Linear Analog Devices ADI Power DC2570A Quick setup guide

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DEMO MANUAL DC2570A
DESCRIPTION
LTM4678
Dual 25A or Single 50A µModule Regulator with
Digital Power System Management,1×LTM4678, 50A
Demonstration circuit 2570A is a dual output, high effi-
ciency, high density, µModule
®
regulator with 4.5V to 16V
input range. The output voltage is adjustable from 0.5V
to 33V and it can supply 50A maximum load current. The
demo board has a LTM
®
4678 µModule regulator, which is
a dual 25A or single 50A step-down regulator with digital
power system management. Please see LTM4678 data
sheet for more detailed information.
DC2570A powers up to default settings and produces
power based on configuration resistors without the
need for any serial bus communication. This allows
easy evaluation of the DC/DC converter. To fully explore
the extensive power system management features of the
All registered trademarks and trademarks are the property of their respective owners.
part, download the GUI software LTpowerPlay
®
onto your
PC and use Analog Devices’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, cur-
rent, 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 LTM4678 Quick Start Guide.
Design files for this circuit board are available.
Figure 1. Single-Output 50A LTM4678/DC2570A Demo Circuit

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DEMO MANUAL DC2570A
QUICK START PROCEDURE
Table 1. LTM4678 Demo Boards for Up to 250A Point-of-Load Regulation
MAXIMUM OUTPUT CURRENT NUMBER OF OUTPUTS
NUMBER OF LTM4676 µModule
REGULATORS ON THE BOARD DEMO BOARD NUMBER
25A 2 1 DC2552A
50A 1 1 DC2570A
100A 1 2 DC2638A-A
150A 1 3 DC2638A-B
200A 1 4 DC2638A-C
250A 1 5 DC2638A-D
5. Once the proper output voltage is established, adjust the
load within the operating range and observe the output
voltage regulation, ripple voltage and otherparameters.
6. Connect the dongle and control the output voltages
from the GUI. See LTpowerPlay GUI for the LTM4678
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.
PERFORMANCE SUMMARY
Specifications are at TA= 25°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range 4.5 16 V
Output Voltage, VOUT VIN = 4.5V to 16V, IOUT = 0A to 50A 0.5 1.0 3.3 V
Maximum Output Current, IOUT VIN = 4.5V to 16V, VOUT = 0.5V to 3.3V 50 A
Typical Efficiency VIN = 12V, VOUT = 1.0V, IOUT = 50A 86
(See Figure 5)
%
Default Switching Frequency 500 kHz
Demonstration circuit 2570A is easy to set up to evaluate
the performance of the LTM4678. 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
(4.5V to 16V) and GND (input return).
2. Connect the 1.0V output load between VOUT and GND
(initial load: no load).
3. Connect the DVMs to the input and output. Set default
jumper position: SW1: ON.
4. Turn on the input power supply and check for the
proper output voltages. VOUT should be 1.0V ±0.5%.

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DEMO MANUAL DC2570A
QUICK START PROCEDURE
Figure 2. Proper Measurement Equipment Setup
Figure 3. Measuring Output Voltage Ripple
+ –
V
OUT
GND
COUT
IIN
VIN
4.5V TO 16V
DC2570A F02
+
–IOUT
VOUT
LOAD1
0A-50A
–
+
–+
–+
–+

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DEMO MANUAL DC2570A
QUICK START PROCEDURE
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.
Connecting a PC to DC2570A
You can use a PC to reconfigure the power management
features of the LTM4678 such as:nominal VOUT, margin
Figure 4. Demo Setup with PC
Figure 5. Efficiency vs Load Current at VOUT = 1.0V
INPUT POWER
SUPPLY
USB TO I2C/PMBus
DONGLE DC1613A
LTM4678 DEMO BOARD
DC2570A LOAD
USB CABLE
12-PIN (J1)
CONNECTOR DC2570A F04
VIN
VOUT
VIN = 5V
VIN = 12V
OUTPUT LOAD CURRENT (A)
0
5
10
15
20
25
30
35
40
45
50
70
75
80
85
90
95
EFFICIENCY (%)
DC2570A F05

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DEMO MANUAL DC2570A
QUICK START PROCEDURE
Figure 6. Output Voltage VOUT vs Load Current (VOUT=1.0V)
Figure 7. Output Voltage Ripple at VIN=12V, VOUT=1.0V, IOUT=50A
DC2570A F06
VOUT (20MHz BW) [50mV/DIV]
25A TO 37.5A LOAD STEP
100μs/DIV
DC2570A F07
VOUT (20MHz BW) [5mV/DIV]
2μs/DIV

