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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
• Isolated • Output Over Voltage Shutdown
• High Efficiency • OCP/SCP
• High Power Density • Over Temperature Protection
• Low Cost • Remote On/Off
• Input Under Voltage Lockout • Output Voltage Trim
• Fixed Frequency (330 kHz)
• Active Low/High (Option)
• UL60950-1 Recognized (UL/cUL)
• Positive/Negative Remote Sense
• Input Over Voltage Lockout
• Basic Isolation
Description
The 0RQB-C5T Series are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will
provide up to 150 W of output power from a nominal 48 Vdc input. These units are designed to be highly efficient
and low cost. Typical efficiency of 12 Vdc output at 48 Vdc input at full load is 93%. Features include remote
on/off, over current protection and under-voltage lockout. These converters are provided in an industry standard
quarter brick package.
Part Selection
Output
Voltage Input
Voltage Max. Output
Current Max. Output
Power Typical
Efficiency Model Number
Active High Model Number
Active Low
12 V 36 V - 75 V 12 A 144 W 93.0% 0RQB-C5T120 0RQB-C5T12L
5.0 V 36 V - 75 V 30 A 150 W 92.5% 0RQB-C5T050 0RQB-C5T05L
3.3 V 36 V - 75 V 46 A 152 W 91.0% 0RQB-C5T033 0RQB-C5T03L
2.5 V 36 V - 75 V 50 A 125 W 90.5% 0RQB-C5T025 0RQB-C5T02L
1.8 V 36 V - 75 V 50 A 90 W 88.0% 0RQB-C5TV80 0RQB-C5TV8L
1.5 V 36 V - 75 V 50 A 75 W 85.0% 0RQB-C5TV50 0RQB-C5TV5L
1.2 V 36 V - 75 V 50 A 60 W 83.0% 0RQB-C5TV20 0RQB-C5TV2L
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 - - 2000 V
Ambient Temperature -40 °C - 85 °C
Storage Temperature -55 °C - 125 °C
Note: All specifications are typical at nominal input, full load at 25 °C unless noted.
0RQB-C5T Series RoHS Compliant Rev.B
bel
POWER PRDDUC TS
Eal Fuse Inc. 206 Van Vars‘ SIreeL Jersey thy‘ NJ 07302 - Te‘ 201—432-0463 . Fax 201-432-9542 . www.belluse.com
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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Input Specifications
Parameter Min Typ Max Notes
Input Voltage 36 V 48 V 75 V
Input Current (full load)
VO=12 V
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4.5 A
4.9 A
4.9 A
4.1 A
3.0 A
2.6 A
2.1 A
Input Current (no load) - 120 mA 180 mA
Remote Off Input Current 10 mA 15 mA
Input Reflected Ripple Current (pk-pk) - 10 mA 15 mA
Input Reflected Ripple Current (rms) - 1.5 mA 3 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.
I2t Inrush Current Transient - 0.05 A2s0.1 A
2s
Turn-on Voltage Threshold 32 V 34 V 35 V
Turn-off Voltage Threshold 30 V 32 V 34 V
Input over voltage Lockout 76 V 78 V 80 V
Note: All specifications are typical at nominal input, full load at 25 °C unless noted.
Output Specifications
Parameter Min Typ Max Notes
Output Voltage Set Point
VO=12 V
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
11.790 V
4.925 V
3.260 V
2.450 V
1.770 V
1.477 V
1.176 V
12.030 V
5.004 V
3.308 V
2.503 V
1.808 V
1.500 V
1.200 V
12.270 V
5.075 V
3.360 V
2.550 V
1.844 V
1.523 V
1.224 V
Vin=48 V, Io=50% full load
Output Voltage Set Point -3.5%Vo,set - 3.5%Vo,set
Over all operating input voltage,
resistive load, and temperature
conditions.
