DC2143A-C - Demo Manual

DEMO MANUAL DC2143A-C
LTM4677
Dual 18A or Single 36A µModule Regulator
with Digital Power System Management
4× LTM4677; 144A
Description
Demonstration circuit 2143A-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 1.8V, and
it can supply 144A maximum load current. The demo
board has four LTM®4677 µModule® regulators, and the
LTM4677 is a dual 18A or single 36A step-down regulator with PMBus power system management. Please see
LTM4677 data sheet for more detailed information
DC2143A-C powers up to default settings and produce
power based on configuration resistors without the need
for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive
power system management features of the part, download
the GUI software LTpowerPlay® onto your PC and use
LTC’s I2C/SMBus/PMBus dongle DC1613A to connect to
the board. LTpowerPlay allows the user to reconfigure the
part on the fly and store the configuration in EEPROM, view
telemetry of voltage, current, temperature and fault status
GUI Download – The software can be downloaded from:
http://www.linear.com/ltpowerplay
For more details and instructions of LTpowerPlay, please
refer to LTpowerPlay Software GUI.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2143A-C
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and LTpowerPlay are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
Figure 1. 4× LTM4677; 144A DC2143A-C Demo Circuit
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1
DEMO MANUAL DC2143A-C
Performance Summary
PARAMETER
Specifications are at TA = 25°C
CONDITION
VALUE
Input Voltage Range
4.5V to 16V
Output Voltage, VOUT0
VIN = 4.5V to 16V, IOUT0 = 0A to 144A
0.5V to 1.8V, Default: 1V
Maximum Output Current, IOUT0
VIN = 4.5V to 16V, VOUT = 0.5V to 1.8V
144A
Typical Efficiency
VIN = 12V, VOUT = 1.0V, IOUT = 144A
81.8%
Default Switching Frequency
500kHz
Quick Start Procedure
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
Demonstration circuit 2143A-C is easy to set up to evaluate 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, adjust the loads within the operating range and observe
the output voltage regulation, ripple voltage and other
parameters.
2
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-C
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, sequencing parameters, the fault log, fault responses, GPIOs and
other functionality. The DC1613A dongle may be plugged
when VIN is present.
dc2143acfa
DEMO MANUAL DC2143A-C
Quick Start Procedure
+

V
1mΩ
Load (0~144A)
+
V

Vout0

A
+
++

V

VIN
4.5V‐16V
Figure 2. Proper Measurement Equipment Setup
+
VOUT
COUT
–
GND
Figure 3. Measuring Output Voltage Ripple
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3
DEMO MANUAL DC2143A-C
Quick Start Procedure
Input Power
Supply
USB Cable
VIN
12-Pin (J7)
USB to I2C/PMBus
Dongle DC1613A
Connector
VOUT0
LTM4677 Demo
Board DC2143A-C
Load
Figure 4. Demo Setup with PC
100
VIN = 12V
95
EFFICIENCY (%)
90
85
80
75
70
1VOUT
1.8VOUT
65
60
0
20
60
80 100 120
40
LOAD CURRENT (A)
140
DC2143AC F05
Figure 5. Efficiency vs Load Current at VOUT = 1V
and VOUT = 1.8V, fSW = 500kHz
VOUT0 (20MHz BW) [20mV/DIV]
VOUT0 (20MHz BW) [5mV/DIV]
72A TO 108A LOAD STEP
20µs/DIV
DC2143AC F06
Figure 6. Output Voltage VOUT0 vs Load
Current at VIN = 12V, VOUT0 = 1V
4
2µs/DIV
DC2143AC F07
Figure 7. Output Voltage Ripple at VIN = 12V,
VOUT0 = 1V, IOUT0 = 144A
dc2143acfa
DEMO MANUAL DC2143A-C
Quick Start Procedure
Figure 8. Thermal Performance at VIN = 12V, VOUT0 = 1V, IOUT0 = 144A, TA = 23.8°C, Air Flow 400LFM
dc2143acfa
5
DEMO MANUAL DC2143A-C
LTpowerPlay Software GUI
LTpowerPlay is a powerful Windows based development
environment that supports Linear Technology power system 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 multichip configuration file that can be saved and reloaded at a
later time. LTpowerPlay provides unprecedented diagnostic
and debug features. It becomes a valuable diagnostic tool
during board bring-up to program or tweak the power
management scheme in a system, or to diagnose power
issues when bringing up rails. LTpowerPlay utilizes the
DC1613A USB-to-SMBus controller to communicate with
one of many potential targets, including the 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 LTpowerPlay menu.
