2. Analog Devices
  3. DC2638A-C
DC2638A-C

Analog Devices DC2638A-C User manual

  • Hello! I have analyzed the provided demo manual for the Analog Devices LTM4678 DC2638A-C regulator and I'm ready to answer your questions about it. This document describes a high-efficiency, high-density µModule regulator with digital power management, adjustable output from 0.5V to 3.3V and up to 200A load current. It also includes information about using the LTpowerPlay software for full access to power management features. Ask me anything!
  • What is the input voltage range for the LTM4678 DC2638A-C?
    What is the adjustable output voltage range?
    What is the maximum load current this board can supply?
    How many LTM4678 regulators are on the demo board?
    What software can be used to fully explore its power management features?
1
DEMO MANUAL DC2638A-C
Rev. 0
DESCRIPTION
LTM4678 Dual 25A or Single 50A
µModule Regulator with Digital Power
System Management 4x LTM4678; 200A
Demonstration circuit 2638A-C is a high efficiency, high
density, µModule regulator with 4.5V to 16V input range.
The output voltage is adjustable from 0.5V to 3.3V, and
it can supply 200A maximum load current. The demo
board has four LT M
®
4678 µModule
®
regulators, and the
LTM4678 is a dual 25A or single 50A step-down regula-
tor with PMBus power system management. Please see
LTM4678 data sheet for more detailed information.
DC2638A-C powers up to default settings and produce
power based on configuration resistors without the need
for any serial bus communication. This allows easy evalu-
ation of the DC/DC converter. To fully explore the extensive
power system management features of the part, download
All registered trademarks and trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
BOARD PHOTO
the GUI 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 LTM4678 Quick Start Guide.
Design files for this circuit board are available.
Specifications are at TA = 25°C
Figure1. 4× LTM4678; 200A DC2638A-C Demo Circuit
PARAMETER CONDITIONS VALUE
Input Voltage Range 4.5V to 16V
Output Voltage, VOUT VIN = 4.5V–16V, IOUT = 0A to 200A 0.5V to 3.3V, Default: 1.0V
Maximum Output Current, IOUT VIN = 4.5V–16V, VOUT = 0.5V to 3.3V 200A
Typical Efficiency VIN = 12V, VOUT = 1.0V, IOUT = 200A 86% (See Figure5)
Default Switching Frequency 350kHz
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2
DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
Demonstration circuit 2638A-C is easy to set up to evalu-
ate the performance of the LTM4678EY. 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–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: SW0: ON; SW1: ON.
4. Turn on the input power supply and check for the proper
output voltage. VOUT should be 1.0V±0.5%.
5. Once the proper output voltages are established, ad-
just 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 voltage from
the GUI. See “LTpowerPlay GUI for the LTM4678 Quick
Start Guide” for details.
Note: When measuring the output or input voltage rip-
ple, do not use the long ground lead on the oscilloscope
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.
Connecting a PC to DC2638A-C
You can use a PC to reconfigure the power management
features of the LTM4678 such as: nominal V
OUT
, 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.
Table1. LTM4678 Demo Boards for up to 250A Point-of-Load Regulation
MAXIMUM OUTPUT CURRENT NUMBER OF OUTPUTS
NUMBER OF LTM4678 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
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3
DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
Figure2. Proper Measurement Equipment Setup
Figure3. Measuring Output Voltage Ripple
VOUT
GND
COUT
+
-
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4
DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
USB to I2C/PMBus
Dongle DC1613A
LTM4678 Demo
Board DC2638A-C
Input Power
Supply
USB Cable VIN
12-PIN (J16)
Connector
Load
VOUT
Figure4. Demo Setup with PC
Figure5. Efficiency vs Load Current
EFFICIENCY (%)
OUTPUT LOAD CURRENT (A)
95%
90%
85%
80%
75%
70%
0 120 140100 160 180 200
80604020
12VIN
6VIN
VOUT = 1V
fSW = 350kHz
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5
DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
Figure6. Output Voltage VOUT vs Load Current @ VIN = 12V, VOUT = 1V, fSW = 350kHz
Figure7. Output Voltage Ripple @ VIN = 12V, VOUT = 1V, IOUT = 200A, fSW = 350kHz
100µs/DIV
VOUT
(20MHz BW)
20mV/DIV
100A TO 150A
LOAD STEP
DC2638A-C F06
(20MHz BW)
10mV/DIV
5µs/DIV
DC2638A-C F07
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6
DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
Figure8. Thermal @ VIN = 12V, VOUT = 1.0V, IOUT = 130A,
TA = 25°C, No Airflow
Figure9. Thermal @ VIN = 12V, VOUT = 1.0V, IOUT = 180A,
TA = 25°C, 400LFM Airflow
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7
DEMO MANUAL DC2638A-C
Rev. 0
LTPOWERPLAY SOFTWARE GUI
Figure10. LTpowerPlay Main Interface
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, LTC3880,
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 bringup 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,
LTM4676, 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 ADI Digital
Power Products visit the LTpowerPlay Help menu. Online
help also available through the LTpowerPlay.
