RDS Power-One, RDS Datasheet - Page 8

• Manufacturer Part Number: RDS
• Description: Rds Dc-dc Series Rds Dc-dc Series
• Manufacturer: Power-One

Safety Considerations
These converters feature 1500 Volt DC isolation from
input to output.
greater than 10 MΩ. These converters are provided
with Basic Insulation between input and output circuits
according to EN60950 / UL1950 / CSA60950-00.
Nevertheless, if the system using the converter needs
to receive safety agency approval, certain rules must
be followed in the design of the system. In particular,
all of the creepage and clearance requirements of the
end-use safety requirements must be observed.
These documents include UL60950, CSA60950-00
and EN60950, although specific applications may
have additional requirements.
In order for the output of the converter to be
considered as SELV (Safety Extra Low Voltage) or
TNV-1, according to EN60950 / UL1950 / CSA60950-
00, one of the following requirements must be met in
the system design:
• The converter has no internal fuse. An external
• If the voltage source feeding the module is SELV,
• The circuitry of the converter may generate
NOV 11, 2005 revised to JUN 29, 2006
fuse must be provided to protect the system from
catastrophic failure.
greater than 2.0 A is recommended. The user can
select a lower rating fuse based upon the inrush
transient and the maximum input current of the
converter, which occurs at the minimum input
voltage. Both input traces and the chassis ground
trace (if applicable) must be capable of conducting
a current of 1.5 times the value of the fuse without
opening.
grounded input line, if any.
the output of the converter is considered SELV and
may be grounded or ungrounded.
transients, which exceed the input voltage. Even if
the input voltage is SELV (<60V) the components
on the primary side of the converter may have to
be considered as hazardous. A safety interlock
may be needed to prevent the user from accessing
the converter while operational.
The fuse must not be placed in the
The input-to-output resistance is
A fuse with a rating not
Page 8 of 12
20W SMT Converter
EMC Specifications
Conducted Noise:
The converters may require a single capacitor to meet
the requirements of level A and level B of EN55022,
CISPR22 and FCC CFR title 47 Part 15 Sub-part J -
Conducted (conducted noise on the input terminals)
Electromagnetic Susceptibility:
* A denotes normal operation, no deviation from
specification. B denotes temporary deviation from
specification is possible.
Electromagnetic
80
70
60
50
40
30
20
10
Electrical Fast
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-6
0
Disturbances
1.E+05
dbµV
Electrostatic
Conducted
Discharge
Standard
Transient
0.1
Field
RDS DC-DC Series Data Sheet
Conducted EMI (Input Terminals)
1.E+06
3Vrms to
2000 Vp
Applied
to input
2 kV to
1
Stress
3V/m
input
pins
EN55022 A QP.
EN55022 A AV.
FREQ (MHz)
•
1.8V to 5V Output
Class
Level
1
2
3
2
1.E+07
10
www.power-one.com
Performance
Outcome *
30
B
A
B
B
1.E+08