DC2117A - Schematic

1
2
3
4
5
6
7
8
REVISION HISTORY
ECO
REV
DESCRIPTION
DATE
APPROVED
1
PROTO
05/28/13
W_
3
PROD
06/26/15
W_
4
PROD - Parts addition
03/30/16
W_
VIN
A
A
R1
191k
1%
INTVCC
U1
RUN
LTC3895EFE
INTVCC
R2 1.74k 1%
VIN
1
INTVCC
ON
2
C1
R3
OPT
OPT
C2 0.1uF
1
OVLO
INTVCC
R4
INTVCC
OPT
38
2
INTVCC
0.1uF
R7
OPT
C3
1nF
SENSE1-
4
5
SS
6
VOSP
C8 OPT
VIN
ITH
EXTVCC
CIN7
0.1uF
200V
1210
R12
2.2
32
CIN4
CIN6
0.1uF
200V
1210
CIN3
CIN2
0.47uF
0.47uF
0.47uF
3
4
5
6
7
8
10k
140k 1%
8
C10 100pF
200V
200V
200V
+ CIN1
100uF
200V
CIN5
0.47uF
200V
14V - 130V
9
P.S.
BURST ADJ.
10
GND
MODE
VIN
GND
VIN
C11
0.033uF
200V
BURST DEFAULT
JP4
CLKOUT
NDRV
28
Q1
OPT
1
13
E7
PLLIN
DRVCC
7443633300
Q4
BSC520N15NS3G
Q5
OPT
PGOOD
INTVCC
GND
BG
24
E9
R19
R20
R21
OPT
OPT
OPT
18
INTVCC
FREQ
BOOST
DRVSET
SW
DRVUV
TG
2512
VOUT
COUT1 COUT2
+ 150uF
22uF
16V
16V
1210
7343
R38
COUT3
+ 150uF
16V
7343
COUT4
+ OPT
7343
12V, 5A
GND
J4
R37 OPT
D1
0
VOUT
J3
VOUT
OPT
OPT
NC
R22
17
PLLIN
4
E10
1
2
3
16
CLKOUT
4
BG
E8
1
2
3
15
JP5
R36
10
1%
RS1 0.006
4.7uF
14
3
B
VOSP
L1 33uH
26
2
OFF
E6
BSC520N15NS3G
C12
1
200V
4
GND
100% DUTY
ON
4
VIN-
CIN8
OPT
Q3
BSC520N15NS3G
Q2
JP6
12
INTVCC
J2
30
CPUMP_EN
5
2
R15
5
1
R14
FCM
R17
R18
49.9k
1%
VIN
J1
EXTVCC
VFB
C7
11
100k
RUN
L3
1.0uH
1
2
3
100k
SS
E2
VIN
JP2
5
R16
OPT
1
2
3
JP3
B
90
R11
OPT
34
C6 4700pF
7
C5
1uF
MODE
INTVCC
R13
10K 1%
SENSE1-
RUN
180
3
5
MODE
C9 10pF
PHASMD
36
4
0
E5
SENSE1+
E4
2
2
R8
C4
3
R9
10M
JP1
120
3
E3
ILIM
1
R10
37
0
OPT
SENSE1+
R6
301k
1%
VPRG
OFF
3
PHASE MD
R5
C16 OPT
GND
22
C13
0.1uF
21
SW
20
TG
R39
OPT
R25
30.1k
1%
100K
E11
R26
80.6k
1%
PGOOD
R27
0
SW
SENSE1+
GND
R23
R24
0
2SW
R40 OPT
39
19
R28
VIN
E12
0
SENSE1-
EXTVCC
C
JP7
R29
0
U2
TG
C14
0.47uF
200V
1812
R31
2M
1%
LTC3639EMSE
VIN
SW
2
2
Q6
OPT
R33
OPT
3
VFB
VPRG2
GND
NC
NC
NC
NC
ISET
2
4
13
15
CUSTOMER NOTICE
3
4
5
6
10
TECHNOLOGY
`\
W _A
HIGH INPUT VOLTAGE SYNCHRONOUS
BUCK CONVERTER
IC NO.
N/A
SCALE = NONE
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
SIZE
2
SS
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
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
6
17
11
R34
196k
7
FBO
GND
GND
5
D
C15
4.7uF
16V
9
OVLO
R35
0
BG
1
R32
267k
1%
RUN
VPRG1
12
Q7
OPT
1
14
JP8
SW
2
SW
3
BG
MSS104BT
3
OFF
8
16
1
1
VBIAS
1
ON
C
R30
10
1%
EXTVCC
L2 470uH
3
VIN
TG
D2
OPT
DATE:
7
LTC3895EFE
DEMO CIRCUIT 2117A
SHEET 1
Tuesday, May 31, 2016
8
REV.
4
OF 1
D
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