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0RSB-50T12LG

P1-P3P4-P6P7-P9P10-P12P13-P13
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 1.5 Vdc - 12 Vdc / 22 A - 5 A Outputs, 1/16 Brick
Apr. 12, 2010 Bel Power Inc., a subsidiary of Bel Fuse Inc.
• Isolated • Input Under Voltage Lockout
• Fixed Frequency (600 kHz) • Output Over Voltage Shutdown
• High Efficiency • OCP/SCP
• High Power Density • Over Temperature Protection
• Low Cost • Remote On/Off (option)
• Output Voltage Trim • Positive/Negative Remote Sense
• Basic Insulation • Through Hole and SMT (option)
• UL60950-1 Recognized (UL/cUL)
Description
The xRSB-50T series are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will
provide up to 60 W of output power from a nominal 48 Vdc input. These units are designed to be highly efficient
and low cost. Features include remote on/off, over current protection and under voltage lockout. These converters
are provided in an industry standard sixteenth brick package.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active Low
Model Number
Active High
1.5 V 36 V - 75 V 22 A 33 W 85% xRSB-50TV5L xRSB-50TV50
1.8 V 36 V - 75 V 20 A 36 W 87% xRSB-50TV8L xRSB-50TV80
2.5 V 36 V - 75 V 18 A 45 W 87% xRSB-50T02L xRSB-50T025
3.3 V 36 V - 75 V 15 A 50 W 89% xRSB-50T03L xRSB-50T033
5.0 V 36 V - 75 V 12 A 60 W 90% xRSB-50T05L xRSB-50T050
12 V 36 V - 75 V 5 A 60 W 89% xRSB-50T12L xRSB-50T120
Notes: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging. Replace”x” with “S” to
indicate SMT package, or “0” to indicate through hole package.
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
Input Voltage Transient (100 ms) -0.3 V 100 V
Remote On/Off -0.3 V - 18 V
I/O Isolation Voltage - - 1500 V
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-55 °C
-
125 °C
xRSB-50T Series RoHS Com
p
liant Rev.F
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 1.5 Vdc - 12 Vdc / 22 A - 5 A Outputs, 1/16 Brick
Apr. 12, 2010 Bel Power Inc., a subsidiary of Bel Fuse Inc.
Input Specifications
Parameter Min Typ Max Notes
Input Voltage 36 V 48 V 75 V
Input Current (full load) - - 2.4 A
Input Current (no load) - 70 mA 120 mA
Remote Off Input Current - 1 mA 3 mA
Input Reflected Ripple Current (pk-pk) - 20 mA 50 mA
Input Reflected Ripple Current (rms) - 3 mA 7 mA
Tested with simulated source impedance of
15 uH, 5 Hz to 20 MHz; use a 100 uF/100 V
electrolytic capacitor with ESR=1 ohm max
at 200 kHz at the input.
I
2
t Inrush Current Transient - 0.01 A
2
s0.02 A
2
s
Turn On Voltage Threshold 31 V 32 V 35 V
Turn Off Voltage Threshold 30 V 31 V 34 V
Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.
Output Specifications
Parameter Min Typ Max Notes
Output Voltage Set Point
Vo=1.5 V
Vo=1.8 V
Vo=2.5 V
Vo=3.3 V
Vo=5.0 V
Vo=12 V
1.478 V
1.773 V
2.463 V
3.250 V
4.925 V
11.750 V
1.5 V
1.8 V
2.5 V
3.3 V
5.0 V
12.0 V
1.523 V
1.827 V
2.538 V
3.350 V
5.075 V