Figure 9. LTpowerPlay Main Interface
6
dc2143acfa
DEMO MANUAL DC2143A-C
LTpowerPlay Quick Start Procedure
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-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 LTM4677
is communicating:
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:
c. In the Toolbar, click the “R” (RAM to PC) icon to read
the RAM from the TM4677. This reads the configuration from the RAM of LTM4677 and loads it into the
GUI.
e. You can save the changes into the NVM. In the tool
bar, click “RAM to NVM” button, as following
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:
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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7
DEMO MANUAL DC2143A-C
Parts List
ITEM QTY REFERENCE
Required Circuit Components
1
18 CIN1, CIN2, CIN4, CIN5, CIN6, CIN7, CIN8,
CIN9, CIN10, CIN11, CN12-CN19
2
1
CIN3
3
28 COUT1,COUT2, COUT3, COUT6, COUT7,
COUT9, COUT10, COUT11, COUT12, COUT13,
COUT14, COUT17, COUT18, COUT20,COUT21,
COUT22, COUT23, COUT24, COUT25,
COUT27, COUT29, COUT30, COUT31,
COUT32, COUT33, COUT35, COUT36, COUT37
4
10 COUT4, COUT5, COUT8, COUT15, COUT16,
COUT19, COUT26, COUT28, COUT34, COUT38
5
1
C3
6
1
C4
7
4
C5, C12, C33, C34
8
1
C32
9
1
C64
10
2
C65, C68
11
1
C66
12
1
C67
13
1
C69
14
1
C70
15
2
D1, D2
16
1
D3
17
1
D8
18
1
Q2
19
2
Q3, Q4
20
2
Q11, Q12
21
1
Q19
22
24 R2, R4, R18, R25, R26, R30, R32, R47, R48,
R50, R56, R58, R60, R72, R74, R104, R120,
R121, R122, R131, R135, R143
23
15 R6, R7, R8, R9, R10, R11, R12, R15, R35,
R36, R39, R64, R78, R116, R130
24
1
R14
25
4
R16, R41, R125, R129
26
1
R19
27
4
R49, R51, R53, R54
28
2
R85, R124
29
1
R86
30
1
R105
31
1
R106
32
1
R107
33
2
R108, R118
34
1
R109
35
1
R110
36
2
R111, R115
37
1
R112
38
1
R113
8
PART DESCRIPTION
MANUFACTURER/PART NUMBER
CAP., X5R, 10µF, 35V, 10%,1210
MURATA, GRM32ER6YA106KA12L
CAP., 150µF, 35V, ALUMINUM ELECTR.
CAP., X5R, 100µF, 6.3V, 20% 1210
SUN ELECT., 35CE150AX
MURATA, GRM32ER60J107ME20K
POSCAP, 470µF, 2.5V, SP-CAP, D3L
PANASONIC, EEF-LX0E471E4
CAP., X7R, 220pF, 16V, 10%, 0603
CAP., X7R, 6800pF, 16V, 10%,0603
CAP., X5R, 0.01µF, 16V, 10%,0603
CAP., X5R, 0.1µF, 16V, 10%,0603
CAP., X5R, 4.7µF, 25V,10%, 0603
CAP., X7R, 1µF, 25V,10%, 1206
CAP., X5R, 0.22µF, 25V,10%, 0805
CAP., X7R, 0.1µF, 25V,10%, 1206
CAP., X7R, 150pF, 25V,10%, 0603
CAP., X5R, 1µF, 25V,10%, 0805
SMT CHIP LED, GREEN
SMT CHIP LED, RED
DIODE SCHOTTKY 20V 500MA SOD882 2-PIN
MOSFET P-CH 20V 0.58A SOT-23
MOSFET N-CH 60V 115MA SOT-23
MOSFET N-CH 30V 63A TO252
MOSFET P-CH 30V 3.5A SOT-23
RES., CHIP, 0Ω, 1%, 0603
AVX, 0603YC221KAT2A
AVX, 0603YC682KAT2A
AVX, 0603YD103KAT2A
MURATA, GRM188R61C104KA01D
MURATA, GRM188R61E475KE11D
MURATA, GRM31MR71E105KA01L
AVX, 08053D224KAT2A
