DC1740A - Schematic

5
4
3
VDD33-1
VDD25-1
GND
2
1
REVISION HISTORY
INT/EXTVCC-1
ECO
R1
2
C2
0.22uF
C5
10uF
L1
R4
40
C25
10nF
Q8
15
RUN1
14
RUN0
23
SC
R22
0
R28
OPT
24
17
R29
10K
18
19
20
VDD33-1
21
VDD33
RUN0
TG1
ASEL
BOOST1
WP
SW1
SC
BG1
ISNS1+
FREQ_CFG
ISNS1-
VOUT0_CFG
VSENSE1
VOUT1_CFG
VTRIM0_CFG
GPIO1
VTRIM1_CFG
GND
1
GPIO0
R36
OPT
R37
OPT
R44
0
R45
0
+
+
C15
330uF
D3L
C10
330uF
D3L
*
R86
*
*
VSENSE+ TP15
VOUTO+
*
*
*
*
C
TP16
VOUTO-
VOUT1
30
R20 0
31
C26 100nF
29
L2
SW1-1
R21 0
0.4uH
2512
9
32
3
Q2
FDMS3600S
R23
1K
R25
0
R26
OPT
C31
R24
OPT
C32
C33
+ C27
+
100uF 100uF 100uF 330uF
D3L
C28
+ C29
330uF
D3L
+ C30
330uF 330uF
D3L
D3L
4
BG1-1
27
C34
0.22uF
13
12
R30 0
R31 1K
C35 1uF
VSENSE+
VDD33-1
B
VIN
VIN
R38 10K
TG0-1
SGND AND PGND CONNECTED AT
A SINGLE NODE NEAR U1
4
C82
C81
10uF
10uF
Q7
TG1-1
C80
10uF
C74
10uF
4
1
2
3
1
2
3
*
R43
5.76K
*
R19
C22
10uF
Q9
R42
C9
330uF
D3L
VSENSE-
D2
R39 10K
R41
15K
+
C14
330uF
D3L
R84 R74 R80 R83
2
ADDRESS: 0x48
R40
11K
+
VIN
TG1-1
5
R35
24.9K
41
B
R34
24.9K
8
7
6
5
7
R27 0
R33
20K
R85
C21 1uF
6
RUN1
VDD25-1
R32
20K
25
22
35
33
VSENSE0-
TSNS0
C13
R18 1K
36
PHASE
16
VSENSE0+
TSNS1
C12
100uF 100uF 100uF
R12
1
C23
10nF
ISNS0-
ITH0
C11
R11 R14
OPT OPT
J11
8
Q5
28
39
2
C
MMBT3906LT1G
MMBT3906LT1G
5
PLACE Q5,Q6 NEAR L2,L1. RESPECTIVELY
ISNS0+
ITH1
R10
0
R16 0
7
26
BG0
LTC3880EUJ
2512
R13
1K
GND
C20
0.22uF
3
ITH1
ALERT
SW0
U1
0
37
6
11
ALERTB
SYNC
BOOST0
D
VOUT0
SW0-1
9
38
5
*
SDA
TG0
2
8
SYNC
SCL
VDD25
10
SDA
R15
*
9
SCL
1
R17
C17
OPT
PGND
C19
100pF
34
*
INTVCC
C16
C18
100pF
VIN
*
Q1
FDMS3600S
BG0-1
4
R5 R6 R7 R8
10K 10K 10K 10K
3-23-12
VOUT0
J9
0
C6
100nF
C8
1uF
1
4
C7
1uF
R3
0.4uH
R9
DATE
YI S.
TG0-1
PHASE
VDD33-1
APPROVED
1st PROTOTYPE
VIN
D1
VDD33-1
GND
TP9
DESCRIPTION
1
EXTVCC_DRV
2
C69
150uF
OPT
5
D
+
C1
4.7uF
REV
__
INTVCC-1
1
J2
GND
C3
150uF
35V
VDD25-1
R2
+
TP5
INTVCC-1
J1
VIN
7V - 14V
TP4
3
VIN
VIN
TP3
TP2
2
TP6
VIN
GPIO0B GPIO1B
*
4
BG1-1
4
2. INSTALL SHUNTS AS SHOWN.
ASSY
A
BG0-1
1
2
3
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
Q10
1
2
3
NOTE: UNLESS OTHERWISE SPECIFIED
-A
-B
Vout0 / Iout0
Vout1 / Iout1
1.2V / 100A
1.5V / 25A
R84,R74,R80,R83
0
OPT
Fsw
R9,R85,R86 R12,R19
CUSTOMER NOTICE
425kHz
425kHz
0
OPT
C17
C16
R15
R17
JP2
JP5
4.7nF
4.7nF
4.7nF
4.7nF
OPT
0
4.87K
4.87K
"C"
"NC"
"C"
"NC"
1.5V / 75A
OPT
0
4
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
TECHNOLOGY
HZ
YI S.
