参数资料
型号: NCP1014APL065R2G
厂商: ON Semiconductor
文件页数: 14/24页
文件大小: 0K
描述: IC OFFLINE SW SMPS CM OVP 7DIPGW
标准包装: 1
输出隔离: 隔离
频率范围: 59kHz ~ 71kHz
输入电压: 8.1 V ~ 10 V
输出电压: 700V
功率(瓦特): 19W
工作温度: -40°C ~ 125°C
封装/外壳: 8-SMD(7 个接脚),鸥形翼
供应商设备封装: 7-PDIP,鸥翼型
包装: 标准包装
其它名称: NCP1014APL065R2GOSDKR
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
Soft--Start
The NCP101X features an internal 1.0 ms soft--start
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 internal
clamping level (e.g. 350 mA). This situation lasts 1.0 ms
and further to that time period, the peak current limit is
blocked to the maximum until the supply enters regulation.
The soft--start is also activated during the over current burst
V CC
0 V (Fresh PON)
or
4.7 V (Overload)
Current
(OCP) sequence. Every restart attempt is followed by a
soft--start activation. Generally speaking, the soft--start will
be activated when V CC ramps up either from zero (fresh
power--on sequence) or 4.7 V, the latch--off voltage
occurring during OCP. Figure 22 portrays the soft--start
behavior. The time scales are purposely shifted to offer a
better zoom portion.
8.5 V
Max Ip
Sense
1.0 ms
Figure 22. Soft--Start is activated during a startup sequence or an OCP condition.
Non--Latching Shutdown
In some cases, it might be desirable to shut off the part
temporarily and authorize its restart once the default has
disappeared. This option can easily be accomplished
through a single NPN bipolar transistor wired between FB
and ground. By pulling FB below the internal skip level
(Vskip), the output pulses are disabled. As soon as FB is
relaxed, the IC resumes its operation. Figure 23 depicts the
application example.
1
2
3
8
7
4
5
Drain
ON/OFF
+
CV cc
Figure 23. A non--latching shutdown where pulses are stopped as long as the NPN is biased.
http://onsemi.com
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