DC2283A - Demo Manual

DEMO MANUAL DC2283A
LTC3884EUK
Polyphase Single 160A Output Synchronous Buck
Converter with Power System Management
Description
Demonstration circuit 2283A is a high efficiency, high
density, single-output Buck converter with 7V to 14V input
range. The output voltage is adjustable from 0.5V to 1.5V,
and can supply up to 160A of load current with a 1V output.
The demo board offers the option to be configured as a
dual-output converter, contact factory for details. VOUT0
can supply a 40A maximum load current and VOUT1 can
supply a 120A maximum load current. The demo board
features the LTC3884, a dual output poly phase step-down
controller for ultra-low DCR sensing with digital power
system management. Please see LTC®3884 data sheet
for more detailed information.
DC2283A powers up to default settings and produces power
based on configuration resistors or with its non-volatile
memory 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™
on-to 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 GUI for LTC3884 demo manual.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2283A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Performance Summary
Specifications are at TA = 25°C
PARAMETER
CONDITIONS
Input Voltage Range
VALUE
7V to 14V
Output Voltage, VOUT1
VIN = 7V to 14V, Single Output, IOUT = 0A to 160A(1)
Maximum Output Current, IOUT = IOUT0 + IOUT1
VIN = 7V to 14V, Single Output, VOUT1 = 0.5V to 1.5V(2)
160A
Typical Efficiency
VIN = 12V, Single Output, VOUT1 = 1.0V, 160A Load
89.6%
Peak Efficiency
VIN = 12V, Single Output, VOUT1 = 1.0V, 90A Load
Default Switching Frequency
Default: 1V
90.7%
425kHz
Note 1: Both VOUT0 and VOUT1 terminals need to be used when drawing > 100A output current.
Note 2: For VOUT1 < 0.75V, fSW needs to be reduced due to tON(MIN) limitation.
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1
DEMO MANUAL DC2283A
Quick Start Procedure
Demonstration circuit 2283A is easy to set up to evaluate
the performance of the LTC3884. Refer to Figure 1 for
the proper measurement equipment setup and follow the
procedure below.
1. With power off, connect the input power supply to VIN
(7V – 14V) and GND (input return).
2. Connect the output loads between VOUT0/ VOUT1 and
GND (Initial load: no load). Refer to Figure 1.
3. Connect the DVMs to the input and output.
4. Check the default jumper/switch position: JP1: OFF;
JP4: OFF; JP5: INT; SW1: OFF; SW2: OFF.
5. Turn on the input power supply and adjust voltage to
12V;
NOTE. Make sure that the input voltage does not exceed 14V.
6. Turn on the switches: SW1:ON; SW2:ON;
7. Check for the proper output voltages from VOUT1+ to
VOUT1–.
8. Once the proper output voltage is established, adjust
the loads within the operating range and observe the
output voltage regulation, ripple voltage and other
parameters.
9. Connect the dongle and control the output voltage from
the GUI. See “LTpowerPlay Quick Start Guide” session
for details.
Notes:
1. As stated in the Description section, demonstration
circuit 2283A provides an option to be configured as
a dual-output converter. When the board is set up as a
single-output converter (the default setup), four 0Ω shunt
resistors are populated to short VOUT0 and VOUT1. Please
follow Figure 1 to set up the connection of two loads to
the output terminals to avoid board damage.
–
+
1mΩ
+
–
LOAD0
(40A)
1mΩ
+
+
–
–
VIN
7V TO 14V
LOAD1
(120A)
–
+
1mΩ
+
VOUT
–
DC2447 F01
Figure 1. Proper Measurement Equipment Setup
2
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DEMO MANUAL DC2283A
Quick Start Procedure
2. When measuring the output or input voltage ripple, do
not use the long ground lead on the oscilloscope probe.
See Figure 2 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.
+
VOUT
Connecting a PC to DC2283A
You can use a PC to reconfigure the power management
features of the LTC3884 such as: nominal VOUT, margin
set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses and other
functionality. The DC1613A dongle may be plugged when
VIN is present.
