DC2050A - Schematic

5
+VIN
4
3
2
E3
1
L1
3.3uH
PQI2050-3R3
SW1
36V - 72V
T1
G45R2-0209
J1
4.7uF
100V
CIN1
CIN2
CIN3
1210
14.7K 14
6
SYNC
26
2
38
39
PGND
PGND
1
36
34
TOS
AOUT
TBLNK
SOUT
SYNC
INTVCC
RT
INTVCC
ISENSEN
3
E2
NC
TAS
C2
4.7uF
25V
0805
COMP
R21 1K
RCS1
0.012
0815
15
32
J4
5.1
1206
30
C12
0.1uF
5
C
R18
100K
D5
BAS516
C5
22pF
R1 1uF
30.1K
C3
22nF
R10
OPT
R29
100
0805
INTVCC
R15
1K
R23
100
U2
PS2801-1
C13
1uF
R19
100K
4
1
3
2
C18
4.7nF
C22
22uF
10V
0805
D4
BZT52C4V3
+VO1
C20
R16
34.8K
3
V+
1
NOTE:
UNLESS OTHERWISE SPECIFIED:
ALL RESISTORS & CAPACITORS ARE 0603 .
ALL RESISTORS ARE 1% MULTILAYER RESISTORS.
ALL CERAMIC CAPACITORS ARE X7R
REF
RTOP
8
RMID
GND-F
GND-S
6
5
4
R28
137K
7
T1(OPT 2)
PA2720NL
6
7
SW1
8
9
10
SW2
1630 McCarthy Blvd.
Milpitas, CA 95035
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
Phone: (408)432-1900 www.linear.com
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
TECHNOLOGY Fax: (408)434-0507
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
LTC Confidential-For Customer Use Only
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
TITLE: SCHEMATIC
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
48VIN TO 5V, 20A ISOLATED DC/DC CONVERTER IN 1/8 BRICK
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
R20
137K
2
COMP
COLLECTOR
U3
LT1431CS8
EVAL1: EFE PACKAGE (FE38 (31) )
BOARD SIZE: 2.30 BY 1.45
B
+VO1
1uF
C21
3.3nF
5
-VOUT
E6
B
A
D
Q3
BSC0902NSI
R24
1K
4
1
CSYS
560uF
10V
+VO1
250V
1812
T1-5
+
R25
10K
E1
2
CO2
1210
OPT
C1
CY1
2200pF
T1-2
5V / 20A
Q2
IRF6217
20
SGND
GND
+VOUT
16
FB
R2
NC
TAO
22
21
SW2
C15
0.22uF
1210
250V
R26
200
0805
C14
68nF
1206
250V
CO1
47uF
10V
1210
5.1
0805
R32
24
4
13
IVSEC
PGND
12
ISENSEP
19
44.2K 11
LT3753EFE
OVLO
SS2
R5
8
17
57.6K
OUT
U1
GND
10
R6
5
Q1
BSC190N15NS3 G
OC
UVLO_VSEC
18
9
1.87K
SS1
1.96K
R7
NC
R8
TEST1
0805
TEST2
VIN
R9 105K
NC
28
E4
37
C4
1uF
100V
0805
E5
J3
Q4
BSC0902NSI
R33
2
11
T1-5
J2
C
8
T1-2
R17
15
7
-VIN
+
NC
C31
33uF
100V
(OPT)
D
+VO1
4
3
2
N/A
DATE:
IC NO.
REV.
LT3753EFE
DEMO CIRCUIT 2050A
SHEET
Monday, March 17, 2014
1
3
1
OF
1
A
Similar pages