3
OPTIONAL FOR
DISCRETE MOSFET
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
POLYPHASE DC/DC CONVERTER WITH DIGITAL PWR MANAGEMENT
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
SW1-1
5
5
SW0-1
Q11
N/A
SCALE = NONE
2
DATE:
IC NO.
REV.
LTC3880EUJ FAMILY
DEMO CIRCUIT 1740A
1
Tuesday, February 05, 2013
SHEET 1
1
OF 4
A
4
3
GND VDD33-2
TP19
2
TP22
TP20 TP21
R46 OPT
3
D
C39 100nF
R48 0
C41
1uF
C42
1uF
R61 0
14
16
24
R95
0
SC
R94
OPT
17
R96
10K
18
19
20
VDD33-2
21
WP
SW1
SC
BG1
ISNS1+
FREQ_CFG
ISNS1-
VOUT0_CFG
VSENSE1
VOUT1_CFG
VTRIM0_CFG
GPIO1
VTRIM1_CFG
GPIO0
GND
R72
24.9K
R73
OPT
8
7
6
6
1
R79
0
+
C49
330uF
D3L
R50
0
VOUT1
1.5V / 75A
TP24
VOUT1+
GND
R90 0
R58
0
D4
2
TP26
VOUT1-
Q4
FDMS3600S
C
C58
10uF
TG1-2
30
R59 0
31
SW1-2
C59 100nF
29
BG1-2
32
L4
R60
0.4uH
0
2512
9
R62
1K
3
R64
0
R63
OPT
R65
OPT
C64
100uF
C65
C66
100uF
100uF
+
C61
330uF
D3L
+ C62
+ C63
330uF
D3L
330uF
D3L
+ C60
330uF
D3L
4
27
R68 0
C67
0.22uF
13
12
VDD33-2
R69
1K
C68
1uF
R91 10K
R75
0
B
VIN
C84
TG0-2
SGND AND PGND CONNECTED AT
A SINGLE NODE NEAR U1
Q13 10uF
4
VIN
C83
C86
10uF
TG1-2
Q16 10uF
4
C85
10uF
1
2
3
1
2
3
R78
5.76K
C48
330uF
D3L
VIN
GPIO1B
R77
0
+
VSENSE-
ADDRESS: 0x49
R76
12.7K
C47
330uF
D3L
C54 1uF
7
5
R71
0
VDD33
BOOST1
41
R70
20K
25
ASEL
VDD25-2
B
VDD25
TG1
+
330uF
D3L
100uF
R57 1K
RUN1
RUN0
C46
VSENSE+
36
PHASE
23
VSENSE0-
TSNS0
100uF 100uF
+
5
RUN1
TSNS1
C45
J4
1
Q18
15
VSENSE0+
C44
R89 0
8
C57
10nF
ISNS0-
ITH0
R54
OPT
R53
OPT
R55 0
2
C56
10nF
40
ISNS0+
ITH1
C53
0.22uF
39
7
Q15
MMBT3906LT1G
MMBT3906LT1G
C
28
BG0
LTC3880EUJ
C43
37
3
5
PLACE Q15,Q18 NEAR L4,L3. RESPECTIVELY
22
5
26
ALERT
SW0
U2
4
11
ALERTB
SYNC
TG0
BOOST0
5
8
SDA
2
R67 0
SCL
1
SYNC
10
2512
R52
0
J3
0
38
PGND
SDA
R49
R51
1K
BG0-2
34
SCL
R56
4.87K
INTVCC
C52
100pF
33
35
C51
100pF
9
VOUT1
L3
9
0.4uH
VIN
C50
4.7nF
SW0-2
PHASE
ITH1
C37
10uF
VDD33-2
C40
0.22uF
R66 0
Q3
FDMS3600S
4
TG0-2
6
VIN
2
VIN
D3
1
R47
VDD25-2
VIN
EXTVCC_DRV
2
C36
4.7uF
D
1
INT/EXTVCC-2
1
VDD25-2
2
5
Q14
4
BG1-2
4
1
2
3
BG0-2
SW1-2
5
5
SW0-2
Q12
1
2
3
OPTIONAL FOR
DISCRETE MOSFET
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
TECHNOLOGY
HZ
YI S.
TITLE: SCHEMATIC
POLYPHASE DC/DC CONVERTER WITH DIGITAL PWR MANAGEMENT
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
N/A
SCALE = NONE
2
DATE:
IC NO.
REV.