–
COUT
GND
Figure 2. Measuring Output Voltage Ripple
INPUT POWER
SUPPLY
USB CABLE
USB TO I2C/PMBus
DONGLE DC1613A
VIN
12-PIN (J14)
CONNECTOR
LTC3884 DEMO
BOARD DC2283A
VOUT
LOAD
(UP TO 160A)
Figure 3. Demo Setup with PC
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3
DEMO MANUAL DC2283A
Quick Start Procedure
95
EFFICIENCY (%)
90
VOUT1
(20MHz BW)
5mV/DIV
85
80
75
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
OUTPUT LOAD CURRENT (A)
2µs/DIV
DC2283 F05
DC2283 F04
Figure 5. Output Voltage Ripple at VIN = 12V,
VOUT1 = 1V, IOUT = 160A (IOUT0 = 40A, IOUT1 = 120A)
Figure 4. Efficiency vs Load Current at
VIN = 12V, VOUT1 = 1V, fSW = 425kHz
50
0A TO 40A LOAD STEP
LOAD CURRENT PER PHASE (A)
45
200mV/DIV
VOUT1
20m V/DIV
VOUT1 MEASURED AT BNC J11 (20MHz BW)
35
30
25
20
15
PHASE #1
PHASE #2
PHASE #3
PHASE #4
10
5
0
50µs/DIV
DC2283 F06
Figure 6. Transient Response at VIN = 12V,
VOUT1 = 1V
40
0
20
40
80
120
60
100
TOTAL LOAD CURRENT (A)
140
160
DC2283 F07
Figure 7. Current Sharing vs Load Current
at VIN = 12V, VOUT1 = 1V, fSW = 425kHz
Figure 8. Thermal Performance at VIN = 12V, VOUT1 = 1V,
IOUT = 160A, TA = 23°C, No Airflow
4
dc2283af
DEMO MANUAL DC2283A
LTpowerPlay Software Gui
LTpowerPlay is a powerful Windows based development environment that supports Linear Technology
power system management ICs, including the LTM4676,
LTC3880, LTC3883, LTC3884, 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 LTM4676, the LTC3880, LTC3884
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://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
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5
DEMO MANUAL DC2283A
LTpowerPlay Quick Start Procedure
The following procedure describes how to use LTpowerPlay
to monitor and change the settings of LTC3884.
1. Download and install the LTpowerPlay GUI:
http://linear.com/ltpowerplay
2. Launch the LTpowerPlay GUI.
a. The GUI should automatically identify the DC2283A.
The system tree on the left hand side should look
like this:
c. In the Toolbar, click the “R” (RAM to PC) icon to
read the RAM from the LTC3884. This reads the
configuration from the RAM of LTC3884 and loads
it into the GUI.
d. If you want to change the output voltage to a different
value, like 1.2V. In the Config tab, type in 1.2 in the
VOUT_COMMAND box, like this:
b. A green message box shows for a few seconds in
the lower left hand corner, confirming that LTC3884
is communicating:
6
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DEMO MANUAL DC2283A
LTpowerPlay Quick Start Procedure
Then, click the “W” (PC to RAM) icon to write these
register values to the LTC3884. After finishing this
step, you will see the output voltage will change to
1.2V.
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 with a user
filename.
Parts List
ITEM QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
Required Circuit Components
1
16
CIN1, CIN2, CIN3, CIN4, CIN5, CIN6, CIN7, CIN8,
CIN9, CIN10, CIN11, CIN12, CIN13, CIN14, CIN15,
CIN16
