Data Sheet
October 11, 2011
ESTW025A0F Series (Eighth-Brick) DC-DC Converter Power Modules
36–75Vdc Input; 3.3Vdc Output; 25A Output Current
Features
STINGRAY™ SERIES
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Wide input voltage range: 36-75 Vdc
Delivers up to 25A Output current
Monotonic startup into prebiased load
Output Voltage adjust: 80% to 110% of Vo,nom
Remote sense
Constant switching frequency
Positive remote On/Off logic
Input under voltage protection
Output overcurrent and overvoltage protection
Over-temperature protection
RoHS Compliant
Industry standard, DOSA compliant footprint
57.9mm x 22.8mm x 8.5mm
Applications
(2.28 in x 0.9 in x 0.335 in)
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Distributed power architectures
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Low profile height and reduced component skyline
Wireless networks
Suitable for cold wall cooling using suitable Gap
Pad applied directly to top side of module
Access and optical network Equipment
Enterprise Networks including Power over Ethernet
(PoE)
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High efficiency 92% at full load (Vin=48Vdc)
No thermal derating up to 68°C, 1.0m/s (200 LFM)
Wide operating temperature range (-40°C to 85°C)
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Latest generation IC’s (DSP, FPGA, ASIC) and
Microprocessor powered applications
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
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Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
UL* 60950-1, 2nd Ed. Recognized, CSA† C22.2 No.
60950-1-07 Certified, and VDE‡ (EN60950-1, 2nd
Ed.) Licensed
Options
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Negative Remote On/Off logic (-1 option,
preferred/standard)
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Surface Mount version (-S option)
Auto-restart (-4 option, preferred/standard)
Trimmed leads (-6 or -8 options)
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CE mark meets 2006/95/EC directive§
Meets the voltage and current requirements for
ETSI 300-132-2 and complies with and licensed for
Basic insulation rating per EN60950-1
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2250 Vdc Isolation tested in compliance with IEEE
802.3¤ PoE standards
ISO**9001 and ISO 14001 certified manufacturing
facilities
Description
The ESTW025A0F series, Eighth-brick power modules are isolated dc-dc converters that can deliver up to 25A of output
current and provide a precisely regulated output voltage over a wide range of input voltages (Vin = 36 -75Vdc). The
module achieves typical full load efficiency of 92% at 3.3Vdc output voltage. The open frame modules construction, available
in both surface-mount and through-hole packaging, enable designers to develop cost- and space-efficient solutions.
Document No: DS09-013 ver.1.01
PDF name: ESTW025A0F.pdf
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UL is a registered trademark of Underwriters Laboratories, Inc.
CSA is a registered trademark of Canadian Standards Association.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
This product is intended for integration into end-user equipment . All of the required procedures of end-use equipment should be followed.
IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated.
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** ISO is a registered trademark of the International Organization of Standards