DC968A-C - Schematic

4
Q10
PZTA42 VU1
3
L2
1.5mH
DO1607B-155ML-C
VR2
1
2 GND
TG 5
R42
0
3 ROSC
4 SYNC
SOUT 16
VIN 15
OUT 14
PGND 13
1
C9
R20
100pF 59K
5 SS/MAXDC DELAY 12
6 VR=2.5V
OC 11
7 SD/VSEC ISENSE 10
C10
0.1uF
R22
13.3K
8 GND
VR2 R32
442K
R29
22K
2 D10
BAT760
BLANK 9
R23
2K
R24
82K
C7
220pF
C8
100pF
VU1
CU1
4.7uF
16V
1206
6
2
5
3
4
C11
2200pF
R26
220
C23
1uF
16V
SW0
VU1
1
3
2
1
R47
10K
1
2
3
4
5
6
7
8
C6
C5
BAS521 0.22uF
50V
0805
0805
SW1 R16
47K 0805
D9
PDZ7.5B
2
1
R18
10K
C27
0.1uF
C28
0.1uF
C30
100pF
R48
150
U7
1 VCC BOOST 6
2 GND
TG 5
3 INP
TS 4
R45
10K
C29
0.1uF
2
R31
10
C15
2200pF
250V
1812
C12
470pF
FG
GND 6
FG 5
C14
1uF
10V
0805
R27
270
U4
LT4430ES6
10V
1 VCC OPTO 6
C16
0.22uF
2 GND COMP 5
3 OC
R19
38.3K
1%
2 CS- TIMER 7
3 CG
C
SYNC
1 CS+ SYNC 8
R21
10K
FB 4
C19
1uF
10V
0805
C17
R34
3300pF 8.45K
1%
C18
10pF
R35 +VO1
348K
1% 0805
C24
10pF
B
R38
18.2K
1%
D14
BAS516
1
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
LTC4440ES6
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.
3
VERSIONS
-A
VIN
34V-75V
VOUT
[email protected]
[email protected]
-B
18V-36V
-C
36V-72V
[email protected]
-D
36V-72V
[email protected]
CONTRACT NO.
APPROVALS
DRAWN:
TECHNOLOGY
KIM T.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE:
CHECKED:
APPROVED:
ENGINEER: GORAN P.
DESIGNER:
ISOLATED DC/DC POWER CONVERTER
SIZE
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
VAUX
U5
LTC3900CS8
* FOR ASSEMBLY
1
2
3
C26
220pF
D13
PDZ5.1B
A
5
R10
1K
4
2
OUT R46
OPT
VAUX
-VOUT
1
Q9
BCX55
Q13
IRF6217
R44
11.3K
U3
74VHC123AMTC
A1 VCC 16
B1 RC1 15
R1
C1 14
-Q1
Q1 13
Q2
-Q2 12
R2 11
C2
RC2 B2 10
GND A2 9
L3
680uH
D11
BAS516
1
2
C25
OPT
1206
TP5
4 VCC
U6
PS2801-1
4
R30
1.2K
R43
OPT
D8
OPT
D
VAUX
4
2
1
R17
560
5
6
7
8
+5V
SYNC
16V
APXE
VAUX
B
D12
BAS516
2
1
0805
2
T2
PE-68386
PULSE ENG.
1
*
CSYS
CG
VFB
OPTIONAL CIRCUIT
0805
D7
BAS521
D6
OPT
VU1
R33
158K
+VB R28
442K
C4
OPT
+VOUT
+ 150uF
TP6
DO1608C-684ML-C
R6
OPT
C13
1uF
CO1
CO2 OPT
CO3 OPT
33uF
16V
1812
1
R3
57.6
1% OUT
TP4
Q3
HAT2244
R8
2.2
RCS1
0.010
2010
220pF
+VO1
CG
Q2
HAT2244
C2
820pF
200V
1206
1
R15
133K
1 COMP
2 FB=1.23V
3
2
R9
47
2
2
3
R14
33K
D1
BAS516
FG
4
5
Q1
PHM21NQ15T
R7
0
TS 4
C21
R13
22K
Q12
BC856T
1
+VIN
9
10
11
2
1 VCCBOOST 6
3 INP
U1
LT1952EGN-1
SW1
7
8
3
U2
LTC4440ES6-5
C
6
SW0
C3
1uF
16V
L1
3uH
PA1393.302
2
5
1
4
3
1
D3
BAS516
R5
10
VFB
1
1
VU1
D2
BAS516
2
1
TP3
T1
PA0423
2
D5
PDZ10B
2
-VIN
R11
82K
CIN1
CIN2
CIN3
2.2uF
100V
TDK
1812
TP2
4
2
2
1
*
D
+VB
R1
2.2
2
+VIN
1 1
+VIN
TP1
3
2
5
DATE:
2
DWG NO.
DC968A2-C
REV
LT1952EGN-1, LTC3900CS8, LT4430ES6
Wednesday, January 21, 2009
SHEET 1
1
A2-C
OF 1
A
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