1
dc2143abfa
DEMO MANUAL DC2143A-B
Description
LTM4677
Dual 18A or Single 36A µModule Regulator
with Digital Power System Management
3× LTM4677; 108A
Demonstration circuit 2143A-B is a high efficiency, high
density, µModule regulator with 4.5V to 16V input range.
The output voltage is adjustable from 0.5V to 1.8V, and
it can supply 108A maximum load current. The demo
board has three LTM
®
4677 µModule
®
regulators, and the
LTM4677 is a dual 18A or single 36A step-down regulator
with PMBus power system management. Please see the
LTM4677 data sheet for more detailed information
DC2143A-B powers up to default settings and produces
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
the GUI software LTpowerPlay™ onto your PC and use
L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks
and LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
LT C ’s I2C/SMBus/PMBus dongle DC1613A to connect to
the board. LTpowerPlay allows the user to reconfigure the
part on the fly and store the configuration in EEPROM, view
telemetry of voltage, current, temperature and fault status
GUI Download – The software can be downloaded from:
http://www.linear.com/ltpowerplay
For more details and instructions of LTpowerPlay, please
refer to LTpowerPlay GUI for LTM4677 Quick Start Guide
in this document.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2143A-B
Figure 1. 3× LTM4677; 108A DC2143A-B Demo Circuit
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dc2143abfa
DEMO MANUAL DC2143A-B
Quick start proceDure
Demonstration circuit 2143A-B is easy to set up to evalu-
ate the performance of the LTM4677EY. 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 outputs. Set default
switch position: SW1: ON; SW2: ON.
4. Turn on the input power supply and check for the proper
output voltages. VOUT0 should be 1.0V ±1%.
5. Once the proper output voltages are established, ad-
just the loads 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 LTM4677
Quick Start Guide for details.
Note: When measuring the output or input voltage ripple,
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 DC2143A-B
You can use a PC to reconfigure the power management
features of the LTM4677 such as: nominal VOUT, margin
set points, OV/UV limits, temperature fault limits, sequenc-
ing parameters, the fault log, fault responses, GPIOs and
other functionality. The DC1613A dongle may be plugged
when VIN is present.
performance summary
Specifications are at TA = 25°C
PARAMETER CONDITION VALUE
Input Voltage Range 4.5V to 16V
Output Voltage, VOUT0 VIN = 4.5V to 16V, IOUT0 = 0A to 108A 0.5V to 1.8V, Default: 1V
Maximum Output Current, IOUT0 VIN = 4.5V to 16V, VOUT = 0.5V to 1.8V 108A
Typical Efficiency VIN = 12V, VOUT = 1.0V, IOUT = 108A 81.5%
Default Switching Frequency 500kHz
Table 1. LTM4677 Demo Cards for Up to 144A Point-of-Load Regulation
MAXIMUM OUTPUT
CURRENT NUMBER OF OUTPUT VOLTAGES
NUMBER OF LTM4677 µMODULE
REGULATORS ON THE BOARD DEMO BOARD NUMBER
Dual 18A 2 1 DC2066A
72A 1 2 DC2143A-A
108A 1 3 DC2143A-B
144A 1 4 DC2143A-C
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dc2143abfa
DEMO MANUAL DC2143A-B
Quick start proceDure
+–
+–
1mΩ
VOUT0
LOAD (0A~108A)
+–
+– + –VIN
4.5V to 16V
+ –
VOUT GND
COUT
Figure 2. Proper Measurement Equipment Setup
Figure 3. Measuring Output Voltage Ripple
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dc2143abfa
DEMO MANUAL DC2143A-B
Quick start proceDure
USB Cable
USB to I2C/PMBus
Dongle DC1613A
VIN
VOUT0
Input Power
Supply
LTM4677 Demo Board
DC2143A-B Load
12-Pin (J7)
Connector
LOAD CURRENT (A)
60
EFFICIENCY (%)
70
100
65
80
90
75
85
95
4030 50
DC2143AB F05
100 11020100 60 908070
1VOUT
1.8VOUT
VIN = 12V
fSW = 500kHz
DC2143AC F06
VOUT0 (20MHz BW) [20mV/DIV]
54A TO 81A LOAD STEP
t(20µs/DIV) DC2143AC F07
VOUT0 (20MHz BW) [5mV/DIV]
t(20µs/DIV)
Figure 4. Demo Setup with PC
Figure 5. Efficiency vs Load Current for VOUT = 1V
and VOUT = 1.8V at VIN = 12V, fSW = 500kHz
Figure 6. Output Voltage VOUT0 vs Load Current
at VIN = 12V, VOUT0 = 1V, fSW = 500kHz
Figure 7. Output Voltage Ripple at VIN = 12V,
VOUT0 = 1V, IOUT0 = 108A, fSW = 500kHz
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dc2143abfa
DEMO MANUAL DC2143A-B
Quick start proceDure
Figure 8. Thermal Performance at VIN = 12V, VOUT0 = 1V, IOUT0 = 108A, TA = 23.8°C, Air Flow 400LFM
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dc2143abfa
DEMO MANUAL DC2143A-B
LTpowerPlay is a powerful Windows based development
environment that supports Linear Technology power sys-
tem management ICs, including the LTM4677, LTC3880,
LTC3883, LTC2974 and LTC2978. The software supports
a variety of different tasks. You can use LTpowerPlay to
evaluate Linear Technology ICs by connecting to a demo
board system. LTpowerPlay can also be used in an offline
mode (with no hardware present) in order to build a mul-
tichip 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 LTM4677, the
LTC3880 and the LTC3883’s demo system, or a customer
board. The software also provides an automatic update
feature to keep the software current with the latest set
of device drivers and documentation. The LTpowerPlay
software can be downloaded from:
http://www.linear.com/ltpowerplay
To access technical support documents for LTC Digital
Power Products visit Help. View online help on the LT-
powerPlay menu.
