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| 型号： | QD48T018025-NBB0 |
| 厂商： | Power-One |
| 文件页数： | 8/15页 |
| 文件大小： | 0K |
| 描述： | CONV DC-DC 37.5W 2.5/1.8V DUAL |
| 标准包装： | 25 |
| 系列： | QD48 |
| 类型： | 隔离 |
| 输出数： | 2 |
| 电压 - 输入（最小）： | 36V |
| 电压 - 输入（最大）： | 75V |
| Voltage - Output 1： | 1.8V |
| Voltage - Output 2： | 2.5V |
| 电流 - 输出（最大）： | 15A，15A |
| 电源（瓦） - 制造商系列： | 37W |
| 电压 - 隔离： | 2kV（2000V） |
| 安装类型： | 通孔 |
| 封装/外壳： | 7-DIP 模块，1/4 砖 |
| 尺寸/尺寸： | 2.30" L x 1.45" W x 0.34" H（58.4mm x 36.8mm x 8.6mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 87% |
| 电源（瓦特）- 最大： | 37.5W |
| 产品目录页面： | 2739 (CN2011-ZH PDF) |
| 其它名称： | 179-2237 QD48T018025-NAA0 QD48T018025-NBBO |
QM48T50012 DC-DC Converter Data Sheet
36-75 VDC Input; 1.2 VDC @ 50A Output
Start-up Information (using negative ON/OFF)
Scenario #1: Initial Start-up From Bulk Supply
ON/OFF function enabled, converter started via application of V IN .
See Figure 5.
V IN
Time
t 0
t 1
Comments
ON/OFF pin is ON; system front end power is toggled
on, V IN to converter begins to rise.
V IN crosses Under-Voltage Lockout protection circuit
threshold; converter enabled.
ON/OFF
STATE
OFF
ON
t 2 Converter begins to respond to turn-on command
(converter turn-on delay).
t 3 Output voltage V OUT 1 reaches 100% of nominal value.
t 4 Output voltage V OUT 2 reaches 100% of nominal value.
For this example, the total converter start-up time (t 4 - t 1 ) is typically
3 ms.
V OUT 2
V OUT 1
t 0
t 1 t 2
t 3
t 4
V OUT 2
V OUT 1
Fig. 5: Start-up scenario #1.
Scenario #2: Initial Start-up Using ON/OFF Pin
With V IN previously powered, converter started via ON/OFF pin.
See Figure 6.
V IN
Time
Comments
t 0
t 1
V INPUT at nominal value.
Arbitrary time when ON/OFF pin is enabled (converter
enabled).
ON/OFF
STATE OFF
t 2 End of converter turn-on delay.
t 3 Output voltage V OUT 1 reaches 100% of nominal value.
t 4 Output voltage V OUT 2 reaches 100% of nominal value.
For this example, the total converter start-up time (t 4 - t 1 ) is typi-
cally 3 ms.
V OUT 2
V OUT 1
ON
V OUT 2
V OUT 1
Scenario #3: Turn-off and Restart Using ON/OFF Pin
With V IN previously powered, converter is disabled and then en-
abled via ON/OFF pin. See Figure 7.
Time Comments
t 0 V IN and V OUT are at nominal values; ON/OFF pin ON.
t 1 ON/OFF pin arbitrarily disabled; converter outputs fall
to zero; turn-on inhibit delay period (100 ms typical) is
initiated, and ON/OFF pin action is internally inhibited.
V IN
t 0 t 1 t 2 t 3 t 4
Fig. 6: Start-up scenario #2.
t 2
ON/OFF pin is externally re-enabled.
If (t 2 - t 1 ) ≤ 100 ms , external action of ON/OFF pin
is locked out by start-up inhibit timer.
ON/OFF
STATE OFF
100 ms
If (t 2 - t 1 ) > 100 ms , ON/OFF pin action is internally
enabled.
t 3 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 6.
t 4 End of converter turn-on delay.
t 5 Output voltage V OUT 1 reaches 100% of nominal value.
t 6 Output voltage V OUT 2 reaches 100% of nominal value.
For the condition, (t 2 - t 1 ) ≤ 100 ms , the total converter start-up
time (t 6 - t 2 ) is typically 103 ms. For (t 2 - t 1 ) > 100 ms , start-up time
will be typically 3 ms after release of ON/OFF pin.
V OUT 2
V OUT 1
t 0
ON
t 1
t 2 t 3 t 4 t 5 t 6
Fig. 7: Start-up scenario #3.
V OUT 2
V OUT 1
MAY 08, 2003 revised to NOV 13, 2006
Page 8 of 15
www.power-one.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
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