NCP1201 Datasheet, PDF (3/20 Pages) ON Semiconductor – PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power with Fault Protection Modes

BOK ¹
FB ²
3
CS
NCP1201
I_ref
+
−
50 mA
Oscillator
+
10.5 V/12.5 V
−
60 or 100 kHz Clock
+ ^Output
Maximum 83%
+
−
1.92 V
Skip Cycle
Duty Cycle
−
Comparator
80 K 1.07 V
+ Output
Set
−
Q
Reset
24 K
+ ^Output
−
8
HV
+
− ^{HV Current}
Source
7 _NC
6
V_CC
4
GND
250 ns
L.E.B.
20 k 57 k
25 k
+
−
V_ref
TSD
+
− _Output
Startup
Blanking
0.9 V
Overload
Internal
Regulator
5
250 mA
DRV
V_ref
Figure 2. Simplified Functional Block Diagram
http://onsemi.com
3