AVX, 12063C104KAT2A
AVX, 06033C151KAT2A
MURATA, GRM216R61E105KA12D
WURTH ELEKTRONIK, 150060GS75000
WURTH ELEKTRONIK, 150060SS75000
NXP SEMI., PMEG2005AEL, 315
VISHAY, SI2365EDS-T1-GE3
FAIRCHILD, 2N7002K
VISHAY, SUD50N04-8M8P-4GE3
DIODES INC., DMP3130L-7
VISHAY CRCW06030000Z0EA
RES., CHIP, 10k, 1%, 0603
VISHAY CRCW060310K0FKEA
RES., CHIP, 2k, 1%, 0603
RES., CHIP, 10Ω, 1%, 0603
RES., CHIP, 787Ω, 1%, 0603
RES., CHIP, 0Ω, 1%, 2010
RES., CHIP, 200Ω, 1%, 0603
RES., CHIP, 127Ω, 1%, 0603
RES., CHIP, 681k, 1%, 0603
RES., CHIP, 3.3Ω, 1%, 0603
RES., CHIP, 82.5Ω, 1%, 0603
RES., CHIP, 0.01Ω, 1%, 2010
RES., CHIP, 100k, 1%, 0603
TRIMMING POTENTIOMETER, 5k
RES., CHIP, 20k, 1%, 0603
RES., CHIP, 100Ω, 1%, 0603
RES., CHIP, 1.4k, 1%, 0603
VISHAY CRCW06032K00FKEA
VISHAY CRCW060310R0FKEA
VISHAY CRCW0603787RFKEA
VISHAY CRCW20100000Z0EF
VISHAY CRCW0603200RFKEA
VISHAY CRCW0603127RFKEA
VISHAY CRCW0603681KFKEA
VISHAY CRCW06033R30FKEA
VISHAY CRCW060382R5FKEA
VISHAY, WSL2010R0100FEA
VISHAY CRCW0603100KFKEA
BOURNS, 3386P-1-502LF
VISHAY CRCW060320K0FKEA
VISHAY CRCW0603100RFKEA
VISHAY CRCW06031K40FKEA
dc2143acfa
DEMO MANUAL DC2143A-C
Parts List
ITEM QTY REFERENCE
39
1
R114
40
1
R117
41
1
R123
42
2
R134, R144
43
1
R141
44
2
U1, U2
45
2
U3, U4
46
1
U6
47
1
U7
48
1
U8
49
1
U9
50
2
R40, R42
51
2
R65, R80
52
2
R66, R79
Additional Demo Board Circuit Components
1
0
COUT39, COUT40, COUT41, COUT42,
COUT43, COUT44, COUT45, COUT46
2
0
C1, C2, C6, C8, C9, C10, C11, C13, C14, C15,
C16, C17, C18, C19, C20
3
0
C7
4
0
D4,D 5
5
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
6
0
R102, R103
7
0
R138
Hardware: For Demo Board Only
1
23 E2-E19, E21-E25
2
2
JP1, JP2
3
2
JP1, JP2
4
4
J1, J2, J3, J4
5
8
J1, J2, J3, J4 (x2)
6
4
J1, J2, J3, J4
7
4
J1, J2, J3, J4
8
2
J5, J6
9
1
J7
10
2
J10, J11
11
1
J12
12
1
J13
13
1
J14
14
2
SW1, SW2
15
4
(STAND-OFF)
16
1
17
2
PART DESCRIPTION
RES., CHIP, 154k, 1%, 0603
RES., CHIP, 2Ω, 1%, 0603
RES., CHIP, 1M, 1%, 0603
RES., CHIP, 4.99k, 1%, 0603
RES., CHIP, 15.8k, 1%, 0603
IC, LTM4677EY
IC, LTM4677EY
IC., LT1129CS8-5, S8
IC., LTC6992-1, S6-TSOT
IC., LT1803IS5, S5-TSOT
IC., EEPROM 2KBIT 400kHz 8-TSSOP
RES., CHIP, 1.65k, 1%, 0603
RES., CHIP, 2.43k, 1%, 0603
RES., CHIP, 3.24k, 1%, 0603
MANUFACTURER/PART NUMBER
VISHAY CRCW0603154KFKEA
VISHAY CRCW06032R00FKEA
VISHAY CRCW06031M00FKEA
VISHAY CRCW06034K99FKEA
VISHAY CRCW060315K8FKEA
LINEAR TECH., LTM4677EY#PBF
LINEAR TECH., LTM4677EY#PBF
LINEAR TECH. LT1129CS8-5#PBF
LINEAR TECH. LTC6992CS6-1#PBF
LINEAR TECH. LT1803IS5#PBF
MICROCHIP, 24LC025-I/ST
VISHAY CRCW06031K65FKEA
VISHAY CRCW06032K43FKEA
VISHAY CRCW06033K24FKEA
OPTIONAL D3L
OPTIONAL 0603
OPTIONAL 0603
DIODE SOD323 OPTIONAL
RES., OPTIONAL 0603
RES., OPTIONAL 2512
RES., OPTIONAL 1206
TESTPOINT, TURRET, .062"