LtpowerpLay software Gui
Figure 9. LTpowerPlay Main Interface
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dc2143abfa
DEMO MANUAL DC2143A-B
The following procedure describes how to use LTpowerPlay
to monitor and change the settings of LTM4677.
1. Download and install the LTpowerPlay GUI:
http://www.linear.com/ltpowerplay
2. Launch the LTpowerPlay GUI.
a. The GUI should automatically identify the DC2143A-B.
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 LTM4677
is communicating:
c. In the Toolbar, click the “R” (RAM to PC) icon to read
the RAM from the TM4677. This reads the configura-
tion from the RAM of LTM4677 and loads it into the
GUI.
d. If you want to change the output voltage to a different
value, like 1.5V. In the Config tab, type in 1.5 in the
VOUT_COMMAND box, like this:
Then, click the “W” (PC to RAM) icon to write these
register values to the LTM4677. After finishing this
step, you will see the output voltage will change to
1.5V.
If the write is successful, you will see the following
message:
e. You can save the changes into the NVM. In the tool
bar, click “RAM to NVM” button, as following
f. Save the demo board configuration to a (*.proj) file.
Click the Save icon and save the file. Name it whatever
you want.
LtpowerpLay Quick start proceDure
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dc2143abfa
DEMO MANUAL DC2143A-B
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 14 CIN1, CIN2, CIN4, CIN5, CIN6, CIN7, CIN8, CIN9,
CIN10, CIN11, CIN12, CIN13, CIN14, CIN15
CAP., X5R, 10µF, 35V, 10%,1210 MURATA, GRM32ER6YA106KA12L
2 1 CIN3 CAP., 150µF, 35V, ALUMINUM ELECTR. SUN ELECT., 35CE150AX
3 22 COUT1, COUT2, COUT3, COUT6, COUT7,
COUT9, COUT10, COUT11, COUT12, COUT13,
COUT14, COUT17, COUT18, COUT20,
COUT21, COUT22 COUT23, COUT24, COUT25,
COUT27, COUT29, COUT30
CAP., X5R, 100µF, 6.3V, 20% 1210 MURATA, GRM32ER60J107ME20K
4 8 COUT4, COUT5, COUT8, COUT15, COUT16,
COUT19, COUT26, COUT28,
POSCAP, 470µF, 2.5V, SP-CAP, D3L PANASONIC, EEF-LX0E471E4
5 1 C3 CAP., X7R, 220pF, 16V, 10%, 0603 AVX, 0603YC221KAT2A
6 1 C4 CAP., X7R, 6800pF, 16V, 10%,0603 AVX, 0603YC682KAT2A
7 4 C5, C12, C33, C34 CAP., X5R, 0.01µF, 16V, 10%,0603 AVX, 0603YD103KAT2A
8 1 C32 CAP., X5R, 0.1µF, 16V, 10%,0603 MURATA, GRM188R61C104KA01D
9 1 C64 CAP., X5R, 4.7µF, 25V,10%, 0603 MURATA, GRM188R61E475KE11D
10 2 C65, C68 CAP., X7R, 1µF, 25V,10%, 1206 MURATA, GRM31MR71E105KA01L
11 1 C66 CAP., X5R, 0.22µF, 25V,10%, 0805 AVX, 08053D224KAT2A
12 1 C67 CAP., X7R, 0.1µF, 25V,10%, 1206 AVX, 12063C104KAT2A
13 1 C69 CAP., X7R, 150pF, 25V,10%, 0603 AVX, 06033C151KAT2A
14 1 C70 CAP., X5R, 1µF, 25V,10%, 0805 MURATA, GRM216R61E105KA12D
15 2 D1, D2 SMT Chip LED, GREEN Wurth Elektronik, 150060GS75000
16 1 D3 SMT Chip LED, RED Wurth Elektronik, 150060SS75000
17 1 D8 DIODE SCHOTTKY 20V 500MA SOD882 2-PIN NXP SEMI., PMEG2005AEL,315
18 1 Q2 MOSFET P-CH 20V 0.58A SOT-23 VISHAY, SI2365EDS-T1-GE3
