Diodes AP1694A User Manual

AP1694A

Document number: DS37094 Rev. 1 - 2

1 of 15

www.diodes.com

May 2014

AP1694A

A Product Line of

Diodes Incorporated

NE W P R OD UC T

Description

The AP1694A is a high performance AC/DC power factor corrector for mains dimmable LED driver applications. The device uses Pulse Frequency Modulation (PFM) technology to regulate output current while achieving high power factor and low THD. It operates as a BCM (Boundary Conduction Mode) controller which is good for EMI.

The AP1694A 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. It can meet the requirement of IEC6100-3-2 harmonic standard.

The AP1694A features low start-up current, low operation current. It adopts valley on switching mode to achieve high efficiency. It also has rich protection features including over voltage, short circuit, over temperature protection.

The AP1694A provides the dimmable LED driver with a wide dimmer compatibility including leading edge and trailing edge dimmer. The AP1694A can achieve deep dimming down to 1%, while the dimming curve is compliant with the standard of NEMA SSL6.

The AP1694A is available in SO-8 package.

Pin Assignments

(Top View)

1

2

3

4

8

7

6

5

NC

RI

SGND

CS

FB

GND

OUT

VCC

SO-8

Features

 Primary Side Control for Output Current Regulation without Opto-

coupler

 Boundary Conduction Mode (BCM) Operation to Achieve High-

efficiency

 High PF and Low THD (PF > 0.9, THD < 30%)  High Efficiency without Dimmer  Wide Range of Dimmer Compatibility  Dimming Curve Compliant with NEMA SSL6  Low Start-up Current  Tight LED Current  Tight LED Open Voltage  Valley-mode Switching to Minimize the Transition Loss  Mosfet driver up to 25W  Easy EMI  Internal Protections:

 Under Voltage Lock Out(UVLO)  Leading-edge Blanking (LEB)  Output Short Protection  Output Open Protection  Over Temperature Protection

 Flexible for Design with Small Form Factor and Very Low BOM

Cost

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)

Applications

 Mains Dimmable LED Lighting

OFFLINE, HIGH PF, HIGH EFFICIENCY DIMMABLE LED DRIVER CONTROLLER

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.

AP1694A

Document number: DS37094 Rev. 1 - 2

2 of 15

www.diodes.com

May 2014

AP1694A

A Product Line of

Diodes Incorporated

NE W P R OD UC T

T1

OUT

+

VCC

FB

OUT

CS

GND

U1 AP1694A

C 3

R7

R5

R6

R4

D1

C4

R3

Q1

BD1

C1

L1

R8

D2

R1

RI

SGND

R2

R9

RF

L

N

C2

Z1

Q2

F1

TVS1

T1

OUT

+

VCC

FB

OUT

CS

GND

U1 AP1694A

C 3

R7

R5

R6

R4

D1

C4

R3

Q1

BD1

C1

L1

R8

D2

R1

RI

SGND

R2

R9

RF

L

N

C2

Z1

Q2

F1

TVS1

Typical Applications Circuit

Typical Buck Application

Typical Buck-boost Application

AP1694A

Document number: DS37094 Rev. 1 - 2

3 of 15

www.diodes.com

May 2014

AP1694A

A Product Line of

Diodes Incorporated

NE W P R OD UC T

T1

OUT

+

VCC

FB

OUT

CS

GND

U1 AP1694A

C 3

R7

R5

R6

R4

D1

C4

R3

Q1

BD1

C1

L1

R8

D2

R1

RI

SGND

R2

R9

RF

L

N

C2

Z1

Q2

F1

TVS1

D3

R10

C5

Pin Number

Pin Name

Function

1

NC

No connection.

2

RI

The initial on time setting resistor.

3

SGND

Must connect to GND.

4

CS

Primary current sensing.

5

FB

The feedback voltage from auxiliary winding.

6

GND

Ground.

7

OUT

Gate driver output.

