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NCP1237 데이터시트(PDF) 22 Page - ON Semiconductor

부품명 NCP1237
상세설명  Fixed Frequency Current Mode Controller for Flyback Converters
PDF  34 Pages
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제조업체  ONSEMI [ON Semiconductor]
홈페이지  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1237 데이터시트(HTML) 22 Page - ON Semiconductor

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NCP1237
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22
In the latched version (Figure 19), the controller can
restart only if a brown−out or a VCC reset occurs. In a real
application this can only happen if the power supply is
unplugged from the mains line.
Figure 19. Latched Timer−Based Overcurrent Protection
time
Fault Flag
time
VCC
time
DRV
VCC(on)
VCC(min)
Overcurrent
applied
time
Output Load
Max Load
time
Fault timer
tfault
Fault
timer
starts
Controller
latches off
No restart
when fault
disappears
tfault



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