19 2 Q3, Q4 MOSFET N-CH 60V 115MA SOT-23 FAIRCHILD, 2N7002K
20 2 Q11, Q12 MOSFET N-CH 30V 63A TO252 VISHAY, SUD50N04-8M8P-4GE3
21 1 Q19 MOSFET P-CH 30V 3.5A SOT-23 DIODES INC., DMP3130L-7
22 24 R2, R4, R18, R25, R26, R30, R32, R47, R48,
R50, R56, R58, R60, R72, R74, R104, R120,
R121, R122, R131, R135, R143
RES., CHIP, 0, 1%, 0603 VISHAY CRCW06030000Z0EA
23 15 R6, R7, R8, R9, R10, R11, R12, R15, R35,
R36, R39, R64, R78, R116, R130
RES., CHIP, 10k, 1%, 0603 VISHAY CRCW060310K0FKEA
24 1 R14 RES., CHIP, 2k, 1%, 0603 VISHAY CRCW06032K00FKEA
25 4 R16, R41, R125, R129 RES., CHIP, 10, 1%, 0603 VISHAY CRCW060310R0FKEA
26 1 R19 RES., CHIP, 787, 1%, 0603 VISHAY CRCW0603787RFKEA
27 4 R49, R51, R53, R54 RES., CHIP
, 0, 1%, 2010 VISHAY CRCW20100000Z0EF
28 2 R85, R124 RES., CHIP, 200, 1%, 0603 VISHAY CRCW0603200RFKEA
29 1 R86 RES., CHIP, 127, 1%, 0603 VISHAY CRCW0603127RFKEA
30 1 R105 RES., CHIP, 681k, 1%, 0603 VISHAY CRCW0603681KFKEA
31 1 R106 RES., CHIP, 3.3, 1%, 0603 VISHAY CRCW06033R30FKEA
32 1 R107 RES., CHIP, 82.5, 1%, 0603 VISHAY CRCW060382R5FKEA
33 2 R108, R118 RES., CHIP, 0.01, 1%, 2010 VISHAY, WSL2010R0100FEA
34 1 R109 RES., CHIP, 100k, 1%, 0603 VISHAY CRCW0603100KFKEA
35 1 R110 TRIMMING POTENTIOMETER, 5k BOURNS, 3386P-1-502LF
36 2 R111, R115 RES., CHIP, 20k, 1%, 0603 VISHAY CRCW060320K0FKEA
37 1 R112 RES., CHIP, 100, 1%, 0603 VISHAY CRCW0603100RFKEA
38 1 R113 RES., CHIP, 1.4k, 1%, 0603 VISHAY CRCW06031K40FKEA
39 1 R114 RES., CHIP, 154k, 1%, 0603 VISHAY CRCW0603154KFKEA
40 1 R117 RES., CHIP, 2, 1%, 0603 VISHAY CRCW06032R00FKEA
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dc2143abfa
DEMO MANUAL DC2143A-B
parts List
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
41 1 R123 RES., CHIP, 1M, 1%, 0603 VISHAY CRCW06031M00FKEA
42 2 R134, R144 RES., CHIP, 4.99k, 1%, 0603 VISHAY CRCW06034K99FKEA
43 1 R141 RES., CHIP, 15.8k, 1%, 0603 VISHAY CRCW060315K8FKEA
44 3 U1, U2, U3 IC, LTM4677EY LINEAR TECH., LTM4677EY#PBF
45 1 U6 IC., LT1129CS8-5, S8 LINEAR TECH. LT1129CS8-5#PBF
46 1 U7 IC., LTC6992-1, S6-TSOT LINEAR TECH. LTC6992CS6-1#PBF
47 1 U8 IC., LT1803IS5, S5-TSOT LINEAR TECH. LT1803IS5#PBF
48 1 U9 IC., EEPROM 2KBIT 400KHZ 8TSSOP MICROCHIP, 24LC025-I/ST
49 2 R40, R42 RES., CHIP, 1.65k, 1%, 0603 VISHAY CRCW06031K65FKEA
50 2 R65, R66 RES., CHIP, 2.43k, 1%, 0603 VISHAY CRCW06032K43FKEA
Additional Demo Board Circuit Components
1 0 CIN16, CIN17, CIN18, CIN19, CAP., OPTIONAL 1210
2 0 COUT31, COUT32, COUT33, COUT35,
COUT36, COUT37
CAP., OPTIONAL 1210
3 0 COUT34, COUT38 OPTIONAL, D3L
4 0 COUT39, COUT40, COUT41, COUT42, OPTIONAL D3L
5 COUT43, COUT44, COUT45, COUT46
6 0 R80 RES., CHIP,OPTIONAL, 0603
7 0 R79 RES., CHIP, OPTIONAL, 0603
8 0 U4 IC, OPTIONAL
9 0 C1, C2, C6, C8, C9, C10, C11, C13, C14, OPTIONAL 0603
10 C15, C16, C17, C18, C19, C20
11 0 C7 OPTIONAL 0603
12 0 D4, D5 DIODE SOD323 OPTIONAL
13 0 R1, R3, R5, R13, R17, R20, R21, R22, R23,
R24, R27, R28, R29, R31, R33, R34, R37, R38,