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8
DEMO MANUAL DC2638A-C
Rev. 0
LTPOWERPLAY QUICK START PROCEDURE
The following procedure describes how to use LTpow-
erPlay 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 DC2638A-C.
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 com-
municating:
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 0.8V. In the Config tab, type in 0.8 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 0.8V.
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.
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9
DEMO MANUAL DC2638A-C
Rev. 0
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 CAPACITORS ARE 0603.
35V
4.5V - 16V
ADJUSTABLE
4V
4V1210 1210 1210
1210 1210 1210
0.035 VIA
TESTPOINTS
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
OFF
ON
1210 1210 1210 1210
-A
-B
-C
C14
-D
10nF
12nF
18nF
27nF
U1,U2
U1,U2,U3
U1,U2,U3,U4
Module
ASSY
*WHEN VIN <5.75V, SHORT INTVCC to VIN WITH R8=R135=R158=R188=R231=0
*WHEN EXTVCC IS USED, R245=OPEN
U1,U2,U3,U4,U5
Iout
100A
150A
up to
200A
up to
250A
CIN10,
11,12,13
CIN14,
15,16,17
CIN18,
19,20,21
COUT60,
61,64,63
22uF OPT OPT
22uF 22uF
22uF 22uF 22uF
OPT
OPT OPT OPT
COUT72,
73,75,80
COUT84,
87,88,93
COUT58,59,
62,65,66,67
COUT70,71,
74,77,78,79
COUT82,83,
86,89,90,91
OPT OPT OPT OPT OPT OPT
470uF OPT OPT
470uF 470uF
470uF 470uF 470uF
OPT
100uF
100uF
100uF100uF100uF
100uF
OPT OPT
OPT
*
2-21-18
VIN
VOUT
VOUT
VIN
VIN1
VIN
VIN1
SYNC
SHARE_CLK
ALERTB
SCL
SDA
FAULT0
COMPa
COMPa
RUN0
VDD33
PGOOD0
COMPb
COMPb
VOUT
EXTVCC
VOSNS+
VOSNS-
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
H ZHOUPRTODUCTION2 2-21-18
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
H ZHOUPRTODUCTION2 2-21-18
__
REVISION HISTORY
DESCRIPTION DATEAPPROVEDECO REV
H ZHOUPRTODUCTION2 2-21-18
__
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
17
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
17
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
17
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A
J7
VOUT
+
COUT5
OPT
4V
R107
0
COUT1
100uF
E4
VIN
E13
FAULT0
R18
10K
C80
2.2uF
E17
GND_SNS
+
COUT10
470uF
4V
R10
10K
E9
SYNC
SW0
RUN0
1
3
2
R106
0
R9 0
R8 OPT
COUT7
100uF
R33
0
R90 0.005
2010
E26
PGOOD0
COUT8
100uF
R32 10
R14
10K
E16
VDD25
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
E25
EXTVCC
J10
VIN
R30
OPT
R104 OPT
P1
C29
OPT
+
COUT11
470uF
C14
*
C30
4.7uF
COUT6
100uF
CIN5
22uF
E8
VDD33
R16
10K
C17
OPT
R29 OPT
C16
OPT
+
COUT9
470uF
4V
CIN3
22uF R245
0
R25
10
J8
GND
R95
10K
R24
10K
E12
SDA
+
COUT4
470uF
C15
220pF
R11
10K
C32
OPT
R91 0
R92 0
J20
GND
E15
VOUT_SNS
COUT3
100uF
E3
INTVCC
R27 OPT
J9
GND
COUT2
100uF
R15
10K
+
CIN1
150uF
J19
VOUT
R13
10K
C31
OPT
R105 OPT
E10
ALERTB
CIN2
22uF
P2
E6
SHARE_CLK
R12
10K
+
COUT12
OPT
4V
E11
SCL
CIN4
22uF
R28 OPT
E5
GND
R26 787
R31
OPT
E2
GND
SYNC
SHARE_CLK
ALERTB
SCL
SDA
VDD25
INTVCC
VDD25
VOSNS-
VOSNS+
VOSNS+
VOSNS-
EXTVCC
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.
