Ericsson Internal
E
EMAOLII
PRODUCT SPECIFICATION
1 (8)
Prepared (also subject responsible if other)
No.
30/1301-BMR 456 Uen
33
Technical Specification
BMR456 series Fully regulated AdvCahneckceed d Bus Converters
Approved
Date
Rev
Reference
1/28701-FGC 101 1823 revD February 2013
SEC/D (Julia You)
EZHIXZH
2013-02-06
F
© Ericsson AB
Input 36-75 V, Output up to 39 A / 468 W
EMC Specification
Conducted EMI measured according to EN55022, CISPR 22
and FCC part 15J (see test set-up). See Design Note 009 for
detailed information. The fundamental switching frequency is
140 kHz for BMR 456 at VI = 53 V, max IO.
Conducted EMI Input terminal value (typ)
Test set-up
Layout recommendations
The radiated EMI performance of the product will depend on
the PWB layout and ground layer design. It is also important
to consider the stand-off of the product. If a ground layer is
used, it should be connected to the output of the product and
the equipment ground or chassis.
EMI without filter
A ground layer will increase the stray capacitance in the PWB
and improve the high frequency EMC performance.
Optional external filter for class B
Suggested external input filter in order to meet class B in
EN 55022, CISPR 22 and FCC part 15J.
Output ripple and noise
Output ripple and noise measured according to figure below.
See Design Note 022 for detailed information.
Filter components:
C1 = 1 µF
C2 = 1 µF+220 µF
0
C3 = 1 µF+220 µF
C4
L1
L2
C4,C5 = 2.2 nF
L1 = 810 µH
L2 = 810 µH
+
+
C1
C2
C3
R
Module
-
-
C5
0
Output ripple and noise test setup
EMI with filter
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