NCP1230 Datasheet, PDF (17/21 Pages) ON Semiconductor – Low-Standby Power High Performance PWM Controller

Vdd_fb
NCP1230
Vdd
20k
2 ^FB
55k
10V 25k
Skip
Comparators
+
-
Error
CS
PWM
-
+
Soft−Start
Ramp (1V max)
Figure 39.
2.5 msec
SS Timer
OSC
V_CC
12.6 V
0 V (Fresh PON)
or
6 V (OCP)
Current
Sense
Max I_P
2.5 ms
Figure 40. Soft−Start is Activated during a Startup
Sequence or an OCP Condition
http://onsemi.com
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