CONN., HEADER, 1×3, 2mm
SHUNT, 2mm
STUD, TEST PIN
NUT, BRASS 10-32
RING, LUG #10
WASHER, TIN PLATED BRASS
JACK, BANANA
CONN HEADER 12POS 2MM STR DL PCB
CONN, BNC, 5PINS
CONN RECEPT 2MM DUAL R/A 14POS (F)
HEADER, 14POS 2MM R/A GOLD (M)
HEADER, 4 PINS, SHROUDED
SWITCH, SLIDE DPDT 300MA 6V
STAND-OFF, NYLON 0.50" TALL, SNAP ON
FAB, PRINTED CIRCUIT BOARD
STENCIL (TOP AND BOTTOM)
MILL-MAX, 2308-2-00-80-00-00-07-0
WURTH ELEKTRONIK, 62000311121
WURTH ELEKTRONIK, 60800213421
PEM, KFH-032-10
ANY, #10-32M/S
KEYSTONE, 8205
ANY, #10
KEYSTONE, 575-4
FCI, 98414-G06-12ULF
CONNEX, 112404
SULLINS, NPPN072FJFN-RC
MOLEX, 87760-1416
HIROSE, DF3A-4P-2DSA
C&K., JS202011CQN
WURTH ELEKTRONIK, 702935000
DEMO CIRCUIT 2143A
STENCIL DC2143A
dc2143acfa
9
A
B
C
*
E8
J4
J3
E6
E4
J2
J1
E3
GND0_SNS
GND
VOUT0
1V / 105A
VOUT0_SNS
GND
GND
4.5V - 16V
VIN
VIN
5
CIN2
10uF
1210
R25
0
R18
CIN1
10uF
1210
0
+
+
VOUT0
CIN4
10uF
1210
C3
220pF
CIN5
10uF
1210
COUT9
100uF
1210
VOSNS0-
R4 0
P5
P4
OPT
P3
COUT11
100uF
1210
R17
OPT
0805
R13
COUT10
100uF
1210
CIN7
10uF
1210
VOSNS0+
R14
2K
C4
6.8nF
COMP0
CIN6
10uF
1210
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
E9
D9
E10
D10
D8
E8
C5
D5
F2
F1
E2
E1
A5
B10
F11
F12
A11
A12
B11
B12
C11
C12
D11
D12
E12
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOSNS0-
VOSNS0+
VORB0-
VORB0+
COMP0b
COMP0a
TSNS0b
TSNS0a
ISNS0a+
ISNS0b+
ISNS0aISNS0b-
SNUB0
SW0
VINL
VINL
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
0.035 VIA
TESTPOINTS
4
* WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R5,R34, R61.
1. ALL RESISTORS ARE 0603.
ALL CAPACITORS ARE 0603.
NOTE: UNLESS OTHERWISE SPECIFIED
COUT46
+ COUT8
OPT
470uF
2.5V
2.5V
C6
OPT
CIN3
150uF
35V
VIN
4
H12
J11
J12
K11
K12
L11
L12
M11
M12
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
P1
L10
SW1
R1
0805
OPT
M5
SNUB1
G2
G1
ISNS1aISNS1b-
K5
R2
0
U1
R3
OPT
P2
COMP0
3
LTM4677EY
TSNS1b
H2
H1
ISNS1a+
ISNS1b+
J5
TSNS1a
H8
COMP1a
J8
COMP1b
J9
VORB1
H9
C2
OPT
C1
OPT
0
R26
3
A4
A6
A7
A8
A9
A10
B4
B5
B6
B7
B8
B9
C4
C6
C7
C8
C9
D4
D7
E3
F3
F10
G3
G10
G11
G12
H3
H10
J4
J10
K4
K7
K8
K9
L4
L5
L6
L7
L8
L9
M4
M6
M7
M8
M9
M10
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VOSNS1
VOSNS0+
J1
J2
J3
K1
K2
K3
L1
L2
L3
M1
M2
M3
SYNC
VDD33
INTVCC
INTVCC
SCL
SDA
GPIO0B
E5
E6
D6
E4
H6
G6
H5
G5
H4
G4
J6
F6
F5
K6
RUN0
ALERTB
H7
F4
SHARE_CLK
R24 (OPT)
R23 (OPT)
R22 (OPT)
R21 (OPT)
787
(OPT)
R8
10K
R19
R7
10K
R5
COUT2
100uF
1210
R20
R120 0
R6
10K
COUT1
100uF
1210
SYNC
COUT45
OPT
2.5V
E7
J7
F9
G9
+
2
R9
10K
OPT
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
VOUT0
+
R11
10K
COUT4
470uF
2.5V
R15
10K
SCALE = NONE
HZ
JIAN L.
PCB DES.
APP ENG.
APPROVALS
R10
10K
VIN
COUT3
100uF
1210
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.
