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0RSB-40U03B

型号：

0RSB-40U03B

描述：

隔离式DC / DC转换器[ ISOLATED DC/DC CONVERTERS ]

品牌：

BEL[ BEL FUSE INC. ]

页数：

14 页

PDF大小：

369 K

下载PDF手册
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
0RSB-40U03B  
Features  
RoHS Compliant  
Rev.A  
•
•
•
•
•
•
•
•
•
Isolated  
•
•
•
•
•
•
•
Output Over-Voltage Shutdown  
Output Voltage Trim  
High Efficiency  
High Power Density  
Fixed Frequency (500 kHz)  
Low Cost  
OCP/SCP  
Over Temperature Protection  
Remote On/Off  
Input Under-Voltage Lockout  
Basic Insulation  
Positive/Negative Remote Sense  
Comply with ANSI T1.315  
Class 1, Category 2, Non-Isolated DC/DC Converter (refer to IPC-9592)  
UL60950-1 Recognized (UL/cUL) (Pending)  
Applications  
•
•
•
Networking  
Computers and peripherals  
Telecommunications  
Description  
The 0RSB-40U03B is an isolated dc/dc converter that operates from a nominal 24 Vdc or 48 Vdc source. This  
unit will provide up to 33 W of output power from an 18-75 Vdc wide input range. This unit is designed to be  
highly efficient and low cost. Features include remote on/off, over current protection and under voltage lockout.  
This converter is provided in an industry standard sixteenth brick through hole package.  
Part Selection  
Output  
Input Voltage  
Max. Output  
Current  
Max. Output  
Power  
Typical  
Efficiency  
Model Number  
Active Low  
Voltage  
3.3 Vdc  
18 Vdc-75 Vdc  
10 A  
33 W  
87.5%  
0RSB-40U03B  
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.  
Part Number Explanation  
0 R SB – 40 U 03 B  
1 2  
3
4
5
6
7
1---Through hole  
2---RoHS 6, change “R” to “7” means RoHS 5  
3---Series name, 1/16 Brick  
4---Series code  
5---Input range 48V wide (18-75V)  
6---Output voltage 3.3V  
7---Option  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
1
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Absolute Maximum Ratings  
Unit  
Parameter  
Min  
-0.3  
-
Typ  
Max  
80  
Notes  
Continuous Input Voltage  
Input Transient Voltage  
Remote On/Off  
-
-
-
-
-
-
V
V
100  
18  
100 mS maximum  
-0.3  
-
V
I/O Isolation Voltage  
Ambient Temperature  
Storage Temperature  
1500  
85  
V
-40  
-55  
°C  
°C  
125  
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may  
permanently damage the device.  
Input Specifications  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Operating Input Voltage  
18  
48  
75  
V
Input Current (full load)  
Input Current (no load)  
Remote Off Input Current  
-
-
-
-
60  
1
3.0  
120  
3
A
mA  
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  
(rms)  
-
-
3
7
mA  
Input Reflected Ripple Current  
(pk-pk)  
I2t Inrush Current Transient  
Turn-on Voltage Threshold  
Turn-off Voltage Threshold  
20  
50  
mA  
-
-
0.02  
18.0  
17.6  
A2s  
V
16.0  
15.6  
17.2  
16.8  
V
CAUTION: This converter is not internally fused. An input line fuse must be used in application.  
Recommend a fast-acting fuse with maximum rating of 3A on system board. Refer to the fuse  
manufacture’s datasheet for further information.  
Note: All specifications are typical at 25 °C unless otherwise stated.  
Output Specifications  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Output Voltage Set Point  
3.25  
3.3  
3.35  
V
Vin=48V, Io=50% load  
Load Regulation  
Line Regulation  
-
-
±4  
±3  
±9  
±8  
mV  
mV  
Regulation Over Temperature  
(-40deg.C-85deg.C)  
-
±9  
±16  
mV  
0-20 MHz BW, with a 1µF ceramic  
capacitor and a 330uF Tantalum  
cap at output.  
Ripple and Noise (pk-pk)  
Ripple and Noise (rms)  
-
-
55  
12  
90  
25  
mV  
mV  
Ripple and Noise (pk-pk)  
under worst case  
over all operating input voltage,  
load and temperature conditions.  
-
-
120  
mV  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
2
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Output Specifications (continued)  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Output Current Range  
0
-
10  
A
Output DC Current Limit  
Short Circuit Surge Transient  
Rise Time  
11  
-
14  
-
16  
1
A
A2s  
mS  
mS  
mS  
-
10  
25  
25  
15  
50  
50  
-
Enable form Vin  
Turn on Time  
-
Enable form ON/OFF  
Overshoot at Turn on  
-
0
-
5
%
Output Capacitance  
330  
4700  
uF  
Transient Response  
Overshoot  
-
-
-
-
180  
80  
250  
150  
250  
150  
mV  
uS  
△V50%~75% of  
Max Load  
di/dt=0.1A/us, Vin=48Vdc, Ta=25°C,  
