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SSQE48T25018 DC-DC Converter
36-75 VDC Input; 1.8 VDC, 25 A Output
Data Sheet
Features
? RoHS lead-free solder and lead-solder-exempted
products are available
? Industry-standard DOSA pinout
? Output: 1.8 V at 25 A
? On-board input differential LC-filter
? Start-up into pre-biased load
? No minimum load required
? Weight: 0.44 oz [12.3 g]
? Meets Basic Insulation requirements of EN60950
? Withstands 100 V input transient for 100 ms
? Fixed-frequency operation
? Hiccup overcurrent protection
? Fully protected (OTP, OCP, OVP, UVLO)
Applications
? Telecommunications
? Data communications
? Wireless communications
? Servers, workstations
Benefits
? High efficiency – no heat sink required
? Cost effective, single board design
? Small size and low-profile
? Remote sense
? Remote ON/OFF positive or negative logic option
? Output voltage trim range: +10%/ ? 20% with
industry-standard trim equations
? Low height of 0.374” (9.5mm)
? Industry standard 1/16 th brick footprint: 0.9” by 1.3”
? High reliability: MTBF = 16.23 million hours,
calculated per Telcordia TR-332, Method I Case 1
? UL60950 recognized in US and Canada and
DEMKO certified per IEC/EN60950
? Designed to meet Class B conducted emissions per
FCC and EN55022 when used with external filter
? All materials meet UL94, V-0 flammability rating
Description
The new SSQE48T25018 DC-DC converter is an open frame sixteenth-brick DC-DC converter that conforms to
the Distributed Open Standards Architecture (DOSA) specifications. The converter operates over an input voltage
range of 36 to 75 VDC, and provides a tightly regulated output voltage with an output current up to 25 A. The
output is fully isolated from the input and the converter meets Basic Insulation requirements permitting a positive
or negative output configuration.
The converter is constructed using a single-board approach with both planar and discrete magnetics. The
standard feature set includes remote On/Off (positive or negative logic), input undervoltage lockout, output
overvoltage, overcurrent, and short circuit protections, output voltage trim, and overtemperature shutdown with
hysteresis.
With standard pinout and trim equations and excellent thermal performance, the SSQE48T25018 converters can
replace in most cases existing eighth-brick converters. Inclusion of this converter in a new design can result in
significant board space and cost savings.
ZD-02091 Rev. 1.0
www.power-one.com
Page 1 of 12
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