Fairchild FEBFL7730_L20H008A User Manual

User Guide for

FEBFL7730_L20H008A

8.4W LED Bulb Using FL7730

Featured Fairchild Product:

FL7730

Direct questions or comments

about this evaluation board to:

“Worldwide Direct Support”

Fairchild Semiconductor.com

Table of Contents

1. Introduction ............................................................................................................................... 3

1.1. General Description .......................................................................................................... 3

1.2. Features ............................................................................................................................ 3

1.3. Internal Block Diagram .................................................................................................... 4

2. General Specifications .............................................................................................................. 5

3. Photographs............................................................................................................................... 6

4. Printed Circuit Board ................................................................................................................ 7

5. Schematic .................................................................................................................................. 8

2.1 Bill of Materials ............................................................................................................... 9

2.2 Transformer and Winding Specifications ...................................................................... 10

6. Performance of Evaluation Board ........................................................................................... 11

6.1. Startup ............................................................................................................................ 11

6.2. Operation Waveforms .................................................................................................... 11

6.3. Constant Current Regulation .......................................................................................... 12

6.4. Open/Short-LED Protections ......................................................................................... 13

6.5. Dimming Operation ........................................................................................................ 14

6.6. System Efficiency .......................................................................................................... 16

6.7. Power Factor and THD .................................................................................................. 16

6.8. Operating Temperature .................................................................................................. 17

6.9. EMI................................................................................................................................. 18

7. Revision History ..................................................................................................................... 19

This user guide supports the evaluation kit for the FL7730. It should be used in conjunction with the FL7730 datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at www.fairchildsemi.com

1. Introduction

This document describes the proposed solution for low-line voltage LED ballast using the FL7730 PSR single-stage controller. The input voltage range is 180V there is one DC output with a constant current of 380mA at 22V contains general description of FL7730, the power supply specification, schematic, bill of materials, and the typical operating characteristics.

1.1. General Description

The FL7730 is an active Power Factor Correction (PFC) controller using single-stage flyback topology. Dimming control with no flicker is implemented by an analog sensing method. Primary-side regulation and single-stage topology reduce external components such as input bulk capacitor and feedback circuitry and minimize cost. To improve good power factor and Total Harmonic Distortion (THD), constant on-time control is utilized with internal error amplifier and a low-bandwidth compensator. Precise constant-current control regulates accurate output current, independent of input voltage and output voltage. Operating frequency is proportionally changed by output voltage to guarantee DCM operation with higher efficiency. FL7730 provides protections such as open-LED, short-LED, and over-temperature protection.

– 265V

RMS

. This document

MAX

.

RMS

and

1.2. Features

 Compatible with Traditional TRIAC Control  Cost-Effective Solution without Input Bulk Capacitor and Feedback Circuitry  Power Factor Correction (PFC)  Accurate Constant-Current (CC) Control  Line Voltage Compensation for CC Control  Linear Frequency Control for Better Efficiency and Simpler Design  Open-LED Protection  Short-LED Protection  Cycle-by-Cycle Current Limiting  Over-Temperature Protection with Auto Restart  Low Startup Current: 20μA  Low Operating Current: 5mA  Frequency Hopping for EMI  V

Under-Voltage Lockout (UVLO)

DD

 Gate Output Maximum Voltage Clamped at 18V  SOP-8 Package Available

1.3. Internal Block Diagram

Figure 1. Internal Block Diagram

2. General Specifications

All data in Table 1 was measured at an ambient temperature of 25°C.

