QD48T025033-NBB0【PDF 1/15 页】CONV DC-DC 48V IN 3.3/2.5V DUAL

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QD48T025033 DC-DC Converter Data Sheet

36-75 VDC Input; 2.5 and 3.3VDC @ 15A Outputs

The QD48T025033 dual output through-hole mounted

DC-DC converter offers unprecedented performance in a

quarter-brick package by providing two independently

regulated high current outputs. This is accomplished by the

use of patent-pending circuit and packaging techniques to

achieve ultra-high efficiency, excellent thermal performance,

and a very low body profile.

In telecommunications applications the QD48 converters

provide up to 15 A per channel simultaneously – 30 A total –

with thermal performance far exceeding existing dual

quarter-bricks and comparable to dual half-bricks. Low body

profile and the preclusion of heat sinks minimize airflow

shadowing, thus enhancing cooling for downstream devices.

The use of 100% surface-mount technologies for assembly,

coupled with Power-One’s advanced electric and thermal

Features

QD48T025033 Converter

circuitry and packaging, results in a product with extremely

high quality and reliability.

100

500 LFM (2.5 m/s)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

30 LFM (0.15 m/s)

20 30 40 50 60 70 80 90

Ambient Temperature [°C]

Fig. 1: Available output power vs. ambient air temperature and

airflow rates for QD48T025033 converter mounted vertically with air

flowing from pin 3 to pin 1, MOSFET temperature ≤ 120 ° C, Vin =

48 V and balanced load on both outputs (Iout1 = Iout2).

Applications

? Telecommunications

? Data communications

? Wireless

? Servers

RoHS lead-free solder and lead-solder-exempted

products are available

Delivers up to 15 A simultaneously on 2.5 VDC and

3.3 VDC outputs

Can replace two single output quarter-bricks

Minimal cross-channel interference

High efficiency: 87.5% @ 2x15 A, 88% @ 2x7.5 A

Start-up into pre-biased output

No minimum load required

No heat sink required

Low profile: 0.28” [7.2 mm]

Low weight: 1 oz [28 g] typical

Industry-standard footprint: 1.45” x 2.30”

Industry-standard pinout

Meets Basic Insulation requirements of EN60950

Withstands 100 V input transient for 100 ms

On-board LC input filter

Fixed-frequency operation

Fully protected

Output voltage trim range: ± 10% for both outputs

Trim resistor via industry-standard equations

High reliability: MTBF 2.6 million hours, calculated per

Telcordia TR-332, Method I Case 1

Positive or negative logic ON/OFF option

UL 60950-1, CSA C22.2 60950-1-03, and certified per

IEC/EN 60950-1

Meets conducted emissions requirements of FCC

Class B and EN55022 Class B with external filter

All materials meet UL94, V-0 flammability rating

MCD10084 Rev. 1.0, 25-Sep-08

Page 1 of 15

www.power-one.com

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