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參數(shù)資料
| 型號： | NCP1014AP100G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | VARISTOR 20VRMS 7MM RADIAL |
| 中文描述： | 1 A SWITCHING REGULATOR, 110 kHz SWITCHING FREQ-MAX, PDIP7 |
| 封裝： | LEAD FREE, PLASTIC, DIP-8/7 |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 324K |
| 代理商： | NCP1014AP100G |
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
http://onsemi.com
13
Figure 18. A more detailed view of the NCP101X offers better insight on how to
properly wire an auxiliary winding.
Startup Source
Drain
+
+
VCC
ON
= 8.5 V
VCC
OFF
= 7.5 V
+
V
CC
Rlimit
+
+
I > 7.4m
(Typ.)
+
+
CVcc
Caux
Laux
Ground
+
Vclamp = 8.7 V typ.
Permanent
Latch
D1
Figure 19. The burst frequency becomes so low that it is difficult to keep
an adequate level on the auxiliary V
CC
. . .
30 ms
Lowering the Standby Power with SkipCycle
Skipcycle 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 skipcycle 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.
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