CAP, 1210 22µF 10% 25V X7R
MURATA, GRM32ER71E226KE15L
2
16
COUT1, COUT2, COUT5, COUT6, COUT10, COUT11,
COUT12, COUT16, COUT19, COUT20, COUT24,
COUT25, COUT27, COUT28, C34, C35
CAP, 1210 100µF 20% 6.3V X5R
TDK, C3225X5R0J107M
3
12
COUT3, COUT4, COUT7, COUT8, COUT9, COUT13,
COUT14, COUT15, COUT17, COUT18, COUT22,
COUT23
CAP, 7343 470µF 20% 2.5V
PANASONIC, ETPF470M5H
4
6
C7, COUT21, COUT26, C36, C41, C42
CAP, 0603 1µF 20% 25V X5R
AVX, 06033D105MAT2A
5
2
C1, C47
CAP, 0603 2.2µF 20% 6.3V X5R
TDK, C1608X5R0J225M
6
2
C2, C32
CAP, 270µF 20% 16V OSCON
PANASONIC, 16SVPG270M
7
2
C3, C23
CAP, 0805 2.2µF 10% 16V X5R
TDK, C2012X5R1C225K125AC
8
4
C4, C6, C24, C29
CAP, 0603 4.7µF 10% 10V X5R
AVX, 0603ZD475KAT2A
9
4
C8, C15, C37, C46
CAP, 0603 0.1µF 10% 25V X7R
AVX, 06033C104KAT2A
10
4
C9, C16, C21, C33
CAP, 0603 220nF 10% 25V X7R
TDK, C1608X7R1E224K080AC
11
2
C10, C40
CAP, 0603 150pF 5% 50V NP0
AVX, 06035A151JAT2A
12
1
C11
CAP, 0603 3.3nF 5% 50V C0G
MURATA, GRM1885C1H332JA01D
13
6
C14, C17, C18, C27, C28, C38
CAP, 0603 10nF 10% 25V X7R
AVX, 06033C103KAT2A
14
1
C20
CAP, 0603 47pF 5% 50V NP0
AVX, 06035A470JAT2A
15
2
C30, C44
CAP, 1210 100µF 20% 10V X5R
MURATA, GRM32ER61A107ME20L
16
1
C31
CAP, 1210 10µF 10% 16V X7R
MURATA, GRM32DR71C106KA01L
dc2283af
7
DEMO MANUAL DC2283A
Parts List
ITEM QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
17
2
C39, C50
CAP, 0603 100nF 20% 16V X7R
AVX, 0603YC104MAT2A
18
1
C43
CAP, 0603 220pF 10% 50V X7R
AVX, 06035C221KAT2A
19
1
C49
CAP, 0603 47nF 10% 25V X7R
AVX, 06033C473KAT2A
20
2
R1, R129
RES, 2010 0.002Ω 1% 1W
VISHAY, WSL20102L000FEA
21
2
R2, R60
RES, 0603 1Ω 1% 1/10W
VISHAY, CRCW06031R00FKEA
22
25
R3, R4, R15, R19, R39, R40, R42, R43, R45, R46,
R53, R91, R109, R113, R114, R116, R117, R127,
R132, R137, R140, R147, R148, R149, R156
RES, 0603 0Ω JUMPER
VISHAY, CRCW06030000Z0EA
23
14
R6, R7, R8, R10, R29, R30, R33, R34, R49, R50, R98, RES, 0603 10kΩ 5% 1/10W
R123, R124, R131
VISHAY, CRCW060310K0JNEA
24
4
R9, R11, R12, R13
RES, 0603 2kΩ 5% 1/10W
VISHAY, CRCW06032K00JNEA
25
4
R14, R20, R135, R143
RES, 0603 715Ω 1% 1/10W
VISHAY, CRCW0603715RFKEA
26
2
R18, R21
RES, 0603 10Ω 1% 1/10W
VISHAY, CRCW060310R0FKEA
27
2
R22, R108
RES, 0603 30.1kΩ 1% 1/10W
VISHAY, CRCW060330K1FKEA
28
1
R23
RES, 0603 1.96kΩ 1% 1/10W
VISHAY, CRCW06031K96FKEA
29
6
R41, R44, R47, R48, R88, R90
RES, 2010 0Ω JUMPER
VISHAY, CRCW20100000Z0EF
30
2
R69, R70
RES, 0603 10Ω 5% 1/10W
VISHAY, CRCW060310R0JNEA
31
4
R79, R80, R125, R130
RES, 0603 200Ω 5% 1/10W
VISHAY, CRCW0603200RJNEA
32
1
R81
RES, 0603 127Ω 1% 1/10W
VISHAY, CRCW0603127RFKEA
33
1
R89
RES, 0603 2Ω 5% 1/10W
VISHAY, CRCW06032R00JNEA
34
1
R92
RES, 0603 3.3Ω 1% 1/10W
VISHAY, CRCW06033R30FKEA
35
1
R93
RES, 0603 154kΩ 1% 1/10W
VISHAY, CRCW0603154KFKEA
36
1
R94
RES, 0603 1MΩ 5% 1/10W
VISHAY, CRCW06031M00JNEA
37
3
R95, R96, R107
RES, 0603 20kΩ 5% 1/10W
VISHAY, CRCW060320K0JNEA
38
1
R97
RES, 0603 681kΩ 1% 1/10W
VISHAY, CRCW0603681KFKEA
39
1
R99
RES, 0603 301Ω 1% 1/10W
VISHAY, CRCW0603301RFKEA
40
1
R100