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DEMO MANUAL DC2570A
QUICK START PROCEDURE
Figure 8. Thermal at VIN=12V, VOUT=1.0V, IOUT=45A, TA=25°C, No Airflow
Figure 9. Thermal at VIN=12V, VOUT=1.0V, IOUT=50A, TA=25°C, 200LFM Airflow

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DEMO MANUAL DC2570A
LTpowerPlay SOFTWARE GUI
LTpowerPlay is a powerful Windows based develop-
ment environment that supports Analog Devices power
system management ICs and μModules, including the
LTM4675, LTM4676, LTM4677, LTM4678, LTC
®
3880,
LTC3882 and LTC3883. 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 the LTM4675,
LTM4676A, LTM4677, LTM4678, LTC3880, LTC3882,
LTC3883’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 Analog
Devices Digital Power Products visit the LTpowerPlay Help
menu. Online help also available through the LTpowerPlay.
Figure 10. LTpowerPlay Main Interface

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DEMO MANUAL DC2570A
LTpowerPlay QUICK START PROCEDURE
The following procedure describes how to use LTpowerPlay
to monitor and change the settings of LTM4678.
1. Download and install the LTpowerPlay GUI:
LTpowerPlay
2. Launch the LTpowerPlay GUI.
a. The GUI should automatically identify the DC2570A.
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 LTM4678
is communicating:
c. In the Toolbar, click the “R” (RAM to PC) icon to
read the RAM from the LTM4678. This reads the
configuration from the RAM of LTM4678 and loads
it into the GUI.
d. If you want to change the output voltage to a differ-
ent 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 reg-
ister values to the LTM4678. 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 what-
ever you want.

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DEMO MANUAL DC2570A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 CIN1 CAP., 150μF, ALUM POLY HYB, 35V, 20% PANASONIC, EEH-ZA1V151P
2 6 COUT1, COUT2, COUT3, COUT6,
COUT7, COUT8
CAP., 100μF, X5R, 6.3V, 20%,1210 AVX, 12106D107MAT2A
3 4 CIN2, CIN3, CIN4, CIN5 CAP., 10μF, X5R, 35V, 10%, 1210 AVX, 1210DD106KAT2A
NIC, NMC1210X5R106K35TRPLPF
4 4 COUT9, COUT10, COUT11, COUT12 CAP., 470μF, TANT. POSCAP, 4V, 20%, 7343, 10mΩ,
TPF, NO SUBS. ALLOWED
PANASONIC, 4TPF470ML
5 2 C14, C28 CAP., 0.01μF, X7R, 25V, 5%, 0603 AVX, 06033C103JAT2A
6 1 C15 CAP., 270pF, X7R, 25V, 5%, 0603 AVX, 06033C271JAT2A
7 2 C21, C24 CAP., 1μF, X5R, 25V, 10%, 0603 AVX, 06033D105KAT2A
NIC, NMC0603X5R105K25TRPF
8 1 C23 CAP., 1μF, X7R, 25V, 10%, 0805 AVX, 08053C105KAT2A
9 1 C26 CAP., 0.1μF, X5R, 16V, 10%, 0603 AVX, 0603YD104KAT2A
NIC, NMC0603X5R104K16TRPF
10 1 C30 CAP., 4.7μF, X5R, 6.3V, 10%, 0603 AVX, 06036D475KAT2A
MURATA, GRM188R60J475KE19D
TDK, C1608X5R0J475K080AB
11 1 C33 CAP., 2.2μF, X5R, 6.3V, 10%, 0603 AVX, 06036D225KAT2A
MURATA, GRM188R60J225KE19D
TAIYO YUDEN, JMK107BJ225KA-T
22 1 Q1 XSTR., MOSFET, N-CH,40V, TO-252 (DPAK) VISHAY, SUD50N04-8M8P-4GE3
23 1 Q19 XSTR., MOSFET, P-CH, 20V, 5.9A, TO-236 (SOT23-3) VISHAY, SI2365EDS-T1-GE3
24 12 R9, R28, R29, R33, R63, R65, R66,
R91, R92, R106, R107, R108
RES., 0Ω, 1/10W, 0603 NIC, NRC06ZOTRF
VISHAY, CRCW06030000Z0EA
25 13 R10, R11, R12, R13, R14, R15, R16,
R18, R19, R24, R52, R77, R95
RES., 10k, 1%, 1/10W, 0603, AEC-Q200 KOA SPEER, RK73H1JTTD1002F
PANASONIC, ERJ3EKF1002V
VISHAY, CRCW060310K0FKEA
26 3 R25, R32, R70 RES., 10Ω, 1%, 1/10W, 0603 NIC, NRC06F10R0TRF
PANASONIC, ERJ3EKF10R0V
ROHM, MCR03EZPFX10R0
VISHAY, CRCW060310R0FKEA
YAGEO, RC0603FR-0710RL
27 1 R27 RES., 22.6k, 1%, 1/10W, 0603 PANASONIC, ERJ3EKF2262V
ROHM, MCR03EZPFX2262
VISHAY, CRCW060322K6FKEA
28 2 R30, R31 RES., 2.43k, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW06032K43FKEA
30 1 R53 RES., 0.01Ω, 1%, 1/2W, 2010, SENSE, AEC-Q200 VISHAY, WSL2010R0100FEA
31 2 R72, R73 RES., 4.99k, 1%, 1/10W, 0603 NIC, NRC06F4991TRF
VISHAY, CRCW06034K99FKEA
32 1 R78 RES.,15.8k,1%, 1/10W, 0603, AEC-Q200 PANASONIC, ERJ3EKF1582V
VISHAY, CRCW060315K8FKEA
33 1 R90 RES., 0.002Ω, 1%, 1/2W, 2010, SENSE, AEC-Q200 VISHAY, WSL20102L000FEA
43 1 TOOL, STENCIL, 700-DC2570A ANALOG DEVICES, 830-DC2570A
44 1 CAP., OPTION, 7343
45 1 LABEL SPEC, DEMO BOARD SERIAL NUMBER BRADY, THT-96-717-10
46 0 PCA ASSY DWG, DC2570A

