Analog Devices 2787A User Manual

12
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
VIN
INTVCC3 EXTVCC
VIN
VIN
INTVCC3
INTVCC3
INTVCC3
VOUT
INTVCC3
VOUTA
RUN
TRACK/SS
ITH
VFB
CLKOUT2
PGOOD
CLKOUT3
FAULT
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.
ForADICustomerUseOnly
CUSTOMER NOTICE
ANALOGDEVICESINC.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ANALOGDEVICES INC.APPLICATIONSENGINEERINGFORASSISTANCE.
THISCIRCUITISPROPRIETARYTOANALOGDEVICESINC.AND SUPPLIEDFORUSEWITHANALOGDEVICESINC.PARTS.
SCALE=NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCABOM: PCAASS'Y:
www.analog.com
43
` \
` `
LTC7821
DC2787A
700-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
710-DC2787A_REV03
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
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.
ForADICustomerUseOnly
CUSTOMER NOTICE
ANALOGDEVICESINC.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ANALOGDEVICES INC.APPLICATIONSENGINEERINGFORASSISTANCE.
THISCIRCUITISPROPRIETARYTOANALOGDEVICESINC.AND SUPPLIEDFORUSEWITHANALOGDEVICESINC.PARTS.
SCALE=NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCABOM: PCAASS'Y:
www.analog.com
43
` \
` `
LTC7821
DC2787A
700-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
710-DC2787A_REV03
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
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.
ForADICustomerUseOnly
CUSTOMER NOTICE
ANALOGDEVICESINC.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ANALOGDEVICES INC.APPLICATIONSENGINEERINGFORASSISTANCE.
THISCIRCUITISPROPRIETARYTOANALOGDEVICESINC.AND SUPPLIEDFORUSEWITHANALOGDEVICESINC.PARTS.
SCALE=NONE
SIZE:
SKU NO.
SCHEMATIC NO. AND REVISION:
PCABOM: PCAASS'Y:
www.analog.com
43
` \
` `
LTC7821
DC2787A
700-DC2787A_REV03
705-DC2787A_REV03
N/A
Thursday, May 16, 2019
710-DC2787A_REV03
HIGH EFFICIENCY, POLYPHASE HYBRID STEP-DOWN
CONVERTER
Q33 OPT
4
5
6
7
8
3
1
2
Q32
OPT
4
5
6
7
8
3
1
2
C90 10uF 100V
C98 10uF
100V
1210
R262
OPT
R14
0
C160
OPT
C13
0.1uF
C75
C80 10uF
1210
R62 10k
1%
C14
0.22uF
C38
R65
OPT
R45
0
C259
4.7uF
D11
CMDSH-4E
2 1
C192 10uF
C169 0.1uF
R22 10k
1%
R64
53.6k
1%
C76 10uF 100V 1210
C215
27pF
C158 2.2uF
C260 4.7uF
0805
C92 10uF
C17 0.1uF
R19 1k
R46
OPT
C28
D13
CMDSH-4E
21
Q2
BSZ070N08LS5
4
5
6
7
8
3
1
2
R229 0
R75
60.4k 1%
R11 0
C93 10uF
Q22A2
OPT
5
6
7
4
2
3
8
1
Q30
OPT
4
5
6
7
8
3
1
2
R53
1
C189
RN3
OPT
t°
C203 2.2uF 100V 1210
C159 1uF
R241
0
C94 10uF
100V
1210
C171
OPT
C77
C170 0.22uF
D12
CMDSH-4E
2 1
R70
6.81k
0805
C206 2.2uF 100V 1210
Q4
BSC032N04LS
4
5
6
7
8
3
1
2
C195 10uF
C78 10uF
100V
L3 2uH
R275 0
C197
10uF
100V
C190
1210
R76
0
R258
0
R44
OPT
Q31 OPT
4
5
6
7
8
3
1
2
C191
1210
C200 10uF
100V
C99 10uF
100V
1210
Q1A1 OPT
5
6
7
4
2
3
8
1
C198
C199
Q12
BSC014N04LSI
4
5
6
7
8
3
1
2
C193 10uF
100V
1210
R61 1k
R276 0
C196
C201
Q6
BSC032N04LS
4
5
6
7
8
3
1
2
R66 4.32k 1%
C104 2.2uF 100V 1210
R52
100k
C173
0.47uF
C194 10uF
100V
1210
R230
0
U3
LTC7821EUH
MODE/PLLIN
1
CLKOUT
2
RUN
3
FAULTB
4
PGOOD
5
TIMER
6
TRACK/SS
7
EXT_REF
8
ISENSE+
15
EXTVCC
16
ISENSE-
14
PGND
17
BG2
18
INTVCC
19
SW3
20
TG2
21
BG1
24
HYS_PRGM
9
ITH
10
FREQ
11
TEMP
12
VFB
13
BOOST3
22
BOOST2
23
MID
25
MIDSENSE
26
VINSENSE
27
VIN
28
SW1
29
TG1
30
BOOST1
31
NC
32
SGND
33
C202
1210
C79
10uF
C172
OPT
C7 2.2uF 100V 1210
C12
0.1uF

Analog Devices 2787A Specifications

General

Brand	Analog Devices
Model	2787A
Category	Motherboard
Language	English