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0RHB-D3T28L

型号：

0RHB-D3T28L

品牌：

BEL[ BEL FUSE INC. ]

页数：

8 页

PDF大小：

223 K

下载PDF手册
ISOLATED DC/DC CONVERTERS  
48 Vdc Input  
28 Vdc/7 A Output  
0RHB-D3T28x  
RoHS Compliant  
Rev.B  
•
•
•
•
•
•
•
•
Isolated  
•
•
•
•
•
•
OCP/SCP  
High Efficiency  
Over Temperature Protection  
Basic Insulation  
High Power Density  
Low Cost  
Remote On/Off  
Input Under Voltage Lockout  
Output Over-Voltage Shut Down  
Fixed Frequency (300 kHz)  
Positive/Negative Remote Sense  
Output Voltage Trim  
UL60950-1 Recognized  
EN60950-1 Recognized  
Description  
The 0RHB-D3T28x are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will  
provide up to 230 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. 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  
28 Vdc  
36 Vdc - 75 Vdc  
7 A  
230 W  
91%  
0RHB-D3T280  
0RHB-D3T28L  
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  
100 V for 100 mSec input transient  
capability.  
Input Voltage (continuous)  
-0.3 V  
-
80 V  
Remote On/Off  
-0.3 V  
-
-
-
-
35 V  
1500 V  
85 °C  
I/O Isolation Voltage  
Ambient Temperature  
-40 °C  
Storage Temperature  
-
-55 °C  
125 °C  
Input Specifications  
Parameter  
Input Voltage  
Min  
36V  
Typ  
48 V  
-
Max  
75 V  
Notes  
Input Current (full load)  
Input Current (no load)  
Remote Off Input Current  
-
-
-
7.5 A  
50 mA  
30 mA  
30 mA  
20 mA  
Tested with simulated source impedance  
of 15 uH, 5 Hz to 20 MHz; Use 2*220  
uF/100 V electrolytic capacitor with ESR=1  
ohm max, at 200 KHz@25°C.  
Input Reflected Ripple Current (pk-pk)  
-
40 mA  
-
Input Reflected Ripple Current (rms)  
I2t Inrush Current Transient  
-
-
6 mA  
-
-
0.1 A2s  
Turn-on Voltage Threshold  
Turn-off Voltage Threshold  
33 V  
31 V  
34.5 V  
32 V  
35.5 V  
34 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  
ISOLATED DC/DC CONVERTERS  
48 Vdc Input  
28 Vdc/7 A Output  
Output Specifications  
Parameter  
Min  
Typ  
Max  
Notes  
Vin=48 V, full load  
Output Voltage Set Point  
27.72 V  
28.00 V  
28.28 V  
Line Regulation  
Load Regulation  
-
-
-
-
56 mV  
56 mV  
Regulation Over Temperature  
(-40deg.C-85deg.C)  
-
-
300 mV  
Output Current  
0 A  
-
-
7 A  
32.5 V  
15 A  
Output Voltage Trim Range  
Current Limit Threshold  
24 V  
11 A  
12.5 A  
Ripple and Noise (rms)  
-
-
80 mV  
with a 220 uF low ESR aluminum  
capacitor at output.  
Ripple and Noise (pk-pk)  
Turn On Time  
-
20 mS  
-
-
40 mS  
0%  
-
200 mV  
80 mS  
2%  
Overshoot at Turn on  
Output Capacitance  
0 uF  
5000 uF  
Transient Response  
Overshoot  
-
-
-
-
350 mV  
400 uS  
350 mV  
400 uS  
500 mV  
600 uS  
500 mV  
600 uS  
20% ~ 100%  
Max Load  
di/dt=1 A/us, Vin=48 Vdc, Ta=25°C,  
with a 1µF ceramic capacitor and  
220 uF low ESR aluminum  
capacitor output.  
Settling Time  
Overshoot  
100% ~ 20%  
Max Load  
Settling Time  
Note: All specifications are typical at nominal input, full load at 25 °C unless noted.  
General Specifications  
Parameter  
Min  
Typ  
Max  
Notes  
Efficiency  
88%  
91%  
-
Vin=48 V, full load , Ta=25°C  
Switching Frequency  
-
300 kHz  
-
Input to Output  
-
-
1500 V  
1500 V  
500 V  
-
Input to Case  
-
-
Output to Case  
-
-
Isolation Resistance  
Isolation Capacitance  
Remote Sense Compesation  
Over Temperature Protection  
Over Voltage Protection  
10 MΩ  
-
-
0 V  
-
-
1500 pF  
2 V  
-
105 ℃  
-
It’s the temperature of baseplate.  
33.5 V  
-
36 V  
Calculated Per Bell Core SR-332 (IO =  
Nominal; Ta = 25 °C)  
MTBF  
TBD  
Dimensions  
Inches  
millimeters  
2.28 x 2.40 x 0.50  
57.91 x 60.96 x 12.70  
Weight  
-
85 g  
-
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  
ISOLATED DC/DC CONVERTERS  
48 Vdc Input  
28 Vdc/7 A Output  
Control Specifications  
Parameter  
Min  
Typ  
Max  
Notes  
Remote On/Off  
Signal Low (Unit On)  
-0.3 V  
2.4 V  
-0.3 V  
2.4 V  
0 mA  
-
-
-
-
-
0.8 V  
35 V  
0.8 V  
35 V  
2 mA  
The remote on/off pin open, Unit  
off.  
Active Low  
Signal High (Unit Off)  
Signal Low (Unit Off)  
Signal High (Unit On)  
Current Sink  
The remote on/off pin open, Unit  
on.  
Active High  
Output Trim Equations  
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected  