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DEMO MANUAL DC2570A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Additional Demo Board Circuit Components
4 0 COUT4, COUT5 CAP., 70μF, TANT. POSCAP, 4V, 20%, 7343, 10mΩ, TPF,
NO SUBS. ALLOWED
PANASONIC, 4TPF470ML
29 0 R50 RES., 30Ω, 1%, 1W, 2512, AEC-Q200 VISHAY, CRCW251230R0FKEG
40 0 RES., OPTION, 0603
41 0 DIODE, OPTION, SOD-323
42 0 CAP., OPTION, 0603
38 0 PCA SCHEMATIC, DC2570A
Hardware for Demo Board Only
12 24 E2, E3, E4, E5, E6, E8, E9, E10, E11,
E12, E13, E14, E15, E16, E17, E18, E20,
E21, E22, E23, E24, E25, E26, E27
TEST POINT, TURRET, 0.064", MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0
13 1 J1 CONN., SHROUDED HDR, MALE, 2×6, 2mm,
VERT, STR, THT
FCI, 98414-G06-12ULF
14 2 J2, J4 CONN., RF, BNC, RCPT JACK,5-PIN, STR, THT, 50Ω AMPHENOL RF, 112404
15 8 J7, J8, J9, J10 NUT, HEX, STEEL, ZINC PLATE, 10-32 KEYSTONE, 4705
16 4 J7, J8, J9, J10 STUD, FASTENER, #10-32 PENNENGINEERING, KFH-032-10ET
17 4 J7, J8, J9, J10 WASHER, FLAT, STEEL, ZINC PLATE, OD: 0.436 [11.1] KEYSTONE, 4703
18 4 J7, J8, J9, J10 RING, LUG, CRIMP, #10, NON-INSULATED,
SOLDERLESS TERMINALS
KEYSTONE, 8205
19 1 J11 CONN., HDR, FEMALE, 2×7, 2mm, R/A THT SULLINS CONNECTOR SOLUTIONS,
NPPN072FJFN-RC
20 1 J12 CONN., HDR, MALE, 2×7, 2mm, R/A THT MOLEX, 87760-1416
21 4 MH1, MH2, MH3, MH4 STANDOFF, NYLON, SNAP-ON, 0.50" KEYSTONE, 8833
34 1 SW0 CONN., HDR., MALE, 1×3, 2mm, VERT, STR, THT, 10μ" Au SAMTEC, TMM-103-02-L-S
35 1 SW0 CONN., SHUNT, FEMALE, 2-POS, 2mm SAMTEC, 2SN-BK-G
36 1 U1 IC, DUAL 25A POP PSM MODULE, BGA-144
(16mm × 16mm × 6.16mm)
ANALOG DEVICES, LTM4678EY#PBF
37 1 U2 IC, MEMORY, EEPROM, 2-Kb (256×8), TSSOP-8, 400kHz MICROCHIP, 24LC025-I/ST
MICROCHIP, 24LC025T-I/ST
39 1 PCB, DC2570A MAO BANG, 600-DC2570A

