Data Sheet
Single Stage Primary Side Regulation PFC Controller For LED Driver
AP1682
General Description
The AP1682 is a high performance AC/DC universal
input Primary Side Regulation Power Factor
Controller for LED driver applications. The device
uses Pulse Frequency Modulation (PFM) technology
to regulate output current while achieving high power
factor and low THD.
The AP1682 provides accurate constant current (CC)
regulation while removing the opto-coupler and
secondary control circuitry. It also eliminates the
need of loop compensation circuitry while
maintaining stability. The AP1682 achieves excellent
regulation and high efficiency, yet meets the
requirement of IEC61000-3-2 harmonic standard.
The AP1682 features low start-up current, low
operation current and high efficiency. It also has rich
protection features including over voltage, short
circuit, over current, over temperature protection etc.
The AP1682 is available in SOIC-8 package.
Features
•
Primary Side Control for Output Current
Regulation Without Opto-coupler and Secondary
CV/CC Control Circuitry
Low Start-up Current
High Power Factor and Low THD for Universal
Input Range
Tight CC Regulation Performance for Universal
Input Mains Voltage Range
Eliminates Control Loop Compensation
Circuitry
Built-in Acceleration Start
Open-load and Reload Detection
Over Voltage and Short Circuit Protection
Over Temperature Protection
Over Current Protection
Cost Effective Total PFC LED Driver Solution
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Applications
•
Single Stage Power Factor Correction Power
Supply for LED Lighting
SOIC-8
Figure 1. Package Type of AP1682
Dec. 2011
Rev. 1. 1
1
BCD Semiconductor Manufacturing Limited
Data Sheet
Single Stage Primary Side Regulation PFC Controller For LED Driver
AP1682
Pin Configuration
M Package
(SOIC-8)
NC
VS
VPK
CS
1
2
3
4
8
7
6
5
VCC
OUT
GND
FB
Figure 2. Pin Configuration of AP1682 (Top View)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
NC
VS
VPK
CS
FB
GND
OUT
VCC
No connection
Function
The rectified input voltage sensing pin. The pin is detecting the
instantaneous rectified sine waveform of input voltage
The rectified input voltage peak value sensing pin. The pin is detecting
the rectified sine waveform peak value of input voltage
Primary current sensing
This pin captures the feedback voltage from the auxiliary winding. FB
voltage is used to control no load output voltage and determine
acceleration stop point at start-up phase
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
Dec. 2011
Rev. 1. 1
2
BCD Semiconductor Manufacturing Limited
Data Sheet
Single Stage Primary Side Regulation PFC Controller For LED Driver
AP1682
Absolute Maximum Ratings (Note 1)
Parameter
Power Supply Voltage
Driver Output Current
Voltage at VS, VPK, CS
FB Input Voltage
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
Power Dissipation at T
A
=50°C
Thermal Resistance
(Junction-to-Ambient)
ESD (Machine Model)
ESD (Human Body Model)
Symbol
V
CC
I
OUT
V
VS
, V
PK
, V
CS
Value
-0.3 to 30
300
-0.3 to 7
-40 to 10
150
-65 to 150
300
0.65
190
200
3000
Unit
V
mA
V
V
ºC
ºC
ºC
W
°C/W
V
V
V
FB
T
J
T
STG
T
LEAD
P
D
θ
JA
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Power Supply Voltage
Symbol
V
CC
T
A
Min
9
-40
Max
21
105
Unit
V
ºC
Ambient Temperature
Dec. 2011
Rev. 1. 1
5
BCD Semiconductor Manufacturing Limited
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