ncp1651 ON Semiconductor, ncp1651 Datasheet - Page 16

• Manufacturer Part Number: ncp1651
• Description: Single Stage Power Factor Controller
• Manufacturer: ON Semiconductor

680
AC INPUT
FB/SD
9
8
AVERAGE CURRENT
CONVERTER
COMPENSATION
6.5 V
V−I
+
−
.75
3.8 k
V
line
20 mA
REFERENCE
MULTIPLIER
V
ref
k I
.75 V
+
−
AC ERROR
in
AMP
= V
line
ref
+
4 V
10
REF FILTER
−
+
AC REFERENCE
V−I
PWM
BUFFER
V
V
error(ac)
error(ac)
PWM
Logic
AMPLIFIER
CURRENT
SENSE
DRIVER
−
+
DRIVE
1
5
I
S+
Rectified Line
D
C
5
out
2
R
R
DC1
DC2