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DEMO MANUAL DC2570A
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D C C B B A A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS AND CAP ARE 0603.
35V
4.5V - 16V
1.0V / 50A
OPT
OPT1210 1210 1210
1210 1210 1210
0.035 VIA TESTPOINTS
OFF
ON
1210 1210 1210 1210
*WHEN VIN <5.75V, SHORT INTVCC to VIN WITH R8=0 *WHEN EXTVCC IS USED, R108=OPEN
Monday, April 09, 2018
VIN
VOUT
VOUT
VIN
VIN1
VIN
VIN1
SYNC SHARE_CLK
ALERTB
SCL SDA
FAULT0
FAULT1
COMPa
COMPa
RUN
VDD33
PGOOD1
PGOOD0
COMPb
COMPb
VOUT
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
H ZhouPRODUCTION2 2-2018
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REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
H ZhouPRODUCTION2 2-2018
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
H ZhouPRODUCTION2 2-2018
__
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
13
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
E13
FAULT0
E4
VIN
COUT1 100uF
R107
0
+
COUT11 470uF 4V
J7
VOUT
R18 10K
R9 0
R106
0
SW0 RUN
1 3 2
E9
SYNC
R10 10K
+
COUT10 470uF 4V
C33
2.2uF
E17
GND_SNS
E26
PGOOD0
R90 0.002
2512
R33
0
COUT7
100uF
R8 OPT
E25
EXTVCC
J10
VIN
U1
LTM4678EY
VOUT0
K7
VOUT0
K8
VOUT0
K9
VOUT0
L11
VOUT1 A10
VOUT1 B7
VOUT1 B8
VOUT1 B9
VOUT0
K10
VOUT0
K11
VOUT0
L7
VOUT0
L12
VOUT1 B10
VOUT1 B11
VOUT1 B12
VOUT1 C7
VOUT0
L8
VOUT0
L9
VOUT0
L10
VOUT0
M7
GND
A3
GND
A4
GND
A5
GND
A6
VOUT1 C8
VOUT1 C9
VOUT1 D7
GND
B1
GND
B3
GND
B4
GND
B5
ASEL F12
VTRIM1_CFG E10
GND
B6
GND
C1
GND
C2
GND
C3
FAULT0 H12 FAULT1 G11
GND
C4
TSNS0B
J8
TSNS0A
J11
ALERT H11
RUN0 G12
VOUT0CFG E11
TSNS1A J10
TSNS1B D8
GND
C5
GND
C6
GND
D2
GND
D3
SDA H10
SCL J12
RUN1 F11
VOUT1CFG E12
WP C11
GND
D4
GND
D6
GND
E5
GND
E6
GND
F5
GND
F6
SYNC K12
GND
L3
GND
L4
SHARE_CLK D11
VDD33 E8
GND
F7
GND
G5
GND
K2 GND
J6
GND
K3
GND
G6
COMP0b
H9
COMP0a
J9
SGND
G9
SGND
G10
COMP1a D10
COMP1b C10
GND
G7
GND
G8
GND
L1
VOSNS0+
M11
VOSNS0-
M12
INTVCC E7
EXTVCC F8
VOSNS1+ A11
GND
H5
GND
J3
GND
J4
GND
H6
SW0
M2
GND
L6
GND
J5
GND
H7
GND
H8
GND
J2
GND
L5
GND
K4
VIN0
G4 VIN0 G3 VIN0 G2 VIN0
G1
GND
M6
SW0
M1
GND
K5
GND
M5
VIN1 E1
VIN1 E2
VIN1 E3
VIN1 E4
VIN0
H4 VIN0 H3 VIN0 H2 VIN0 H1
SVIN
D1
GND
K6
VIN1 F1
VIN1 F2
VIN1 F3
VIN1 F4
SGND
F9
SGND
F10
GND
D5
SW1 A2
SW1 A1
SW0
L2
SW1 B2
VOSNS1- A12
VOUT0
M8
VOUT0
M9
VOUT0
M10
VOUT1 A9
VOUT1 A8
VOUT1 A7
VDD25 D12
PGOOD0 J7 PGOOD1 D9
FSWPH_CFG E9
VTRIM0_CFG C12
IN+
J1
IN-
K1
GND
M3
GND
M4
E16
VDD25
R14 10K
R32 10
COUT8
100uF
C14 10nF
+
COUT5 470uF
C29 OPT
P1
R104 OPT
R30
2.43K
C16 OPT
R29 0
C17 OPT
R16 10K
E8
VDD33
CIN5 22uF
COUT6
100uF
C30 4.7uF
E12
SDA
R24 10K R95 10K
J8
GND
R25
10
CIN3 22uF
+
COUT9 470uF 4V
C32 OPT
R11 10K
C15 270pF
+
COUT4
470uF
R19 10K
R92 0 R91 0
E14
FAULT1
COUT3 100uF
E15
VOUT_SNS
COUT2 100uF
J9
GND
R27 22.6K
E3
INTVCC
+
CIN1 150uF
R15 10K
CIN2 22uF
E10
ALERTB
E27
PGOOD1
R105 OPT
C31 OPT
R13 10K
E11
SCL
+
COUT12 470uF 4V
R12 10K
E6
SHARE_CLK
P3
R28 0
CIN4 22uF
E2
GND
R108
0
R31
2.43K
R26 (OPT)
E5
GND
SYNC SHARE_CLK ALERTB SCL SDA FAULT0 FAULT1 VOUT0_CFG VOUT1_CFG RUN1 VDD25 RUN0 INTVCC
VDD25
VOSNS- VOSNS+
VOSNS+
VOSNS-
EXTVCC

