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

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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

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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.

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Data Sheet

Single Stage Primary Side Regulation PFC Controller For LED Driver AP1682

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Power Supply Voltage
Driver Output Current I
Voltage at VS, VPK, CS VVS, VPK, V
FB Input Voltage
Operating Junction Temperature TJ 150 ºC
Storage Temperature T
Lead Temperature (Soldering, 10 sec) T
Power Dissipation at TA=50°C

Thermal Resistance
(Junction-to-Ambient)

ESD (Machine Model) 200 V
ESD (Human Body Model) 3000 V

V

CC

300 mA

OUT

CS

V

FB

-65 to 150 ºC

STG

300 ºC

LEAD

0.65 W

P

D

θ

JA

-0.3 to 30 V

-0.3 to 7 V

-40 to 10 V

190

°C/W

Note 1: Stresses greater than those listed under “Absolute Maximu m 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 Symbol Min Max Unit

Power Supply Voltage

Ambient Temperature TA -40 105 ºC

9 21 V

V

CC

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

Electrical Characteristics

V

=15V, TA=25°C, unless otherwise specified.

CC

Parameter Symbol Conditions Min Typ Max Unit

UVLO Section

Start-up Threshold VTH (ST)
Minimal Operating Voltage V
VCC OVP Voltage V

(Min) After turn on 7 8 9

OPR

28 32 36

CC_OVP

Standby Curr ent Section
Start-up Current IST

Maximum Operating
Current

(Max) VVS=VPK=3V 1000 1300

I

CC

V

CC=VTH

Before start up

(ST)-0.5V,

Drive Output Section

I

GD-SOURCE

V

CC

I

GD-SINK

V

CC

=1nF

L

=1nF

L

I

GD-SOURCE

V

CC

V

CC

I

SINK

Output High Level Voltage VOH

Output Low Level Voltage VOL
Output Voltage Rise Time tR C

Output Voltage Fall Time tF C
Output Clamp Voltage V

UVLO Saturation Voltage V

O-CLAMP

UVLO

=12V

=20mA

=12V

=20V
=0 to V

=10mA

=20mA

=5mA

CC–ON

VS Input Section

Maximum Ratio VVS/VPK (Max) VVS=VPK=3V 0.8 1 1.2 V
Minimu m Ratio VVS/VPK (Min) VVS=0V, VPK=3V 0.2 V

Current Sense Section

Minimu m On Time tON (Min) 500 750 1000 ns
Short Circuit Protection

Voltage

V

3 4 V

SOCP

Feedback Input Section

FB Pin Input Leakage
Current
Acceleration Start
Threshold

CV Threshold V
Over Voltage Protection V

I

V

FB

V

(ACC) 1.4 1.8 2.2 V

FB

(CV) 3.2 4.2 5.2 V

FB

(OVP) 4.5 6 7.5 V

FB

=4V 2 8

FB

Over Temperature Protection Section
Shutdown Temperature 140
Temperature Hysteresis 20

18 19 20

V

20

µA

10 V

1 V

100 140 190

30 60 90

ns
ns

12 13.5 15 V

1.1 V

µA

o

C

o

C

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Data Sheet

Single Stage Primary Side Regulation PFC Controller For LED Driver AP1682

Typical Performance Characteristics

1100
1000

900
800
700
600
500
400
300

Supply Current (µA)

200
100

0

0 5 10 15 20 25 30

Figure 4. Supply Current vs. Supply Voltage Figure 5. CV Threshold Vs. Supply Voltage

14

13

12

11

10

Output Clamp Voltage (V)

Dec. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

9

8

7

6

5

8 1012141618202224262830

Figure 6. Output Clamp Voltage vs. Figure 7. Start-up Voltage vs.

Supply Voltage Ambient Temperature

Supply Voltage (V)

Supply Voltage (V)

4.2

4.0

3.8

CV Threshold (V)

3.6
8 1012141618202224262830

Supply Voltage (V)

19.4

19.2

19.0

18.8

18.6

Start-up Voltage (V)

18.4

18.2

18.0

-40 -20 0 20 40 60 80 100 120

Ambient Temperature (oC)

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Data Sheet

Single Stage Primary Side Regulation PFC Controller For LED Driver AP1682

Typical Performance Characteristics (Continued)

8.3

8.2

8.1

8.0

7.9

Minimal Operating Voltage (V)

7.8

-40 -20 0 20 40 60 80 100 120

Ambient Temperature (oC)

8.0

7.5

7.0

6.5

6.0

5.5

5.0

4.5

4.0

Start-up Current (µA)

3.5

3.0

2.5

2.0

-40 -20 0 20 40 60 80 100 120

Ambient Temperature (oC)

Figure 8. Minimal Operating Voltage vs. Figure 9. Start-up Current vs. Ambient T emperature

Ambient Temperature

1050

1000

950

900

850

Operating Current (µA)

800

-40 -20 0 20 40 60 80 100 120

Ambient Temperature (oC)

4.50

4.25

4.00

3.75

3.50

CV Threshold (V)

3.25

3.00

-40 -20 0 20 40 60 80 100 120

Ambient Temperature (oC)

Figure 10. Operating Current vs. Figure 11. CV Threshold Vs.

Ambient Temperature Ambient Temperature

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

Typical Performance Characteristics (Continued)

3.0

2.5

2.0

1.5

FB Input Leakage Current (µA)

1.0

-40-20 0 20406080100120

Ambient Temperature (oC)

Figure 12. FB Input Leakage Current vs.

Ambient Temperature

Typical Application

Figure 13. Typical Application 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

Mechanical Dimensions

SOIC-8 Unit: mm(inch)

R0.150(0.006)

Dec. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

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BCD Semiconductor Manufacturing Limited

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IMPORTANT NOTICE

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-

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cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any

cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any

particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use

particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use

of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or

of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or

other rights nor the rights of others.

other rights nor the rights of others.

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