Preliminary Datasheet
HIGH PERFORMANCE POWER FACTOR CORRECTOR
Pin Description
Pin Number
1
2
3
4
5
6
7
8
AP1662
Pin Name
INV
COMP
MULT
CS
ZCD
GND
GD
VCC
Function
Inverting input of the error amplifier
Output of the error amplifier
Input of the multiplier
Input of the current control loop comparator
Zero current detection input. If it is connected to GND, the
device is disabled
Ground. Current return for gate driver and control circuits of
the IC
Gate driver output
Supply voltage of gate driver and control circuits of the IC
Functional Block Diagram
COMP
INV
1
2
3
MULT
4
CS
Multiplier
Overvoltage
Detection
40
K
10
pF
VCC
Voltage
Regulation
VCC
8
24V
R2
Internal
R1 Supply 7.5V
UVLO
R
S
Q
7
Driver
GD
Vref
Zero Current
Detector
Starter
2.1V
1.6V
Enable
5
ZCD
Disable
6
GND
Figure 3. Functional Block Diagram of AP1662
May. 2011
Rev. 1. 0
3
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
