E48SR1R825NNFA Delta Electronics, E48SR1R825NNFA Datasheet - Page 8

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E48SR1R825NNFA

Manufacturer Part Number
E48SR1R825NNFA
Description
POWER MODULE DC/DC 8TH BRICK 1.8
Manufacturer
Delta Electronics
Series
Delphi E48SRr
Type
Isolated with UVLOr
Datasheet

Specifications of E48SR1R825NNFA

Operating Temperature
-40°C ~ 107°C
Power (watts) - Rated
45W
Efficiency
90.5%
Approvals
CE, cUL, TUV, UL
Output
1.8V
Number Of Outputs
1
Power (watts)
66W
Mounting Type
Through Hole
Voltage - Input
36 ~ 75V
Package / Case
8-DIP Module, 1/8 Brick
1st Output
1.8 VDC @ 25A
Size / Dimension
2.30" L x 22.8" W x 0.35" H (58.4mm x 22.8mm x 9mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
2nd Output
-
3rd Output
-
4th Output
-
DS_E48SR1R225_05142009
DESIGN CONSIDERATIONS
Input Source Impedance
The impedance of the input source connecting to the
DC/DC power modules will interact with the modules
and affect the stability. A low ac-impedance input source
is recommended. If the source inductance is more than
a few μH, we advise adding a 10 to 100 μF electrolytic
capacitor (ESR < 0.7 Ω at 100 kHz) mounted close to
the input of the module to improve the stability.
Layout and EMC Considerations
Delta’s DC/DC power modules are designed to operate
in a wide variety of systems and applications. For design
assistance with EMC compliance and related PWB
layout issues, please contact Delta’s technical support
team. An external input filter module is available for
easier EMC compliance design. Application notes to
assist designers in addressing these issues are pending
release.
Safety Considerations
The power module must be installed in compliance with
the spacing and separation requirements of the
end-user’s safety agency standard, i.e., UL60950,
CAN/CSA-C22.2 No. 60950-00 and EN60950: 2000 and
IEC60950-1999, if the system in which the power
module is to be used must meet safety agency
requirements.
Basic insulation based on 75 Vdc input is provided
between the input and output of the module for the
purpose of applying insulation requirements when the
input to this DC-to-DC converter is identified as TNV-2
or SELV.
source is other than TNV-2 or SELV.
When the input source is SELV circuit, the power module
meets SELV (safety extra-low voltage) requirements. If
the input source is a hazardous voltage which is greater
than 60 Vdc and less than or equal to 75 Vdc, for the
module’s output to meet SELV requirements, all of the
following must be met:
An additional evaluation is needed if the
When installed into a Class II equipment (without
The power module has extra-low voltage (ELV) outputs
This power module is not internally fused. To achieve
Soldering and Cleaning Considerations
Post solder cleaning is usually the final board assembly
mains by reinforced or double insulation.
accessible.
one Vo pin shall also be grounded.
where the module is used, in combination with the
module, to ensure that under a single fault, hazardous
voltage does not appear at the module’s output.
grounding), spacing consideration should be given to
the end-use installation, as the spacing between the
module and mounting surface have not been
evaluated.
when all inputs are ELV.
optimum safety and system protection, an input line
fuse is highly recommended. The safety agencies
require a normal-blow fuse with 5A maximum rating to
be installed in the ungrounded lead. A lower rated fuse
can be used based on the maximum inrush transient
energy and maximum input current.
process before the board or system undergoes
electrical testing. Inadequate cleaning and/or drying
may lower the reliability of a power module and
severely affect the finished circuit board assembly test.
Adequate cleaning and/or drying is especially important
for un-encapsulated and/or open frame type power
modules. For assistance on appropriate soldering and
cleaning procedures, please contact Delta’s technical
support team.
The input source must be insulated from the ac
The input terminals of the module are not operator
If the metal baseplate is grounded, one Vi pin and
A SELV reliability test is conducted on the system
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