Line Regulation
VO=12 V
VO=5.0 V
VO=1.2 V-3.3 V
-
-
-
±8 mV
±5 mV
±3 mV
±15 mV
±15 mV
±6 mV
Load Regulation
VO=5.0 V-12 V
VO=2.5 V-3.3 V
VO=1.2 V-1.8 V
-
-
-
±10 mV
±5 mV
±2 mV
±20 mV
±10 mV
±5 mV
Regulation Over Temperature
(-40 °C to +85 °C) VO=12
V
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V-1.2 V
-
-
-
-
-
±60 mV
±40 mV
±30 mV
±20 mV
±15 mV
±100 mV
±65 mV
±50 mV
±40 mV
±30 mV
Output Current
Vo=12 V
Vo=5.0 V
Vo=3.3 V
Vo=1.2 V-2.5 V
0 A
0 A
0 A
0 A
-
-
-
-
12 A
30 A
46 A
50 A
bel
POW E R P
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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Output Specifications (continued)
Parameter Min Typ Max Notes
Current Limit Threshold
VO=12 V
VO=5.0 V
VO=3.3 V
VO=1.2 V-2.5 V
14 A
35 A
50 A
55 A
15.5 A
40 A
60 A
60 A
18 A
45 A
65 A
65 A
Short Circuit Surge Transient - 3 A2s 5 A2s
Ripple and Noise (rms)
VO=12 V
VO=5.0 V
VO=3.3 V
VO=1.2 V-2.5 V
-
-
-
-
25 mV
20 mV
20 mV
15 mV
30 mV
25 mV
20 mV
20 mV
Ripple and Noise (pk-pk)
VO=12 V
VO=5.0 V
VO=3.3 V
VO=1.8 V
Vo=2.5 V
VO=1.5 V
VO=1.2 V
-
-
-
-
-
-
70 mV
60 mV
50 mV
45 mV
40 mV
55 mV
40 mV
90 mV
80 mV
70 mV
60 mV
60 mV
70 mV
60 mV
Test conditions:
0-20 MHz BW, with a 1
uF ceramic capacitor and
a 10 uF Tantalum
capacitor at the output.
Turn on Time 10 mS - 100 mS
Overshoot at Turn on - 0% 5%
Output Capacitance
VO=12.0 V
VO=5.0 V
VO=1.2 V-3.3 V
0 uF
0 uF
0 uF
-
-
-
2200 uF
10000 uF
20000 uF
Transient Response
Overshoot - 600 mV 800 mV
50% ~ 75%
Max Load Settling Time - 200 uS 300 uS
Overshoot - 600 mV 800 mV
75% ~ 50%
Max Load Settling Time
VO=12.0 V
- 200 uS 300 uS
Overshoot - 250 mV 375 mV
50% ~ 75%
Max Load Settling Time - 100 uS 200 uS
Overshoot - 250 mV 375 mV
75% ~ 50%
Max Load Settling Time
VO=5.0 V
- 100 uS 200 uS
Overshoot - 100 mV 200 mV
50% ~ 75%
Max Load Settling Time - 200 uS 300 uS
Overshoot - 100 mV 200 mV
75% ~ 50%
Max Load Settling Time
VO=3.3 V
- 200 uS 300 uS
Overshoot - 100 mV 200 mV
50% ~ 75%
Max Load Settling Time - 300 uS 400 uS
Overshoot - 100 mV 200 mV
75% ~ 50%
Max Load Settling Time
VO=2.5 V
- 300 uS 400 uS
Overshoot - 100 mV 140 mV
50% ~ 75%
Max Load Settling Time - 200 uS 300 uS
Overshoot - 100 mV 140 mV
75% ~ 50%
Max Load Settling Time
Vo=1.8 V
VO=1.5 V
- 200 uS 300 uS
Overshoot - 100 mV 120 mV
50% ~ 75%
Max Load Settling Time - 200 uS 300 uS
Overshoot - 100 mV 120 mV
75% ~ 50%
Max Load Settling Time
VO=1.2 V
- 200 uS 300 uS
Test conditions: di/dt =
0.1 A/uS, Vin=48 V, with
a 1 uF ceramic capacitor
and a 10 uF Tantalum
capacitor at the output.
Note: All specifications are typical at nominal input, full load at 25 °C unless noted.
bel
POWER P v; ,w
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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
General Specifications
Parameter Min Typ Max Notes
Efficiency
VO=12 V
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
90%
89%
88%
87%
85%
82%
80%
93%
92.5%
91%
90.5%
88%
85%
83%
-
-
-
-
-
-
-
Vin=48 V, full load , Ta=25 °C
Switching Frequency 280 kHz 330 kHz 380 kHz
Isolation capacitance - 1500 pF -
Input to Output Isolation Voltage - - 2000 V
Remote Sense Compesation - - 10% Vo
Output Voltage Trim Range 80% Vo - 110% Vo
The total voltage increased by trim and
remote sense should not exceed
10%Vo.
