C29 68uF 63V
E40
EXTVCC
C27
10nF
+
C14
68uF 63V
+
C86 OPT
R173 OPT
U1
LTC7880IUKG
SW0 1
TG0 2
VSENSE1+ 3
ISENSE0+ 4
ISENSE0- 5
TSNS0
6
VIN0 7
NC 8
ISENSE1+ 9
ISENSE1- 10
11
ITHR0
ITH0 12
SYNC
13
SCL
14
SDA
15
ALERTB
16
FAULT0
17
FAULT1
18
RUN0
19
RUN1
20
ASEL0
21
ASEL1
22
VOUT0_CFG
23
VOUT1_CFG
24
FREQ_CFG
25
PHAS_CFG
26
VDD25
27
WP
28
SHARE_CLK
29
VDD33
30
ITH1 31
ITHR1 32
PGOOD1
33
PGOOD0
34
VIN1 35
TSNS1
36
NC 37
TG1 38
SW1 39
BOOST1 40
NC 41
BG1 42
EXTVCC
43
DRVCC
44
VBIAS 48
IOUT+ 47
IOUT- 46
VSENSE0+ 45
NC 49
BG0 50
NC 51
BOOST0 52
R2
3m 2010
1%
1W
E3
VIN
C94 22uF 35V 1206
E36
PG1
+
C16
68uF 63V
C88
4.7uF
100V 1210
R3 1k
E37
VDD33
C18
4.7nF
C35
C36
100pF
R6 OPT 2512
R44
C5
10nF
L1
6.8uH
SER2915H-682KL
R42
R28 10K
R90 OPT
0805
C3
2.2uF 50V
E5
VOUT0_SNS
C4
10nF
R46 OPT
R18 10K
R176 OPT
J5
VOUT1 48V / 5A
+
C1 330uF
35V J2
GND
R37
2m 2512
1%
3W
R10 10K
E35
PG0
E39
VBIAS
D1
21
C11 4.7uF
100V 1210
E1
GND
Q6 BSC065N06LS5
1
2
5
3
4
R118 OPT
R25 10K
C10 4.7uF
1210 100V
R169 OPT
R183 OPT
Q7
BSC027N06LS5
1
2
5
3
4
C6
1nF
R31 OPT
C25
4.7uF
1210 100V
E6
GND
+
C31
68uF 63V
C38
2.2uF
16V
C77 1000pF
R184 OPT
R50
D15
2 1
E8
GND
R177
0
R178
0
R49 OPT
J6
GND
R40 OPT
R30 0
R36 OPT
R175 0
C93 4.7uF
100V
1210
C24
4.7uF
100V 1210
R19
C109 22uF 35V 1206
C104 22uF
35V
1206
R13 10K
R24
C105 22uF
35V
1206
E7
VOUT1_SNS
C107 22uF 35V 1206
C26
4.7uF
1210 100V
R45 0
+
C15 68uF 63V
R34 OPT
E4
GND
C19
Q1
BSC065N06LS5
1
2
5
3
4
C20
100pF
R29 OPT
Q8
BSC027N06LS5
1
2
5
3
4
J3
VOUT0
24V / 5A
C95 22uF 35V 1206
TSNS1
DRVCC
WP
SW1 ITH0 TG1 ITHR0 TG0SYN C
TSNS0
RUN0
SCL
ITHR1
SDA
ITH1
ALERTB
RUN1
SHARE_CLK
PG0
BG1
PG1
ISENSE1- VIN0SNS BOOST0 SW0 BG0 ISENSE0+ ISENSE0- VIN1SNS
FAULT0B
ISENSE1+
FAULT1B
BOOST1

