XRSB-50T03C Datasheet, PDF (2/15 Pages) Bel Fuse Inc. – ISOLATED DC/DC CONVERTERS

ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input,
3.3 Vdc/15 A Output
Jul. 09, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Unit
Notes
Continuous non-operating Input
Voltage
-0.3
-
80
V
Input Transient Voltage
-
-
100
V 100mS maximum
Remote On/Off
-0.3
-
18
V
I/O Isolation Voltage
-
-
1500
V
Ambient Temperature
-40
-
85
°C
Storage Temperature
-55
-
125
°C
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may
permanently damage the device.
Input Specifications
Parameter
Operating Input Voltage
Min
Typ
Max Unit
36
48
75
V
Notes
Input Current (full load)
-
-
2
A
Input Current (no load)
-
70
120
mA
Remote Off Input Current
-
1
3
mA
Input Reflected Ripple Current
(rms)
-
Input Reflected Ripple Current
(pk-pk)
-
I²t Inrush Current Transient
-
3
7
mA ^{With simulated source impedance of}
10uH, 5Hz to 20MHz; use a
100uF/100V electrolytic capacitor with
20
50
mA _{ESR=1 ohm max, at 200 kHz.}
-
0.02
A²s
Turn-on Voltage Threshold
-
32
35
V
Turn-off Voltage Threshold
30
31
-
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 5A on system board. Refer to the fuse
manufacture’s datasheet for further information.
Notes: 1. This converter has internal L-C (1.0uH-1.0uF) filter.
2. All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Min
Typ
Max
Unit
Notes
Output Voltage Set Point
3.25
3.30
3.35
V
Vin=48 V, Io=50%Load
Load Regulation
-
±4
±9
mV
Line Regulation
-
±3
±8
mV
Regulation Over Temperature
(-40deg.C-85deg.C)
-
Ripple and Noise (pk-pk)
-
Ripple and Noise (rms)
-
Output Ripple and Noise(Pk-Pk)
under worst case
-
±9
±16
mV
55
90
mV ^{0-20MHz BW, with a 1µF ceramic}
capacitor and the minimum
12
25
mV _{external cap at output}
-
100
mV
over all operating input voltage,
load and ambient temperature
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
2