SQE48T20050-NGB0【PDF 1/14 页】DC/DC EIGHTH BRICK

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SQE48T20050 DC-DC Converter Data Sheet

36-75 VDC Input; 5.0 VDC @ 20 A Output

Features

? RoHS lead free solder and lead solder exempted

products are available

? Delivers up to 20 A

? Industry-standard quarter-brick pinout

? On-board input differential LC-filter

? Start-up into pre-biased load

? No minimum load required

? Weight: 0.72 oz [20.6 g]

? Meets Basic Insulation requirements of EN60950

? Withstands 100 V input transient for 100 ms

Applications

? Fixed-frequency operation

Telecommunications

Data communications

Wireless communications

Servers

? Fully protected

? Latching and non-latching protection available

? Positive or negative logic ON/OFF option

? Remote output sense

? Output voltage trim range: +10%/ ? 20% with

Benefits

? High efficiency – no heat sink required

? Higher current capability at elevated temperatures

than most competitors' 20 A quarter-bricks

? Extremely small footprint: 0.896” x 2.30” (2.06 in 2 ),

38% smaller than conventional quarter-bricks

industry-standard trim equations

? High reliability: MTBF = 13.19 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 high temperature SQE48-Series of dc-dc converter provides a high efficiency single output in a physical

package that is only 62% the size of the industry-standard quarter-brick. Specifically designed for operation in

systems that have limited airflow and increased ambient temperatures, the SQE48-Series of converters utilizes the

same pinout and functionality of the industry-standard quarter-bricks.

The SQE48-Series of converters provides thermal performance in high temperature environments that exceeds

most competitors' 20 A quarter-bricks. This performance is accomplished through the use of patented/

patent-pending circuits, packaging, and processing techniques to achieve ultra-high efficiency, excellent thermal

management, and a low-body profile.

Low-body profile and the preclusion of heat sinks minimize airflow shadowing, thus enhancing cooling for

downstream devices. The use of 100% automation for assembly, coupled with advanced electronic circuits, and

thermal design, results in a product with extremely high reliability.

The SQE48T20050 operates over an input voltage range of 36 to 75 VDC, and provides an output current up to

20 A with a standard output voltage of 5.0 VDC. The output can be trimmed from –20% to +10% of the nominal

output voltage, thus providing outstanding design flexibility.

With standard pinout and trim equations, the SQE48 converters are perfect drop-in replacements for the

competing quarter-brick designs. Inclusion of this converter in new designs can result in significant board space

and cost savings. The designer can expect reliability improvement over other available converters because of the

SQE48-Series’ optimized thermal efficiency.

JUL 07, 2006 revised to APR 12, 2007

Page 1 of 16

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