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ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2-2.5 Vdc/80 A, 3.3 Vdc/70 A, 5 Vdc/48 A, 12 Vdc/20 A Output
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
V O =12.0 V
V O =5.0 V
91%
89%
94%
92.5%
-
-
V O =3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Switching Frequency
Isolation capacitance
Remote Sense Compesation
Output Voltage Trim Range
Over Temperature Protection
Over Voltage Protection
89%
88%
86%
84%
82%
280 kHz
-
-
80% Vo
-
-
92%
91%
89%
87%
85%
330 kHz
1500 pF
-
-
125 ° C
130% Vo
-
-
-
-
-
380 kHz
-
10% Vo
110% Vo
-
-
Vin=48 V, full load , Ta=25 ° C
The total voltage increased by trim and
remote sense should not exceed
10%Vo.
Vin=48V, full load, Hiccup mode
Calculated Per Bell Core SR-332
MTBF
Dimensions
Inches
millimeters
1,113,071 hours
2.28 x 2.4 x 0.42
57.51 x 60.98 x 10.67
(Vin=48 V; Vo=2.5 V, I O = 80%Iomax;
T a = 25 ° C)
Weight
-
76 g
-
Note: All specifications are typical at nominal input, full load at 25 ° C unless noted.
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
Signal Low (Unit Off)
Signal High (Unit On)
Current Sink
Active Low
Active High
-0.3 V
2.4 V
-0.3 V
2.4 V
0 mA
-
-
-
-
-
0.8 V
18 V
0.8 V
18 V
0.75 mA
0RHB-D0TxxL. The remote
on/off pin open, Unit off.
0RHB-D0Txx0. The remote
on/off pin open, Unit on.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 ? Tel 201-432-0463 ? Fax 201-432-9542 ? www.belfuse.com
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