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參數資料
| 型號： | NCP1217AD65R2G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | Enhanced PWM Current−Mode Controller for High−Power Universal Off−Line Supplies |
| 中文描述： | 0.5 A SWITCHING CONTROLLER, 71.5 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | LEAD FREE, SOIC-8 |
| 文件頁數： | 15/18頁 |
| 文件大小： | 249K |
| 代理商： | NCP1217AD65R2G |
NCP1217, NCP1217A
http://onsemi.com
15
SoftStart (NCP1217A only)
The NCP1217A features an internal 1.0 ms softstart
activated during the power on sequence (PON). As soon as
V
CC
reaches VCC
OFF
, the peak current is gradually
increased from nearly zero up to the maximum clamping
level (e.g. 1.0 V). This situation lasts during 1.0 ms and
further to that time period, the peak current limit is blocked
to 1.0 V until the supply enters regulation. The softstart is
also activated during the Over Current Burst (OCP)
sequence. Every restart attempt is followed by a softstart
activation. Generally speaking, the softstart will be
activated when V
CC
ramps up either from zero (fresh
poweron sequence) or 5.6 V, the latchoff voltage occurring
during OCP. Figure 30 portrays the softstart behavior. The
time scales are purposely shifted to offer a better zoom
portion.
Figure 30. Softstart is activated during a startup sequence or an OCP condition
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相關代理商/技術參數 |
參數描述 |
|---|---|
| NCP1217AP100 | 功能描述:電流型 PWM 控制器 PWM CURRENT- MODE CONTROL RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1217AP100G | 功能描述:電流型 PWM 控制器 Current Mode PWM w/50% Duty Cycle Max RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1217AP133 | 功能描述:電流型 PWM 控制器 Current Mode PWM RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1217AP133G | 功能描述:電流型 PWM 控制器 Current Mode PWM w/50% Duty Cycle Max RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| NCP1217AP65 | 功能描述:電流型 PWM 控制器 Current Mode PWM RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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