R43, R44, R45, R46, R57, R59, R61, R62, R63,
R67, R68, R69, R70, R71, R73, R75, R76, R77,
R81, R82, R83, R84, R119, R126, R127, R128,
R132, R133, R136, R137, R139, R140, R142
RES., OPTIONAL 0603
14 0 R102, R103 RES., OPTIONAL 2512
15 0 R138 RES., OPTIONAL 1206
Hardware: For Demo Board Only
1 23 E2-E19, E21-E25 TESTPOINT, TURRET, .062" MILL-MAX, 2308-2-00-80-00-00-07-0
2 2 JP1, JP2 CONN., HEADER, 1X3, 2mm Wurth Elektronik, 62000311121
3 2 JP1, JP2 SHUNT, 2mm Wurth Elektronik, 60800213421
4 4 J1, J2, J3, J4 STUD, TEST PIN PEM, KFH-032-10
5 8 J1, J2, J3, J4 (x2) NUT, BRASS 10-32 ANY, #10-32M/S
6 4 J1, J2, J3, J4 RING, LUG #10 KEYSTONE, 8205
7 4 J1, J2, J3, J4 WASHER, TIN PLATED BRASS ANY, #10
8 2 J5, J6 JACK, BANANA KEYSTONE, 575-4
9 1 J7 CONN HEADER 12POS 2MM STR DL PCB FCI, 98414-G06-12ULF
10 2 J10, J11 CONN, BNC, 5PINS CONNEX, 112404
11 1 J12 CONN RECEPT 2MM DUAL R/A 14POS (F) SULLINS, NPPN072FJFN-RC
12 1 J13 HEADER, 14POS 2MM R/A GOLD (M) MOLEX, 87760-1416
13 1 J14 HEADER, 4 PINS, SHROUDED HIROSE, DF3A-4P-2DSA
14 2 SW1, SW2 SWITCH, SLIDE DPDT 300MA 6V C&K., JS202011CQN
15 4 (STAND-OFF) STAND-OFF, NYLON 0.50" Tall, SNAP ON WURTH ELEKTRONIK, 702935000
16 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 2143A
17 2 STENCIL (TOP AND BOTTOM) STENCIL DC2143A
10
dc2143abfa
DEMO MANUAL DC2143A-B
schematic DiaGram
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
1210
0.035 VIA
TESTPOINTS
121035V
4.5V - 16V
1210 1210
1210 1210 1210
0805
ON
OFF
RUN0
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE 0603.
ALL CAPACITORS ARE 0603.
1210 1210 1210
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
0805
*
WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R5,R34, R61.
*
1V / 105A
ALERTB
SCL
SDA
RUN0
SYNC
SHARE_CLK
GPIO0B
VIN
VOUT0
VIN
VOUT0
VOSNS0+
SHARE_CLK
ALERTB
COMP0
COMP0
SCL
SDA
VOSNS0-
GPIO0B
RUN0
VOSNS0+
SYNC
REVISION HISTORY
DESCRIPTION DATE
APPROVED
ECO REV
Simon T.PROUCTION2 11-25-15
__
REVISION HISTORY
DESCRIPTION DATE
APPROVED
ECO REV
Simon T.PROUCTION2 11-25-15
__
REVISION HISTORY
DESCRIPTION DATE
APPROVED
ECO REV
Simon T.PROUCTION2 11-25-15
__
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Tuesday, January 19, 2016
16
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Tuesday, January 19, 2016
16
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Tuesday, January 19, 2016
16
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
+
COUT5
470uF
2.5V
R17 OPT
R10
10K
+
COUT45
OPT
2.5V
E7
VDD25
P4
C6
OPT
C1
OPT
P5
U1
LTM4677EY
VOUT0
A1
VOUT0
A2
VOUT0
A3
VOUT0
D1
ISNS0b-
E1
ISNS0b+
F1
ISNS1b- G1
ISNS1b+ H1
VOUT1 J1
VOUT1 J2
VOUT1 J3
VOUT1 K1
VOUT0
B1
VOUT0
B2
VOUT0
B3
VOUT0
D2
ISNS0a-
E2
ISNS0a+
F2
ISNS1a- G2
ISNS1a+ H2
VOUT1 K2
VOUT1 K3
VOUT1 L1
VOUT1 L2
VOUT0
C1
VOUT0
C2
VOUT0
C3
VOUT0
D3
GND
A4
GND
A6
GND
A7
GND
A8
VOUT1 L3
VOUT1 M1
VOUT1 M2
VOUT1 M3
GND
A9
GND
A10
GND
B4
GND
B5
ASEL G4
FSWPHCFG H4
GND
B6
GND
B7
GND
B8
GND
B9
GPIO0 E4
GPIO1 F4
SNUB0
A5
GND
C4
