16
dc2312afb
DEMO MANUAL
DC2312A-A/DC2312A-B
SCHEMATIC DIAGRAM DC2312A-A
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
7V
-14
V
16
V
16
V
2.
I
NS
TA
LL
SHUN
TS
AS
SH
OW
N.
1.
A
LL
RES
IS
TO
RS
ARE
IN
O
HMS
, 0402
.
ALL
CAPAC
IT
ORS
ARE
IN
M
ICR
OF
ARADS
, 0402
.
NOTE:
UNLESS
OTHER
W
ISE
SPECIFIE
D
16
V
FP
100
7R
3-
R
17
-R
FP
100
7R
3-
R
17
-R
O
PT
IO
N
AL
F
O
R
2
-PHASE
O
PER
AT
IO
N
ADJ
.
UP
T
O
2
V
M
A
X
35
A
ADJ
.
UP
T
O
2
V
M
A
X
35
A
ISNS0+
ISNS0-
PWM0
PWM1
ISNS1+
ISNS1-
VDD25
VDD25
VDD33
VIN
VCC
VDD33
VDR
VDR
VDR
VDR
VDR
VDR
VDD33
VDD33
VDD25
FAULT0
FAULT1
SCL
VIN
SDA
ALERTB
VSENSE0-
SCL
SDA
ALERTB
FAULT0
FAULT1
RUN0
SYNC
SHARE_CLK
ASEL1
VOUT0_CFG
VOUT1_CFG
FREQ_CFG
PHAS_CFG
VIN
VOUT0
VSENSE0-
ASEL0
ASEL0
ASEL1
VOUT0_CFG
VOUT1_CFG
FREQ_CFG
PHAS_CFG
SYNC
SHARE_CLK
RUN1
IAVG1
IAVG0
TSNS0
TSNS1
COMP1
COMP0
TSNS0
TSNS1
COMP0
COMP1
VFB1
IAVG1
IAVG0
VFB1
VFB0
VOUT1
RUN0
RUN1
FAULT1
FAULT0
RUN1
RUN0
VDD33
PGOOD0
PGOOD0
PGOOD1
PGOOD1
VSENSE1-
VSENSE1-
VSENSE1-
VSENSE0-
VOUT0
VOUT1
REVISIO
N
HI
STO
RY
DESCRIPT
IO
N
DA
TE
APPROVE
D
EC
O
RE
V
HAORAN W.
PRODUCTION
51-
72-
7
2
__
REVISIO
N
HI
STO
RY
DESCRIPT
IO
N
DA
TE
APPROVE
D
EC
O
RE
V
HAORAN W.
PRODUCTION
51-
72-
7
2
__
REVISIO
N
HI
STO
RY
DESCRIPT
IO
N
DA
TE
APPROVE
D
EC
O
RE
V
HAORAN W.
PRODUCTION
51-
72-
7
2
__
SI
ZE
DA
TE
:
.V
ER
.O
N
CI
SH
EE
T
OF
TITLE
:
APP
RO
VA
LS
PCB
DES
.
APP
ENG
.
TE
CHN
O
LOG
Y
Fax:
(408)434-050
7
M
ilp
itas
, CA
9503
5
Phone:
(408)432-190
0
1630
Mc
Car
thy
B
lvd
.
LTC
Conf
id
ent
ia
l-For
Customer
Use
O
nl
y
CUSTOMER
NOTIC
E
LI
NEAR
TE
CHN
OL
OG
Y
HAS
M
ADE
A
BES
T
EFFO
RT
TO
DES
IG
N
A
CI
RC
UIT
THAT
M
EETS
CUST
OM
ER-SUPPL
IED
SPE
CIFIC
AT
IO
NS
;
HO
WEVER,
IT
RE
M
AINS
THE
CUST
OM
ER
'S
RESP
ONSIBILITY
T
O
VER
IFY
PR
OPER
AND
RE
LI
AB
LE
O
PERA
TIO
N
IN
T
HE
AC
TUA
L
APP
LI
CA
TIO
N.
C
OM
PO
NEN
T
SUBS
TITU
TIO
N
AND
PR
IN
TE
D
CI
RCU
IT
BO
ARD
L
AY
OU
T
M
AY
S
IG
NIFI
CAN
TLY
A
FFE
CT
CI
RCU
IT
PER
FO
RM
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O
R
RE
LI
AB
ILITY
.
CO
NT
AC
T
LI
NEA
R
TE
CHN
OL
OG
Y
APP
LIC
ATIO
NS
E
NG
IN
EER
IN
G
FO
R
ASS
IS
TANC
E.
TH
IS
C
IRCU
IT
IS
PR
OP
RIE
TARY
TO
LI
NEAR
TE
CHN
OL
OG
Y
AN
D
SCH
EM
AT
IC
SUPP
LIE
D
FO
R
USE
W
ITH
LI
NEAR
TE
CHN
OL
OG
Y
PAR
TS
.