CUSTOMER NOTICE
VTRIM1CFG
VOUT1CFG
VTRIM0CFG
VOUT0CFG
FSWPHCFG
ASEL
VDD25
RUN1
RUN0
WP
GPIO1
GPIO0
SDA
SCL
ALERT
SHARE_CLK
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
SGND
SGND
SGND
SGND
G7
G8
F7
F8
DNC
DNC
DNC
DNC
C10
E11
H11
K10
+
RUN0
COUT6
100uF
1210
2
2
GPIO0B
SDA
SCL
ALERTB
LTM4677EY
VDD25
DATE:
1
DEMO CIRCUIT 2143A-C
Monday, November 30, 2015
IC NO.
DATE
www.linear.com
11-25-15
SHEET 1
1
OF 6
REV.
LTC Confidential-For Customer Use Only
Fax: (408)434-0507
E7
VDD33
INTVCC
Simon T
APPROVED
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
C5
10nF
R16
10
SHARE_CLK
SYNC
E5
E2
PROUCTION
TECHNOLOGY
OFF
5
ON
1
DESCRIPTION
REVISION HISTORY
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
SIZE
B
COUT7
100uF
1210
SW1
RUN0
REV
TITLE: SCHEMATIC
R12
10K
COUT5
470uF
2.5V
__
ECO
4
1
10
6
3
D
5
A
B
C
D
DEMO MANUAL DC2143A-C
Schematic Diagram
dc2143acfa
A
B
C
D
5
VOSNS0-
VOSNS0+
+
CIN8
10uF
1210
COUT43
OPT
2.5V
VIN
470uF
2.5V
CIN10
10uF
1210
+ COUT19
VOUT0
C10
OPT
CIN9
10uF
1210
COUT20
100uF
1210
COMP0
CIN11
10uF
1210
COUT21
100uF
1210
C11
OPT
P10
P9
OPT
P8
COUT22
100uF
1210
R38
0805
OPT
R37
R32 0
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
E9
D9
E10
D10
D8
E8
C5
D5
F2
F1
E2
E1
A5
B10
F11
F12
A11
A12
B11
B12
C11
C12
D11
D12
E12
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOSNS0-
VOSNS0+
VORB0-
VORB0+
COMP0b
COMP0a
TSNS0b
TSNS0a
ISNS0a+
ISNS0b+
ISNS0aISNS0b-
SNUB0
SW0
VINL
VINL
0.035 VIA
TESTPOINTS
P6
R29
0805
OPT
R30
0
LTM4677EY
U2
R31
OPT
P7
COMP1
C7
OPT
VOSNS1
R27
OPT
H9
4
H12
J11
J12
K11
K12
L11
L12
M11
M12
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
L10
SW1
M5
SNUB1
G2
G1
ISNS1aISNS1b-
K5
TSNS1b
J5
TSNS1a
H2
H1
ISNS1a+
ISNS1b+
H8
COMP1a
J8
COMP1b
J9
VORB1
3
C8
OPT
4
VOSNS0+
COMP0
RUN1
GPIO0B
R119 (OPT)
0
0
R50
R56
0
0
R48
R47
VOSNS0-
VOSNS1
COMP1
RUN0
GPIO1B
OPTIONAL JUMPER FOR SINGLE
OUTPUT CONFIGURATION
3
VOUT0
A4
A6
A7
A8
A9
A10
B4
B5
B6
B7
B8
B9
C4
C6
C7
C8
C9
D4
D7
E3
F3
F10
G3
G10
G11
G12
H3
H10
J4
J10
K4
K7
K8
K9
L4
L5
L6
L7
L8
L9
M4
M6
M7
M8
M9
M10
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VOSNS1
J1
J2
J3
K1
K2
K3
L1
L2
L3
M1
M2
M3
0 2010
R54
0 2010
2010
0 2010
0
R53
R51
R49
SYNC
VDD33
INTVCC
INTVCC
VTRIM1CFG
VOUT1CFG
VTRIM0CFG
VOUT0CFG
FSWPHCFG
ASEL
VDD25
RUN1
RUN0
WP
GPIO1
GPIO0
SDA
SCL
ALERT
SHARE_CLK
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
SGND
SGND
SGND
SGND
G7
G8
F7
F8
DNC
DNC
DNC
DNC
VOUT1
C10
E11
H11
K10
ALERTB
SCL
SDA
GPIO0B
GPIO1B
E5
E6
D6
E4
F4
H6
G6
H5
G5
H4
G4
J6
F6
F5
ALERTB
R35
10K
2
+
COUT16
470uF
2.5V
OFF
5
ON
SW2
RUN1
GPIO1B
R39
10K
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
R46 (OPT)
R45 (OPT)
R44 (OPT)
R43 (OPT)
1.65K
1.65K
R40
RUN0
GPIO0B
SDA
SCL
VIN
COUT14
COUT15
+
100uF
470uF
1210
2.5V
OPT
SHARE_CLK
SYNC
R34
COUT13
100uF
1210
R42
COUT12
100uF
1210
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.
