Diodes AP1682 User Manual
Single Stage Primary Side Regulation PFC Controller For LED Driver AP1682
Data Sheet
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 p rotection 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
Applications
• Single Stage Power Factor Correction Power
Supply for LED Lighting
SOIC-8
Figure 1. Package Type of AP1682
Dec. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
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Data Sheet
Single Stage Primary Side Regulation PFC Controller For LED Driver AP1682
Pin Configuration
M Package
(SOIC-8)
NC
VS
8
1
2
VCC
7
OUT
VPK
CS
3
4
GND
6
5
FB
Figure 2. Pin Configuration of AP1682 (Top View)
Pin Description
Pin Number Pin Name Function
1
2
3
4
5
NC No connection
VS
VPK
CS Primary current sensing
FB
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
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
6
7
8
GND Ground. Current return for gate driver and control circuits of the IC
OUT Gate driver output
VCC Supply voltage of gate driver and control circuits of the IC
Dec. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
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Data Sheet
Single Stage Primary Side Regulation PFC Controller For LED Driver AP1682
Functional Block Diagram
Figure 3. Functional Block Diagram of AP1682
Dec. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
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Data Sheet
Single Stage Primary Side Regulation PFC Controller For LED Driver AP1682
Ordering Information
AP1682 -
Package
Circuit Type
Package
M: SOIC-8
Temperature
Range
Part Number Marking ID Packing Type
G1: Green
TR: Tape & Reel
Blank: Tube
SOIC-8
-40 to 105°C
AP1682M-G1 1682M-G1 Tube
AP1682MTR-G1 1682M-G1 Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Dec. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
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