TSNS0b
C5
TSNS0a
D5
ALERT E5
RUN0 F5
VOUT0CFG G5
VTRIM0CFG H5
TSNS1a J5
TSNS1b K5
GND
C6
SNUB1 M5
GND
C7
GND
C8
GND
C9
SDA D6
SCL E6
RUN1 F6
VOUT1CFG G6
VTRIM1CFG H6
VDD25 J6
WP K6
GND
D4
GND
E3
GND
F3
GND
F10
GND
G3
GND
G10
SYNC E7
GND
M9
GND
M10
SHARE_CLK H7
VDD33 J7
GND
G11
GND
G12
GND
L8 GND
L7
GND
L9
GND
H3
COMP0b
D8
COMP0a
E8
SGND
F7
SGND
F8
COMP1a H8
COMP1b J8
GND
H10
GND
J4
GND
M8
VOSNS0+
D9
VOSNS0-
E9
INTVCC F9
INTVCC G9
VOSNS1 H9
VORB1 J9
GND
J10
GND
L4
GND
L5
GND
K4
SW0
B10
DNC
E11
VORB0+
D10
VORB0-
E10
GND
L6
GND
K7
GND
K8
GND
K9
DNC
C10
SW1 L10
GND
M4
VINH0
B12 VINH0
B11 VINH0
A12 VINH0
A11
DNC
K10
VINL
F12
GND
M6
DNC
H11
VINH1 H12
VINH1 J11
VINH1 J12
VINH1 K11
VINH0
E12 VINH0
D12 VINH0
D11 VINH0
C12 VINH0
C11
VINL
F11
GND
M7
VINH1 K12
VINH1 L11
VINH1 L12
VINH1 M11
VINH1 M12
SGND
G7
SGND
G8
GND
D7
P1
C3
220pF
J3
VOUT0
CIN5
10uF
CIN7
10uF
CIN2
10uF
1210
E8
GND0_SNS
R13
OPT
CIN4
10uF
COUT7
100uF
1210
R14
2K
E3
VIN
+
CIN3
150uF
R23
(OPT)
P2
+
COUT46
OPT
2.5V
P3
R26
0
CIN6
10uF
R22 (OPT)
COUT2
100uF
COUT3
100uF
J1
VIN
R20 (OPT)
COUT6
100uF
1210
R16
10
R5 OPT
R9
10K
SW1
1
2
3
4
5
6
R120 0
E2
INTVCC
CIN1
10uF
1210
+
COUT8
470uF
2.5V
R25 0
J4
GND
E5
VDD33
E4
GND R4 0
R18
0
R12
10K
R8
10K
+
COUT4
470uF
2.5V
COUT11
100uF
R6
10K
E6
VOUT0_SNS
R19 787
C5
10nF
C4
6.8nF
J2
GND
R7
10K
R24
(OPT)
COUT10
100uF
R3
OPT
COUT9
100uF
R1
OPT
R21 (OPT)
COUT1
100uF
R15
10K
R11
10K
C2
OPT
R2
0
11
dc2143abfa
DEMO MANUAL DC2143A-B
schematic DiaGram
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
OPTIONAL JUMPER FOR SINGLE
OUTPUT CONFIGURATION
ON
OFF
RUN1
1210
0.035 VIA
TESTPOINTS
1210 1210 1210
1210 1210 1210
0805
0805
1210 1210 1210
OPT
OPT
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
GPIO1B
RUN1
SHARE_CLK
ALERTB
SCL
SDA
GPIO0B
SYNC
VOSNS1
VIN
VOUT0
VIN
VOUT1
VOUT0 VOUT1
VOSNS0+
VOSNS0-
SHARE_CLK
ALERTB
COMP0
COMP1
SCL
SDA
GPIO0B
RUN0
GPIO1B
RUN1
SYNC
RUN0RUN1
GPIO0B GPIO1B
COMP0 COMP1
VOSNS0+ VOSNS1
VOSNS0-
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Wednesday, November 25, 2015
26
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Wednesday, November 25, 2015
26
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Wednesday, November 25, 2015
26
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
P10
COUT14
100uF
SW2
1
2
3
4
5
6
C9
OPT
COUT20
100uF
R47 0
R32 0
R30
0
R42 3.24K
C11
OPT
CIN10
10uF
R50 0
COUT13
100uF
R46
(OPT)
R39
10K
J6
GND
C7
R35
10K
E9
VOUT1_SNS
+
COUT19
470uF
2.5V
R54 0 2010
R45
(OPT)
R27
R38 OPT
R53 0 2010
R28
OPT
R51 0 2010
E10
GND1_SNS
R119 (OPT)
CIN11
10uF
COUT17
100uF
1210
R34 OPT
R31
OPT
P9
COUT22
100uF
C10
OPT
R56 0
P7
R43 (OPT)
J5 VOUT1
+
COUT16
470uF
2.5V
+
COUT44
OPT
2.5V
R40 1.65k
R33 OPT
R41
10
CIN8
10uF
C8
OPT
R29
OPT
C12
10nF
R44 (OPT)
R36
10K
P8
COUT18
100uF
1210
COUT21
100uF
+
COUT15
470uF
2.5V
R49 0 2010
+
COUT43
OPT
2.5V
U2
LTM4677EY
VOUT0
A1
VOUT0
A2
VOUT0
A3
VOUT0
D1
ISNS0b-
E1
ISNS0b+
F1
ISNS1b- G1
ISNS1b+ H1
VOUT1 J1
