DC1411A - Schematic

5
4
3
2
1
REVISION HISTORY
INTVCC
ECO
-
REV
DESCRIPTION
2
APPROVED
PRODUCTION
DATE
06-16-10
GORAN P.
R26
100K
PGOOD
E14
INTVCC
D
R1
OPT
SNS2-
R33
38.3K
1
ON
2
OFF
3
VOUT
1
2
3
19
C17
0.1uF
18
INTVCC
17
5
GND
E10
VIN
L1
3.3uH
PA1494.362NL
SNS2-
2
D2
BAS140W
Q7
OPT
4
Q8
RJK0452
TG1
PGOOD
ILIM
SW1
VOUT+
C20
OPT
R6
232K
R3
VOUT
C1
OPT
C2
100pF
12.1K
R9
12.1K
B
VOUT
COUT6
COUT7
22uF
25V
1812
COUT8
COUT9
R8
EXTVCC
E1
R7
0
E21
R34
12.1K
RSNS2
RSNS4
0.008
2010
R18 0
C9
0.1uF
RUN
JP2
35HVH150M
GND
15
Q6
RJK0453
4
Q5
OPT
C8
4.7uF
0805
16
R21
10
0
RUN
5 - 24V #
VIN-
1
B
RUN
E9
C
1000
**B
CIN1
150uF
35V
EXTVCC
20
SENSE2+
VIN
+
5
E12
Q3
OPT
4
22uF
25V
E11
C10
VIN
VIN
CIN2
CIN3
CIN4
CIN5
R15 0
10
CLKIN
SNS1-
23
24
25
26
BAS140W
1
2
VIN+
E7
1
2
3
R19
1000
D
VBIAS
29
C18
R36
10K
9
4
JP1
TG2
3
14
PULSE SKIP
BOOST2
SW2
0.1uF
2
BURST MODE
BG2
SENSE2SENSE2+
FCC
INTVCC
SS
8
NC
7
C15
RUN
13
R35
10K
1
EXTVCC
12
SS
INTVCC
MODE
PGND
SGND
ITH
E8
COUT5
150uF
35V
35HVH150M
C16
0.1uF
MODE_PLLIN
5
6
VIN
22
21
CLKOUT
4
RUN
BG1
PHSMD
3
SGND
BOOST1
FREQ
2
E6
Q4
RJK0453
D1
RSNS3
RSNS1
0.008
2010
1
2
3
1
CLKOUT
27
28
R16
10K
JP5
PHASMD
SENSE1-
LTC3787EUFD
4
11
C
U1
3
SENSE1+
60
2
o
o
C4
0.1uF
VFB
90
C19
OPT
R5
0
R11
10K
L2
3.3uH
PA1494.362NL
R2
0
10
120
o
PHASMD
1
+
VIN
5
R10
OPT
SENSE1+
INTVCC
22uF
25V
1812
VIN
C5
1000
R17
10
SENSE1-
SNS1-
INTVCC
R13
10
**A
Q2
RJK0452
1
2
3
VIN
R4
OPT
COUT1
COUT2
COUT3
COUT4
5
Q1
OPT
4
+
COUT10
150uF
35V
35HVH150M
E2
24V / 6-10A
C3
15nF
*
GND
E4
EXTVCC
VOUTVBIAS
E13
GND
R31
OPT
VIN
E5
VOUT
NOTES:
E15
R32
2.2
A
*
- FOR VIN < VOUT ONLY
# - SURGE VOLTAGE UP TO 36V
** A
** B
Connect to RSNS1
Connect to RSNS2
CUSTOMER NOTICE
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
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
2. INSTALL SHUNTS AS SHOWN.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
2
TECHNOLOGY
A.K.
GORAN P.
TITLE: SCHEMATIC
HIGH CURRENT 2-PHASE SYNCHRONOUS BOOST CONVERTER
SIZE
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
DATE:
IC NO.
REV.
LTC3787EUFD
2
DEMO CIRCUIT 1411A
Wednesday, August 31, 2011
SHEET 1
1
OF 1
A
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