RFS/RDS Series Data Sheet
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EMC Specifications
20W SMT DC-DC Converters, 1.5 – 5 V Output
Electromagnetic Susceptibility:
Conducted Noise, RFS Series
The converters meet the requirements of EN 55022
Class A and Class B for conducted noise on the input
terminals using the circuit below:
Standard
Electrostatic
Discharge
EN 61000-4-2
Applied
Stress
2 kV to
pins
Class
Level
1
Performance
Criterion *
B
Electromagnetic
18
JM069
RFS
1
Field
EN 61000-4-3
Electrical Fast
Transients
EN 61000-4-4
3 V/m
2000 Vp
to input
2
3
A
B
17
converter
2
Conducted
Disturbances
EN 61000-4-6
3 VAC to
input
2
B
* A denotes normal operation, no deviation from
specification. B denotes temporary deviation from
C1 = 18 nF for RFS04ZG, RFS06ZE
C1 = 27 nF for RFS06ZD, RFS06ZB, RFS06ZA
C2 = 2 μF to meet EN 55022 Class A
C2 = 7 μF to meet EN 55022 Class B
Conducted Noise, RDS Series
The converters may require a single capacitor to meet
the requirements of EN 55022 Class A for conducted
emissions on the input terminals; see the figure below.
specification possible.
dbμV
80
70
60
50
40
30
20
10
Conducted emissions (input pins)
EN55022 A QP.
EN55022 A AV.
0
0.1
1,E+0 5
1,E+06
1,E+07
30
1,E+08
FREQ (MHz)
BCD.00017 Rev. AA, 18-Oct-2010
Page 15 of 18
www.power-one.com
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