参数资料
型号: NCP1014LEDGTGEVB
厂商: ON Semiconductor
文件页数: 12/24页
文件大小: 0K
描述: BOARD EVAL 90-305VAC 8W LED DVR
设计资源: NCP1014LEDGTGEVB Gerber Files
NCP1014LEDGTGEVB Bill of Materials
标准包装: 1
系列: Greenpoint™
电流 - 输出 / 通道: 630mA
输出及类型: 1,隔离
输出电压: 20V
输入电压: 90 ~ 305VAC
已供物品:
已用 IC / 零件: NCP1014
其它名称: NCP1014LEDGTGEVB-ND
NCP1014LEDGTGEVBOS
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
VCC ON = 8.5 V
VCC OFF = 7.5 V
Drain
+
--
+
Startup Source
+
V CC
Rlimit
D1
--
+
Vclamp = 8.7 V typ.
+
CVcc
+
Caux
Laux
Permanent
+
Latch
--
+
I > 7.4m
(Typ.)
Ground
Figure 18. A more detailed view of the NCP101X offers better insight on how to
properly wire an auxiliary winding.
> 30 ms
Figure 19. The burst frequency becomes so low that it is difficult to keep
an adequate level on the auxiliary V CC . . .
Lowering the Standby Power with Skip--Cycle
Skip--cycle offers an efficient way to reduce the standby
power by skipping unwanted cycles at light loads.
However, the recurrent frequency in skip often enters the
audible range and a high peak current obviously generates
acoustic noise in the transformer. The noise takes its origins
in the resonance of the transformer mechanical structure
which is excited by the skipping pulses. A possible
solution, successfully implemented in the NCP1200 series,
also authorizes skip--cycle but only when the power
demand has dropped below a given level. At this time, the
peak current is reduced and no noise can be heard.
Figure 20 pictures the peak current evolution of the
NCP101X entering standby.
http://onsemi.com
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