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参数资料
| 型号： | SSQE48T25015-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： | * |
DATA SHEET
Scenario #3: Turn-off and Restart Using ON/OFF Pin
With V IN previously powered, converter is disabled and then enabled via ON/OFF pin. See Figure G.
Time
t 0
t 1
t 2
t 3
t 4
t 5
Comments
V IN and V OUT are at nominal values; ON/OFF pin ON.
ON/OFF pin arbitrarily disabled; converter output falls to zero; turn-on inhibit delay period
(200 ms typical) is initiated, and ON/OFF pin action is internally inhibited.
ON/OFF pin is externally re-enabled.
If (t 2 - t 1 ) ≤ 200 ms , external action of ON/OFF pin is locked out by startup inhibit timer.
If (t 2 - t 1 ) > 200 ms , ON/OFF pin action is internally enabled.
Turn-on inhibit delay period ends. If ON/OFF pin is ON, converter begins turn-on; if off,
converter awaits ON/OFF pin ON signal; see Figure F.
End of converter turn-on delay.
Converter V OUT reaches 100% of nominal value.
For the condition, (t 2 - t 1 ) ≤ 200 ms , the total converter startup time (t 5 - t 2 ) is typically 205 ms. For (t 2 - t 1 ) > 200 ms ,
startup will be typically 5 ms after release of ON/OFF pin.
Fig. G: Startup scenario #3.
V IN
ON/OFF
STATE
OFF
200 ms
ON
V OUT
t 0
t 1
t 2
t 3 t 4
t 5
t
4
4.1
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.
4.2
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.
SSQE48T25015 DC-DC Converter
8
www.power-one.com
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| SSQL48T20033-NAABG | CONV DC-DC 3.3V 20A 1/16 BRICK |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SSQE48T25018-NAANG | 制造商:Power-One 功能描述:Module DC-DC 1-OUT 1.8V 25A 8-Pin 1/16-Brick |
| SSQE48T25018-NAB0G | 制造商:Power-One 功能描述:DCDC - Bulk |
| SSQE48T25018-NABNG | 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: |
| SSQE48T25018-PAA0 | 制造商:Power-One 功能描述:- Bulk |
| SSQE48T25018-PAAN | 制造商:Power-One 功能描述:Module DC-DC 1-OUT 1.8V 25A 8-Pin 1/16-Brick |
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