SQL48T20033-NDA0G【PDF 1/14 页】CONV DC-DC 3.3V 20A 1/8 BRICK

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SQL48T20033 DC-DC Converter Data Sheet

36-75 VDC Input; 3.3 VDC @ 20A Output

Features

? RoHS lead-free solder and lead-solder-exempted

products are available

? Industry-standard s-brick pin-out

? Delivers 3.3V @ 20A with no derating up to 70°C

(@ 48 Vin, ≥ 100 LFM)

? Withstands 100V input transient for 100ms

? Fixed-frequency operation

? On-board input differential LC-filter

? Start-up into pre-biased load

? No minimum load required

? Meets Basic Insulation requirements of EN60950-1

? High efficiency – no heat sink required

? Industry-standard 1/8 brick footprint: 0.896” x

2.30” (2.06 in ) - 38% smaller than conventional

Applications

? Telecommunications

? Data communications/processing

? LAN/WAN

? Servers, Workstations

Benefits

quarter-bricks

? Fully protected (OTP, OCP, OVP, UVLO)

? Remote output sense

? Positive or negative logic ON/OFF option

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

Industry Standard trim equations

? Low height of 0.375” (9.5mm)

? Weight: 21.4g, 32.9g with baseplate

? High reliability: MTBF approx. 23.6 million hours,

calculated per Telcordia SR-332, Method I Case 1

? Approved to the following Safety Standards:

UL/CSA60950-1, EN60950-1, and IEC60950-1

? Designed to meet Class B conducted emissions per

FCC and EN55022 when used with external filter

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

output, in a 1/8

? All materials meet UL94, V-0 flammability rating

Description

The new iPWER? high performance 20A SQL48T20033 DC-DC converter provides a high efficiency single

designed for operation in systems that have limited airflow and increased ambient temperatures, the

SQL48T20033 converter utilizes the same pin-out and Input/Output functionality of the industry-standard quarter-

bricks. In addition, a heat spreader feature is available (-xxxBx suffix) that provides an effective thermal interface

for coldplate and heat sinking options.

The SQL48T20033 converter thermal performance is accomplished through the use of 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 impedance to system airflow, thus enhancing cooling

for both upstream and 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.

Operating from a wide-range 36-75V input, the SQL48T20033 converter provides a fully regulated 3.3V output

voltage. The outputs can be trimmed from –20% to +10% of the nominal output voltage, thus providing outstanding

design flexibility. Employing a standard power pin-out, the SQL48T20033 converter is an ideal drop-in

replacement for existing high current quarter-brick designs. Inclusion of this converter in a new design can result in

significant board space and cost savings. The designer can expect reliability improvement over other available

converters because of the SQL48T20033’s optimized thermal efficiency.

Baseplate/heat spreader option (suffix ‘-xxxBx’) facilitates heatsink mounting to further enhance the unit’s thermal capability.

Rev 0.2, 3-Mar-11

www.power-one.com

Page 1 of 14

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