12
Rev. 0
DEMO MANUAL DC2570A
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
2010 OPT
DYNAMIC LOAD CIRCUIT DO NOT EXCEED 5% DUTY CYCLE!
BLEEDER LOADS
2010
VOUT
VOUT
VOUT
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
23
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
R52 10K
E22
GND
R50
Q1
SUD50N03-09P
2
1
3
4
J4
IOSTEP
1
2
3
4
5
E23
SGND
J2
VOUT
1
2
3
4
5
C24 1uF
E20
IOSTEP_CLK
E24
SGND
C21 1uF
R53
0.01
C23 1uF

13
Rev. 0
DEMO MANUAL DC2570A
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
TO DC1613A
ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN
PSM STACKING CONNECTORS:
J12, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC
J11, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416
OPTIONAL CIRCUIT FOR PROGRAMMING WITHOUT VIN
1206
3V3
VIN
3V3 VDD33
VIN
3V3
VDD33
ALERTB SDA SCL
RUN FAULT1 FAULT0
SYNC
SHARE_CLK
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES. APP ENG.
Phone: [phone]
SIZE:
SCHEMATIC NO. AND REVISION:
CUSTOMER NOTICE
THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND
SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.
www.analog.com
SKU NO. IC NO.
ANALOG DEVICES 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 APPLICATIONS ENGINEERING FOR ASSISTANCE.
33
HZ
Haihua Z.
REGULATOR WITH DIGITAL POWER MANAGEMENT DUAL PHASE SINGLE OUTPUT STEP-DOWN uMODULE
DC2570A
DC2570A_REV02
N/A
LTM4678EY
U2
24LC025-I/ST
A0
1
A1
2
A2
3
VSS
4SDA 5
SCL 6
WP 7
VCC 8
C28 10nF
E21
AUXP
R77 10K
R74 OPT
R70 10
J11 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
R67 OPT
R89 OPT
R73 4.99K
E18
RUN
R82 OPT
R72 4.99K
R75 OPT
R65 0
C26
100nF
R83 OPT
R78 15.8k
J1
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
J12DEMO 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
D2 OPT
R61 OPT
R62 OPT
R63 0
Q19
TP0101K
23
1
R66
0
AUXVCC
EEWP
EESDA EESCL

14
Rev. 0
DEMO MANUAL DC2570A
01/19
 ANALOG DEVICES, INC. 2019
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.
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
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