参数资料
| 型号： | SQM48T25025-NBC0 |
| 厂商： | Power-One |
| 文件页数： | 7/30页 |
| 文件大小： | 0K |
| 描述： | DC/DC EIGHTH BRICK |
| 标准包装： | 310 |
| 系列： | * |
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SQM48 Series Data Sheet
SemiQ
TM
Family 25A DC-DC Converters
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 E.
V IN
ON/OFF
Time Comments
t 0 ON/OFF pin is ON; system front end power is toggled
on, V IN to converter begins to rise.
t 1 V IN crosses Under-Voltage Lockout protection circuit
threshold; converter enabled.
t 2 Converter begins to respond to turn-on command
(converter turn-on delay).
STATE
V OUT
OFF
ON
t 3 Converter V OUT reaches 100% of nominal value.
For this example, the total converter start-up time (t 3 - t 1 ) is typically
3 ms.
t 0
t 1 t 2
t 3
t
V IN
Scenario #2: Initial Start-up Using ON/OFF Pin
With V IN previously powered, converter started via ON/OFF pin.
See Figure F.
Time Comments
t 0 V INPUT at nominal value.
t 1 Arbitrary time when ON/OFF pin is enabled (converter
enabled).
ON/OFF
STATE OFF
t 2 End of converter turn-on delay.
t 3 Converter V OUT reaches 100% of nominal value.
For this example, the total converter start-up time (t 3 - t 1 ) is typically
3 ms.
V OUT
ON
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 Comments
t 0
V IN and V OUT are at nominal values; ON/OFF pin ON.
t 1
ON/OFF pin arbitrarily disabled; converter output falls
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
Fig. F: Start-up scenario #2.
t
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
t 3
enabled.
Turn-on inhibit delay period ends. If ON/OFF pin is ON,
converter begins turn-on; if off, converter awaits
V OUT
ON
ON/OFF pin ON signal; see Figure F.
t 4 End of converter turn-on delay.
t 5 Converter V OUT reaches 100% of nominal value.
For the condition, (t 2 - t 1 ) ≤ 100 ms , the total converter start-up
time (t 5 - t 2 ) is typically 103 ms. For (t 2 - t 1 ) > 100 ms , start-up will
be typically 3 ms after release of ON/OFF pin.
t 0
t 1 t 2 t 3 t 4 t 5
Fig. G: Start-up scenario #3.
t
Fig. E: Start-up scenario #1.
MCD10085 Rev. 1.1, 08-Jul-10
Page 7 of 30
www.power-one.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SQM48T25025-NBCP | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 2.5V 25A 62.5W 8PIN QUARTER-BRICK - Bulk |
| SQM48T25025-NBCPG | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 2.5V 25A 62.5W - Bulk |
| SQM48T25025-NCA0 | 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: |
| SQM48T25025-NCA0G | 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: |
| SQM48T25025-NCAP | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 2.5V 25A 62.5W - Bulk |
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