10
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
0.035 VIA
TESTPOINTS
1210 1210 1210 1210
12104V 1210 1210
12104V 1210 1210
OFF
ON
OPTIONAL JUMPER FOR SINGLE OUTPUT CONFIGURATION
2-21-18
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
VOUT1
VIN
VIN VIN2
VIN
VIN2
VOSNS+
VOSNS-
SYNC
VOSNS+
VOSNS-
SHARE_CLK
ALERTB
COMPa
COMP1a
SCL
SDA
FAULT0
RUN0
FAULT1
RUN1
COMPb
VOUT
COMP1b
VOSNS1+
VOSNS1-
EXTVCC
PGOOD1
PGOOD0
COMP1a
COMPa
RUN1 RUN0
PGOOD0
VOSNS+
PGOOD1
VOSNS-
VOSNS1+
VOSNS1-
COMPb COMP1b
VOUT1
VOUT
FAULT0 FAULT1
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
27
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
27
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
27
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A
C37
OPT
SW1
RUN 1
1
3
2
E27
PGOOD1
R128 0
+
COUT54
470uF
4V
R130
OPT
U2
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
R150 0
P7
COUT52
100uF
E1
VOUT1_SNS
J13 VOUT1
C35
OPT
R141 OPT
R144 OPT
E14
FAULT1
R146 0
R131
OPT
R149 0
+
COUT50
470uF
4V
+
COUT51
OPT
COUT47
100uF
P4
R135
OPT
R145
10K
CIN9
22uF
R129 0
CIN7
22uF
R142 OPT
R140 OPT
R126
0.005
2010
C85
4.7uF
COUT53
100uF
R148 0
R127 0
R152 0
R139 1.65K
R137
10K
C81
2.2uF
P3
R153 0
2010
+
COUT57
OPT
R154 0
2010
R133
OPT
R155 0
2010
R156 0
2010
C34
OPT
R136
10K
E7
GND1_SNS
R134
OPT
C38
OPT
+
COUT56
470uF
4V
R147 0
+
COUT48
470uF
4V
C36
OPT
CIN6
22uF
COUT49
100uF
R151 0
R138
10K
J5
GND
R143 OPT
COUT46
100uF
C39
OPT
C33
OPT
COUT55
100uF
CIN8
22uF
RUN1
SHARE_CLK
ALERTB
SCL
SDA
VOSNS1+
VOSNS1-
VOSNS1+
VOSNS1-
SYNC
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.
11
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
1210 1210 1210 1210
0.035 VIA
TESTPOINTS
12104V 1210 1210
1210 4V1210 1210
2-21-18
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
VIN VIN3
VIN
VIN3
VIN
SHARE_CLK
ALERTB
COMPa
COMPa
SCL
SDA
PGOOD0
FAULT0
RUN0
COMPb
COMPb
VOUT
SYNC
EXTVCC
VOSNS+
VOSNS-
VOUT
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
37
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
37
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
37
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A
CIN11
*
R164
0
C43
OPT
R179 0
C41
4.7uF
U3
*
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
+
COUT64
*
COUT58
*R159 OPT
C47
OPT
C46
OPT
P6
+
COUT63
*
4V
+
COUT60
*
4V
P8
R173 0.005
2010
R182 OPT
COUT67
*
CIN10
*
C83
2.2uF
COUT66
*
P9
COUT62
*
C45
OPT
R185
0
CIN12
*
R178 0
R183 OPT
R160 OPT
R177 0
R181 2.43k
COUT59
*
R158 OPT
+
COUT61
*
4V
R184 OPT
C40
OPT
R162
10K
+
COUT69
OPT
4V
P5
CIN13
*
COUT65
*
R166
OPT
+
COUT68
OPT
R174
OPT
VOSNS+
VOSNS-
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.