with a 1µF ceramic capacitor and a  
330uF Tantalum cap at the output.  
Settling Time  
Overshoot  
180  
80  
mV  
uS  
△V75%~50% of  
Max Load  
Settling Time  
Notes: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.  
General Specifications  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Vin=48V, full load  
Efficiency  
85  
87.5  
-
%
Switching Frequency  
-
500  
-
-
kHz  
V
Output Voltage Trim Range  
2.97  
3.63  
Over Temperature Protection  
Over Voltage Protection(Static)  
Weight  
-
-
-
125  
4
130  
4.9  
-
°C  
V
14  
g
Calculated Per Bell Core SR-332  
(Vin=48 V, Vo=3.3 V, Io=8 A, Ta = 25  
°C, FIT=109/MTBF)  
FIT  
TBD  
-
-
Dimensions  
Inches (L × W × H)  
1.30 x 0.90 x 0.46  
Millimeters (L × W × H)  
33.02 x 22.86 x 11.69  
Isolation characteristics  
Input to Output  
-
10M  
-
-
-
1500  
V
Isolation Resistance  
Isolation Capacitance  
ohm  
pF  
3900  
-
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  
3
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Efficiency Data  
90%  
85%  
80%  
75%  
70%  
65%  
60%  
55%  
50%  
18V  
24V  
48V  
75V  
1
2.5  
5
7.5  
10  
OUTPUT CURRENT (A)  
Thermal Derating Curves  
Maximum junction temperature of semiconductors derated to 120 degree C.  
Top View  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
4
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Thermal Derating Curves (continued)  
Derating curve under 24Vdc input  
Derating curve under 48Vdc input  
Temperature reference points on top side  
Temperature reference points on bottom side  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
5
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Ripple and Noise Waveform  
48 Vdc input, 3.3Vdc/10A output  
Note: Ripple and Noise at full load, Ta=25°C, with a 1µF ceramic capacitor and a 330uF Tantalum cap at the  
output.  
Transient Response Waveforms  
75%-50% Load Transients  
50%-75% Load Transients  
Note: Transient Response at di/dt=0.1A/uS, Ta=25°C, with 1uF ceramic cap and 330uF tantalum cap at  
output.  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
6
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Startup & Shutdown  
Rise Time  
Test Condition:  
48Vdc input, 3.3Vdc/10A  
output, and Ta=25 deg C  
Startup from on/off  
Ch1: Vo  
Ch2: on/off  
Startup from Vin  
Ch1: Vo  
Ch2: Vin  
Test Condition: 48Vdc input, 3.3Vdc/10A output  
and Ta=25 deg C  
Test Condition: 48Vdc input, 3.3Vdc/10A output  
and Ta=25 deg C  
Shutdown  
Test Condition:  
48Vdc input, 3.3Vdc/10A  
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  
7
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Remote On/Off  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Signal Low (Unit On)  
Signal High (Unit Off)  
Current Sink  
-0.3  
-
0.8  
V
Active Low  
The remote on/off pin open, Unit off.  
2.4  
0
-
-
18  
1
V
mA  
Recommended remote on/off circuit for active low  
Vin+  
On/off  
Vin-  
Vin+  
On/off  
Vin-  
Control with open collector/drain circuit  
Control with photocoupler circuit  
Vin+  
Vin+  
On/off  
Vin-  
Vcc  
On/off  
Vin-  
Control with logic circuit  
Permanently on  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
8
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Output Trim Equations  
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected  
between the Trim pin and GND pin. The Trim Up resistor should be connected between the Trim pin and the  
Vout pin. Only one of the resistors should be used for any given application.  
Minimum trim down voltage is 2.97V  
Maximum trim up voltage is 3.63V.  
The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage.  
Vout  
511  
Rtrimdown =  
−10.22  
[kΩ  
]
Module  
Module  
Trim  
GND  
delta  
Rtrimdown  
Rtrimup  
Vout  
Trim  
GND  
(100 + delta)⋅Vo⋅5.11− 626  
1.225⋅delta  
Rtrimup =  
[
−10.22 kΩ  
]
Note:  
(
)
Vo _ req −Vo  
delta =  
×100  
[%]  
Vo  
Vo_req=Desired (trimmed) output voltage [V]  
Output voltage Vo=3.308 V  
1500  
1350  
1200  
1050  
900  
750  
600  
450  
300  
150  
0
300  
270  
240  
210  
180  
150  
120  
90  
60  
30  
0
3.3 3.33 3.37 3.4 3.43 3.46 3.5 3.53 3.56 3.6 3.63  
Adjusted output voltage Vo,adj(V)  
2.64 2.71 2.77 2.84 2.9 2.97 3.04 3.1 3.17 3.23 3.3  
Adjusted output voltage Vo,adj (V)  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
9
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Remote Sense  
