参数资料
型号: NCP1027ATXGEVB
厂商: ON Semiconductor
文件页数: 15/30页
文件大小: 0K
描述: BOARD EVAL NCP1027 10W STANDBY
设计资源: NCP1027ATXGEVB Schematic
NCP1027ATXGEVB Test Procedure
NCP1027ATXGEVB Bill of Materials
标准包装: 1
主要目的: AC/DC,主面
输出及类型: 1,非隔离
功率 - 输出: 10W
输出电压: 5V
电流 - 输出: 2A
输入电压: 85 ~ 265VAC
稳压器拓扑结构: 回扫
频率 - 开关: 65kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: NCP1027
其它名称: NCP1027ATXGEVB-ND
NCP1027ATXGEVBOS
NCP1027
Fault Condition – Output Too Low
This particular mode of operation occurs when the
feedback is ensured by a two-loop control imposing either
constant output voltage (CV) or constant output current
(CC), for instance in a battery charger. In CC mode, the
output voltage falls down below the original target but the
reason, the controller becomes un-able to detect a real
output short-circuit since Ipflag will never be asserted.
Due to a good winding coupling, the primary side auxiliary
collapsing will ensure a proper fault detection via the
UVLO internal circuit. Figure 29 depicts this operating
way.
feedback loop is kept closed by the CC controller. For that
Figure 29. In this particular case, the output goes low but the timer is not started since the FB pin is still held
by the optocoupler. Due to the UVLO circuit, the controller safely stops operation at V CC = VCC (min) .
http://onsemi.com
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