12
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
1210 1210 1210 1210
0.035 VIA
TESTPOINTS
12104V 1210 1210
1210 4V1210 1210
2-21-18
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
VIN VIN4
VIN
VIN4
VIN
VOUT
SHARE_CLK
ALERTB
COMPa
COMPa
SCL
SDA
PGOOD0
FAULT0
RUN0
COMPb
COMPb
VOUT
SYNC
EXTVCC
VOSNS+
VOSNS-
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
47
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
47
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
47
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A
R198 3.24k
R186
0
+
COUT72
*
4V
P11
+
COUT76
OPT
4V
R197 0
COUT71
*
C53
OPT
+
COUT81
OPT
4V
R187
0
R189 OPT
CIN14
*
R192
OPT
P12
C52
OPT
COUT70
*
CIN16
*
C51
OPT
R191
10K
C48
OPT
R200 OPT
COUT77
*
C49
4.7uF
P10
+
COUT80
*
COUT74
*
R194
OPT
C82
2.2uF
R190 OPT
R195 0
R188 OPT
COUT79
*
R199 OPT
R193 0.005
2010
U4
*
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
CIN17
*
+
COUT73
*
4V
C50
OPT
CIN15
*
R201 OPT
P13
R196 0
+
COUT75
*
COUT78
*
VOSNS+
VOSNS-
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.
13
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
1210 1210 1210 1210
0.035 VIA
TESTPOINTS
12104V 1210 1210
1210 4V1210 1210
2-21-18
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
VIN VIN5
VIN
VIN5
VIN
VOUT
SHARE_CLK
ALERTB
COMPa
COMPa
SCL
SDA
PGOOD0
FAULT0
RUN0
COMPb
COMPb
VOUT
SYNC
EXTVCC
VOSNS+
VOSNS-
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
57
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
57
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
57
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A
R241 4.22k
R235
OPT
+
COUT93
*
4V
P15
COUT82
*
COUT86
*
COUT90
*
+
COUT85
OPT
4V
CIN20
*
R240 0
CIN18
*
C79
OPT
R232 OPT
R234
10K
R229
0
COUT89
*
P14
CIN21
*
+
COUT92
OPT
C76
OPT
C78
OPT
C74
OPT
R243 OPT
R231 OPT
R244 OPT
C84
2.2uF
C75
4.7uF
C77
OPT
P16
CIN19
*
R242 OPT
R233 OPT
P17
R239 0
R236 0.005
2010
U5
*
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
+
COUT88
*
R238 0
R237
OPT
+
COUT84
*
4V
+
COUT87
*
4V
COUT91
*
COUT83
*
R230
0
VOSNS+
VOSNS-
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.
14
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
ON
OFF
PULSE
BIAS
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
OPT
2512 2512
OPT
DYNAMIC LOAD CIRCUIT
BLEEDER LOADS
70Hz, 3% Duty Cycle
INT EXT
1%
1%
0805
IOUT
VOUT
2-21-18
VIN
VOUT VOUT1
VOUT
+5.5V
+5.5V
EXTVCC
VOUT1
VOUT
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
67
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
67
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
67
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A
R102
COUT95
100uF
C64
4.7uF
R113
1.4K
R116
10K
R123 1000K
C70
1uF
U8 LT1803IS5
VOUT 1
V-
2
+IN
3-IN 4
V+
5
C69
1.8nF
R112
100
Q12
SUD50N04-8M8P-4GE3
1
2 3
R202 0
COUT94
R226
10k
R205 82.5
R103
R110
5K
COUT99
C68
1uF
Q11
SUD50N04-8M8P-4GE3
1
2 3
R114 154k R204 3.3
E23
EXT PULSE
E24
GND
JP2
1
2
3
JP1
1
2
3
COUT97
R203
681K
R118
0.01
C65
1uF
R111
20K
J14
1
2
3
4
5
R117
2
U6
LT1129CS8
OUTPUT 1
SENSE/ADJ 2
GND 3
NC 4
SHDN
5
GND
6
GND
7
VIN
8
R228
OPT
C67
0.1uF
COUT98
C66
0.22uF
J15
1
2
3
4
5
R115
20K
COUT96
U7 LTC6992-1
MOD
1
GND
2
SET
3DIV 4
V+ 5
OUT 6
R109
100K
R227
4.7k
R108
0.01
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15
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
J1, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416
J2, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn.
NPPN072FJFN-RC
TO DC1613A
PSM STACKING CONNECTORS:
OPTIONAL CIRCUIT FOR PROGRAMMING
WITHOUT VIN
1206
TO DC2086A
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
FAULT0 FAULT1
ALERTB
PGOOD0 PGOOD1
2-21-18
3V3
VIN
3V3 VDD33
VIN
3V3
3V3 3V3 3V3 3V3 3V3
VDD33
ALERTB SDA SCL
RUN0
RUN1
FAULT1
FAULT0
SYNC
SHARE_CLK
VDD33
FAULT0 FAULT1
ALERTB
PGOOD0 PGOOD1
DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
77
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
77
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A DATE:
SHEET OF
TITLE: SCHEMATIC
APPROVALS
PCB DES.
