Datasheet

TWR A-Series
20W, Triple Output DC-DC Converters
MDC_TWR20W.E02 Page 6 of 8
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If you’re designing with EMC in mind, note that all of MPS’s TWR 20 Watt
A-Series DC/DC Converters have been characterized for radiated and con-
ducted 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 specifi cations can be
supplied upon request. Radiated emissions plots to FCC and CISPR 22 for
model TWR-5/3000-15/500-D12A appear below. Its performance is typical
of all models in the Series. Published EMC test reports are available for
each model number. Contact MPS’s Applications Engineering for details.
–12.025
–12.050
–12.075
–12.100
–12.125
–12.150
–12.175
–12.200
18 24 36 48 60 72
-12V Line Regulation
(+5V output loaded @ 2.75A, ±12V outputs loaded @ ±250mA))
-12V Output Voltage (V)
Input Voltage (V)
+5.010
+5.005
+5.000
+4.995
+4.990
+4.985
+4.980
+4.975
18
24 36 48 60 72
+5V Line Regulation
(+5V output loaded @ 2.75A, ±12V outputs loaded @ ±250mA))
+5V Output Voltage (V)
Input Voltage (V)
+12.150
+12.125
+12.100
+12.075
+12.050
+12.025
+12.000
+11.975
18 24 36 48 60 72
+12V Line Regulation
(+5V output loaded @ 2.75A, ±12V outputs loaded @ ±250mA))
+12V Output Voltage (V)
Input Voltage (V)
80
70
60
50
40
30
20
10
0
–10
–20
Frequency (MHz )
100
1000
FCC Class B Li mi t
Radiat ed Emissions (dBμV/M)
Radiated Emis si ons
80
70
60
50
40
30
20
10
0
–10
–20
Frequency (MHz)
100
1000
Radiated Emissions
EN 55022 Class B Limi t
Radiated Emissions (dBμV/ M)
TWR-5/3000-15/500-D12A Radiated Emissions
FCC Part 15 Class B, 3 Meters
Converter Output = +5Vdc @ 2.7A and ±15Vdc @ ±450mA
TWR-5/3000-15/500-D12A Radiated Emissions
EN 55022 Class B, 10 Meters
Converter Output = +5Vdc @ 2.7A and ±15Vdc @ ±450mA
LINE REGULATION EMI RADIATED EMISSIONS