Datasheet

LT3748
31
3748fb
For more information www.linear.com/LT3748
typical applications
Figure 25. 3.3V, 10A Isolated, Synchronous Flyback Converter
LOAD CURRENT (A)
0
EFFICIENCY (%)
100
95
90
85
80
75
70
LT3748 F26
10800400200 600
V
IN
= 36V
V
IN
= 48V
V
IN
= 72V
Figure 26. Efficiency of the Supply in Figure 25
INTV
CC
V
CC
V
OUT
+
3.3V, 10A
V
OUT
–
D5
V
IN
36V TO
72V
GATE
3748 F25
DRAIN
GND
120pF
100Ω
6.04k
158k
LT8309
0.22µF
19.1k
470pF
•
•
15k
22nF
0.015Ω
GATE
SENSE
R
REF
INTV
CC
V
C
SS
TC
EN/UVLO
R
FB
GND
LT3748
8:1.4
PA1477NL
3Ω
2k
4.7µF
M1 M2
4.7µF
1500µF
1.2M
51k
62µF
1µF D6
V
IN
4.7nF
•
68Ω
D1: SMBJ85A-13-F
D2: CMMRIU-02
D3: BAV20W-7-F
D4: BAV20W-7-F
D5: CMZ5914 B
D6: CMHZ5258B
M1: BSC320N20NS3G
M2: BSC016N04LS
D3
D1
D2
D4
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