RFS06ZA Datasheet, PDF (10/14 Pages) Power-One – RFS Series: 20W / 6.0A DC/DC Converters 36-75V Input 1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs

RFS Series: 20W / 6.0A DC/DC Converters
36-75V Input
1.5V, 1.8V, 2.5V, 3.3V and 5.0V Outputs
Safety Considerations
These converters feature 1500 Volt DC isolation
from input to output. The input to output resistance
is greater than 10MOhm. These converters are
provided with Operational 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
fuse must be provided to protect the system
from catastrophic failure. A fuse with a rating
not greater than 2.0A 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. The fuse
must not be placed in the grounded input line, if
any.
• If the voltage source feeding the module is
SELV, the output of the converter is considered
SELV and may be grounded or ungrounded.
• The circuitry of the converter may generate
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.
Product Specifications
Oct 2001
EMC Specifications
Conducted Noise:
The converters 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) using the following
circuit.
C1 = 18nF for RFS04ZG & RFS06ZE
C1 = 26nF for RFS06ZD, RFS06ZB & RFS06ZA
C2 = 2µF to meet EN55022A
C2 = 7µF to meet EN55022B
Electromagnetic Susceptibility:
Standard
Electrostatic
Discharge
EN61000-4-2
Electromagnetic
Field
EN61000-4-3
Electrical Fast
Transient
EN61000-4-4
Applied
Stress
2KV to
pins
3V/m
2000 Vp
to input
Class
Level
1
2
3
Performance
Outcome *
B
A
B
Conducted
Disturbances
EN61000-4-6
3Vrms to
input
2
B
* A denotes normal operation, no deviation from
specification. B denotes temporary deviation from
specification is possible.
18-Oct-01
Rev 1.0
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