APP ENG.
Phone: (408)432-1900
www.linear.com
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.
77
HZ
H.Zhou
LTM4678EY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
DC2638A
DC26381A-A/B/C/D_REV02
N/A
R213
4.99K
R85
200
J16
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
R225
200
R214 OPT
E21
RUN1
D4
OPT
R221
OPT
D2 GREEN
R215 0
R209
10
R125
10
R210 10K
R216 OPT
R222 0
E19
RUN0
C71
100nF
D3 RED
C73
10nF
R217
OPT
R218
OPT
R223
4.99K J12 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
Q19
DMP3130L-7
23
1
R86
127
Q20
2N7002K
2 3
1
J17 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
R206
OPT
R219
OPT
R124
200
D9
GREEN
Q4
2N7002K
2 3
1
E29
SGND
R207 OPT
D5
OPT
R224
200
U9
24LC025-I/ST
A0
1
A1
2
A2
3
VSS
4SDA 5
SCL 6
WP 7
VCC 8
J18
AUX3V4 4
SCL 3
GND 2
1
SDA
Q2
SI2365EDS-T1-GE3
23
1
C72
10nF
R211
0
E28
AUXP
Q21
2N7002K
2 3
1
D1
GREEN
E22
SGND
R132
OPT
R220
15.8k
R208 OPT
D10
GREEN
D8
21
R212
OPT
Q3
2N7002K
2 3
1
AUX3V4
AUXVCC
EEWP
EESDA
EESCL
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16
DEMO MANUAL DC2638A-C
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 CIN1 CAP., 150μF, ALUM. ELECT., 35V, 20%, 8mm ×
10.2mm SMD, RADIAL, AEC-Q200
PANASONIC, EEHZA1V151P
2 30 COUT1, COUT2, COUT3, COUT6, COUT7,
COUT8, COUT46, COUT47, COUT49,
COUT52, COUT53, COUT55, COUT58,
COUT59, COUT62, COUT65, COUT66,
COUT67, COUT70, COUT71, COUT74,
COUT77, COUT78, COUT79, COUT94,
COUT95, COUT96, COUT97, COUT98, COUT99
CAP., 100μF, X5R, 6.3V, 20%, 1210 AVX, 12106D107MAT2A
MURATA, GRM32ER60J107ME20L
TDK, C3225X5R0J107M250AC
3 16 CIN2, CIN3, CIN4, CIN5, CIN6, CIN7,
CIN8, CIN9, CIN10, CIN11, CIN12,
CIN13, CIN14, CIN15, CIN16, CIN17
CAP., 22μF, X5R, 25V, 10%, 1210 AVX, 12103D226KAT2A
MURATA, GRM32ER61E226KE15L
TAIYO YUDEN, TMK325BJ226KM-P
TAIYO YUDEN, TMK325BJ226KM-T
4 16 COUT4, COUT9, COUT10, COUT11,
COUT48, COUT50, COUT54, COUT56,
COUT60, COUT61, COUT63, COUT64,
COUT72, COUT73, COUT75, COUT80
CAP., 470μF, TANT. POSCAP, 4V, 20%, 7343,
10mΩ, TPF, NO SUBS. ALLOWED
PANASONIC, 4TPF470ML
5 0 COUT5, COUT12, COUT51, COUT57,
COUT68, COUT69, COUT76, COUT81,
COUT84, COUT85, COUT87, COUT88,
COUT92, COUT93
CAP., OPTION, D3L
6 1 C14 CAP., 0.018μF, X7R, 16V, 10%, 0603 AVX, 0603YC183KAT2A
KEMET, C0603C183K4RACTU
NIC, NMC0603X7R183K16TRPF
7 1 C15 CAP., 220pF, X7R, 16V, 10%, 0603 AVX, 0603YC221KAT2A
KEMET, C0603C221K4RACTU
NIC, NMC0603X7R221K16TRPF
10 6 C30, C41, C49, C64, C75, C85 CAP., 4.7μF, X5R, 25V, 10%, 0603, NO SUBS. ALLOWED MURATA, GRM188R61E475KE11D
11 2 C65, C68 CAP., 1μF, X7R, 25V, 10%, 1206 AVX, 12063C105KAT2A
MURATA, GRM31MR71E105KA01L
TAIYO YUDEN, TMK316B7105KL-T
TDK, C3216X7R1E105K160AA
12 1 C66 CAP., 0.22μF, X5R, 25V, 10%, 0805 AVX, 08053D224KAT2A
TAIYO YUDEN, TMK212BJ224KGHT
VENKEL LTD., C0805X5R250-224KNE
13 1 C67 CAP., 0.1μF, X7R, 25V, 10%, 1206 AVX, 12063C104KAT2A
NIC, NMC1206X7R104K25TRPF
