ISOLATED DC/DC CONVERTERS
48 Vdc Input 12 Vdc /18 A Output
0RQB-D0T12x
RoHS Compliant
Rev.B
•
•
•
•
•
•
Fixed Frequency (300 kHz)
Isolated
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•
•
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Output Over Voltage Latch Off
Over Temperature Protection
SCP/OCP
High Efficiency
High Power Density
Input Under Voltage Lockout
Basic Insulation
Low Cost
Remote On/Off
Description
The 0RQB-D0T12x are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will
provide up to 216 W of output power from a nominal 48 Vdc input. These units are designed to be highly efficient
and low cost. Features include remote on/off, over current protection, input under-voltage and output over voltage
protection. These converters are provided in an industry standard quarter brick package.
Part Selection
Output
Input Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active High
Model Number
Active Low
Voltage
12 Vdc
36 Vdc - 75 Vdc
18 A
216 W
92.5%
0RQB-D0T120
0RQB-D0T12L
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
-
80 V
Remote On/Off
-0.3 V
-
-
18 V
I/O Isolation Voltage
Ambient Temperature
Storage Temperature
-
-
-
2250 V
-40 °C
-55 °C
85 °C
125 °C
Note: All specifications are typical at 25 °C unless otherwise stated.
Input Specifications
Parameter
Min
36 V
-
-
-
Typ
48 V
110 mA
-
Max
75 V
200 mA
7 A
Notes
Input Voltage
Input Current (no load)
Input Current (full load)
Remote Off Input Current
4 mA
7 mA
Input Reflected Ripple Current
(pk-pk)
With simulated source impedance of 12
uH, 5 Hz to 20 MHz; use a 220uF/100 V
electrolytic capacitor with ESR = 1 ohm
max. at 200 kHz
-
-
20 mA
5 mA
-
-
Input Reflected Ripple Current
(rms)
I2t Inrush Current Transient
Turn-on Voltage Threshold
Turn-off Voltage Threshold
-
-
TBD
34 V
33 V
-
35 V
-
31 V
Note: All specifications are typical at nominal input, full load 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