P11
RUN1
SHARE_CLK
K6
SYNC
E7
H7
J7
C9
OPT
COUT44
OPT
2.5V
F9
G9
+
VOUT1
2
HZ
JIAN L.
SCALE = NONE
APP ENG.
PCB DES.
APPROVALS
RUN1
2
COUT17
100uF
1210
4
1
6
3
5
R28
OPT
DATE:
SIZE
B
GND1_SNS
GND
VOUT1_SNS
LTM4677EY
TECHNOLOGY
E10
J6
E9
VOUT1
www.linear.com
DEMO CIRCUIT 2143A-C
1
Wednesday, November 25, 2015
IC NO.
SHEET 2
1
OF 6
REV.
LTC Confidential-For Customer Use Only
Fax: (408)434-0507
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
TITLE: SCHEMATIC
C12
10nF
R41
10
R36
10K
R33 OPT
COUT18
100uF
1210
J5
1
A
B
C
D
DEMO MANUAL DC2143A-C
Schematic Diagram
11
dc2143acfa
A
B
C
5
VOSNS0-
VOSNS0+
+
VOUT0
CIN13
10uF
1210
COUT42
OPT
2.5V
VIN
470uF
2.5V
CIN12
10uF
1210
COUT27
100uF
1210
C15
OPT
CIN15
10uF
1210
+ COUT28
CIN14
10uF
1210
P14
COUT29
100uF
1210
P17
P16
OPT
COUT30
100uF
1210
R63
C16
OPT
COMP0
OPT 0805
R62
R60 0
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
E9
D9
E10
D10
D8
E8
C5
D5
F2
F1
E2
E1
A5
B10
F11
F12
A11
A12
B11
B12
C11
C12
D11
D12
E12
4
4
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOSNS0-
VOSNS0+
VORB0-
VORB0+
COMP0b
COMP0a
TSNS0b
TSNS0a
ISNS0a+
ISNS0b+
ISNS0aISNS0b-
SNUB0
SW0
VINL
VINL
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
P12
R57
0805
OPT
R58
0
COMP0
LTM4677EY
U3
R59
OPT
3
P13
C13
OPT
H9
0.035 VIA
TESTPOINTS
H12
J11
J12
K11
K12
L11
L12
M11
M12
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
L10
SW1
M5
SNUB1
G2
G1
ISNS1aISNS1b-
K5
TSNS1b
J5
TSNS1a
H2
H1
ISNS1a+
ISNS1b+
H8
COMP1a
J8
COMP1b
J9
VORB1
C14
OPT
3
A4
A6
A7
A8
A9
A10
B4
B5
B6
B7
B8
B9
C4
C6
C7
C8
C9
D4
D7
E3
F3
F10
G3
G10
G11
G12
H3
H10
J4
J10
K4
K7
K8
K9
L4
L5
L6
L7
L8
L9
M4
M6
M7
M8
M9
M10
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VOSNS1
VOSNS0+
J1
J2
J3
K1
K2
K3
L1
L2
L3
M1
M2
M3
SYNC
VDD33
INTVCC
INTVCC
VTRIM1CFG
VOUT1CFG
VTRIM0CFG
VOUT0CFG
FSWPHCFG
ASEL
VDD25
RUN1
RUN0
WP
GPIO1
GPIO0
SDA
SCL
ALERT
SHARE_CLK
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
SGND
SGND
SGND
SGND
G7
G8
F7
F8
DNC
DNC
DNC
DNC
12
ALERTB
SCL
SDA
GPIO0B
E5
E6
D6
E4
P18
ALERTB
R70 (OPT)
R69 (OPT)
R68 (OPT)
R67 (OPT)
2.43K
3.24K
R65
R66
RUN0
GPIO0B
SDA
SCL
2
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
R64
10K
COUT26
470uF
2.5V
+
SCALE = NONE
HZ
JIAN L.
PCB DES.
SIZE
DATE:
B
LTM4677EY
TECHNOLOGY
www.linear.com
1
DEMO CIRCUIT 2143A-C
Friday, August 28, 2015
IC NO.
SHEET 3
1
OF 6
REV.
LTC Confidential-For Customer Use Only
Fax: (408)434-0507
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
1
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
TITLE: SCHEMATIC
COUT41
OPT
2.5V
APPROVALS
+
APP ENG.