14 1 C69 CAP., 1800pF, X7R, 16V, 10%, 0603 AVX, 0603YC182KAT2A
KEMET, C0603C182K4RACTU
NIC, NMC0603X7R182K16TRPF
15 1 C70 CAP., 1μF, X5R, 25V, 10%, 0805 AVX, 08053D105KAT2A
MURATA, GRM216R61E105KA12D
TDK, CGB4B3X5R1E105K055AB
16 1 C71 CAP., 0.1μF, X7R, 25V, 10%, 0603 AVX, 06033C104KAT2A
KEMET, C0603C104K3RACTU
NIC, NMC0603X7R104K25TRPF
TDK, C1608X7R1E104K080AA
17 2 C72, C73 CAP., 0.01μF, X7R, 25V, 10%, 0603 AVX, 06033C103KAT2A
MURATA, GRM188R71E103KA01D
YAGEO, CC0603KRX7R8BB103
18 5 C80, C81, C82, C83, C84 CAP., 2.2μF, X7R, 25V, 10%, 0603 MURATA, GRM188Z71E225KE43D
19 4 D1, D2, D9, D10 LED, GREEN, WATERCLEAR, 0603 WURTH ELEKTRONIK, 150060GS75000
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17
DEMO MANUAL DC2638A-C
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
20 1 D3 LED, SUPER RED, WATERCLEAR, 0603 WURTH ELEKTRONIK, 150060SS75000
22 1 D8 DIODE, SCHOTTKY RECT., 20V, 0.5A, SOD-882D,
LEADLESS, 2-TERM.
NEXPERIA, PMEG2005AELD, 315
36 1 Q2 XSTR., MOSFET, P-CH, 20V, 5.9A, TO-236 (SOT23-3) VISHAY, SI2365EDS-T1-GE3
37 4 Q3, Q4, Q20, Q21 XSTR., MOSFET, SINGLE N-CH, 60V, 380mA,
SOT23-3, AEC-Q101
ON SEMICONDUCTOR, 2N7002KT1G
38 2 Q11, Q12 XSTR., MOSFET, N-CH, 40V, TO-252 (DPAK) VISHAY, SUD50N04-8M8P-4GE3
39 1 Q19 XSTR., MOSFET, P-CH, 30V, 3.5A, SOT23-3, AEC-Q101 DIODES INC., DMP3130L-7
41 36 R9, R33, R91, R92, R106, R107, R127,
R128, R129, R146, R147, R148, R149,
R150, R151, R152, R164, R177, R178,
R179, R185, R186, R187, R195, R196,
R197, R202, R211, R215, R222, R229,
R230, R238, R239, R240, R245
RES., 0Ω, 1/10W, 0603, AEC-Q200 NIC, NRC06ZOTRF
VISHAY, CRCW06030000Z0EA
42 20 R10,R11,R12,R13,R14,R15,R16,R18,R2
4,R95,R116,R136,R137,R138,R145,R16
2,R191,R210,R226,R234
RES., 10k, 1%, 1/10W, 0603, AEC-Q200 KOA SPEER, RK73H1JTTD1002F
PANASONIC, ERJ3EKF1002V
VISHAY, CRCW060310K0FKEA
43 4 R25, R32, R125, R209 RES., 10Ω, 1%, 1/10W, 0603 NIC, NRC06F10R0TRF
PANASONIC, ERJ3EKF10R0V
ROHM, MCR03EZPFX10R0
VISHAY, CRCW060310R0FKEA
YAGEO, RC0603FR-0710RL
44 1 R26 RES., 787Ω, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F7870TRF
PANASONIC, ERJ3EKF7870V
VISHAY, CRCW0603787RFKEA
45 4 R85, R124, R224, R225 RES., 200Ω, 1%, 1/10W, 0603 NIC, NRC06F2000TRF
VISHAY, CRCW0603200RFKEA
YAGEO, RC0603FR-07200RL
46 1 R86 RES., 127Ω, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1270TRF
PANASONIC, ERJ3EKF1270V
VISHAY, CRCW0603127RFKEA
47 5 R90, R126, R173, R193, R236 RES., 0.005Ω, 1%, 1/2W, 2010, SENSE, AEC-Q200 VISHAY, WSL20105L000FEA
49 2 R108, R118 RES., 0.01Ω, 1%, 1/2W, 2010, SENSE, AEC-Q200 VISHAY, WSL2010R0100FEA
50 1 R109 RES., 100k OHMS, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1003TRF
PANASONIC, ERJ3EKF1003V
VISHAY, CRCW0603100KFKEA
51 1 R110 RES., 5k, 10%, 1/2W, THT 3/8 SQ, 1-TURN, TOP
ADJ., TRIMPOT
52 2 R111, R115 RES., 20k, 1%, 1/10W, 0603 PANASONIC, ERJ3EKF2002V
VISHAY, CRCW060320K0FKEA
YAGEO, RC0603FR-0720KL
