If you’re designing with EMC in mind, please note that all of MPS’s BWR

7-10 Watt A-Series DC/DC Converters have been characterized for radi-

ated and conducted emissions in our new EMI/EMC laboratory. Testing is

conducted in an EMCO 5305 GTEM test cell utilizing EMCO automated EMC

test software. Radiated emissions are tested to the limits of FCC Part 15,

Class B and CISPR 22 (EN 55022), Class B. Correlation to other specifica-

tions can be supplied upon request. Radiated emissions plots to FCC and

CISPR 22 for model BWR-15/330-D48A appear below. Published EMC test

reports are available for each model number. Contact MPS’s Applications

Engineering Department for more details.

Figure 2. Using External Capacitors to Reduce

Input/Output Ripple/Noise

1

2

3

5

4

+

+

+

–OUTPUT

+INPUT

–INPUT

+OUTPUT

COMMON

Input Fusing

Certain applications and/or safety agencies may require the installation of

fuses at the inputs of power conversion components. For MPS A-Series

BWR 7-10 Watt DC/DC Converters, you should use slow-blow type fuses

with values no greater than the following:

Fuse Value

"D5A"

3A

"D12A"

2A

"D48A"

1A

80

70

60

50

40

30

20

10

0

–10

–20

Frequency (MHz)

100

1000

FCC Class B Limit

BWR-15/330-D48A Radiated Emissions

FCC Part 15 Class B, 3 Meters

Converter Output = ±15Vdc @ ±300mA

Radiated Emissions

BWR-15/330-D48A Radiated Emissions

EN 55022 Class B, 10 Meters

Converter Output = ±15Vdc @ ±300mA

80

70

60

50

40

30

20

10

0

–10

–20

Frequency (MHz)

100

1000

Radiated Emissions

EN 55022 Class B Limit

MPS’s world-class design, development and manufacturing team stands

ready to work with you to deliver the exact power converter you need for

your demanding, large volume, OEM applications. And ... we’ll do it on

time and within budget!

Our experienced applications and design staffs; quick-turn prototype

capability; highly automated, SMT assembly facilities; and in-line SPC

quality-control techniques combine to give us the unique ability to design

and deliver any quantity of power converters to the highest standards of

quality and reliability.

We have compiled a large library of DC/DC designs that are currently used

in a variety of telecom, medical, computer, railway, aerospace and indus-

trial applications. We may already have the converter you need.

Contact us. Our goal is to provide you the highest-quality, most cost-

effective power converters available.

CUSTOM

CAPABILITIES

EMI RADIA TED EMISSIONS

BWR Models

7-10W, Dual Output DC/DC converters

MDC_BWR-7-10_D01 Page 4 of 5

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