This module has remote sense compensation feature. It can minimizes the effects of resistance between  
moudle's output and load in system layout and facilitates accutate voltage regulation at load terminals or  
other selected point.  
1. The remote sense lines carries very little current and hence do not require a large cross-sectional area.  
2. This module compensates for a maximum drop of 10% of the nominal output voltage.  
3. If the unit is already trimmed up, the available remote sense compensation range should be  
correspondingly reduced. The total voltage increased by trim and remote sense should not exceed 10%  
of the nominal output voltage.  
4. When using remote sense compensation, all the resistance, parasitic inductance and capacitance of the  
system are incorpotated within the feedback loop of this module. The can make an effect on the  
module's compensation, affecting the stability and dynamic response. A 0.1uF ceramic capacitor can be  
connected at the point of load to de-couple noise on the sense wires.  
5. Recommend the connection of remote sense compensation as below figure. There are a resistor RS+  
(100 ohm) from Vo+ to Sense+ and a resistor RS- (51 ohm)) from Vo- to Sense- inside of this module.  
Vo+  
Sense+  
Load  
Sense-  
Vo-  
6. If not using remote sense compensation, please connect sense directly to output at module's pin, that is,  
connect sense+ to Vo+ and sense- to Vo- at module's pin, the shorter the better. See below figure.  
Vo+  
Sense+  
Load  
Sense-  
Vo-  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
10  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Over Current Protection  
To provide protection in a fault output overload condition, the module is equipped with internal current-limiting  
circuitry and can endure current limiting for a few mili-seconds. If the overcurrent condition persists beyond a few  
milliseconds, the module will shut down into hiccup mode and restart once every 400mS. The module operates  
normally when the output current goes into specified range. The typical average output current is 1A during  
hiccup.  
48Vin  
24Vin  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
11  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Over Temperature Protection  
The OTP is achieved by thermistor R65 and the threshold is set at 120C in non-latch mode; the hottest  
component Q5 reaches 130C with 100LFM air flow correspondingly. It will restart automatically when the  
temperature falls down to 110C. The protecting point will be varied a little under different conditions (air flow,  
ambient temperature, input voltage, load...).  
The hottest component on the top side: Q5  
Input Under-voltage Lockout  
Under-voltage Lockout  
The thermistor on the bottom side: R65  
Voltage Falling  
V1=16.8V  
V2=17.2V  
Voltage Rising  
Input Voltage (V)  
V1  
V2  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
12  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Mechanical Outline  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Pin Connections  
Pin  
Function  
Pin Size  
1
Vin+  
0.040’’  
2
3
4
5
6
7
8
On/Off  
Vin-  
0.040’’  
0.040’’  
0.062’’  
0.040’’  
0.040’’  
0.040’’  
0.062’’  
Vout-  
SENSE(-)  
TRIM  
SENSE(+)  
Vout+  
Note: This module is recommended and compatible with Pb-Free Wave Soldering and must be soldered  
using a peak solder temperature of no more than 260ºC for less than 5 seconds.  
Note:  
1) All Pins: Material - Copper Alloy;  
Finish – 3 micro inches minimum Gold over 50 micro inches minimum Nickel plate.  
2) Undimensioned components are shown for visual reference only.  
3) All dimensions in inches (mm); Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm).  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
13  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick  
Jun. 17, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Revision History  
Date  
Revision  
Changes Detail  
Approval  
First release  
2010-6-17  
A
JZ Wang  
RoHS Compliance  
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and  
other hazardous substances from electronic products.  
©2010 Bel Fuse Inc. Specifications subject to change without notice. 061710  
14  
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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