LT3748_15 Datasheet, PDF (28/34 Pages) Linear Technology – 100V Isolated Flyback Controller

LT3748
typical Applications
V_IN
48V TYP
4.7µF
0.22µF
825k
EN/UVLO ^VIN
49.9k
LT3748
R_FB
R_REF
T1 _D1
1:1
66Ω _44.1µH
150pF
226k
6.04k
TC
GATE
SS
SENSE
V_C
GND INTV_CC
2nF 10k
4700pF
4.7µF
M1
0.030Ω
3748 F19
4.7µF
100V
×3
V_OUT+
48V
0.5A
V_OUT–
D1: CENTRAL SEMICONDUCTOR CMR5U-02-LTC
M1: VISHAY Si7464DP
T1: COILTRONICS VERSA-PAC VP4-0060-R
Figure 19. 48V, 0.5A Supply from 24V to 96V Input
100
95
V_IN = 24V
90
85
V_IN = 48V
80
V_IN = 96V
75
70
65
60
0
0.1
0.2
0.3
0.4 0.5
OUTPUT CURRENT (A)
3748 F20
Figure 20. Efficiency of 48V Supply of Figure 17
28
For more information www.linear.com/LT3748
3748fb