RES, 0603 82.5Ω 5% 1/10W
VISHAY, CRCW060382R5FKEA
41
1
R102
RES, 2512 0.01Ω 1% 1W
VISHAY, WSL2512R0100FEA
42
1
R103
RES, VARIABLE 5k
BOURNS, 3386P-1-502-LF
43
1
R104
RES, 0603 1kΩ 1% 1/10W
VISHAY, CRCW06031K00FKEA
44
1
R105
RES, 0603 118kΩ 1% 1/10W
VISHAY, CRCW0603118KFKEA
45
1
R106
RES, 0603 80.6kΩ 1% 1/10W
VISHAY, CRCW060380K6FKEA
46
2
R128, R150
RES, 0603 4.99kΩ 1% 1/10W
VISHAY, CRCW06034K99FKEA
47
2
R144, R155
RES, 0603 15.8kΩ 1% 1/10W
VISHAY, CRCW060315K8FKEA
48
1
R153
RES, 0603 3.57kΩ 1% 1/10W
VISHAY, CRCW06033K57FKEA
49
4
D1, D2, D3, D4
DIODE, SCHOTTKY 30V, 100mA
CENTRAL SEMI, CMDSH-3 TR
50
4
D5, D6, D8, D9
LED, 0603 GREEN
WURTH ELEKTRONIK, 150060GS75000
51
1
D7
LED, 0603 RED
WURTH ELEKTRONIK, 150060SS75000
52
2
D12, D13
DIODE, ULTRA LOW SCHOTTKY
RECTIFIER
NXP SEMI., PMEG2005AEL, 315
53
4
L1, L2, L3, L4
IND, 0.25µH
WURTH ELEKTRONIK, 744301025
54
1
L5
IND, 68µH
SUMIDA, CDRH105RNP-680NC
8
dc2283af
DEMO MANUAL DC2283A
Parts List
ITEM QTY REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
55
8
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8
XSTR, DUAL CHANNEL OptiMOS
MOSFET
INFINEON, BSG0811ND
56
4
Q9, Q10, Q11, Q28
XSTR, PNP GENERAL PURPOSE
DIODES INC., MMST3906-7-F
57
3
Q20, Q29, Q30
XSTR, P-CHANNEL DMOS FET
DIODES INC., DMP3130L-7
58
4
Q21, Q22, Q25, Q26
XSTR, N-CHANNEL DMOS FET
FAIRCHILD, 2N7002
59
2
Q23, Q24
XSTR, MOSFET, N-CHANNEL 40V
VISHAY, SUD50N04-8M8P-4GE3
60
1
U1
IC, LTC3884
LINEAR TECH., LTC3884IUK#10EE-1PBF-ES
61
1
U2
IC, LTC3884
LINEAR TECH., LTC3884IUK#10EF-1PBF-ES
62
1
U4
IC, SYNCHRONOUS STEP-DOWN
CONVERTER
LINEAR TECH., LTC3630EMSE#PBF
63
1
U5
IC, LTC6992IS6-1
LINEAR TECH., LTC6992IS6-1#PBF
64
1
U6
IC, SINGLE OP AMP
LINEAR TECH., LT1803IS5#PBF
65
1
U7
IC, 2k EEPROM
MICROCHIP, 24LC024-I/ST
Additional Demo Board Circuit Components
1
0
CIN17, CIN18, CIN19, CIN20, CIN21, CIN22, CIN23,
CIN24
CAP, 1210 OPTION
OPTION
2
0
C5, C12, C13, C45, C48
CAP, 0603 OPTION
OPTION
3
0
C19 (OPTION)
CAP, 0603 1500pF 5% 50V C0G
MURATA, GRM1885C1H152JA01D
4
0
R5, R16, R17, R24, R25, R26, R27, R28, R31, R32,
R35, R36, R37, R38, R51, R56, R57, R59, R82, R83,
R84, R87, R110, R111, R112, R115, R118, R119,
R120, R121, R122, R126, R133, R134, R136, R138,
R139, R141, R142, R145, R146, R151, R152, R154
RES, 0603 OPTION
OPTION
5
0
R85, R86, R101
RES, 2512 OPTION
OPTION
6
0
D10, D11
DIODE, SCHOTTKY 30V, 100mA
OPTION
CENTRAL SEMI, CMDSH-3-TR OPTION
7
0
Q12, Q13, Q14, Q15, Q16, Q17, Q18, Q27
XSTR, POWER MOSFET OPTION
OPTION
Hardware: For Demo Board Only
1
24
E1, E2, E3, E4, E5, E6, E7, E8, E9, E13, E14, E21, E22, TEST POINT, TURRET, .094" MTG.
E23, E24, E25, E26, E27, E28, E34, E35, E36, E37, E38 HOLE
MILL MAX, 2501-2-00-80-00-00-07-0
2
4
JP1, JP2, JP4, JP5
HEADER, SINGLE ROW 3PIN
SULLINS, NRPN031PAEN-RC
3
6
J1, J2, J3, J4, J5, J6
STUD, TEST PIN
PEM, KFH-032-10
4
12
J1, J2, J3, J4, J5, J6 (x2)
NUT, BRASS 10-32
ANY, #10-32
5
6
LUG RING, #10
KEYSTONE, 8205
6
6
WASHER, #10 TIN PLATED BRASS
ANY, #10 EXT BZ TN
7
3
J10, J11, J12
CONN., BNC PC MOUNT RECEPT.
