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| 型号： | QD48T033050-PBC0 |
| 厂商： | Power-One |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | DC/DC QTR BRICK DL 3.3V/5V T/H |
| 标准包装： | 100 |
| 系列： | * |
QD48T033050 DC-DC Converter Data Sheet
36-75 VDC Input; 3.3VDC @ 15A and 5.0VDC @ 10A Outputs
Input Transient Withstand
This family of converters withstands 100 V input transient for
100ms.
Characterization
General Information
The converter has been characterized for many operational
aspects, to include thermal derating (maximum load current
as a function of ambient temperature and airflow) for vertical
and horizontal mounting, efficiency, start-up and shutdown
parameters, output ripple and noise, transient response to
load step-change, overload and short circuit.
The following pages contain specific plots or waveforms as-
sociated with the converter. Additional comments for specific
data are provided below.
Thermal Derating
Available output power and load current vs. ambient tem-
perature and airflow rates are given in Figs. 8-15. Ambient
temperature was varied between 25°C and 85°C, with airflow
rates from 30 to 500 LFM (0.15 to 2.5 m/s), and vertical and
horizontal converter mounting.
For each set of conditions, the maximum load current was
defined as the lowest of:
(i) The output current at which either any FET junction tem-
perature did not exceed a maximum specified temperature
(120°C) as indicated by the thermographic image, or
(ii) The nominal rating of the converter (15 A on Vout1 and
10 A on Vout2.)
During normal operation, derating curves with maximum FET
temperature less than or equal to 120°C should not be ex-
ceeded. Temperature on the PCB at the thermocouple loca-
tion shown in Fig. 38 should not exceed 118°C in order to
operate inside the derating curves.
Test Conditions
All data presented were taken with the converter soldered to
a test board, specifically a 0.060” thick printed wiring board
(PWB) with four layers. The top and bottom layers were not
metalized. The two inner layers, comprising two-ounce cop-
per, were used to provide traces for connectivity to the con-
verter.
The lack of metalization on the outer layers as well as the
limited thermal connection ensured that heat transfer from
the converter to the PWB was minimized. This provides a
worst-case but consistent scenario for thermal derating pur-
poses.
All measurements requiring airflow were made in Power-
One’s vertical and horizontal wind tunnel facilities using in-
frared (IR) thermography and thermocouples for thermome-
try.
Ensuring that the components on the converter do not ex-
ceed their ratings is important to maintaining high reliability.
If one anticipates operating the converter at or close to the
maximum loads specified in the derating curves, it is prudent
to check actual operating temperatures in the application.
Thermographic imaging is preferable; if this capability is not
available, then thermocouples may be used. Power-One
recommends the use of AWG #40 gauge thermocouples to
ensure measurement accuracy. Careful routing of the ther-
mocouple leads will further minimize measurement error.
Refer to Figure 38 for optimum measuring thermocouple lo-
cation.
Efficiency
Efficiency vs. load current plots are shown in Figs. 16-21 for
ambient temperature of 25oC, airflow rate of 300 LFM (1.5
m/s), both vertical and horizontal orientations, and input volt-
ages of 36 V, 48 V and 72 V, for different combinations of
the loads on outputs Vout1 and Vout2.
Start-up
Output voltage waveforms during the turn-on transient using
the ON/OFF pin, are shown without and with full rated load
currents (resistive load) in Figs. 22 and 23, respectively.
Ripple and Noise
Figure 34 shows the output voltage ripple waveform, meas-
ured at full rated load current on both outputs with a 1 μF
ceramic capacitor across both outputs. Note that all output
voltage waveforms are measured across a 1 μ F ceramic ca-
pacitor.
The input reflected ripple current waveforms are obtained
using the test setup shown in Fig. 35. The corresponding
waveforms are shown in Figs. 36 and 37.
MCD10083 Rev. 1.0, 24-Sep-08
Page 7 of 16
www.power-one.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| QD48T033050-PBC0G | 功能描述:DC/DC转换器 RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| QD48T033050-PCA0 | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 3.3V/5V 15A/10A - Bulk |
| QD48T033050-PCA0G | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 3.3V/5V 15A/10A - Bulk |
| QD48T033050-PCB0G | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 3.3V/5V 15A/10A - Bulk |
| QD48T033050-PCC0 | 制造商:Power-One 功能描述:DC/DC PS DUAL-OUT 3.3V/5V 15A/10A - Bulk |
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