LTC3880EUJ FAMILY
DEMO CIRCUIT 1740A
1
Tuesday, February 05, 2013
SHEET 2
1
OF 4
A
4
3
VOUT1
GND
2
IOUT TEST
R103 R111
0.02 0.02
C78
0.22uF
D5
GPIO0
GREEN
D6
Q23
2N7002A
1
GPIO0B
1
1
GPIO1B
TP0101K
Q22
D7
Q24
2N7002A
2
NOTE:
PULSE OUT
10mV / AMP
ALERTB
GPIO1
GREEN
3
TP42
+3.3V
R101
200
R100
200
3
R102
10K
+3.3V
D
J6
1
2
PULSE IN
Q21
SUD50N03-10CP-E3
1
2
3
4
5
TP40
VOUT
+3.3V
C72
0.22uF
D
J5
1
2
3
4
5
DYNAMIC LOAD CIRCUIT
1
3
3
R106 50
2
ALERT
RED
R104
127
2
5
VIN
ON
C
R107
100K
2
5
OFF
1
6
7
8
C77
1uF
U5
SHDN
GND
NC
GND
GND SENSE/ADJ
VIN
OUTPUT
LT1129CS8-5
4
C
3
C76
4.7uF
2
1
3V3
EXTVCC_DRV
VDD33-1
Q25
TP0101K
3
1
VIN
3V3
VIN
3
2
VIN
R82 10K
R88 10K
R81
10K
R87
10K
VIN
JP3
R105
100K
3
LED
ON
OFF
2
5
6
1
B
7
8
C73
1uF
U4
SHDN
GND
NC
GND
GND SENSE/ADJ
VIN
OUTPUT
LT1129CS8-3.3
4
3
+3.3V
B
2
1
C75
10uF
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.
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
VDD33-2
Q26
TP0101K
2
1
3
JP4
EXTVCC_DRV
4
3
APPROVALS
TECHNOLOGY
PCB DES.
HZ
APP ENG.
YI S.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
POLYPHASE DC/DC CONVERTER WITH DIGITAL PWR MANAGEMENT
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
REV.
LTC3880EUJ FAMILY
DEMO CIRCUIT 1740A
1
Tuesday, February 05, 2013
SHEET 3
1
OF 4
A
5
4
3
2
1
ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN
D
SDA
TP28
TP25
ALERTB
SCL
TP7
SDA
SC
TP10
SCL
SYNC
TP23
TP11
GPIO1B
R109 0
JP5
3
TP27
R119 0
SYNC
GPIO1B
2
ALERTB
AUXP
D
R126
OPT
1
C NC
GPIO0-GPIO1
GPIO0B
R128
OPT.
SC
R115
TP14
RUN0
0
RUN0
2
J10
1
2
3
4
5
6
7
8
9
10
11
12
AUXP
SDA
GND
SCL
LGKPWR
ALERTB
GPIO_1
OUTEN_0
OUTEN_1
GND
AUXSCL
AUXSDA
TO DC1613A
SHARE_CLK
FAULT2
FAULT3
FAULT1
SYNC_C
+3.3V
VIN_SNS
GND
VIN_EN
SCL
ALERTB
SDA
CONTROL0
SPARE1
SW3
SPARE2
WDI/RESETB
RUN1
CONTROL1
ON
SPARE3
SHARE_CLK
5
FAULT4
FAULT2
OFF
FAULT3
FAULT1
SPARE4
GND
J7 DEMO HEADER (F)
RUN1
VDD33-2
TP13
RUN1
VDD33-1
R112
10K
R110
10K
C
SW4
RUN0
2
R114
10
C70
10nF
4
1
3V3
C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
NC 1
ON
5
2
R113
10
OFF
6
3
1
+3.3V 2
VIN_SNS 3
GND 4
VIN_EN 5
SCL 6
ALERTB 7
SDA 8
CONTROL0 9
SPARE1 10
SPARE2 11
WDI/RESETB 12
CONTROL1 13
SPARE3 14
SHARE_CLK 15
FAULT4 16
FAULT2 17
FAULT3 18
FAULT1 19
SPARE4 20
GND
J8 DEMO HEADER (M)
0
4
1
3V3
R116
R124
OPT
JP2 3 C
RUN0-RUN1
6
3
R129
0
TP12
GPIO0B
C71
10nF
R117 OPT
R118 OPT
SGND
TP30
TP8
SGND
C79 100nF
B
B
R120
4.99K
U6
1
2
3
4
A0
VCC
A1
WP
A2
SCL
VSS SDA
8
AUXVCC
7
EEWP
6
EESCL
5
EESDA
R121
4.99K
R122
4.99K
24LC025-I/ST
R127
OPT
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.
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
APPROVALS
TECHNOLOGY
PCB DES.
HZ
APP ENG.
YI S.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
POLYPHASE DC/DC CONVERTER WITH DIGITAL PWR MANAGEMENT
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
REV.
LTC3880EUJ FAMILY
DEMO CIRCUIT 1740A
1
Tuesday, February 05, 2013
SHEET 4
1
OF 4
A
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