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
•
•
•
•
•
•
•
Isolated
•
•
•
•
•
•
Output Over Voltage Shutdown
OCP/SCP
High Efficiency
High Power Density
Low Cost
Over Temperature Protection
Remote On/Off
Fixed Frequency (330 kHz)
Input Under/Over Voltage Lockout
UL60950-1 Recognized (UL/cUL)
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
Input
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active High
Model Number
Active Low
Voltage
Voltage
5.0 V
3.3 V
48 V
48 V
30 A
50 A
150 W
165 W
93.0%
92.5%
0RHB-C5T050
0RHB-C5T033
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
Min
-0.3 V
-0.3 V
-
-40 °C
-55 °C
Typ
Max
80 V
18 V
2000 V
85 °C
125 °C
Notes
-
-
-
-
-
I/O Isolation Voltage
Ambient Temperature
Storage Temperature
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
36V
48 V
75 V
Input Current (full load)
Vo=5.0 V
Vo=3.3 V
-
-
-
-
-
5.0 A
5.2 A
180 mA
20 mA
Input Current (no load)
Remote Off Input Current
120 mA
5 mA
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.
Input Reflected Ripple Current (pk-pk)
-
20 mA
40 mA
Input Reflected Ripple Current (rms)
I2t Inrush Current Transient
-
-
5 mA
10 mA
0.05 A2s
0.1 A2s
Turn-on Voltage Threshold
Turn-off Voltage Threshold
Input Over Voltage Threshold
31 V
29 V
76 V
-
-
-
35 V
33 V
80 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