11
DEMO MANUAL DC2787A
Rev. 0
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
SER2011-202MLD
INTVCC2
INTVCC2
INTVCC2
EXTVCC
INTVCC2
VOUT
VIN
INTVCC2
VIN
VIN
VIN
VOUTA
CLKOUT1
VFB
TRACK/SS
ITH
RUN
CLKOUT2
FAULT
PGOOD
DATE:
IC NO.
SHEET
OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB
DES.
APP
ENG.
Phone:
1
‐408
‐432
‐1900
Milpitas,
CA
95035
1630
McCarthy
Blvd.
SCALE
=
N
ON
E
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA
BOM:
PCA
ASS'Y:
www.analog.com
24
` \
] _
LTC7821
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
DC2787A
700-DC2787A_REV03
710-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
CONVERTER
DATE:
IC NO.
SHEET
OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB
DES.
APP
ENG.
Phone:
1
‐408
‐432
‐1900
Milpitas,
CA
95035
1630
McCarthy
Blvd.
SCALE
=
N
ON
E
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA
BOM:
PCA
ASS'Y:
www.analog.com
24
` \
] _
LTC7821
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
DC2787A
700-DC2787A_REV03
710-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
CONVERTER
DATE:
IC NO.
SHEET
OF
TITLE: DEMO CIRCUIT SCHEMATIC,
APPROVALS
PCB
DES.
APP
ENG.
Phone:
1
‐408
‐432
‐1900
Milpitas,
CA
95035
1630
McCarthy
Blvd.
SCALE
=
N
ON
E
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCA
BOM:
PCA
ASS'Y:
www.analog.com
24
` \
] _
LTC7821
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
DC2787A
700-DC2787A_REV03
710-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
CONVERTER
C127
C132
R40
0
C290
OPT
C147
C106
0.22uF
C122
C139 10uF 100V 1210
C292
OPT
C86 2.2uF
1210
100V
C125 10uF 100V 1210
C128
R255
0
C95
0.1uF
D6 CMDSH-4E
2
1
C107 0.1uF
C111
10uF 100V 1210
C143
C293
OPT
R37
100k
Q8
BSC014N04LSI
4
5
6
7
8
3
1
2
U2
LTC7821EUH
MODE/PLLIN
1
CLKOUT
2
RUN
3
FAULTB
4
PGOOD
5
TIMER
6
TRACK/SS
7
EXT_REF
8
15
EXTVCC
16
ISENSE-
14
PGND
17
BG2
18
INTVCC
19
SW3
20
TG2
21
BG1
24
HYS_PR
GM
9
ITH
10
FREQ
11
TEMP
12
VFB
13
BOOST3
22
BOOST2
23
MID
25
MIDSENSE
26
VINSEN
SE
27
VIN
28
SW1
29
TG1
30
BOOST1
31
NC
32
SG
ND
33
Q11
BSZ070N08LS5
4
5
6
7
8
3
1
2
C123
R273
0
C102
0.47uF
C287 0.1uF
C133
1210
C83 10uF 100V 1210
Q28 OPT
4
5
6
7
8
3
1
2
R43
6.81k 0805
Q29 OPT
4
5
6
7
8
3
1
2
R253 OPT
C129
C144
10uF 100V 1210
C140 10uF 100V 1210
R36 1
C124
C82 10uF 100V 1210
R274
0
Q9
BSC032N04LS
4
5
6
7
8
3
1
2
C113
R256
0
R34
OPT
C257
4.7uF
R48 53.6k 1%
RN2 OPT
t°
C87 2.2uF
1210
100V
C258
4.7uF
0805
C120
2.2uF
C130
10uF
D4
CMDSH-4E
2
1
Q26 OPT
4
5
6
7
8
3
1
2
C110
27pF
C145
C141
R35 0
C114
R41
0
R272 10k 1%
R251 OPT
C91
0.1uF
R244 60.4k 1%
R42
1k
C96
1uF
Q22A1
OPT
5
6
7
4
2
3
8
1
C126 10uF 100V
1210
C88 2.2uF
1210
100V
R49 10k 1%
Q27 OPT
4
5
6
7
8
3
1
2
Q10
BSC032N04LS
4
5
6
7
8
3
1
2
C131
100V
Q11A OPT
5
6
7
4
2
3
8
1
C85 2.2uF
1210
100V
R245 4.32k 1%
R228
0
R252
0
R254
0
C146
C142
C108 0.22uF
R234
OPT
C115
R38 1k
C121
10uF 100V 1210
D5
CMDSH-4E
2
1
L2
2uH
C100 10uF 100V 1210
