参数资料
型号: NCP1027P065G
厂商: ON Semiconductor
文件页数: 18/30页
文件大小: 0K
描述: IC SWIT PWM PROG CM OVP HV 8DIP
标准包装: 1,000
输出隔离: 隔离
频率范围: 58.5kHz ~ 71.5kHz
输入电压: 7.9 V ~ 10 V
输出电压: 700V
功率(瓦特): 25W
工作温度: 0°C ~ 125°C
封装/外壳: 8-DIP(0.300",7.62mm),7 引线
供应商设备封装: 8-PDIP
包装: 管件
其它名称: NCP1027P065GOS
NCP1027
V CC
Vbulk
+
20 m s
RC
To permanent
-
latch
Vout
Q1
NTC
Rupper
BO
Rlower
+
Vlatch
IBO
+
-
V DD
BO
+
VBO
Figure 32. Adding a comparator on the BO pin offers a way to latch-off the controller.
In Figure 32, Q1 is blocked and does not bother the BO
measurement as long as the NTC and the optocoupler are
not activated. As soon as the secondary optocoupler senses
temperature, Q1 base is brought to ground and the BO pin
goes up, permanently latching off the controller. Figure 33
depicts the converter behavior in case of total latch-off.
an OVP condition, or the NTC reacts to a high ambient
Figure 33. If the BO pin is lifted up to VLATCH, the controller permanently latches off.
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