JACK, 50Ω, TF-4 POST
AMPHENOL CONNEX, 112404
8
1
J13
CONN., HEADER, 2X7, 2mm, R/A
(F)
SULLINS, NPPN072FJFN-RC
9
1
J14
HEADER, 12PIN 2mm STR DL
FCI, 98414-G06-12ULF
10
1
J15
CONN., HEADER, 2X7, 2mm, R/A
(M)
MOLEX, 87760-1416
11
1
J16
HEADER, 4PIN 2mm STR DL
HIROSE, DF3A-4P-2DSA
12
4
MH1, MH2, MH3, MH4
STANDOFF, SNAP ON
KEYSTONE, 8834
13
2
SW1, SW2
SWITCH, SUBMINIATURE SLIDE
C&K, JS202011CQN
14
4
XJP1, XJP2, XJP4, XJP5
SHUNT
SAMTEC, 2SN-BK-G
dc2283af
9
A
B
C
D
VIN
ALERTB
SDA
SCL
SYNC
GND
E38
E9
270uF
16V
2
OPT
OPT
OPT
R31
R35
R37
5
EXTVCC
OPT
R27
OPT
OPT
R36
R38
OPT
OPT
OPT
R26
R28
OPT
R25
C14
10nF
R23 1.96k 1%
R32
ITH0
13
14
27
17
18
26
SDA
ALERTB
SHARE_CLK
RUN0
RUN1
WP1
RUN0
ITH_R0
FAULT0
0
0
R156
0
R45
0
R42
R39
6
INTVCC_1
PGOOD1
E14
E13
PHASE_CFG
FREQ_CFG
VOUT1_CFG
VOUT0_CFG
ASEL1
ASEL0
TSNS1
TSNS0
ITH1
ITH_R1
ITH0
ITH_R0
WP
RUN1
RUN0
2.2uF
VDD25_1
1.0uF
SHARE_CLK
ALERTB
SDA
SCL
SYNC
EXTVCC
PGOOD0
24
23
22
21
20
19
9
10
29
30
C4 4.7uF
C7
C1
VDD33_1
LTC3884EUK
U1
R33
10K
VDD33_1
R4
0
VIN
OPT
C5
R3
0
VIN1
R34
10K
VDD33_1
FAULT1
FAULT0
VSENSE1-
VSENSE1+
ISENSE1-
ISENSE1+
BG1/EN1
BOOST1
SW1
TG1/PWM1
VSENSE0-
VSENSE0+
ISENSE0-
ISENSE0+
BG0/EN0
BOOST0
SW0
TG0/PWM0
BST1
BG1
36
37
16
15
31
32
4
R29
10K
VDD33_1
ITH_R1
PGOOD0
VSENSE0-
RUN1
FAULT1
VSENSE0+
ITH1
4
0
0
R46
0
R43
R40
PGOOD1
VSENSE1-
VSENSE1+
VSENSE1-
VSENSE1+
VSENSE0-
FAULT1
2010
2010
R48
0
2010
R47 0
2010
R44 0
INTVCC_1
SW1 SHT3
3
8
2
1
VIN1
Q1
BSG0811ND
TG1 SHT3
BG1 SHT3
VOUT1
PGOOD1
PGOOD0
D2
3
CMDSH-3-TR
0.1uF
FAULT0
R41 0
VOUT0
R30
10K
R19
0
BG0 SHT3
C15
INTVCC_1
CMDSH-3-TR
VSENSE0+
0.1uF
D1
SW0 SHT3
C8
VDD33_1
C16
220nF
SW1
3
TG1
35
C9
220nF
R15 0
34
2
1
8
7
42 BG0
43 BST0
45 SW0
44 TG0
TG0 SHT3
OPTION FOR FOUR-PHASE CONFIGURATION CONNECTION
ITH_R1
5
12
SCL
ITH_R0
11
40
SYNC
R13
2k
C13 OPT
R12
2k
0805
EXTVCC
4.7uF
C12 OPT
R22 30.1k 1%
VDD25_1
Q9
MMBT3906-AL3-R
SOT-323
R11
2k
C6
R2 1 1%
C3 2.2uF
C11 3.3nF
R10
10K
R1
0.002
2010
C10 150pF
R9
2k
C17
10nF
R8
10K
270uF
16V
+ C32
R7
10K
Q10
R6
10K
VDD33_1
+ C2
MMBT3906-AL3-R
SOT-323
ITH1
ITH0
OFF
JP1
WP1
ON
RUN1
RUN0
SHARE_CLK
E2
EXTVCC
VIN-
GND
J2
7V - 14V
J1
VIN
39
4
VIN1
1
1
BSG0811ND
Q4
5
6
7
CIN3
22uF
1210
CIN8
22uF
1210
R24
R20
715
1%
OPT
SCALE = NONE
`\
l_
PCB DES.
APP ENG.
COUT5
100uF
6.3V
1210
VOUT1
COUT1
100uF
6.3V
1210
VOUT0
DATE:
N/A
SIZE
1
D AT E
12/17/15
VOUT0+
VOUT1+
VOUT0-
GND
VOUT0
VOUT1
E6
J6
VOUT1-
GND
1.0V AT 160A
J5
VOUT1 SHT 2,3
E5
E4
J4
J3
VOUT0 SHT 3
E3
lA _A
AP P R O V E D
1
SHEET 1
LTC3884EUK
DEMO CIRCUIT 2283A
Friday, January 22, 2016
IC NO.
2
OF 4
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
R21
10
1%
COUT7
+ 470uF
2.5V
7343
R18
10
1%
COUT8
+ 470uF
2.5V
7343
2.5V
7343
2.5V
7343
R16
OPT
COUT4
+ 470uF
COUT3
+ 470uF
TECHNOLOGY
VSENSE1-
COUT6
100uF
6.3V
1210
VSENSE1+
VSENSE0-
COUT2
100uF
6.3V
1210
VSENSE0+
PROD
R5
OPT
REVISION HISTORY
DESCRIP T I O N
POLYPHASE SYNCHRONOUS BUCK
CONVERTER WITH POWER SYSTEM MANAGEMENT
TITLE: SCHEMATIC
R114
0
NOTE:
T1 - T8 ARE EXPOSED PCB VIAS
2
0.25uH
CIN6
22uF
1210
OPT
744301025
L2
CIN7
22uF
1210
R17
R14
715
1%
R113
0
2
-
0.25uH
REV
ECO
744301025
L1
CIN4
22uF
1210
APPROVALS
SW1 SHT3
CIN5
22uF
1210
SW0 SHT3
CIN2
22uF
1210
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
8
2
VIN1
5
6
7
BSG0811ND
Q2
5
6
7
CIN1
22uF
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.
8
2
5
6
7
VIN1
Q3
BSG0811ND
8
2
1
4
E1
1
3
3
10
VIN+
41
PGND
VIN
38
INTVCC
25
VDD25
46
IIN+
9
3
28
VDD33
PGOOD1
33
GND
49
4
4
10
3
10
9
9
3
VIN1
4
47
IINPGOOD0
48
9
10
10
5
A
B
C
D
DEMO MANUAL DC2283A
Schematic Diagram
dc2283af
A
B
C
GND
E37
OFF
JP2
WP2
ON
RUN1
SHARE_CLK
ALERTB
SDA
SCL
SYNC
Q28
ITH1
ITH_R1
C18
10nF
C38
10nF
R51
OPT
R112 OPT
R82
R84
R118 OPT
5
R56
R151 OPT
OPT
OPT
R152 OPT
R119 OPT
OPT
R59
OPT
R153 3.57k 1%
R57
OPT
R154 OPT
R108 30.1k 1%
VDD25_2
Q11
MMBT3906-AL3-R
SOT-323
MMBT3906-AL3-R
SOT-323
2
R131
10K
VDD33_2
R83
OPT
C20
R60 1 1%
47pF
WP2
27
SHARE_CLK
OPT
14
ALERTB
24
23
22
21
20
19
9
10
29
30
6
5
26
18
17
13
SDA
11
12
SCL
40
SYNC
R115
OPT
EXTVCC
0805
4.7uF
C29
C36
INTVCC_2
PHASE_CFG
FREQ_CFG
VOUT1_CFG
VOUT0_CFG
ASEL1
ASEL0
TSNS1
TSNS0
ITH1
ITH_R1
ITH0
ITH_R0
WP
RUN1
RUN0
SHARE_CLK
ALERTB
SDA
SCL
SYNC
EXTVCC
2.2uF
VDD33_2
VDD25_2
1.0uF
C47
38
C23 2.2uF
4.7uF
C24
R111
OPT
C19
R110
OPT
R129
0.002
2010
4
LTC3884EUK
U2
28
VIN2
39
VIN
25
VDD25
4
VIN
OPT
C45
R149 R109
0
0
VIN2
46
R50
10k
VDD33_2
FAULT1
FAULT0
VSENSE1-
VSENSE1+
ISENSE1-
ISENSE1+
BG1/EN1
BOOST1
SW1
TG1/PWM1
VSENSE0-
VSENSE0+
ISENSE0-
ISENSE0+
BG0/EN0
BOOST0
SW0
TG0/PWM0
IIN+
VIN
16
15
31
32
4
3
0
R132
D3
R49
10k
VSENSE1-
INTVCC_2
D4
SW3 SHT3
FAULT1
3
CMDSH-3-TR
0.1uF
PGOOD1
VSENSE1+
R140
0
TG3 SHT3
VSENSE1-
INTVCC_2
C46
CMDSH-3-TR
VSENSE1+
VDD33_2
C21
220nF
BST3
36
BG3
SW3
37
TG3
35
34
2
1
8
7
42 BG2
C33
220nF
C37
0.1uF
R53 0
45 SW2
43 BST2
44 TG2
SW2 SHT3
TG2 SHT3
3
8
2
1
VIN2
5
6
7
1
BSG0811ND
Q8
5
6
7
CIN16
22uF
1210
2
R148
0
0.25uH
R117
0
SCALE = NONE
`\
l_
PCB DES.