between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim pin and the  
Vout. Only one of the resistors should be used for any given application.  
Vout  
(100+ delta)⋅Vo −122.5  
Rtrimup  
Rtrimup=  
− 2  
[kΩ  
]
Module  
Module  
Trim  
GND  
1.225⋅delta  
Vout  
Trim  
GND  
100  
Rtrimdown =  
− 2  
[kΩ  
]
delta  
Rtrimdown  
Note:  
(
Vo _ req −Vo  
)
delta =  
×100  
[%]  
Vo  
Vo_req=Desired(trimmed) output voltage[V]  
Output voltage Vo=28.000 V  
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  
48 Vdc Input  
28 Vdc/7 A Output  
Efficiency Data  
95.0%  
90.0%  
85.0%  
80.0%  
75.0%  
36 V  
48 V  
76 V  
70.0%  
0.7A  
1.75A  
3.5A  
5.25A  
7A  
OUTPUT CURRENT(A)  
Vo=32.5 V  
Thermal Derating Curve  
Vin=48 V, Vo=32.5 V  
Vin=75 V, Vo=28 V  
Note: With maximum junction temperature of semiconductors derated to 120C.  
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  
48 Vdc Input  
28 Vdc/7 A Output  
Ripple and Noise Waveforms  
36 Vdc input, 32.5 Vdc/7 A output  
48 Vdc input, 32.5 Vdc/7 A output  
75 Vdc input, 32.5 Vdc/7 A output  
Note: Ripple and noise at full load, with a 220 uF low ESR aluminum capacitor at output, and Ta=25 deg C.  
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  
48 Vdc Input  
28 Vdc/7 A Output  
Transient Response Waveforms  
Vout=32.5 V, 20% to 100% Load Transients  
Vout=32.5 V, 100% to 20% Load Transients  
Note: Transient Response at di/dt=1 A/us, Vin=48 Vdc, with a 1µF ceramic capacitor and 220 µF low ESR  
aluminum capacitor at output, and Ta=25 deg C.  
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  
48 Vdc Input  
28 Vdc/7 A Output  
Mechanical Outline  
Pin Connections  
pin function pin size pin function pin size  
1
2
3
4
5
Vin(+)  
CNT  
Case  
Vin(-)  
Vo(-)  
0.039"  
0.039"  
0.039"  
0.039"  
0.079"  
6
7
8
9
Sense(-)  
Trim  
Sense(+)  
Vo(+)  
0.039"  
0.039"  
0.039"  
0.079"  
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  
48 Vdc Input  
28 Vdc/7 A Output  
INSTALLATION INSTRUCTION  
For DC-DC Converter, Model 0RHB-D3T28x  
1) The DC-DC Converter can be operated at an ambient temperature up to 85°C maximum.  
2) The DC-DC Converter is a built-in component. During installation into certain equipment the relevant  
requirements of EN 60950-1:2001 + A11 and IEC 60950-1:2001 shall be maintained.  
3) The DC-DC converter is not internal fused, the end user is to provide a maximum normal below 15A fuse in  
unearthed pin when install the converter into final system.  
4) The creepage distances, clearances and thickness of insulation between unearthed hazardous voltage input  
and SELV output circuits have complied with basic insulation requirements according to EN 60950-1:2001 +  
A11 and IEC 60950-1:2001.  
5) The output ratings as shown on the label must not be exceeded.  
6) The equipment is to be supplied from a DC source which is separated from AC mains by double or reinforced  
insulation, or by basic insulation and suitable earthing providing equivalent protection.  
7) The equipment is intended to be installed into a class I or Class II system, suitable external protection  
devices have to provide in the final system. Protective earth has to be reliably identified and if equipment is  
to be installed into Class I system.  
8) The equipment shall be installed with an external cooling condition(air-cooling or heat sink) that maintain heat  
sink at stable temperature of 100°C, typical cooling conditions are given in derating for reference. The airflow  
direction is towards the side of the equipment.  
RoHS Compliance  
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and  
other hazardous substances from electronic products.  
©2007 Bel Fuse Inc. Specifications subject to change without notice. 101007  
CORPORATE  
FAR EAST  
EUROPE  
Bel Fuse Inc.  
Bel Fuse Ltd.  
Bel Fuse Europe Ltd.  
206 Van Vorst Street  
Jersey City, NJ 07302  
Tel 201-432-0463  
Fax 201-432-9542  
www.belfuse.com  
8F/ 8 Luk Hop Street  
San Po Kong  
Kowloon, Hong Kong  
Tel 852-2328-5515  
Fax 852-2352-3706  
www.belfuse.com  
Preston Technology Management Centre  
Marsh Lane, Suite G7, Preston  
Lancashire, PR1 8UD, U.K.  
Tel 44-1772-556601  
Fax 44-1772-888366  
www.belfuse.com  
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