53 1 R112 RES., 100Ω, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1000TRF
PANASONIC, ERJ3EKF1000V
VISHAY, CRCW0603100RFKEA
54 1 R113 RES., 1.4k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1401TRF
PANASONIC, ERJ3EKF1401V
VISHAY, CRCW06031K40FKEA
55 1 R114 RES., 154k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1543TRF
PANASONIC, ERJ3EKF1543V
VISHAY, CRCW0603154KFKEA
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18
DEMO MANUAL DC2638A-C
Rev. 0
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
56 1 R117 RES., 2Ω, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW06032R00FKEA
57 1 R123 RES., 1MΩ, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1004TRF
PANASONIC, ERJ3EKF1004V
VISHAY, CRCW06031M00FKEA
58 1 R139 RES., 1.65k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1651TRF
PANASONIC, ERJ3EKF1651V
VISHAY, CRCW06031K65FKEA
59 4 R153, R154, R155, R156 RES., 0Ω, 3/4W, 2010, AEC-Q200 NIC, NRC50ZOTRF
PANASONIC, ERJ12ZY0R00U
VISHAY, CRCW20100000Z0EF
60 1 R181 RES., 2.43k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F2431TRF
PANASONIC, ERJ3EKF2431V
VISHAY, CRCW06032K43FKEA
61 1 R198 RES., 3.24k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F3241TRF
PANASONIC, ERJ3EKF3241V
VISHAY, CRCW06033K24FKEA
62 1 R203 RES., 681k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F6813TRF
PANASONIC, ERJ3EKF6813V
VISHAY, CRCW0603681KFKEA
63 1 R204 RES., 3.3Ω, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW06033R30FKEA
64 1 R205 RES., 82.5Ω, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F82R5TRF
PANASONIC, ERJ3EKF82R5V
VISHAY, CRCW060382R5FKEA
65 2 R213, R223 RES., 4.99k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F4991TRF
PANASONIC, ERJ3EKF4991V
VISHAY, CRCW06034K99FKEA
66 1 R220 RES., 15.8k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1582TRF
PANASONIC, ERJ3EKF1582V
VISHAY, CRCW060315K8FKEA
67 1 R227 RES., 4.7k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F4701TRF
PANASONIC, ERJ3EKF4701V
VISHAY, CRCW06034K70FKEA
68 1 R241 RES., 4.22k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F4221TRF
PANASONIC, ERJ3EKF4221V
VISHAY, CRCW06034K22FKEA
69
70 4 U1, U2, U3, U4 IC, DUAL 25A POP PSM MODULE, BGA-144 ANALOG DEVICES, LTM4678EY#PBF
71 1 U6 IC, 700mA μPOWER LDO WITH SHUTDOWN,
SO-8
ANALOG DEVICES, LT1129CS8#PBF
ANALOG DEVICES, LT1129CS8#TRPBF
72 1 U7 IC, TIMERBLOX: VOLTAGE-CTRL. PWM, TSOT23-6 ANALOG DEVICES, LTC6992CS6-1#PBF
ANALOG DEVICES, LTC6992CS6-
1#TRMPBF
ANALOG DEVICES,
LTC6992CS6-1#TRPBF
73 1 U8 IC, SINGLE R TO R IN/OUT OP AMP, TSOT23-5,
100V/μs, 85MHz
ANALOG DEVICES, LT1803IS5#PBF
ANALOG DEVICES, LT1803IS5#TRMPBF
ANALOG DEVICES, LT1803IS5#TRPBF
74 1 U9 IC, MEMORY, EEPROM, 2Kb (256x8), TSSOP-8, 400kHz MICROCHIP, 24LC025-I/ST
MICROCHIP, 24LC025T-I/ST
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19
DEMO MANUAL DC2638A-C
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.
