NCP1650_05 ONSEMI [ON Semiconductor], NCP1650_05 Datasheet - Page 13

• Manufacturer Part Number: NCP1650_05
• Description: Power Factor Controller
• Manufacturer: ONSEMI [ON Semiconductor]

AC INPUT
AC COMP
AC REF
P
COMP
FB/SD
LOOP
Pmax
COMP
GND
15
7
6
9
8
5
4
3
3.68 V
4.24 V
4 V
COMPENSATION
ERROR
CURRENT
AVERAGE
+
−
+
−
AMP
−
+
+
−
a
p
a
REFERENCE
p
MULTIPLIER
MULTIPLIER
25 k
200 mA
200 mA
POWER
20 mA
4.5 V
VOLTAGE/POWER
ORing NETWORK
RAMP COMP
20 k
60 k
2.5 V
0.75 V
Figure 30. Detailed Block Diagram
AC ERROR
line
+
−
+
−
POWER
+ k ⋅ I
AMP
AMP
13
http://onsemi.com
in
= V
NCP1650
COMPENSATION
0.85 V
ref
OSCILLATOR
AC REFERENCE
1.08 V
13
RAMP
14
1
16 k
BUFFER
V−I
−
+
V
ref
C
CC
T
OVERVOLTAGE
COMPARATOR
SHUTDOWN
REFERENCE
REGULATOR
−
+
4 V
−
+
PWM
UVLO
S
S
R
4 V
I
avg
AMPLIFIER
CURRENT
SENSE
Q
10 11 I
avg fltr
DRIVER
6.5 V
+
−
OUTPUT
V
2
16
I
12
S−
ref