NCP1234 ONSEMI [ON Semiconductor], NCP1234 Datasheet - Page 16

• Manufacturer Part Number: NCP1234
• Description: Fixed Frequency Current Mode Controller for Flyback Converters
• Manufacturer: ONSEMI [ON Semiconductor]

Fault timer
(internal)
V
V
V
V
CC(min)
HV(min)
Output
CC(on)
CC(off)
DRV
V
V
CC
HV
regulation when
V
HV
Controller
Loss of
stops at
is too low
V
Figure 29. Fast Application Off − On Sequence
CC(off)
The board is
unplugged
http://onsemi.com
Fault timer
reset by
V
CC(off)
16
up when V
VCC charges
high enough
restarts at
Switching
V
CC(on)
HV
is
time
time
time
time
time