IBX15 Series Data Sheet
Boost Converters
Features
RoHS-compliant for all 6 substances
Wide input voltage range 12 to 154 VDC
Output: 50 to 80 VDC
Class III equipment (no isolation input/output)
Extremely high efficiency
Excellent surge and transient protection
Externally adjustable output voltage
Programmable undervoltage lockout and inhibit
11.5
Interruption time with external capacitor
54.9
0.45"
2.16" EN 50155, 50121-3-2 observed
54.9
2.16"
Safety-approved to IEC/EN 60950-1 and UL/CSA
nd
60950-1 2 Ed.
When the input voltage exceeds a predefined output voltage
Description
level, the input voltage is directly fed forward. The converters
The boost converters were designed in accordance with the
exhibit an input EMC-filter.
standards EN 50155 and EN 50121-3-2 to meet the re-
The boost converters are available in a fully enclosed case or
quirements of various railway and industrial applications in
open-frame (option Z).
rugged environment. They are particularly suitable to expand
the input voltage range of power supplies (e.g. 110IMY15 or
110IMY70 Series DC-DC converters). An additional circuit
allows for providing a predefined interruption time.
Table of Contents Page Page
Description .......................................................................... 1
Electromagnetic Compatibility (EMC) ................................. 6
Model Selection .................................................................. 2
Immunity to Environmental Conditions ............................... 7
Functional Description ........................................................ 2
Mechanical Data ................................................................. 8
Electrical Input Data ............................................................ 3
Safety and Installation Instructions ..................................... 9
Electrical Output Data ......................................................... 4
Options ................................................................................ 9
Auxiliary Functions .............................................................. 5
Copyright 2016, Bel Power Solutions Inc. All rights reserved.
MELCHER
The Power Partners.
BCD.00197 Rev AD, 10-Aug-2016 Page 1 of 9IBX15 Series Data Sheet
Boost Converters
Model Selection
Table 1: Model selection
1
Input voltage Operating input range Output voltage Output current Type designation Efficiency Options
V V V I
i nom i o o nom min typ
2
12 V 8.0 50 VDC 25 50 VDC 3.0 A 12IBX15-25-0G Z
24 V 16.8 154 VDC 50 154 VDC 1.6 A 24IBX15-50-0G 89% 93%
36 V 25.2 154 VDC 50 154 VDC 2.2 A 36IBX15-50-0G 91% 95%
1
Efficiency at V = V , V = V I = I
i i min o o nom, o o nom
2
In preparation
V
o
Functional Description
JM182
150
The IBX15 boost converter is designed as step-up converter in
order to increase the input voltage V to the regulated boost
i
125
voltage V .
oBr
100
When V exceeds V , the output voltage follows V. The
i oB tr i
V = 80 V
oB tr
resulting voltage (see fig. 1) is within the range of V to
oB tr
75
V , which is suitable for adequate DC-DC converters, e.g.
i max
V = 50 V
oB tr
20IMX15 or 24IMX70 for 12IBX15-25 and 110IMY15 or
50
110IMY70 for 24/36IBX15-50. The IBX15 converters have no
25
input-to-output isolation; isolation is provided by the DC-DC
converters connected to the output.
V
0 i
25 50 75 100 125 150
The inrush current is not limited, but the output capacitor of the
Fig. 1
IBX15 and the input capacitors of the connected DC-DC
V versus V depending on V .
o i oB tr
converters are relatively small.
The switching frequency is approximately 2 200 kHz (inter-
leaved). A current limiting circuit protects the main FETs from
trimmed by resistor R to a higher level V . This allows
BA oB tr
overload. However, the output is not short-circuit proof.
together with an external storage capacitor C the realization
hu
The logic is biased by an auxiliary converter with a switching of an interruption time as requested by the railway standard
EN 50155. No other components are needed.
frequency of approx. 350 kHz. The boost voltage V can be
oB
JM081b
12
111
Vo+
Vi+
2
Boost
11
control
D Chu
hu
logic
+
Auxiliary
C
converter
hu
350 kHz
15
Signal logic
3
D
Gi
13
4
Go
R
R
PUL
BA
17 16
PUL BA
Fig. 2
Functional diagram
MELCHER
The Power Partners.
BCD.00197 Rev AD, 10-Aug-2016 Page 2 of 9
PTC