VIN
COUT25
100uF
1210
VOUT0
OPT
SHARE_CLK
SYNC
R61
COUT24
100uF
1210
CUSTOMER NOTICE
H6
G6
H5
G5
H4
G4
J6
F6
F5
K6
R121 0
SHARE_CLK
F4
SYNC
E7
P15
H7
J7
F9
G9
COUT23
100uF
1210
2
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.
C10
E11
H11
K10
D
5
A
B
C
D
DEMO MANUAL DC2143A-C
Schematic Diagram
dc2143acfa
A
B
C
5
OPT
2.5V
CIN17
10uF
1210
470uF
2.5V
+ COUT38
VOSNS0-
VOSNS0+
CIN16
10uF
1210
+ COUT39
VOUT0
VIN
COMP0
R74 0
C20
OPT
D10
D8
E8
C5
D5
F2
F1
E2
E1
A5
B10
F11
F12
A11
A12
B11
B12
C11
C12
D11
D12
E12
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
E9
D9
P24 E10
P23
COUT37
100uF
1210
R77
OPT
P21
0805 OPT
R76
COUT36
100uF
1210
CIN19
10uF
1210
COUT35
100uF
1210
C19
OPT
CIN18
10uF
1210
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VINH0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOUT0
VOSNS0-
VOSNS0+
VORB0-
VORB0+
COMP0b
COMP0a
TSNS0b
TSNS0a
ISNS0a+
ISNS0b+
ISNS0aISNS0b-
SNUB0
SW0
VINL
VINL
0.035 VIA
TESTPOINTS
P19
R71
0805
OPT
R72
0
COMP0
R73
OPT
U4
LTM4677EY
P20
C17
OPT
H9
4
H12
J11
J12
K11
K12
L11
L12
M11
M12
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
VINH1
L10
SW1
M5
SNUB1
G2
G1
ISNS1aISNS1b-
H2
H1
ISNS1a+
ISNS1b+
K5
TSNS1b
J5
TSNS1a
H8
COMP1a
J9
VORB1
J8
COMP1b
3
C18
OPT
4
3
A4
A6
A7
A8
A9
A10
B4
B5
B6
B7
B8
B9
C4
C6
C7
C8
C9
D4
D7
E3
F3
F10
G3
G10
G11
G12
H3
H10
J4
J10
K4
K7
K8
K9
L4
L5
L6
L7
L8
L9
M4
M6
M7
M8
M9
M10
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VOSNS1
VOSNS0+
J1
J2
J3
K1
K2
K3
L1
L2
L3
M1
M2
M3
SYNC
VDD33
INTVCC
INTVCC
VTRIM1CFG
VOUT1CFG
VTRIM0CFG
VOUT0CFG
FSWPHCFG
ASEL
VDD25
RUN1
RUN0
WP
GPIO1
GPIO0
SDA
SCL
ALERT
SHARE_CLK
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
VOUT1
SGND
SGND
SGND
SGND
G7
G8
F7
F8
DNC
DNC
DNC
DNC
C10
E11
H11
K10
D
5
ALERTB
SCL
SDA
GPIO0B
E6
D6
E4
OPT
OPT
OPT
R82
R83
R84
2.43K
OPT
R80
R81
3.24K
R79
RUN0
OPT
R78
10K
VIN
COUT33
COUT34
+
100uF
470uF
2.5V
1210
2
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
P25
GPIO0B
SDA
SCL
ALERTB
SHARE_CLK
SYNC
R75
COUT32
100uF
1210
VOUT0
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.
H6
G6
H5
G5
H4
G4
J6
F6
F5
K6
R122 0
SHARE_CLK
F4
SYNC
E7
E5
P22
H7
J7
F9
G9
COUT31
100uF
1210
2
SCALE = NONE
HZ
JIAN L.
PCB DES.
APPROVALS
COUT40
OPT
2.5V
APP ENG.
+
SIZE
DATE:
B
LTM4677EY
TECHNOLOGY
1
DEMO CIRCUIT 2143A-C
Friday, August 28, 2015
IC NO.
SHEET 4
1
OF 6
REV.