APP ENG.
DATE:
N/A
SIZE
COUT11
100uF
6.3V
1210
COUT10
100uF
6.3V
1210
VOUT1 SHT 1,3
2.5V
7343
2.5V
7343
COUT14
+ 470uF
1
SHEET 2
LTC3884EUK
DEMO CIRCUIT 2283A
Tuesday, January 26, 2016
IC NO.
POLYPHASE SYNCHRONOUS BUCK
CONVERTER WITH POWER SYSTEM MANAGEMENT
2
OF 4
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
COUT13
+ 470uF
2.5V
7343
VOUT1
COUT15
2.5V
7343
+ 470uF
VOUT1
1
COUT9
+ 470uF
TECHNOLOGY
COUT12
100uF
6.3V
1210
COUT16
100uF
6.3V
1210
TITLE: SCHEMATIC
R141 OPT
R143
715
1%
744301025
L4
CIN14
22uF
1210
R134 OPT
R135
715
1%
APPROVALS
SW3 SHT3
0.25uH
744301025
L3
CIN10
22uF
1210
CIN15
22uF
1210
CIN11
22uF
1210
CIN13
22uF
1210
SW2 SHT3
CIN9
22uF
1210
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CUSTOMER NOTICE
8
2
VIN2
5
6
7
BSG0811ND
Q6
5
6
7
CIN12
22uF
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.
BG3 SHT3
8
2
1
VIN2
Q7
BSG0811ND
BG2 SHT3
8
2
1
VIN2
Q5
BSG0811ND
3
10
D
1
3
10
INTVCC
PGND
41
3
4
VDD33
PGOOD1
33
GND
49
4
3
10
9
4
47
IINPGOOD0
48
9
9
4
9
3
10
5
A
B
C
D
DEMO MANUAL DC2283A
Schematic Diagram
11
dc2283af
A
B
C
BG0
SW0
TG0
R96
20K
154k
R93
4
5
3
2
1
Q13
OPT
4
1
2
3
Q12
OPT
CIN18
OPT
1210
DIV
V+
OUT
4
5
6
5
70Hz, 3% Duty Cycle
SET
GND
MOD
U5 LTC6992IS6-1
CIN17
OPT
1210
R103
5K
R95
20K
R104
1k
1%
R99
301
1%
R86
OPT
2512
VOUT1
CIN19
OPT
1210
100nF
C39
BLEEDER LOADS
R85
OPT
2512
CIN20
OPT
1210
+5.5V
C41
1.0uF
Q14
OPT
4
VOUT0
1M
R94
R97
681K
1%
0
4
R91
BG1
SW1
TG1
Q15
OPT
5
1
2
3
D
5
1
2
3
VIN1
5
1
2
3
3
2
5
BG2
SW2
TG2
V+
+IN
V-
CIN22
OPT
1210
CIN21
OPT
1210
BG3
SW3
TG3
4
Q27
OPT
VIN2
Q18
OPT
4
CIN24
OPT
1210
CIN23
OPT
1210
OFF
ON
JP4
BIAS
VIN
R106
80.6k
1%
2
0
R116
-IN
VOUT
4
1
4
3.3 1%
82.5 1%
R100
C40
150pF
R92
1
INT
3
R98
10K
EXT
JP5
PULSE
R89
2
EXT PULSE
E7
R101
OPT
2512
Q23
SUD50N04-8M8P
R102
0.01
2512
3
1
C42
1.0uF
SUD50N04-8M8P
Q24
C34
100uF
6.3V
1210
E8
2
J12
11
ISET
FBO
RUN
VIN
0
470uF
2.5V
7343
+ COUT22
VOUT1
470uF
2.5V
7343
L5
68uH
470uF
2.5V
7343
47nF
C49
470uF
2.5V
7343
+ COUT23
COUT24
100uF
6.3V
1210
COUT19
100uF
6.3V
1210
SUMIDA CDRH105
+ COUT17 + COUT18
VOUT0
10
6
7
9
1
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
2
C30
100uF
10V
1210
COUT28
100uF
6.3V
1210
COUT27
100uF
6.3V
1210
OPT
C48
`\
l_
SCALE = NONE
APP ENG.
PCB DES.
APPROVALS
COUT25
100uF
6.3V
1210
COUT20
100uF
6.3V
1210
R107
20K
R105
118K
1%
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.
