LTC3721-2 LINER [Linear Technology], LTC3721-2 Datasheet - Page 15

• Manufacturer Part Number: LTC3721-2
• Description: Synchronous Rectifier Driver for Forward Converters
• Manufacturer: LINER [Linear Technology]

Typical applicaTions
L1: PULSE PA1393.302
L2: COILCRAFT DO1607B-155
ALL CERAMIC CAPS ARE X5R OR X7R
12.4k
1µF
0.1µF
36V TO 72V
158k
V
13.3k
IN
133k
82k
22k
370k
97.6k
47nF
20k
7
3
9
5
6
1
2
V
U1
SD/V
R
BLANK
SS
V
COMP
FB
R
OSC
SEC
LT1952-1
36V to 72V Input to 12V, 14A Output Converter in 1/8th Brick Footprint
The Efficiency of 12V Output Converter is Over 95% at 8A Output.
DELAY
I
PGND
PZTA42
SENSE
S
GND
OUT
OUT
V
OC
IN
82k
14
11
10
15
8
13
12
16
V
U1
PDZ10B
1.5mH
75k
2k
Si7430
L2
96
94
90
88
86
82
92
84
4.7µF
0
V
U1
220pF
2
BAS516
0.010
2.2µF
4
6
1nF
I
OUT
PE-68386
1
6
2
5
8
PA0423
(A)
• •
• •
•
T1
10
7
10
560R
V
V
IN
OUT
12
HAT2244
= 48V
3900 TA04b
= 12V
14
470pF
38.3k
5
8
6
7
FB
SYNC
GND
TIMER
LTC3900
47k
CS
CS
V
CG
CC
BCX55
+
–
3
1
2
4
3µH
10k
L1
1µF
10k
PDZ7.5
LTC3900
1k
3900 TA04a
33µF
15
V
12V
14A
OUT
3900fb