VOUT1 J2
VOUT1 J3
VOUT1 K1
VOUT0
B1
VOUT0
B2
VOUT0
B3
VOUT0
D2
ISNS0a-
E2
ISNS0a+
F2
ISNS1a- G2
ISNS1a+ H2
VOUT1 K2
VOUT1 K3
VOUT1 L1
VOUT1 L2
VOUT0
C1
VOUT0
C2
VOUT0
C3
VOUT0
D3
GND
A4
GND
A6
GND
A7
GND
A8
VOUT1 L3
VOUT1 M1
VOUT1 M2
VOUT1 M3
GND
A9
GND
A10
GND
B4
GND
B5
ASEL G4
FSWPHCFG H4
GND
B6
GND
B7
GND
B8
GND
B9
GPIO0 E4
GPIO1 F4
SNUB0
A5
GND
C4
TSNS0b
C5
TSNS0a
D5
ALERT E5
RUN0 F5
VOUT0CFG G5
VTRIM0CFG H5
TSNS1a J5
TSNS1b K5
GND
C6
SNUB1 M5
GND
C7
GND
C8
GND
C9
SDA D6
SCL E6
RUN1 F6
VOUT1CFG G6
VTRIM1CFG H6
VDD25 J6
WP K6
GND
D4
GND
E3
GND
F3
GND
F10
GND
G3
GND
G10
SYNC E7
GND
M9
GND
M10
SHARE_CLK H7
VDD33 J7
GND
G11
GND
G12
GND
L8 GND
L7
GND
L9
GND
H3
COMP0b
D8
COMP0a
E8
SGND
F7
SGND
F8
COMP1a H8
COMP1b J8
GND
H10
GND
J4
GND
M8
VOSNS0+
D9
VOSNS0-
E9
INTVCC F9
INTVCC G9
VOSNS1 H9
VORB1 J9
GND
J10
GND
L4
GND
L5
GND
K4
SW0
B10
DNC
E11
VORB0+
D10
VORB0-
E10
GND
L6
GND
K7
GND
K8
GND
K9
DNC
C10
SW1 L10
GND
M4
VINH0
B12 VINH0
B11 VINH0
A12 VINH0
A11
DNC
K10
VINL
F12
GND
M6
DNC
H11
VINH1 H12
VINH1 J11
VINH1 J12
VINH1 K11
VINH0
E12 VINH0
D12 VINH0
D11 VINH0
C12 VINH0
C11
VINL
F11
GND
M7
VINH1 K12
VINH1 L11
VINH1 L12
VINH1 M11
VINH1 M12
SGND
G7
SGND
G8
GND
D7
P6
COUT12
100uF
R37
OPT
R48 0
CIN9
10uF
P11
12
dc2143abfa
DEMO MANUAL DC2143A-B
schematic DiaGram
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
1210
0.035 VIA
TESTPOINTS
1210 1210 1210
1210 1210 1210
0805
0805
1210 1210 1210
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
SHARE_CLK
ALERTB
SCL
SDA
SYNC
GPIO0B
VIN
VOUT0
VIN
VOUT0
VOSNS0+
VOSNS0+
VOSNS0-
SHARE_CLK
ALERTB
COMP0
COMP0
SCL
SDA
GPIO0B
RUN0
SYNC
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Tuesday, January 19, 2016
36
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Tuesday, January 19, 2016
36
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Tuesday, January 19, 2016
36
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
COUT23
100uF
R63 OPT
COUT24
100uF
P18
P15
C15
OPT
R69
(OPT)
CIN15
10uF
R70
(OPT)
U3
LTM4677EY
VOUT0
A1
VOUT0
A2
VOUT0
A3
VOUT0
D1
ISNS0b-
E1
ISNS0b+
F1
ISNS1b- G1
ISNS1b+ H1
VOUT1 J1
VOUT1 J2
VOUT1 J3
VOUT1 K1
VOUT0
B1
VOUT0
B2
VOUT0
B3
VOUT0
D2
ISNS0a-
E2
ISNS0a+
F2
ISNS1a- G2
ISNS1a+ H2
VOUT1 K2
VOUT1 K3
VOUT1 L1
VOUT1 L2
VOUT0
C1
VOUT0
C2
VOUT0
C3
VOUT0
D3
GND
A4
GND
A6
GND
A7
GND
A8
VOUT1 L3
VOUT1 M1
VOUT1 M2
VOUT1 M3
GND
A9
GND
A10
GND
B4
GND
B5
ASEL G4
FSWPHCFG H4
GND
B6
GND
B7
GND
B8
GND
B9
GPIO0 E4
GPIO1 F4
SNUB0
A5
GND
C4
TSNS0b
C5
TSNS0a
D5
ALERT E5
RUN0 F5
VOUT0CFG G5
VTRIM0CFG H5
TSNS1a J5
TSNS1b K5
GND
C6
SNUB1 M5
GND
C7
GND
C8
GND
C9
SDA D6
SCL E6
RUN1 F6
VOUT1CFG G6
VTRIM1CFG H6
VDD25 J6
WP K6
GND
D4
GND
E3
GND
F3
GND
F10
GND
G3
GND
G10
SYNC E7
GND
M9
GND
M10
SHARE_CLK H7
VDD33 J7
GND
G11
GND
G12
GND
L8 GND
L7
GND
L9
GND
H3
COMP0b
D8
COMP0a
E8
SGND
F7
SGND
F8
COMP1a H8
COMP1b J8
GND
H10
GND
J4
GND
M8
VOSNS0+
D9
VOSNS0-
E9
INTVCC F9
INTVCC G9
VOSNS1 H9
VORB1 J9
GND
J10
GND
L4
GND
L5
GND
K4
SW0
B10
