NCP1230 ON Semiconductor, NCP1230 Datasheet - Page 17

• Manufacturer Part Number: NCP1230
• Description: Fixed Frequency Controller Featuring Pfc Go To Standby Function
• Manufacturer: ON Semiconductor

Figure 40. Soft−Start is Activated during a Startup
Current
Sense
0 V (Fresh PON)
V
CC
6 V (OCP)
2
Sequence or an OCP Condition
or
FB
20k
Vdd
2.5 ms
10V
Max I
12.6 V
55k
P
25k
Skip
Comparators
http://onsemi.com
+
−
Figure 39.
Soft−Start
Ramp (1V max)
17
Error
2.5 msec
SS Timer
Vdd
CS
OSC
−
+
PWM