12
DEMO MANUAL DC2728A
Rev. 0
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B B A A
VOUT1
NOTE: PULSE OUT 1V / AMP
DYNAMIC LOAD CIRCUIT
DO NOT EXCEED 5% DUTY CYCLE!
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
VOUT0
ALERTB
PG0 PG1
FAULT0B FAULT 1B
11V
IOSTEP
VOUT1
VOUT0 VOUT1
EXT_SUPPLY
VIN
VOUT0
VIN
VIN
3V3 VDD33
3V3 3V33V3
3V3 3V3 EXT_SUPPLY
PG1
ALERTB
PG0
FAULT1B
FAULT0B
VDD33
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
23
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
23
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
23
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
C72 47nF
R132 0
R87 200
E14
PULSE IN
J7
1
2
3
4
5
J12
1
2
3
4
5
R185
0
1206
R91 1 1% 2010
R147
OPT
Q19 IPB031N08N5 80V
3 2
1
R162
0
1206
R174
0
Q22
2N7002A
2 3
1
R146 4.7 0805 1%
R98 0
C74
2.2uF
100V
1210
C81 220pF
R99 220k
D17 RED
R144 OPT
R163 OPT 1206
E18
GND
J13
1
2
3
4
5
C73 OPT
R100 OPT
D8
OPT
D16 RED
Q20 SI2365EDS-T1-GE3
23
1
R96 127K
C80 100uF 16V 1210
Q27
OPT
23
1
Q31 SI2365EDS-T1-GE3
23
1
L5
68uH
SUMIDA CDRH105RNP-680NC
Q23
2N7002A
2 3
1
R145 OPT
R97 10K
C110 1.0uF
U3
LTC3630EMSE
SW 1
GND
14
VPRG1 7
GND
8
VPRG2 6
VIN
3
RUN
5
FBO
12
VFB 9
SS 10
ISET
11
GND
16
GND
17
R157
2
C79 100uF 16V 1210
Q30 SI2365EDS-T1-GE3
23
1
R180 127
R89 10K
C70 1uF 100V 0805
D5 GREEN
E20
EXT_SUPPLY
R88 200
R179 127
E21
GND
C75 OPT 1210
D7 RED
C78 220nF 100V 0805
D6 GREEN
C103 1uF 100V 0805
R93 127
JP1 ON
OFF
EXT 11V
13
2
C76 0.1uF
R101 OPT
VIN

13
DEMO MANUAL DC2728A
Rev. 0
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.
SCHEMATIC DIAGRAM
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
TO DC1613A
ON OFF
ON
OFF
RUN0RUN1
VIN
3V3
VDD33 VDD33
3V3
SYNC
SHARE_CLKALERTB SDA SCL
RUN0 RUN1 FAULT1B FAULT0B
VDD33
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
33
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
33
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
DATE:
IC NO.
SHEET OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB DES. APP ENG. Phone: [phone]
Milpitas, CA 95035
1630 McCarthy Blvd.
For ADI Customer Use Only
CUSTOMER NOTICE
ANALOG DEVICES INC. HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT ANALOG DEVICES INC. APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES INC. AND SUPPLIED FOR USE WITH ANALOG DEVICES INC. PARTS.
SCALE = NONE
SIZE:
SKU NO. SCHEMATIC NO. AND REVISION:
PCA BOM: PCA ASS'Y:
www.analog.com
33
HZ
X. Chen
LTC7880IUKG
DC2728A
DC2728A_REV02
DC2728A_REV02
N/A
Thursday, December 05, 2019
DC2728A_REV02
HIGH VOLTAGE DUAL STEP-UP DC/DC CONVERTER
WITH POWER SYSTEM MANAGEMENT
R102 OPT
R105 OPT
R104 OPT
J9 DEMO HEADER (M)
FAULTB 1
CTRL 2
ALERTB 3
SDA 4
SHARE_CLK 5
SCL 6
RESETB 7
AUXP 8
UNUSED 9 UNUSED 10
GND 11 GND 12
12V 13 12V 14
E30
RUN1
R115 10
SW1
1
2
3
4
5
6
R114 10
U4
24LC025-I/ST
A0
1
A1
2
A2
3
VSS
4SDA 5
SCL 6
WP 7
VCC 8
E24
SDA
D12 OPT
R119 4.99K
R103 OPT
E23
ALERTB
R112 10K
C84
100nF
E25
SCL
R106 0
R120 4.99K
E32
SGND
R113 10K
R111 OPT
R109
0
E26
SHARE_CLK
R107 OPT 1206
R116 OPT
J11
AUXP 1
SDA 2
GND 3
SCL 4
LGKPWR 5
ALERTB 6
GPIO_1 7
OUTEN_0 8 OUTEN_1 9
GND 10
AUXSCL 11
AUXSDA 12
R108 OPT
SW2
1
2
3
4
5
6
D9 OPT
R110 OPT
J10 DEMO HEADER (F)
FAULTB
1
CTRL
2
ALERTB
3
SDA
4
SHARE_CLK
5
SCL
6
RESETB
7
AUXP
8
UNUSED
9
UNUSED
10
GND
11
GND
12
12V
13
12V
14
R117 OPT
E27
SYNC
C82 10nF
C83 10nF
E29
RUN0
EESDA EESCL
AUXVCC
EEWP

14
DEMO MANUAL DC2728A
Rev. 0
 ANALOG DEVICES, INC. 2020
03/20
www.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.
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