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ISOLATED DC/DC CONVERTERS
48 Vdc Input
3.3 Vdc/50 A, 5.0 Vdc/30 A Output
0RHB-C5T Series
RoHS Compliant
Rev.A
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Isolated
High Efficiency
High Power Density
Low Cost
Fixed Frequency (330 kHz)
Input Under/Over Voltage Lockout
UL60950-1 Recognized (UL/cUL)
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Output Over Voltage Shutdown
OCP/SCP
Over Temperature Protection
Remote On/Off
Output Voltage Trim
Positive/Negative Remote Sense
Description
The 0RHB-C5T Series are isolated dc/dc converters that operate from a nominal 48 Vdc source. This unit will
provide up to 165 W of output power from a nominal 48 Vdc input. This unit is designed to be highly efficient and
low cost. It is provided in an industry standard half-brick package.
Part Selection
Output
Voltage
5.0 V
3.3 V
Input
Voltage
48 V
48 V
Max. Output
Current
30 A
50 A
Max. Output
Power
150 W
165 W
Typical
Efficiency
93.0%
92.5%
Model Number
Active High
0RHB-C5T050
0RHB-C5T033
Model Number
Active Low
0RHB-C5T05L
0RHB-C5T03L
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
Input Voltage (continuous)
Remote On/Off
I/O Isolation Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
-
-40 ° C
-55 ° C
Typ
-
-
-
-
-
Max
80 V
18 V
2000 V
85 ° C
125 ° C
Notes
Input Specifications
Input Voltage
Parameter
Min
36V
Typ
48 V
Max
75 V
Notes
Input Current (full load)
Input Current (no load)
Remote Off Input Current
Vo=5.0 V
Vo=3.3 V
-
-
-
-
-
120 mA
5 mA
5.0 A
5.2 A
180 mA
20 mA
I t Inrush Current Transient
0.05 A s
0.1 A s
Input Reflected Ripple Current (pk-pk)
Input Reflected Ripple Current (rms)
2
Turn-on Voltage Threshold
Turn-off Voltage Threshold
Input Over Voltage Threshold
-
-
-
31 V
29 V
76 V
20 mA
5 mA
2
-
-
-
40 mA
10 mA
2
35 V
33 V
80 V
Tested with simulated source impedance of
10 uH, 5 Hz to 20 MHz; use a 100 uF /100
V electrolytic capacitor with ESR = 1 ohm
max. at 200 kHz at 25 ° C.
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
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