CUSTOMER NOTICE
2010
R90 0
2010
SS
VPRG2
VPRG1
VFB
SW
U4
LTC3630EMSE
R88
IOUT STEP
GND
C35
100uF
6.3V
1210
5
12
220pF
C43
C31
10uF
16V
1210
3
OPTIONAL 5.5V BIAS
3
DYNAMIC LOAD TEST CIRCUIT, FOR DEMO BOARD ONLY
Q16
OPT
4
U6 LT1803IS5
4
Q17
OPT
VIN2
5
1
2
3
VIN1
5
1
2
3
5
1
2
3
OPTIONAL MOSFETs
5
1
2
3
1
3
4
GND
8
GND
16
GND
14
GND
17
12
2
5
J10
VOUT0
J11
DATE:
N/A
SIZE
TECHNOLOGY
1
SHEET 3
LTC3884EUK
DEMO CIRCUIT 2283A
Friday, January 22, 2016
IC NO.
2
OF 4
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
POLYPHASE SYNCHRONOUS BUCK
CONVERTER WITH POWER SYSTEM MANAGEMENT
TITLE: SCHEMATIC
VOUT1
VOUT1 SHT 1,2
COUT26 2
1.0uF
1
EXTVCC
VOUT0 SHT 1
COUT21 2
1.0uF
1
OPT
R87
C44
100uF
10V
1210
+5.5V
1
A
B
C
D
DEMO MANUAL DC2283A
Schematic Diagram
dc2283af
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
VIN
3
SDA
SCL
WP
VCC
R144
15.8k
Q29
DMP3130L-7
2
100nF
C50
3V3
EESCL
EESDA
5
VDD33_1
EEWP
7
6
5
8 AUXVCC
1
2
3
4
5
6
7
8
9
10
11
12
24LC024-I/ST
VSS
A2
A1
A0
E21
GND
4
3
2
1
U7
2
2
4 AUX3V4
3
2
1
D12
TO DC1613A
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN_0
OUTEN_1
GND
AUXSCL
AUXSDA
J14
TO DC2086A
R123 10K
3V3
AUX3V4
SCL
GND
SDA
1
D
J16
1
1
VIN
3
R155
15.8k
2
R128
4.99K
Q30
DMP3130L-7
R124 10K
3V3
E36
AUXP
1
VDD33_2
VDD33_2
R150
4.99K
4
3
FAULT0
ALERTB
1
D5
OPT
R136
4
2N7002A
Q21
GREEN
GPIO0
R79
200
OPT
R122
3V3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SCL
J13
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
SDA
E23
SDA
DEMO HEADER (F)
E22
ALERTB
FAULT1
E24
SCL
SYNC
1
D6
SHARE_CLK
3V3
2N7002A
Q22
GREEN
ALERTB
1206
R139
OPT
R127
0
1
R145
OPT
E26
E25
R146
OPT
GPIO1
R80
200
VIN
3V3
SYNC
SHARE_CLK
3V3
D7
3
DMP3130L-7
Q20
R126
OPT
R81
127
ALERTB
RED
R142
OPT
FAULTB
CTRL
ALERTB
SDA
SHARE_CLK
SCL
RESETB
AUXP
UNUSED
UNUSED
GND
GND
12V
12V
D9
3V3
2N7002A
Q26
GREEN
PGOOD0
R130
200
2
R121
OPT
CUSTOMER NOTICE
1
J15
OFF
5
ON
SW1
RUN1
D11
OPT
PGOOD1
C27
10nF
R69
10
D10
OPT
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.
PGOOD0
DEMO HEADER (M)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R120 OPT
R147 0
R137 0
R138 OPT
ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN
3
2
5
3
2
2
3
4
1
6
3
D13
3
2
D8
3V3
2
l_
SCALE = NONE
`\
PCB DES.
FAULT1
FAULT0
FAULT1
RUN0
E35
RUN1
RUN1
RUN0
E34
FAULT0
E28
E27
DATE:
N/A
SIZE
TECHNOLOGY
1
SHEET 4
LTC3884EUK
DEMO CIRCUIT 2283A
Friday, January 22, 2016
IC NO.
2
OF 4
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
1
POLYPHASE SYNCHRONOUS BUCK
CONVERTER WITH POWER SYSTEM MANAGEMENT
TITLE: SCHEMATIC
2N7002A
Q25
GREEN
C28
10nF
R70
10
PGOOD1
R125
200
2
APPROVALS
1
OFF
5
ON
SW2
RUN0
R133
OPT
APP ENG.
2
4
1
6
3
3
2
VDD33_1
A
B
C
D
DEMO MANUAL DC2283A
Schematic Diagram
dc2283af
13
DEMO MANUAL DC2283A
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
14 Linear Technology Corporation
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