DNC
E11
VORB0+
D10
VORB0-
E10
GND
L6
GND
K7
GND
K8
GND
K9
DNC
C10
SW1 L10
GND
M4
VINH0
B12 VINH0
B11 VINH0
A12 VINH0
A11
DNC
K10
VINL
F12
GND
M6
DNC
H11
VINH1 H12
VINH1 J11
VINH1 J12
VINH1 K11
VINH0
E12 VINH0
D12 VINH0
D11 VINH0
C12 VINH0
C11
VINL
F11
GND
M7
VINH1 K12
VINH1 L11
VINH1 L12
VINH1 M11
VINH1 M12
SGND
G7
SGND
G8
GND
D7
R121 0
C16
OPT
CIN14
10uF
R62
OPT
R66 2.43K
COUT27
100uF
R61 OPT
R65 2.43k
P13
R57
OPT
R59
OPT
R58
0
R64
10K
+
COUT41
OPT
2.5V
P16
P12
CIN13
10uF
P17
R60 0
C13
OPT
+
COUT26
470uF
2.5V
R68 (OPT)
R67 (OPT)
+
COUT28
470uF
2.5V
C14
OPT
COUT29
100uF
P14
COUT25
100uF
COUT30
100uF
+
COUT42
OPT
2.5V
CIN12
10uF
13
dc2143abfa
DEMO MANUAL DC2143A-B
schematic DiaGram
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
1210
0.035 VIA
TESTPOINTS
1210 1210 1210
0805
0805
1210 1210 1210
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
SHARE_CLK
ALERTB
SCL
SDA
SYNC
GPIO0B
VIN
VOUT0
VIN
VOUT0
VOSNS0+
VOSNS0+
VOSNS0-
SHARE_CLK
ALERTB
COMP0
COMP0
SCL
SDA
GPIO0B
RUN0
SYNC
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Monday, July 27, 2015
46
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Monday, July 27, 2015
46
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Monday, July 27, 2015
46
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
C19
OPT
R81 OPT
R73
OPT
R75 OPT
+
COUT38
OPT
2.5V
R71
OPT C18
OPT
CIN16
OPT
P25
P21
R82 OPT
P20
R77 OPT
CIN17
OPT
P19
+
COUT39
OPT
2.5V
R76
OPT
P23
R74 0
+
COUT40
OPT
2.5V
R84
OPT
COUT31
OPT
COUT36
OPT
COUT37
OPT
CIN18
OPT
COUT33
OPT
C20
OPT
R79 OPT
R72
0
P24
R78
10K
P22
CIN19
OPT
+
COUT34
OPT
2.5V
R83
OPT
COUT35
OPT
COUT32
OPT
R122 0
U4
OPT
VOUT0
A1
VOUT0
A2
VOUT0
A3
VOUT0
D1
ISNS0b-
E1
ISNS0b+
F1
ISNS1b- G1
ISNS1b+ H1
VOUT1 J1
VOUT1 J2
VOUT1 J3
VOUT1 K1
VOUT0
B1
VOUT0
B2
VOUT0
B3
VOUT0
D2
ISNS0a-
E2
ISNS0a+
F2
ISNS1a- G2
ISNS1a+ H2
VOUT1 K2
VOUT1 K3
VOUT1 L1
VOUT1 L2
VOUT0
C1
VOUT0
C2
VOUT0
C3
VOUT0
D3
GND
A4
GND
A6
GND
A7
GND
A8
VOUT1 L3
VOUT1 M1
VOUT1 M2
VOUT1 M3
GND
A9
GND
A10
GND
B4
GND
B5
ASEL G4
FSWPHCFG H4
GND
B6
GND
B7
GND
B8
GND
B9
GPIO0 E4
GPIO1 F4
SNUB0
A5
GND
C4
TSNS0b
C5
TSNS0a
D5
ALERT E5
RUN0 F5
VOUT0CFG G5
VTRIM0CFG H5
TSNS1a J5
TSNS1b K5
GND
C6
SNUB1 M5
GND
C7
GND
C8
GND
C9
SDA D6
SCL E6
RUN1 F6
VOUT1CFG G6
VTRIM1CFG H6
VDD25 J6
WP K6
GND
D4
GND
E3
GND
F3
GND
F10
GND
G3
GND
G10
SYNC E7
GND
M9
GND
M10
SHARE_CLK H7
VDD33 J7
GND
G11
GND
G12
GND
L8 GND
L7
GND
L9
GND
H3
COMP0b
D8
COMP0a
E8
SGND
F7
SGND
F8
COMP1a H8
COMP1b J8
GND
H10
GND
J4
GND
M8
VOSNS0+
D9
VOSNS0-
E9
INTVCC F9
INTVCC G9
VOSNS1 H9
VORB1 J9
GND
J10
GND
L4
GND
L5
GND
K4
SW0
B10
DNC
E11
VORB0+
D10
VORB0-
E10
GND
L6
GND
K7
GND
K8
GND
K9
DNC
C10
SW1 L10
GND
M4
VINH0
B12 VINH0
B11 VINH0
A12 VINH0
A11
DNC
K10
VINL
F12
GND
M6
DNC
H11
VINH1 H12
VINH1 J11
VINH1 J12
VINH1 K11
VINH0
E12 VINH0
D12 VINH0
D11 VINH0
C12 VINH0
C11
VINL
F11
GND
M7
VINH1 K12
VINH1 L11
VINH1 L12
VINH1 M11
VINH1 M12
SGND
G7
SGND
G8
GND
D7
C17
OPT
R80 OPT
14
dc2143abfa