LTC Confidential-For Customer Use Only
Fax: (408)434-0507
www.linear.com
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
TITLE: SCHEMATIC
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
1
A
B
C
D
DEMO MANUAL DC2143A-C
Schematic Diagram
13
dc2143acfa
A
B
5
SDA
SCL
WP
VCC
24LC025-I/ST
VSS
A2
A1
A0
U9
TO DC1613A
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN_0
OUTEN_1
GND
AUXSCL
AUXSDA
J7
TO DC2086A
100nF
C32
5
6
7
3V3
EESDA
EESCL
EEWP
8 AUXVCC
1
2
3
4
5
6
7
8
9
10
11
12
3V3
4 AUX3V4
3
2
1
2
Q19
DMP3130L-7
E25
AUXP
VDD33
R134
4.99K
R144
4.99K
ALERTB
VIN
R130 10K
3
R141
15.8k
2
4
VDD33
OPTIONAL CIRCUIT FOR PROGRAMMING
WITHOUT VIN
4
3
2
1
D8
AUX3V4
SCL
GND
SDA
J14
1
E17
1
C
VDD33
SGND
3
SCL
E13
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
SDA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
OPT
R137
E14
VIN
3V3
R142
OPT
E16
R138
OPT
1206
R131
0
SYNC
R139
OPT
R140
OPT
GPIO0B
1
D2
3V3
2N7002K
Q3
GREEN
GPIO0
R124
200
GPIO1B
1
D1
2N7002K
Q4
GREEN
GPIO1
R85
200
3
3V3
ALERTB
J2, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn.
NPPN072FJFN-RC
J1, MALE, CONN
SYNC
SHARE_CLK
E15
SHARE_CLK
R132
OPT
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
OPT
J13 DEMO HEADER (M)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R127
R143 0
R135 0
R136 OPT
1
3V3
D3
D5
OPT
D4
OPT
CUSTOMER NOTICE
C33
10nF
R129
10
R126
OPT
2
R133
OPT
2
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
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.
R86
127
ALERTB
RED
SI2365EDS-T1-GE3
Q2
HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416
SCL
PSM STACKING CONNECTORS:
OPT
J12 DEMO HEADER (F)
SDA
R128
E12
ALERTB
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
3
2
4
3
2
2
14
3
D
5
SCALE = NONE
HZ
JIAN L.
PCB DES.
APP ENG.
APPROVALS
C34
10nF
R125
10
SIZE
DATE:
B
RUN1
RUN0
GPIO0B
LTM4677EY
TECHNOLOGY
SGND
E22
E21
E19
E18
GPIO1B
Fax: (408)434-0507
www.linear.com
1
DEMO CIRCUIT 2143A-C
Friday, August 28, 2015
IC NO.
SHEET 5
1
OF 6
REV.
LTC Confidential-For Customer Use Only
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
TITLE: SCHEMATIC
RUN1
RUN0
GPIO0B
GPIO1B
E11
1
A
B
C
D
DEMO MANUAL DC2143A-C
Schematic Diagram
dc2143acfa
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
A
B
C
5
BLEEDER
R102
2512
OPT
VOUT0
LOADS
R103
2512
OPT
VOUT1
VIN
OFF
ON
R115
20K
4
3
2
2
BIAS
JP1
R114 154k
1
DIV
V+
OUT
LTC6992-1
C65
1uF
8
7
6
5
R109
100K
VIN
GND
NC
OUTPUT
1
2
3
4
R113
1.4K
1%
R112
100
1%
R111
C67
20K
0.1uF
3
2
5
+IN
V-
V+
-IN
VOUT
U8 LT1803IS5
4
1
R106 3.3
3
1
EXT
3
JP2
PULSE
R116
10K
JIAN L.
APP ENG.
2
SCALE = NONE
HZ
PCB DES.
1
R117
2
E23
Q11
R108
0.01
Q12
1
E24
J11
J10
www.linear.com
DATE:
1
DEMO CIRCUIT 2143A-C
Wednesday, November 25, 2015
IC NO.
SHEET 6
1
OF 6
REV.
LTC Confidential-For Customer Use Only
Fax: (408)434-0507
C70
1uF
0805
TST
IOUT
VOUT0
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
GND
LTM4677EY
TECHNOLOGY
R118
0.01
SUD50N04-8M8P-4GE3
1
C66
0.22uF
1
HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN
µModule REGULATOR WITH DIGITAL POWER MANAGEMENT
SIZE
B
1
SUD50N04-8M8P-4GE3
VOUT0
TITLE: SCHEMATIC
EXT PULSE
APPROVALS
C69
INT
150pF
R107 82.5
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
+5V
C64
4.7uF
C68
1uF
+5V
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.
R110
5K
R123 1000K
R105
681K
R104 0
SENSE/ADJ
4
5
6
LT1129CS8-5
GND
GND
SHDN
U6
70Hz, 3% Duty Cycle
SET
GND
MOD
U7
DYNAMIC LOAD CIRCUIT
2
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
2
3
2
3
3
2
4
3
1
2
3
4
5
2
3
4
5
D
5
A
B
C
D
DEMO MANUAL DC2143A-C
Schematic Diagram
dc2143acfa
15
DEMO MANUAL DC2143A-C
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
16 Linear Technology Corporation
dc2143acfa
LT 0616 REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2016
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