- 您现在的位置：买卖IC网 > Sheet目录883 > SQE48T20120-NDABG (Power-One)CONV DC-DC BUS 240W 12V 1/8 BRK
SQE48T20120 DC-DC Converter Data Sheet
36-75 VDC Input; 12 VDC @ 20A Output
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), efficiency, startup and
shutdown parameters, output ripple and noise,
transient response to load step-change, overcurrent,
and short circuit.
temperature of 125°C as indicated by the thermal
measurement
(ii) The output current at which the temperature at
the thermocouple locations T C and T C1 do not exceed
125°C and 110°C respectively. (Figure E)
(iii) The nominal rating of the converter (20A/240W).
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 metalized. 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
Thermocouples (T C )
Thermocouple (T B )
Area
T C1
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.
Fig. E: Locations of the thermocouples for thermal testing.
Thermal Derating – Baseplate Cooled (p/n: -xGxBx)
The maximum load current rating vs. baseplate
temperature is provided in Figure 4.
The ambient temperature was maintained ≤ 85°C,
with an airflow rate of ≤ 30LFM ( ≤ 0.15m/s).
Thermocouple measurements were maximized, as
above, to the following limits:
T C ≤ 125°C, T C1 ≤ 110°C & T B ≤ 105°C.
The user should design for T B ≤ 105°C.
Thermographic
imaging is preferable; if this
Efficiency
capability is not available, then thermocouples may
be used. The use of AWG #36 gauge thermocouples
is recommended to ensure measurement accuracy.
Careful routing of the thermocouple leads will further
minimize measurement error. Refer to Figure E for
the optimum measuring thermocouple location.
Thermal Derating – Air Cooled
Load current vs. ambient temperature and airflow
rates are given in Figures 1 - 3. Ambient temperature
was varied between 25°C and 85°C, with airflow
rates from 30 to 500LFM (0.15 to 2.5m/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
Figure 5 shows the efficiency vs. load current plot for
ambient temperature (T A ) of 25oC, airflow rate of
300LFM (1.5m/s) with vertical mounting and input
voltages of 36V, 48V, 65V and 75V.
Power Dissipation
Figure 6 shows the power dissipation vs. load
current plot for T A =25oC, airflow rate of 300LFM
(1.5m/s) with vertical mounting and input voltages of
36V, 48V, 65V and 75V.
Startup
Output voltage waveforms, during the turn-on
transient using the ON/OFF pin for full rated load
currents (resistive load) are shown with and without
temperature does not exceed
a maximum
external load capacitance in and, respectively.
MCD10157 Rev. 1.5, 03-Mar-11
www.power-one.com
Page 7 of 13
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
SQE48T30012-NGB0
DC/DC EIGHTH BRICK
SQE48T40015-NDA0
DC/DC EIGHTH BRICK
SQE48T40018-NDA0
DC/DC EIGHTH BRICK
SQE48T40025-NDA0
DC/DC EIGHTH BRICK
SQE48T50012-NDA0
DC/DC EIGHTH BRICK
SQL48T20033-NDA0G
CONV DC-DC 3.3V 20A 1/8 BRICK
SQM48S20033-NS00
DC/DC EIGHTH BRICK
SQM48T20010-PCB0
DC/DC EIGHTH BRICK
相关代理商/技术参数
SQE48T20120-NDB0G
制造商:Power-One 功能描述:- Bulk 制造商:Power-One 功能描述:Module DC-DC 1-OUT 12V 20A 5-Pin 1/8-Brick
SQE48T30012-NGB0
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:
SQE48T30012-NGB0G
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:
SQE48T30012-NGBTG
制造商:Power-One 功能描述:DC/DC PS SGL-OUT 1.2V 30A 8PIN QUARTER-BRICK - Bulk
SQE48T30012-PGB0
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:
SQE48T30012-PGB0G
制造商:Power-One 功能描述:DC/DC PS SGL-OUT 1.2V 30A 8PIN QUARTER-BRICK - Bulk
SQE48T30015-NGA0G
制造商:Power-One 功能描述:Module DC-DC 1-OUT 3.3V 30A 8-Pin 1/8-Brick 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 1.5V 30A 8PIN - Bulk
SQE48T30015-NGB0
功能描述:DC/DC转换器 36-75Vin 30ADC 1.5V 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: