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0RQB-Q8S12LG

型号：

0RQB-Q8S12LG

品牌：

BEL[ BEL FUSE INC. ]

页数：

10 页

PDF大小：

201 K

下载PDF手册
ISOLATED DC/DC CONVERTERS  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.  
0RQB-Q8S12x RoHS Compliant PRELIMINARY Rev.B  
Features  
Isolated  
Input Under-voltage Protection  
Output Over-voltage Protection  
OCP/SCP  
High Efficiency  
Fixed Frequency (300 KHz)  
High Power Density  
Low Cost  
Over Temperature Protection  
Remote ON/OFF  
Class 2, Category 2, Isolated DC/DC Converter (refer to IPC-9592)  
Applications  
Networking  
Computers and peripherals  
Telecommunications  
Description  
The 0RQB-Q8S12x is an isolated dc/dc converter that operates from a nominal 50 Vdc source. This converter is  
intended to provide isolation and step down to generate a regulated intermediate bus for the purpose of powering  
non-isolated Point-of-Load (POL) converters. This unit will provide up to 480 W of output power from a nominal  
50 Vdc input.  
Part Selection  
Output Voltage  
Input Voltage  
Max. Output Max. Output  
Typical  
Efficiency  
Model Number  
Active Low  
Model Number  
Active High  
Current  
Power  
12 Vdc  
38 Vdc - 55 Vdc  
40 A  
480 W  
96.7%  
0RQB-Q8S12L  
0RQB-Q8S120  
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.  
Part Number Explanation  
0 R QB – Q8 S 12 x  
1
2
3
4
5
6 7  
1---Through hole mount  
2---RoHS 6, change “R” to “7” means RoHS 5  
3---Series name  
4---Series code  
5---Input range (38-55V)  
6---Output voltage (12V)  
7---Option, “x” of the model part number to be 0-9, A-Z, which will represent the special request of  
customer.  
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  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.  
Absolute Maximum Ratings  
Unit  
Parameter  
Min  
Typ  
Max  
Notes  
Continuous non-operating Input  
Voltage  
-0.3  
-
60  
V
Remote On/Off  
-0.3  
-40  
-55  
-
-
-
10  
85  
V
Ambient Temperature  
Storage Temperature  
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  
38  
50  
55  
V
Input Current (full load)  
Input Current (no load)  
Remote Off Input Current  
-
-
-
-
140  
4
12.5  
200  
8
A
mA  
mA  
Input Reflected Ripple Current  
(rms)  
-
-
450  
1.6  
600  
2.4  
mA  
Input Reflected Ripple Current  
(pk-pk)  
A
I2t Inrush Current Transient  
Turn-on Voltage Threshold  
Turn-off Voltage Threshold  
-
-
1
A2s  
V
34  
32  
35.5  
33.5  
37  
35  
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 20A 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  
Please see the figure about Vo set  
point below.  
12  
Vin  
4
Vin＞49V  
Vin≤49V  
-
-
-
-
V
V
Load Regulation  
Vin=38-49V  
Vin=49-55V  
-
-
0.4  
30  
0.7  
50  
V
mV  
Io=0~100% load  
Io=100% load  
Line Regulation  
Vin=38-49V  
Vin=49-55V  
-
-
2.7  
25  
3.5  
40  
V
mV  
Output Ripple and Noise (pk-pk)  
Output Ripple and Noise (rms)  
-
-
50  
10  
150  
30  
mV  
mV  
Vin=50V, Io=100%load, 0-20MHz  
BW, with a 1µF ceramic capacitor  
and a 10uF TAN cap at output.  
Ripple and Noise (pk-pk)  
under worst case  
Over all operating input voltage, load  
and ambient temperature condition.  
-
-
200  
mV  
Output Current Range  
Vin=38V  
Vin=48V  
Vin=55V  
0
0
0
-
-
-
40  
40  
40  
A
A
A
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  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.  
Output Specifications (continued)  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Output DC Current Limit  
48  
52  
56  
A
Vin=50V  
Short Circuit Surge Transient  
Rise time  
-
-
-
-
2
15  
A2s  
mS  
mS  
mS  
%
-
30  
30  
0
35  
Enable from Vin  
Turn on Time  
-
35  
Enable from ON/OFF  
Overshoot at Turn on  
-
3
Output Capacitance  
0
-
6000  
uF  
Transient Response  
△V  
50%~75%  
of Max Load  
Overshoot  
Settling Time  
Overshoot  
-
250  
100  
250  
100  
350  
200  
350  
200  
mV  
uS  
di/dt=1A/us, Vin=50Vdc, Ta=25°C,  
with a 1µF ceramic capacitor and a  
100uF AL. cap at output.  
-
-
-
Vo=  
12 V  
△V  
75%~50%  
of Max Load  
mV  
uS  
Settling Time  
Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.  
Vo vs Vin  
12.5  
12  
11.5  
11  
0A  
20A  
40A  
10.5  
10  
9.5  
9
8.5  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
52  
55  
Vin(V)  
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  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.  
General Specifications  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Vin=50V, full load  