DEMO MANUAL DC2143A-B
schematic DiaGram
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
GPIO0 GPIO1
ALERTB
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
AUXVCC
EEWP
EESDA
EESCL
AUX3V4
3V3 3V3 3V3
3V3
VIN
3V3 VDD33
VIN
3V3
GPIO0B GPIO1B
ALERTB
VDD33
ALERTB SDA SCL
RUN0
RUN1
GPIO1B
GPIO0B
SYNC
SHARE_CLK
VDD33
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Friday, August 28, 2015
56
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Friday, August 28, 2015
56
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Friday, August 28, 2015
56
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
R136 OPT
D1
GREEN
R129
10
E12
ALERTB
R143 0
R125
10
E15
SHARE_CLK
Q3
2N7002K
2 3
1
R130 10K
R137 OPT
C32
100nF
E11
GPIO1B
C34
10nF
R138
OPT
R144
4.99K
R85
200
E21
RUN1
R139
OPT
D2 GREEN
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
E18
GPIO0B
Q19
DMP3130L-7
23
1
J13 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
E13
SDA
R126
OPT
R140
OPT
D3 RED
J14
AUX3V4 4
SCL 3
GND 2
1
SDA
E19
RUN0
R127 OPT
D5
OPT
U9
24LC025-I/ST
A0
1
A1
2
A2
3
VSS
4SDA 5
SCL 6
WP 7
VCC 8
E14
SCL
E25
AUXP
R86
127
C33
10nF
R131
0
D8
21
R128 OPT
R132
OPT
R141
15.8k
R133
OPT
R124
200
Q4
2N7002K
2 3
1
R134
4.99K
E17
SGND
J7
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
R142
OPT
E16
SYNC
R135 0
Q2
SI2365EDS-T1-GE3
23
1
D4
OPT
E22
SGND
15
dc2143abfa
DEMO MANUAL DC2143A-B
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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
OPT
2512 2512
OPT
DYNAMIC LOAD CIRCUIT
BLEEDER LOADS
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
ON
OFF
70Hz, 3% Duty Cycle
INT EXT
1%
1%
0805
IOUT
TST
VOUT0
PULSE
BIAS
VOUT0 VOUT1
VIN
VOUT0
+5V
+5V
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Wednesday, November 25, 2015
66
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Wednesday, November 25, 2015
66
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY 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 LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE
www.linear.com
1
Wednesday, November 25, 2015
66
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
HZ
JIAN L.
B
LTM4677EY
DEMO CIRCUIT 2143A-B
R110
5K
U8 LT1803IS5
VOUT 1
V-
2
+IN
3-IN 4
V+
5
J11
1
2
3
4
5
C69
150pF
E23
EXT PULSE
R107 82.5
U7 LTC6992-1
MOD
1
GND
2
SET
3DIV 4
V+ 5
OUT 6
R103
U6
LT1129CS8-5
OUTPUT 1
SENSE/ADJ 2
GND 3
NC 4
SHDN
5
GND
6
GND
7
VIN
8
Q11
SUD50N04-8M8P-4GE3
1
2 3
R108
0.01
R114
154k
R118
0.01
C68
1uF
J10
1
2
3
4
5
R115
20K
R109
100K
R111
20K
JP2
1
2
3
R112
100
R104 0
R123 1000K
C70
1uF
R113
1.4K
R105
681K
R116
10K
E24
GND
C65
1uF
Q12
SUD50N04-8M8P-4GE3
1
2 3
JP1
1
2
3
C67
0.1uF
R106 3.3
R102
C64
4.7uF
C66
0.22uF
R117
2
16
dc2143abfa
DEMO MANUAL DC2143A-B
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2016
LT 0616 REV A • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application
engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
