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| NCP1230_15 Datasheet, PDF (15/21 Pages) ON Semiconductor – Low-Standby Power High Performance PWM Controller | |||
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NCP1230
12.6V
7.7V
125ms
125ms
125ms
125ms
Figure 35.
The latchâoff phase can also be initiated, more classically,
when Vcc drops below UVLO (7.7 V typical). During this
fault detection method, the controller will not wait for the
125 ms timeâout, or the error flag before it goes into the
latchâoff phase, operating in the skip mode under these
conditions, refer to Figure 36.
12.6 V
VCC PWM
7.7 V
5.6 V
Regulation
Fault
Regulation
2.5 ms
Timer SS
1V
Flag
125 ms
125 ms
PFC
VCC
Figure 36.
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