DC1032A - Schematic

4
3
2
T1
PA0801
8
C83
47pF
5
C85
47pF
NOTE:
1uF, 100V CER TDK C3225X7R2A105M(1210)
22uF, 16V CER TDK C3225X5R1C226M(1210)
39uF, 100V Sanyo 100ME39AX
47uF, 10V Taiyo Yuden LMK325BJ476MM-B(1210)
69uF, 16V Sanyo 6TQC68M
L1 Vishay IHLP-2525CZER1R0M-01
L2 PULSE PA1393.302
Q26 FMMT618
Q32 FMMT718
T1 Pulse PA0801 (4:4:4)
T2 Pulse PA0297 2(1.4mH):1:1
U2
R58
5.1K
LTC3726EGN
C78
33nF
C30
2.2nF
250V
R66
100K
-VOUT
-Vout
2
0
Q27
FCX491A
VCC
R75
opt.
3
16
C70
VCC
15 PT+
14 PT-
12V
12A
E8
R91
R83
R94
opt. D28
opt.
R56
100 MMBZ5236B
7.5V
SG
-VOUT
SG 1
C71
1uF
R76
1K
1
R85
1200pF
Q26
VSB
PT-
R61
100
5
R63
75K
6
4
R55
100
1%
909
FG 2
IS 10
GND
PGND
FS/IN-
11
C29
33nF
1200pF 1uF
6
C24
3
Q32
-
-VOUT
VCC
C
C23
opt.
R41
11.5K
FB/PH
ITH
R84
0
R53
opt.
1
C73
470pF
LTC3725EMSE
9
C55
GATE 7
NDRV 3
ULVO
2 SSFLT
R22
15.0K
4
U1
VSLMT
1
FB/IN+
T2
68uF
16V
E4
FS/SYNC
4
8 VCC
C72
0.1uF
68uF
16V
4
5
R54
Q25 100
1%
Q33
opt.
7.5K
R18
365K
0.004
1W
VCC
VA
C31
22uF
16V
+ C80
321
R50
321
R95
R77
0
B
R51 R52
1/4W 1/4W
56
56
220pF
3
C
R1
1/4W
56
C33
22uF
16V
+ C68
4
VA
9
C27
R29
100K
Q28
FDC2512
R48
0.025
1W
4
IS+ 11
6
5
2
1
100
C69
470pF
100V
D
8765
VSW
SLP
123
R3
8765
C66
330pF
200V
4
0
E2
7
7
R49
-Vin
2
IS- 10
5678
RUN/SS
C5
1.0uF
100V
+Vout
E3
Q12
HAT2244WP
R79
510
Q14
HAT2244WP
6
C4
1.0uF
100V
8
12
C3
1.0uF
100V
C2
1.0uF
100V
9
GND
36V-72Vin
3
4
SW
Q11
Q8
Si7450DP
Si7450DP
D
E7
4
2.8uH
PGND
1.0uH
1
10
8
E1
+
L2
11
5
13
L1
+Vin
1
MODE 3
5
R68
15.0K
R69
124K
C77
47uF
10V
C76
opt.
C79
1.0nF
R46
604
B
C75
47pF
-VOUT
VSW
VCC
SG
C82
68pF
R93
3
R92
150
Q35
MMBT2907A
150
VSB
D32
MMBZ5259B
39V
1
2N7002
D29
-VOUT
4
PT-
1N4148W
R89
249
-VOUT
5
10pF
Q34
2
A
VSW C81
D31
1N4148W
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
CIRUIT 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.
3
CONTRACT NO.
APPROVALS
DRAWN
DATE
J. WU
11/1/06
CHECKED
TECHNOLOGY
TITLE
A
LTC3725EMSE, LTC3726EGN
100W, 36V - 72Vin to 12V/12A Isolated Forward Converter
APPROVED
ENGINEER
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
K. Mathews
11/1/06
DESIGNER
Monday, December 03, 2007
2
SIZE
CAGE CODE
SCALE:
FILENAME:
DWG NO
REV
DC1032A
SHEET
1
A
1
OF
1
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