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QD48T0180205 DC-DC Converter Data Sheet
36-75 VDC Input; 1.8 and 2.5 VDC @ 15A Output
The QD48T018025 dual output through-hole mounted
DC-DC converter offers unprecedented performance in a
quarter brick package by providing two independently regu-
lated 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 circuitry
Features
QD48T018025 Converter
40
30
20
and packaging, results in a product with extremely high qual-
ity and reliability.
100
90
80
70
60
50
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)
10
0
20 30 40 50 60 70 80 90
Ambient Temperature [°C]
Fig. 1: Available output power vs. ambient air temperature and
airflow rates for QD48T018025 converter with D height pins
mounted vertically with air flowing from pin 3 to pin 1, MOSFET
temperature ≤ 120 ° C, Vin = 48 V and balanced load on both out-
puts (Iout1 = Iout2).
Applications
? Telecommunications
? Datacommunications
? Wireless
? Servers
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RoHS lead-free solder and lead-solder-exempted
products are available
Delivers up to 15 A simultaneously on 1.8 VDC and
2.5 VDC outputs
Can replace two single output quarter-bricks
Minimal cross-channel interference
High efficiency: 86% @ 2x15 A, 87% @ 2x7.5 A
Starts-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 recognized in U.S. & Canada, and DEMKO
certified per IEC/EN 60950 (pending)
Meets conducted emissions requirements of FCC
Class B and EN55022 Class B with external filter
All materials meet UL94, V-0 flammability rating
MAY 08, 2003 revised to NOV 13, 2006
Page 1 of 15
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相关代理商/技术参数
QD48T018025-NBB0G 制造商:Power-One 功能描述:
QD48T018025-NBC0 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/2.5V 15A - Bulk
QD48T018025-NBC0G 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/2.5V 15A - Bulk
QD48T018025-NCB0 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/2.5V 15A - Bulk
QD48T018025-NCB0G 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/2.5V 15A - Bulk
QD48T018025-NCC0 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/2.5V 15A - Bulk
QD48T018025-NCC0G 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/2.5V 15A - Bulk
QD48T018025-NDA0 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 1.8V/2.5V 15A - Bulk