NCP1234 ONSEMI [ON Semiconductor], NCP1234 Datasheet - Page 21
NCP1234
Manufacturer Part Number
NCP1234
Description
Fixed Frequency Current Mode Controller for Flyback Converters
Manufacturer
ONSEMI [ON Semiconductor]
Datasheet
1.NCP1234.pdf
(33 pages)
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NCP1234
I
OPC
V
HV
V
FB
V
V
FB(OPCE)
FB(OPCF)
Figure 36. Overpower Compensation Current Relation to Feedback Voltage and Input Voltage
V
HV
V
HVsample
time
t
Reset
Peak
wd
Reset
detector
Reset
Reset
Reset
time
Sample
Sample
I
Sample
OPC
Sample
Reset
time
Figure 37. Overpower Compensation Current if the HV Pin is Connected to AC Voltage
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21
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