12.250 V
Test conditions:
Vin=48 V; Io=50%
load
Line Regulation
Vo=1.5 - 1.8 V
Vo=2.5 V
Vo=3.3 V
Vo=5.0 V
Vo=12 V
-
-
-
-
-
±0.5 mV
±1 mV
±3 mV
±4 mV
±10 mV
±3 mV
±6 mV
±8 mV
±9 mV
±25 mV
Load Regulation
Vo=1.5 - 2.5 V
Vo=3.3 - 5.0 V
Vo=12 V
-
-
-
±3 mV
±4 mV
±9 mV
±5 mV
±9 mV
±18 mV
Regulation Over Temperature(-40 °C to +85 °C)
Vo=1.5 - 1.8 V
Vo=2.5 - 3.3 V
Vo=5.0 V
Vo=12 V
-
-
-
-
±6 mV
±9 mV
±15 mV
±20 mV
±14 mV
±16 mV
±30 mV
±35 mV
Output Current
Vo=1.5 V
Vo=1.8 V
Vo=2.5 V
Vo=3.3 V
Vo=5.0 V
Vo=12 V
0 A
0 A
0 A
0 A
0 A
0 A
-
-
-
-
-
-
22 A
20 A
18 A
15 A
12 A
5 A
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 1.5 Vdc - 12 Vdc / 22 A - 5 A Outputs, 1/16 Brick
Apr. 12, 2010 Bel Power Inc., a subsidiary of Bel Fuse Inc.
Output Specifications (continued)
Parameter Min Typ Max Notes
Current Limit Threshold
Vo=1.5 V
Vo=1.8 V
Vo=2.5 V
Vo=3.3 V
Vo=5.0 V
Vo=12 V
28 A
24 A
22 A
19 A
14 A
5.2 A
34 A
28 A
26 A
22 A
19 A
6.5 A
40 A
34 A
30 A
26 A
24 A
8.5 A
Short Circuit Surge Transient - 0.5 A
2
s 1 A
2
s
Ripple and Noise (rms)
Vo=1.5 - 1.8 V
Vo=2.5 V
Vo=3.3 V
Vo=5.0 V
Vo=12 V
-
-
-
-
-
6 mV
10 mV
12 mV
25 mV
30 mV
12 mV
20 mV
25 mV
50 mV
55 mV
Ripple and Noise (pk-pk)
Vo=1.5 - 1.8 V
Vo=2.5 V
Vo=3.3 V
Vo=5.0 V
Vo=12 V
-
-
-
-
-
40 mV
45 mV
55 mV
70 mV
90 mV
70 mV
80 mV
90 mV
120 mV
180 mV
Tested at 0-20 MHz
BW, with a 1 uF
ceramic capacitor and
a Tantalum capacitor
(refer to the min.
output capacitance
below for each output)
at the output.
Turn on Time - 35 mS 70 mS
Overshoot at Turn on - 0% 5%
Output Capacitance
Vo=1.5 V
Vo=1.8 - 2.5 V
Vo=3.3 V
Vo=5.0 V
Vo=12 V
470 uF
470 uF
220 uF
100 uF
22 uF
-
-
-
-
-
15000 uF
10000 uF
5600 uF
4700 uF
470 uF
Recommend to use
AVX TPS series
Tantalum capacitor as
the min capacitor
Transient Response
Overshoot - 110 mV 150 mV
25% ~ 50%
Max Load
Settling Time - 110 uS
180 uS
Overshoot - 110 mV 150 mV
50% ~ 25%
Max Load
Settling Time
Vo=1.5 - 1.8 V
- 110 uS
180 uS
Overshoot - 150 mV 250 mV
25% ~ 50%
Max Load
Settling Time - 120 uS
200 uS
Overshoot - 150 mV 250 mV
50% ~ 25%
Max Load
Settling Time
Vo=2.5 - 3.3 V
- 120 uS
200 uS
Overshoot - 220 mV 350 mV
25% ~ 50%
Max Load
Settling Time - 120 uS
250 uS
Overshoot - 220 mV 350 mV
50% ~ 25%
Max Load
Settling Time
Vo=5.0 V
- 120 uS
250 uS
Overshoot - 400 mV 650 mV
25% ~ 50%
Max Load
Settling Time - 150 uS
300 uS
Overshoot - 400 mV 650 mV
50% ~ 25%
Max Load
Settling Time
Vo=12 V
- 150 uS
300 uS
Test conditions: di/dt
= 0.1 A/uS, Vin=48 V,
with a 1uF ceramic
capacitor and a
Tantalum capacitor
(refer to the min.
output capacitance
above for each
output) at the output.
Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.
P1-P3P4-P6P7-P9P10-P12P13-P13

0RSB-50T12LG

Mfr. #:
Buy 0RSB-50T12LG
Manufacturer:
Stewart Connector / Bel
Description:
Isolated DC/DC Converters Power
Lifecycle:
New from this manufacturer.
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