BMR4570007SLASH014 datasheet(21/36 Pages) ERICSSON

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PRODUCT SPECIFICATION

1 (7)

Prepared (also subject responsible if other)

No.

EMAOLII

30/1301-BMR 457 Uen

Approved

Checked

Date

Rev

Reference

SEC/D (Julia You)

SECSUND

2012-07-27

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

180 kHz for BMR 457 at VI = 53 V, max IO.

Conducted EMI Input terminal value (typ)

EMI without filter

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.

Module

Filter components:

C1 = 1 µF

C2 = 1 µF + 220 µF

C3 = 1 µF + 220 µF

C4 = 2.2 nF

C5 = 2.2 nF

L1 = 0.81 mH

L2 = 0.81 mH

EMI with filter

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.

A ground layer will increase the stray capacitance in the PWB

and improve the high frequency EMC performance.

Output ripple and noise

Output ripple and noise measured according to figure below.

See Design Note 022 for detailed information.

Output ripple and noise test setup

BMR457 series Fully regulated Advanced Bus Converters

Input 36-75 V, Output up to 25 A / 300 W

1/28701-FGC 101 1835 revC August 2012

Technical Speciﬁcation 21

BMR4570007/014 Datasheet(PDF) 21 Page - Ericsson

BMR4570007/014 Datasheet(HTML) 21 Page - Ericsson

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