Over Temperature Protection - 125 °C -
Over Voltage Protection - 130% Vo - Vin=48V, full load, Hiccup mode
MTBF 1,109,917 hours
Calculated Per Bell Core SR-332 (IO
=80% load, Vin=48 V, Vo=3.3 V; Ta =
25 °C)
Dimensions
Inches
millimeters
2.30 x 1.45 x 0.395
58.42 x 36.83 x 10.03
Weight - 41 g -
Note: All specifications are typical at nominal input, full load at 25 °C unless noted.
Control Specifications
Parameter Min Typ Max Notes
Remote On/Off
Signal Low (Unit On) -0.3 V - 0.8 V
Signal High (Unit Off)
Active Low
2.4 V - 18 V
0RQB-C5TxxL. The remote
on/off pin open, Unit off.
Signal Low (Unit Off) -0.3 V - 0.8 V
Signal High (Unit On)
Active High
2.4 V - 18 V
0RQB-C5Txx0. The remote
on/off pin open, Unit on.
Current Sink 0 mA - 0.75 mA
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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Output Trim Equations
Equations for calculating the trim resistor are shown below (Unit: kΩ). 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.
1) For Vo=1.5 V – 12 V:
Note:
Vo_req=Desired (trimmed) output voltage [V]; Vo=output voltage
Vo=12.004 V for 12 V output; Vo=5 V for 5.004 V output; Vo=3.308 V for 3.3 V output; Vo=2.503 V for 2.5 V
output; Vo=1.808 V for 1.8 V output; Vo=1.503 V for 1.5 V output
2) For Vo=1.2 V:
Note:
Vo_req=Desired (trimmed) output voltage [V]; Vo=output voltage
Vo=1.202 V for 1.2 V output
22.10
225.1
62611.5)100( −
⋅
−⋅
⋅
+
=delta
Vodelta
Rtrimup
22.10
511 −= delta
Rtrimdown
()
[]
%100
_×
−
=Vo
VoreqVo
delta
Module
Vout
Trim
GND Rtrimdow
n
Module
Vout
Trim
GND
Rtrimup
22.10
6125.0
31311.5)100( −
⋅
−
⋅
⋅
+
=delta
Vodelta
Rtrimup
22.10
511 −= delta
Rtrimdown
()
[]
%100
_×
−
=Vo
VoreqVo
delta
bel
POWER PRL ,w '
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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Efficiency Data
50.0%
55.0%
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
5.00 12.50 25.00 37.50 50.00
OUTPUT CURRENT(A)
EFFICIENCY
36 V
48 V
75
V
50.0%
55.0%
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
5.00 12.50 25.00 37.50 50.00
OUTPUT CURRENT(A)
EFFICIENCY
36 V
48 V
75
V
0RQB-C5TV2x 0RQB-C5TV5x
70%
75%
80%
85%
90%
95%
5 13253850
OUTPUT CURRENT (A)
EFFICIENCY
36 V
48 V
75 V
70%
75%
80%
85%
90%
95%
5 13253850
OUTPUT CURRENT (A)
EFFICIENCY
36 V
48 V
75 V
0RQB-C5TV8x 0RQB-C5T02x
70%
75%
80%
85%
90%
95%
5 11233446
OUTPUT CURRENT (A)
EFFICIENCY
36 V
48 V
75 V
70%
75%
80%
85%
90%
95%
3 8 15 23 30
OUTPUT CURRENT (A)
EFFICIENCY
36 V
48 V
75 V
0RQB-C5T03x 0RQB-C5T05x
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Eal Fuse Inc. 206 Van Vars‘ sheen Jersey thy‘ NJ 07302 - Te‘ 201-432-0463 - Fax 201-432-9542 - www.belluse.com
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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Efficiency Data (continued)
70%
75%
80%
85%
90%
95%
136912
OUTPUT CURRENT (A)
EFFICIENCY
36 V
48 V
75 V
0RQB-C5T12x
Thermal Derating Curves
Vin=48V, with maximum junction temperature of semiconductors derated to 120 degree C.