Efficiency  
94.7  
96.7  
-
%
Switching Frequency  
Over Temperature Protection  
Over Voltage Protection  
Weight  
280  
300  
125  
-
320  
kHz  
℃
V
-
-
-
-
14  
-
65  
g
Calculated Per Bell Core SR-332  
(Vin=50 V, Vo=12 V, Io=32 A, Ta =  
25C, FIT=109/MTBF)  
FIT  
161  
-
Isolation characteristics  
Input to Output  
-
10M  
-
-
-
1500  
V
Isolation Resistance  
Isolation Capacitance  
-
-
Ohm  
pF  
2700  
Note: All specifications are typical at 25 C unless otherwise stated.  
Efficiency Data  
0.98  
0.96  
0.94  
0.92  
0.9  
38V  
48V  
55 V  
0.88  
0.86  
0.84  
0.82  
0.8  
5A  
10A  
20A  
30A  
40A  
OUTPUT CURRENT(A)  
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  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
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)  
Signal Low (Unit Off)  
Signal High (Unit On)  
Current Sink  
-0.3  
-
0.8  
V
0RQB-Q8S12L  
The remote on/off pin open, Unit off.  
Active Low  
Active High  
2.4  
-0.3  
2.4  
0
-
-
-
-
10  
0.8  
10  
V
V
0RQB-Q8S120  
The remote on/off pin open, Unit on.  
V
0.3  
mA  
Recommended remote on/off circuit for active low  
Vin+  
Vin+  
On/off  
Vin-  
On/off  
Vin-  
Control with open collector/drain circuit  
Control with photocoupler circuit  
Vin+  
Vin+  
Vcc  
On/off  
On/off  
Vin-  
Vin-  
Control with logic circuit  
Permanently on  
Recommended remote on/off circuit for active high  
Vin+  
Vin+  
On/off  
On/off  
Vin-  
Vin-  
Control with open collector/drain circuit  
Control with photocoupler circuit  
Vin+  
Vin+  
Vcc  
On/off  
On/off  
Vin-  
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  
5
ISOLATED DC/DC CONVERTERS  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
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 over current 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 3.8A during  
hiccup.  
CH1: Output Voltage  
CH1: Output Voltage  
CH2: Output Current Waveform  
Test condition: Vin=50V  
CH2: Output Current Waveform  
Expansion of on time portion of above figure  
Ripple and Noise Waveform  
50Vdc input, 12Vdc/40A output  
Note: Ripple and noise at full load, with a 1uF ceramic cap and a 10uF Tan cap at output, 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  
6
ISOLATED DC/DC CONVERTERS  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.  
Input Under-voltage Lockout  
Under-voltage Lockout  
Voltage Falling  
V1=33.5V  
V2=35.5V  
Voltage Rising  
Input Voltage (V)  
V1  
V2  
Transient Response Waveforms  
Vin= 50V 50%-75% Load Transients  
Vin= 50V 75%-50% Load Transients  
Note: Transient Response at di/dt=1A/uS, with a 1µF ceramic capacitor and a 100uF AL. cap at output, 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  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.  
Thermal Derating Curve  
Maximum junction temperature of semiconductors derated to 120 degree C.  
AIR FLOW  
Bottom view  
The OTP is achieved by temperature sensor U10 and it is in non-latch mode when the hottest component Q9  
reaches 125C with 200LFM air flow correspondingly. It will restart automatically when the temperature falls down  
to 105C. The protecting point will be varied a little under different conditions (air flow, ambient temperature, input  
voltage, load...).  
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  
8
ISOLATED DC/DC CONVERTERS  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Aug. 19, 2011  
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.  
Mechanical Outline  
Pin  
1
Function  
Vin(+)  
Dia.  
Length  
0.145’’  
0.145’’  
0.145’’  
0.145’’  
0.145’’  
0.04’’  
0.04’’  
0.04’’  
0.06’’  
0.06’’  
2
Remote  
Vin(-)  
3
4
Vout(-)  
Vout(+)  
5
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 260 ºC 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  
9
ISOLATED DC/DC CONVERTERS  
38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output  
Jul. 7, 2011  
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.  
Revision History  
Date  
Revision  
Changes Detail  
Approval  
YF Sun  
XJ Sun  
2011-07-07  
2011-08-19  
PA  
PB  
First release  
Updated mechanical outline  
RoHS Compliance  
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and  
other hazardous substances from electronic products.  
2011 Bel Fuse Inc. Specifications subject to change without notice. 081911  
10  
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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