ISOLATED DC/DC CONVERTERS
48 Vdc Input
54 Vdc/10.2 A Output
0RHB-F5S53x
RoHS Compliant
Rev.D
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Isolated
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Fixed Frequency
High Efficiency
OCP/SCP
High Power Density
Low Cost
Over Temperature Protection
Current Share and Iout monitor
Remote On/Off
Input Under Voltage Lockout
Output Over-Voltage Shut Down
Basic Insulation
Output Voltage Trim
Description
The 0RHB-F5S53x are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will
provide up to 550 W of output power from a nominal 48 Vdc input. This unit is designed to be highly efficient and
low cost. Features include remote on/off, over current protection, input under-voltage lockout, and current share
for parellel working. This converter is provided in an industry standard half- brick package.
Part Selection
Output
Input Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active High
Model Number
Active Low
Voltage
54 Vdc
48 Vdc
10.2 A
550 W
95%
0RHB-F5S530
0RHB-F5S53L
Notes: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging.
2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3 V
-
60 V
Remote On/Off
-0.3 V
-
-
-
-
-
18 V
1500 V
55 °C
I/O Isolation Voltage
Ambient Temperature
Storage Temperature
Work at 70°C at short term.
-5 °C
-55 °C
125 °C
Input Specifications
Parameter
Input Voltage
Min
38 V
-
Typ
48 V
-
Max
60 V
Notes
Input Current (full load)
15.2 A
Input Current (no load)
-
-
80 mA
100 mA
30 mA
Remote Off Input Current
20 mA
-
Tested with simulated source impedance
of 12 uH, 5 Hz to 20 MHz; Use 150 uF/100
V electrolytic capacitor with ESR=1 ohm
max, at 200 kHz@25°C.
Input Reflected Ripple Current (rms)
I2t Inrush Current Transient
-
200 mA
1 A2s
-
-
Turn-on Voltage Threshold
Turn-off Voltage Threshold
36 V
34 V
-
-
38 V
36 V
Note: All specifications are typical at 25 °C unless otherwise stated.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
