QM48S40033-NS00【PDF 1/13 页】DC/DC QTR BRICK 132W 3.3V SMD

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QM48S40033 DC-DC Converter Data Sheet

36-75 VDC Input; 3.3 VDC @ 40A Output

The QmaX

Series of high current single output DC-DC

converters from Power-One sets new standards for thermal

performance and power density in the quarter brick package.

The 40A QM48S converters of the QmaX

Series provide

thermal performance in high temperature environments that

is comparable to or exceeds the industry’s leading 40A half

bricks. This is accomplished through the use of patent pend-

ing circuit, packaging and processing techniques to achieve

ultra-high efficiency, excellent thermal management and a

very low body profile.

Features

QM48S40033 Converter

Series con-

Operating from a 36-75 V input, the QmaX

The QM48S40 converters have a power density of up to

130 W/in 3 , more than twice that of competitors’ 40A half

bricks. Over 1 square inch of board space can be saved for

every slot in which a 40A half brick is replaced with a

QM48S40 converter from Power-One.

Low body profile and the preclusion of heat sinks minimize

impedance to system airflow, thus enhancing cooling for

downstream devices. The use of 100% automation for as-

sembly, coupled with Power-One’s advanced electric and

thermal design, results in a product with extremely high reli-

ability.

verters provide standard output voltage for 3.3 V. Output can

be trimmed from –20% to +10% of the nominal output volt-

age, thus providing outstanding design flexibility.

Applications

? Telecommunications

? Data communications

? Wireless

? Servers

RoHS lead-free solder and lead-solder-exempted

products are available

Delivers up to 40 A (132 W)

Industry-standard SM quarter brick pinout

Higher current capability at 70 oC than most competi-

tors’ 40 A half bricks

On-board input differential LC-filter

High efficiency – no heat sink required

Start up into pre-biased output

No minimum load required

Low profile: 0.28” [7.1 mm]

Low weight: 1.06 oz [30 g] typical

Meets Basic Insulation requirements of EN60950

Withstands 100 V input transient for 100 ms

Fixed-frequency operation

Fully protected

Remote output sense

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

standard trim equations

High reliability: MTBF of 2.6 million hours, calculated

per Telcordia TR-332, Method I Case 1

Positive or negative logic ON/OFF option

UL 60950 recognition in US and Canada and DEMKO

certification per IEC/EN 60950

Meets conducted emissions requirements of FCC

Class B and EN 55022 Class B with external filter

All materials meet UL94, V-0 flammability rating

FEB 10, 2004 revised to NOV 13, 2006

Page 1 of 13

www.power-one.com

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