Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input
+12 Vdc/5 A, -12 Vdc/1.5 A Dual Outputs
Isolated
Low Cost
Fixed Frequency (300 kHz)
SCP/OCP
High Efficiency
Remote On/Off
High Power Density
Output Voltage Trim
Input Under- Voltage Lockout
Output Over-Voltage
(UVLO)
Protection (OVP)
UL60950-1 Recognized
(UL/cUL) and CE Mark
Over Temperature Protection
Description
The 0RXU-75TD10 is an isolated dc/dc converter that operates from a nominal 48 Vdc source. It provides up to
78 W of output power with two output voltages. Features include remote on/off, output adjust, short circuit
protection, over current protection, over-temperature shutdown, output over voltage protection, and input under
voltage lockout. This converter is provided in a compact, though-hole package that is easy to use and provides
good thermal performance.
Part Selection
Output Voltage
Input Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
+12 Vdc/-12 Vdc
36 Vdc - 75 Vdc
5 A/1.5 A
78 W
90%
0RXU-75TD10
Notes
: 1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
2. Add “G” suffix at the end of the model numbers listed above to indicate “Tray Packaging”.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage
-0.3 V
-
100 V
100 V for 10 mS Max.
Remote On/Off
-0.3 V
-
30 V
Ambient Temperature
-40
°C
-
85
°C
Storage Temperature
-40
°C
-
125
°C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
36 V
-
75 V
Input Current (no load)
-
200 mA
Input Current (full load)
-
3 A
Remote Off Input Current
-
10 mA
20 mA
Input Reflected Ripple Current
(rms)
-
10 mA
30 mA
Input Reflected Ripple Current
(pk-pk)
-
50 mA
100 mA
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 200k Hz
Turn On Voltage Threshold
32 V
34 V
35 V
Turn Off Voltage Threshold
30 V
31 V
33 V
Note:
All specifications are typical at nominal input, full load at 25
°C unless otherwise stated.
0RXU-75TD10
RoHS Compliant
Rev.A