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| 型号： | SSQE48T10033-PABNG |
| 厂商： | Power-One |
| 文件页数： | 8/13页 |
| 文件大小： | 0K |
| 描述： | DC/DC SIXTEENTH BRICK |
| 标准包装： | 98 |
| 系列： | * |
SSQE48T10033 DC-DC Converter Data Sheet
36-75 VDC Input; 3.3 VDC, 10 A Output
Characterization
General Information
The converters have 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, startup 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 associated with the converter. Additional
comments for specific data are provided below.
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 metallized. The two inner
layers, comprised of two-ounce copper, were used to
provide traces for connectivity to the converter.
The lack of metallization 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 purposes.
All measurements requiring airflow were made in the
vertical and horizontal wind tunnel using Infrared (IR)
thermography and thermocouples for thermometry.
Ensuring components on the converter do not
exceed 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. The use of AWG #40 gauge thermocouples
is recommended to ensure measurement accuracy.
Careful routing of the thermocouple leads will further
minimize measurement error. Refer to Fig. H for the
recommended measuring thermocouple location.
Thermal Derating
Load current vs. ambient temperature and airflow
rates are given in Figure 1. 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).
For each set of conditions, the maximum load current
was defined as the lowest of:
(i) The output current at which any FET junction
temperature does not exceed a maximum specified
temperature of 125 °C as indicated by the
thermographic image, or
(ii) The temperature of the transformer does not
exceed 125 °C, or
(iii) The nominal rating of the converter.
During normal operation, derating curves with
maximum FET temperature less or equal to 125 °C
should not be exceeded. Temperature at
thermocouple location shown in Fig. H should not
exceed 100 °C in order to operate inside the derating
curves.
Fig. H: Locations of the thermocouple for thermal testing.
Efficiency
Figure 2 shows the efficiency vs. load current plot for
ambient temperature of 25 oC, airflow rate of 300 LFM
(1.5 m/s) with vertical mounting and input voltages of
36 V, 48 V, and 72 V. Also, a plot of efficiency vs. load
current, as a function of ambient temperature with
Vin=48 V, airflow rate of 200 LFM (1 m/s) with vertical
mounting is shown in Figure 3.
Power Dissipation
Figure 4 shows the power dissipation vs. load current
plot for Ta = 25 oC, airflow rate of 300 LFM (1.5 m/s)
with vertical mounting and input voltages of 36 V, 48
V, and 72 V. Also, a plot of power dissipation vs. load
current, as a function of ambient temperature with
Vin = 48 V, airflow rate of 200 LFM (1 m/s) with
vertical mounting is shown in Figure 5.
Startup
Output voltage waveforms during the turn-on transient
using the ON/OFF pin for full rated load currents
(resistive load) are shown without and with external
load capacitance in Figure 6 and Figure 7,
respectively.
Ripple and Noise
Figure 10 shows the output voltage ripple waveform,
measured at full rated load current with a 10 μF
tantalum and 1 μF ceramic capacitor across the
ZD-01889 Rev. 1.1, 17-Nov-09
www.power-one.com
Page 8 of 13
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相关代理商/技术参数 |
参数描述 |
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| SSQE48T13050-NAA0G | 制造商:Power-One 功能描述:DC/DC CONVERTER 5V 65W |
| SSQE48T13050-NAANG | 制造商:Power-One 功能描述:DCDC - Bulk |
| SSQE48T13050-NAB0G | 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: |
| SSQE48T13050NABNG | 功能描述:DC/DC转换器 65W 5Vout 13A 36-75Vin PIN=0.145" 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: |
| SSQE48T13050-NABNG | 制造商:Power-One 功能描述:Module DC-DC 1-OUT 5V 13A 8-Pin 1/16-Brick |
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