SCA
LE
=
N
ON
E
www
.lin
ea
r.c
om
2
Thursday, October 29, 2015
1
3
HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT
HZ
HAORAN W.
N/A
LTC3882EUJ-1
DEMO CIRCUIT 2312A-A
SI
ZE
DA
TE
:
.V
ER
.O
N
CI
SH
EE
T
OF
TITLE
:
APP
RO
VA
LS
PCB
DES
.
APP
ENG
.
TE
CHN
O
LOG
Y
Fax:
(408)434-050
7
M
ilp
itas
, CA
9503
5
Phone:
(408)432-190
0
1630
Mc
Car
thy
B
lvd
.
LTC
Conf
id
ent
ia
l-For
Customer
Use
O
nl
y
CUSTOMER
NOTIC
E
LI
NEAR
TE
CHN
OL
OG
Y
HAS
M
ADE
A
BES
T
EFFO
RT
TO
DES
IG
N
A
CI
RC
UIT
THAT
M
EETS
CUST
OM
ER-SUPPL
IED
SPE
CIFIC
AT
IO
NS
;
HO
WEVER,
IT
RE
M
AINS
THE
CUST
OM
ER
'S
RESP
ONSIBILITY
T
O
VER
IFY
PR
OPER
AND
RE
LI
AB
LE
O
PERA
TIO
N
IN
T
HE
AC
TUA
L
APP
LI
CA
TIO
N.
C
OM
PO
NEN
T
SUBS
TITU
TIO
N
AND
PR
IN
TE
D
CI
RCU
IT
BO
ARD
L
AY
OU
T
M
AY
S
IG
NIFI
CAN
TLY
A
FFE
CT
CI
RCU
IT
PER
FO
RM
ANCE
O
R
RE
LI
AB
ILITY
.
CO
NT
AC
T
LI
NEA
R
TE
CHN
OL
OG
Y
APP
LIC
ATIO
NS
E
NG
IN
EER
IN
G
FO
R
ASS
IS
TANC
E.
TH
IS
C
IRCU
IT
IS
PR
OP
RIE
TARY
TO
LI
NEAR
TE
CHN
OL
OG
Y
AN
D
SCH
EM
AT
IC
SUPP
LIE
D
FO
R
USE
W
ITH
LI
NEAR
TE
CHN
OL
OG
Y
PAR
TS
.
SCA
LE
=
N
ON
E
www
.lin
ea
r.c
om
2
Thursday, October 29, 2015
1
3
HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT
HZ
HAORAN W.
N/A
LTC3882EUJ-1
DEMO CIRCUIT 2312A-A
SI
ZE
DA
TE
:
.V
ER
.O
N
CI
SH
EE
T
OF
TITLE
:
APP
RO
VA
LS
PCB
DES
.
APP
ENG
.
TE
CHN
O
LOG
Y
Fax:
(408)434-050
7
M
ilp
itas
, CA
9503
5
Phone:
(408)432-190
0
1630
Mc
Car
thy
B
lvd
.
LTC
Conf
id
ent
ia
l-For
Customer
Use
O
nl
y
CUSTOMER
NOTIC
E
LI
NEAR
TE
CHN
OL
OG
Y
HAS
M
ADE
A
BES
T
EFFO
RT
TO
DES
IG
N
A
CI
RC
UIT
THAT
M
EETS
CUST
OM
ER-SUPPL
IED
SPE
CIFIC
AT
IO
NS
;
HO
WEVER,
IT
RE
M
AINS
THE
CUST
OM
ER
'S
RESP
ONSIBILITY
T
O
VER
IFY
PR
OPER
AND
RE
LI
AB
LE
O
PERA
TIO
N
IN
T
HE
AC
TUA
L
APP
LI
CA
TIO
N.
C
OM
PO
NEN
T
SUBS
TITU
TIO
N
AND
PR
IN
TE
D
CI
RCU
IT
BO
ARD
L
AY
OU
T
M
AY
S
IG
NIFI
CAN
TLY
A
FFE
CT
CI
RCU
IT
PER
FO
RM
ANCE
O
R
RE
LI
AB
ILITY
.
CO
NT
AC
T
LI
NEA
R
TE
CHN
OL
OG
Y
APP
LIC
ATIO
NS
E
NG
IN
EER
IN
G
FO
R
ASS
IS
TANC
E.
TH
IS
C
IRCU
IT
IS
PR
OP
RIE
TARY
TO
LI
NEAR
TE
CHN
OL
OG
Y
AN
D
SCH
EM
AT
IC
SUPP
LIE
D
FO
R
USE
W
ITH
LI
NEAR
TE
CHN
OL
OG
Y
PAR
TS
.