0RQB-C5Txxx 0RQB-C5T12x
0RQB-C5T05x 0RQB-C5T03x
\ u-m, , ,m
ORQB-CSTVSX ORQB-CSTV
Thermal Reference
Note: Tm, Tm, THa and TH. are hot spots which should not exceed 11
Eel Fuse Inc. 206 Van Vars‘ Sheen, Jelsey thy‘ NJ 07302 - Te‘ 201-432-0463 -
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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Thermal Derating Curves (continued)
0RQB-C5T02x 0RQB-C5TV8x
0RQB-C5TV5x 0RQB-C5TV2x
Thermal Reference
Note: TH1, TH2, TH3 and TH4 are hot spots which should not exceed 115 degree C.
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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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Ripple and Noise Waveforms
Ripple and noise at full load, 1.2 V/50 A output Ripple and noise at full load, 1.5 V/50 A output
Ripple and noise at full load, 1.8 V/50 A output Ripple and noise at full load, 2.5 V/45 A output
Ripple and noise at full load, 3.3 V/46 A output Ripple and noise at full load, 5.0 V/30 A output
Ripple and noise at full load, 12 V/12 A output
Note: Ripple and noise is tested with a 1 uF ceramic cap and a 10 uF tantalum capat output, Ta=25 deg C.
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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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Transient Response Waveforms
Vout= 1.2 V 50%-75% Load Transients Vout= 1.2 V 75%-50% Load Transients
Vout= 1.5 V 50%-75% Load Transients Vout= 1.5 V 75%-50% Load Transients
Vout= 1.8 V 50%-75% Load Transients Vout= 1.8 V 75%-50% Load Transients
Vout= 2.5 V 50%-75% Load Transients Vout= 2.5 V 75%-50% Load Transients
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Eel Fuse Inc. 206 Van Vurs‘ SIreeL Jersey thy‘ NJ
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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 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A Outputs
Transient Response Waveforms (continued)
Vout= 3.3 V 50%-75% Load Transients Vout= 3.3 V 75%-50% Load Transients
Vout= 5.0 V 50%-75% Load Transients Vout= 5.0 V 75%-50% Load Transients
Vout= 12 V 50%-75% Load Transients Vout= 12 V 75%-50% Load Transients
Note: Transient response at Vin=48 V, di/dt = 0.1 A/uS, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the
output, Ta=25 deg C.
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Function
Vin (+) 0.04"
2 Remote On/Off 0.04"
3 Vin (—) 0.04"
4 Vout (—) 0.062"
5 Remote Sense (-) 0.04"
6 Trim 0.04"
7 Remote Sense (+) 0.04"
8 Vout (+) 0.062"
RoHS Compliance
other hazardous substances from electronic products.
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
CORPORATE FAR EAST
Eel Fuse Inc. Bel Fuse Ltd.
206 Van Vorst street 8F] 5 Luk Hop street
Jersey City, NJ 07302 San Pa Kong
Tel 201-432—0463 Kowloon, Hong Kong
Fax 201432-9542 Tel 552-2323-5515
wwwoetlusemrn Fax 852-2352-3706
www.belftt m
EUROPE
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Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane. Sulte 67‘ Preston
Lancashlre. PR1 sun, UK.
Tel 44-1772-556601
Fax 44-1772-553366
wwwtzelluseoom
©
2008 Bel Fuse Inc. Specifications subject to change without notice. 012508
CORPORATE FAR EAST EUROPE
Bel Fuse Inc. Bel Fuse Ltd. Bel Fuse Europe Ltd.
206 Van Vorst Street 8F/ 8 Luk Hop Street Preston Technology Management Centre
Jersey City, NJ 07302 San Po Kong Marsh Lane, Suite G7, Preston
Tel 201-432-0463 Kowloon, Hong Kong Lancashire, PR1 8UD, U.K.
Fax 201-432-9542 Tel 852-2328-5515 Tel 44-1772-556601
www.belfuse.com Fax 852-2352-3706 Fax 44-1772-888366
www.belfuse.com www.belfuse.com
ISOLATED DC/DC CONVERTERS
48 Vdc Input 12 Vdc/12 A, 3.3 Vdc/46 A, 5 Vdc/30 A, 1.2-2.5 Vdc/50 A utputs
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.
Pin Connections
Pin Function Pin Size
1 Vin (+) 0.04"
2 Remote On/Off 0.04"
3 Vin (-) 0.04"
4 Vout (-) 0.062"
5 Remote Sense (-) 0.04"
6 Trim 0.04"
7 Remote Sense (+) 0.04"
8 Vout (+) 0.062"
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