DC-DC / Intermediate Bus Converter
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Embedded Power for
ESD air enclosure:
EN61000-4-2 8 kV, 6 kV (Air contact)
IBC25AET4812 60 V. 100 ms
IBC20AES4812 60 V. 100 ms
IBC17AEW4812 100 V. 100 ms
Input/output 2250 Vdc
Switching frequency: Fixed 600 kHz typ.
standards (see note 5): UL/cUL60950-1
Eighth-Brick IBC Series
Operating ambient temperature -40 °C to +85 °C
performance: Non-operating -55 °C to +125 °C
Overvoltage: (See note 9)
125 °C hot spot
33 g (1.16 oz)
Telcordia Tech SR-332 5,500,000 hours
48 Vin, 40 °C, 50% load
All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
42 - 53 Vdc
42 - 53 Vdc
36 - 75 Vdc
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
Output Current Efficiency
25 A 95.5%
20 A 94.5%
17 A 94.0%
Part Number System with Options
17 A =
17 Amps etc.
E = Eighth-
Q = Quarter-
S = Sixteenth-
Input Voltage Type
T = Narrow Input
S = Narrow Input
N = Narrow Telecom
W = Wide Telecom
12 - R
48 = 48 V 12 = 12 V
R = Negative
(See Note 6)
RoHS Compliance (7, 8)
A = Open-frame
0.40 in (10.2
E = Open-rame,
0.45 in (11.4
Blank = 0.188 ”
N = 0.145 ”
K = 0.110 ”
J = Pb-free
Y = RoHS 5/6
1 Recommended input fusing is a 20 A HRC 250 V rated fuse.
2 Measured with external filter. See Application Note 182 for details.
3 Start-up into resistive load.
4 Peak to peak measured without external Pi filter. Significant reduction
possible with external filter. See Application Note 182 for details.
5 This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
6 Active-low remote ON/OFF option is also available. Please add the suffix ‘-R’
to the part number, e.g. IBC17AEW4812-RAJ.
7 TSE RoHS 5/6 (non Pb-free) compliant versions may be available on special
request, please contact your local sales representative for details.
8 NOTICE: Some models do not support all options. Please contact your local
Sales representative or use the on-line model number search tool at http://
www.powerconversion.com to find a suitable alternative.