8

VCC

Supply voltage of gate driver and control circuits of the IC.

Typical Applications Circuit (Cont.)

Typical Fly-back Application

Pin Descriptions

AP1694A

Document number: DS37094 Rev. 1 - 2

4 of 15

www.diodes.com

May 2014

AP1694A

A Product Line of

Diodes Incorporated

NE W P R OD UC T

Symbol

Parameter

Rating

Unit

VCC

Power Supply Voltage

-0.3 to 35

V

I

OUT

Driver Output Current

150

mA

VCS

Voltage at CS to GND

-0.3 to 7

V

VFB

FB Input Voltage

-40 to 10

V

TJ

Operating Junction Temperature

-40 to +150

°C

T

STG

Storage Temperature

-65 to +150

°C

T

LEAD

Lead Temperature (Soldering, 10 sec)

+300

°C

PD

Power Dissipation (TA = +50C)

0.65

W

θ

JA

Thermal Resistance (Junction to Ambient)

160

°C/W

–

ESD (Human Body Model)

±2000 V –

ESD (Machine Model)

±200

V

Regulator&

Bias

Tons

Detector

Tons

Power_EN

Driver

FB

VCC

OUT

PFM

R

S

Q

Vref

CC_CTRL

TONP_CTRL

CS

GND

Vdd

Protection

& Latch

PRO

CS_OCP

FB_CV FB_OVP

VCC_OVP

Logic

Set Initial Tonp

Constant Turn-on

Time Generation

VcsmaxVcs_valley

RI

SGND

5

2

3

4

6

7

8

Functional Block Diagram

Absolute Maximum Ratings (Note 4) (@T

Note 4: 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.

= +25°C, unless otherwise specified.)

A

AP1694A

Document number: DS37094 Rev. 1 - 2

5 of 15

www.diodes.com

May 2014

AP1694A

A Product Line of

Diodes Incorporated

NE W P R OD UC T

Symbol

Parameter

Min

Max

Unit

VCC

Power Supply Voltage

7

25

V

TA

Ambient Temperature

-40

+105

°C

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

UVLO Section

VTH (ST)

Start-up Threshold

–

13

14.5

16

V

OPR

(Min)

Minimum Operating Voltage

After turn on

5.5

6.5

7.5

V

CC_OVP

VCC OVP Voltage

–

27

29

31

V

–

VCC Delatch Voltage (Note 5)

– 3 4 5 V

Standby Current Section

IST

Start-up Current

V

CC

= V

TH

(ST) -0.5V,

Before start up

– – 20

µA

ICC (OPR)

Operating Current

Static – 900

1300

µA

Drive Output Section

V

GATE

Gate Voltage

–

11

12

14

V

I

SOURCE_L

Low Driver Source Current

–

35

40

45

mA

I

SOURCE_H

High Driver Source Current

–

90

100

120

mA

R

DS(on)

Sink Resistance

– 6 7 8 Ω

Current Sense Section

V

CS_REF

Current Sense Reference

– – 1 – V

V

CS_CLAMP

Current Sense Reference Clamp

–

1.2

1.4 – V

t

ONP_MIN

Minimum t

ONP

–

700 – 1000

ns

t

D(H-L)

Delay to Output (Note 5)

–

50

150

250

ns

Feedback Input Section

IFB

Feedback Pin Input Leakage Current

V

FB

= 2V

– – 4

µA

V

FB_CV

FB CV Threshold

–

3.8 4 4.2

V

FB_OVP

FB OVP Threshold

–

4.5 6 7.5

V

Output Current

–

System Output Current On Final Test Board

– – –

±2

%

Over Temperature Protection Section

–

Shutdown Temperature (Note 5)

–

+150 – –

°C

–

Temperature Hysteresis (Note 5)

– – +20 – °C

Recommended Operating Conditions

Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

A

Note 5: These parameters, although guaranteed by design, are not 100% tested in production.