SCA
LE
=
N
ON
E
www
.lin
ea
r.c
om
2
Thursday, October 29, 2015
1
3
HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT
HZ
HAORAN W.
N/A
LTC3882EUJ-1
DEMO CIRCUIT 2312A-A
R15 24.9K
R12
53.6k
P4
+
C16 470uF
2.5V
R1
1
R34
OPT
C7 2.2uF
R32
OPT
P2
C41 OPT
C22
220pF
L2
0.17uH
+
C19 470uF
2.5V
J2
GND
R60
1k
R33
OPT
C31
1uF
R35
OPT
R5
0
C23
100uF
1206
R62
OPT
C5 0.1uF
R101
OPT
C14
100uF
1206
E4
VDD25
R100
OPT
0603
R36
OPT
R99
OPT
C42
0.22uF
E3
VDD33
C52 0.1uF
C20
0.22uF
R67
OPT
+
C26 470uF
2.5V
+
C17 470uF
2.5V
U2
LTC3882EUJ-1
COMP0
1
TSNS0
2
TSNS1
3
VIN
SN
S
4
IAV
G_G
ND
5
PGOOD0
6
PWM0
7
SYNC
8
SCL
9
SDA
10
ALERT
11
FAULT0
12
FAULT1
13
RUN0
14
RUN1
15
ASEL0
16
ASEL1
17
VOUT0_CFG
18
VOUT1_CFG
19
FREQ_CFG
20
PHAS_CFG
21
VDD
25
22
SHARE_CLK
23
VDD
33
24
VC
C
25
PWM1
26
PGOOD1
27
COMP1
28
FB1
29
IAVG1
30
31
ISENSE1-
32
33
VSENSE1-
34
VSENSE0-
35
36
ISENSE0-
37
38
IAVG0
39
FB0
40
GN
D
41
R46
0
0603
E1
VIN
P1
R7
2.67k
R29
OPT
R43
10k
0603
+
C4 330uF
J1
VIN
J4
GND
+
C27 470uF
2.5V
R37
OPT
+
C18 470uF
2.5V
+
C3
330uF
C35 1uF
R30
OPT
R98
OPT
C38
100uF
1206
R44
10k
0603
+
C28 470uF
2.5V
R27
2.67k
E19
VOUT1-
Q1
MMBT3906LT1G
R24
0
0603
R10
10k
0603
R57
1k
C9 1uF
R38
OPT
R18
1.24K
G
L
A
G
N
D
V
IN
P
G
N
D
U3
FDMF5820DC
PWM
1
ZCD#
2
VC
C
3
AGND
4
BOOT
5
NC
6
PHASE
7
VIN
8
VIN
9
VIN
10
VIN
11
PGND
12
PGND
13
PGND
14
SW
16
SW
17
SW
18
SW
19
SW
20
SW
21
SW
22
SW
23
SW
24
SW
25
SW
26
GL
27
PGND
15
TM
ON
30
EN/FAULT#
31
AGND
32
PGND
34
GL
35
VIN
33
PGND
28
PVC
C
29
C32 10nF
C39
100uF
1206
R59
1k
J8
GND
R16 0
0603
Q6
MMBT3906LT1G
R11
10k
0603
C50
10pF
G
L
A
G
N
D
V
IN
P
G
N
D
U1
FDMF5820DC
PWM
1
ZCD#
2
VC
C
3
AGND
4
BOOT
5
NC
6
PHASE
7
VIN
8
VIN
9
VIN
10
VIN
11
PGND
12
PGND
13
PGND
14
SW
16
SW
17
SW
18
SW
19
SW
20
SW
21
SW
22
SW
23
SW
24
SW
25
SW
26
GL
27
PGND
15
TM
ON
30
EN/FAULT#
31
AGND
32
PGND
34
GL
35
VIN
33
PGND
28
PVC
C
29
E7
VOUT0+
E9
VOUT1+
R17
10k
0603
C8
1uF
E2
GND
C40
100uF
1206
C48 10nF
R20
53.6k
C37 OPT
R39
OPT
R22
0
0603
R49
OPT
2512
R13
10k
0603
R25
0
C30
10pF
J9
VOUT1
C53 0.1uF
C34 22uF
1210
C10 22uF
1210
C54
220pF
R58
1k
J3
VOUT0
+
C15 470uF
2.5V
C21
680pF
C43
100uF
1206
C36
100nF
R2
24.9K
P3
R9
1.24K
R61
OPT
0603
R28
10k
0603
C33 22uF
1210
C6 22uF
1210
R19
10k
0603
C1 1uF
C12
100uF
1206
R40
OPT
R14
10k
0603
E8
VOUT0-
R31
OPT
R41
10k
0603
R21
10k
0603
L1
0.17uH
C55
680pF
C2 1uF
C11
100nF
C13
100uF
1206