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Additional Demo Board Circuit Components
1 0 C16, C17, C29, C31, C32, C33, C34,
C35, C36, C37, C38, C39, C40, C43,
C45, C46, C47, C48, C50, C51, C52,
C53, C74, C76, C77, C78, C79
CAP., OPTION, 0603
2 0 CIN18,CIN19,CIN20,CIN21COUT82,COUT83,
COUT86,COUT89,COUT90,COUT91
CAP., OPTION, 1210
3 0 D4, D5 DIODE, OPTION, SOD-323
4 0 R8, R27, R28, R29, R30, R31, R104,
R105, R130, R131, R132, R133, R134,
R135, R140, R141, R142, R143, R144,
R158, R159, R160, R166, R174, R182,
R183, R184, R188, R189, R190, R192,
R194, R199, R200, R201, R206, R207,
R208, R212, R214, R216, R218, R219,
R221, R228, R231, R232, R233, R235,
R237, R242, R243, R244
RES., OPTION, 0603
5 0 R217 RES., OPTION, 1206
6 0 R102, R103 RES., OPTION, 2512
7 0 U5 IC., OPTION, BGA-144
8 0 PCA ASSY DWG, DC2638A
Hardware: For Demo Board Only
1 27 E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11,
E12, E13, E14, E15, E16, E17, E20, E21,
E22, E23, E24, E25, E26, E27, E28, E29
TEST POINT, TURRET, 0.064, MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0
2 2 JP1, JP2 CONN., HDR, MALE, 1×3, 2mm, VERT, STR, THT WURTH ELEKTRONIK, 62000311121
3 8 J5, J7, J8, J9, J10, J13, J19, J20 RING, LUG, CRIMP, #10, NON-INSULATED,
SOLDERLESS TERMINALS
KEYSTONE, 8205
4 16 J5, J7, J8, J9, J10, J13, J19, J20 NUT, HEX, STEEL, ZINC PLATE, 10-32 KEYSTONE, 4705
5 8 J5, J7, J8, J9, J10, J13, J19, J20 WASHER, FLAT, STEEL, ZINC PLATE, OD: 0.436 [11.1] KEYSTONE, 4703
6 8 J5, J7, J8, J9, J10, J13, J19, J20 STUD, FASTENER, #10-32 PENNENGINEERING, KFH-032-10ET
7 1 J12 CONN., HDR, FEMALE, 2×7, 2mm, R/A THT SULLINS CONNECTOR SOLUTIONS,
NPPN072FJFN-RC
8 2 J14, J15 CONN., RF, BNC, RCPT JACK, 5-PIN, STR, THT, 50 OHMS AMPHENOL RF, 112404
9 1 J16 CONN., SHROUDED HDR, MALE, 2×6, 2mm, VERT,
STR, THT
FCI, 98414-G06-12ULF
10 1 J17 CONN., HDR, MALE, 2×7, 2mm, R/A THT MOLEX, 0877601416
MOLEX, 87760-1416
11 1 J18 CONN., SHROUDED HDR, MALE, 1×4, 2mm, VERT,
STR, THT
HIROSE ELECTRIC, DF3A-4P-2DSA
12 1 LB1 LABEL SPEC, DEMO BOARD SERIAL NUMBER BRADY, THT-96-717-10
13 2 SW0, SW1 CONN., HDR., MALE, 1×3, 2mm, VERT, STR, THT,
10μ Au
SAMTEC, TMM-103-02-L-S
14 4 MH1, MH2, MH3, MH4 STANDOFF, NYLON, SNAP-ON, 0.50 WURTH ELEKTRONIK, 702935000
15 2 XJP1, XJP2 CONN., SHUNT, FEMALE, 2-POS, 2mm WURTH ELEKTRONIK, 60800213421
16
17 1 PCB, DC2638A MAO BANG, 600-DC2638A
18 1 TOOL, STENCIL, 700-DC2638A ANALOG DEVICES, 830-DC2638A
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20
DEMO MANUAL DC2638A-C
Rev. 0
ANALOG DEVICES, INC. 2020
11/20
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.
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.
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