Table 1. Summary of Features and Performance for LED Lighting Bulb

Description Symbol Value Comments

V

IN,MIN

Input Voltage

Input Frequency fIN 60Hz Line Frequency

Output Voltage

Current

Efficiency

PF/THD

Temperature

VIN,

V

IN,NOMINAL

V

OUT,MIN

V

OUT,MAX

V

OUT,NOMINAL

I

OUT,NOMINAL

I

OUT,RIPPLE

CC Deviation

Note: No Dimmer Connected

Eff

180VAC

Eff

220VAC

Eff

230VAC

Eff

265VAC

Note: No Dimmer Connected

PF/THD

Note: Open-Frame Condition (T

T

FL7730

T

MOSFET

T

DIODE

T

TRANSFORMER

T

DAMPER

T

STR.RESISTOR

180V Minimum Input Voltage

265V Maximum Input Voltage

MAX

220~230V Nominal Input Voltage

10V Minimum Output Voltage

28V Maximum Output Voltage

22V Nominal Output Voltage

380mA Nominal Output Current

±65mA Output Current Ripple

<±1.9% Line Input Voltage Change: 180~265V

<±3.1% Output Voltage Change: 10~28V

84.5% Efficiency at 180VAC Line Input Voltage

84.4% Efficiency at 220VAC Line Input Voltage

84.4% Efficiency at 230VAC Line Input Voltage

83.8% Efficiency at 265VAC Line Input Voltage

0.97/13.7% PF/THD at 180VAC Line Input Voltage

180VAC

0.93/16.6% PF/THD at 220VAC Line Input Voltage

220VAC

0.92/17.3% PF/THD at 230VAC Line Input Voltage

230VAC

0.87/19.7% PF/THD at 265VAC Line Input Voltage

265VAC

=25ºC)

A

46ºC FL7730 Temperature

53ºC Primary MOSFET Temperature

45ºC Secondary Diode Temperature

48ºC Transformer Temperature

49ºC Active Damper Temperature

55ºC Startup Resistor Temperature

AC

3. Photographs

Figure 2. Top View of Evaluation Board Figure 3. Bottom View of Evaluation Board

Dimensions: 62.5mm (L)  26.8mm (W)  12.0 (H)

Figure 4. Side View in Bulb Case Type 1 Figure 5. Bottom View in Bulb Case Type 1

Bulb Case Type 1 : 32mm (Case Diameter)  40mm (Case Depth)

Figure 6. Side View in Bulb Case Type 2 Figure 7. Bottom View in Bulb Case Type 2

Bulb Case Type 2 : 34mm (Case Diameter)  44mm (Case Depth)

4. Printed Circuit Board

16.1

19.0

Figure 8. Printed PCB, Top Side

26.8

Figure 9. Printed PCB, Bottom Side

5. Schematic

2.2u

GND

CS

1A/250V

F

1

100n

C

1

20k

R

9

10p

C

5

C

6

7

8

COMI

VS

GATE

GND

2

1

3

150k

R

8

300/0.5W

R

2

FQN1N50C

ES1J

Q2

0.5W

1M

100n

R

4

250kΩ

R

10

R

C

4

1u

R

0

7

6

5

Dim

Q3 FL7730

6

200k

D

2

11V

510k

R

5

VDD

4

10mH

1k/0.5W

D

1

C

2

L

1

R

1

MB8S

Q1

100nF

C

3

43k

R

3

4.7mH L

2

R

0

16

1.2Ω R

14

1.0Ω R

15

FQU2N60C

4.7nF C

9

47u

C

7

10Ω

R

13

Q4

1N4003

D

3

RS1M

N2

510k

R

11

510k

R

12

D

4

10n

C

8

N1

N3

35V/330uF

C

10

ES3D

D

5

35V/1000uF

C

11

51k

17

V

R

O

Figure 10. Schematic of Evaluation Board

2.1 Bill of Materials

No. Part Part number Qty Description Manufacturer

1 Q1 MB8S 1 Bridge Diode Fairchild

2 Q2 FQN1N50C 1 1A/500V Active Damper MOSFET Fairchild

3 Q3 FL7730 1 Main Controller Fairchild

4 Q4 FQU2N60C 1 5A/600V Main Switch Fairchild

5 F1 SS-5-1A 1 1A/250V Fuse Bussmann

6 L1 R06103KT00 1 10mH Filter Inductor Bosung

7 L2 R06472KT00 1 4.7mH Filter Inductor Bosung

8 D1 ES1J 1 1A/600V Diode Fairchild

9 D2 1N5241 1 11V Zener Diode Fairchild

10 D3 1N4003 1 1A/200V Diode Fairchild

11 D4 RS1M 1 1A/1000V Diode Fairchild

12 D5 ES3D 1 3A/200V Fast Rectifier Fairchild

13 C1 MPE 400V104K 14S 1 104/400V Film Capacitor Sungho

14 C2 MPE 400V104K 14S 1 104/400V Film Capacitor Sungho

15 C3 C0805C104K3RACTU 1 104/25V SMD Capacitor 2012 Kemet

16 C4 C1206C105K3PACTU 1 105/25V SMD Capacitor 3216 Kemet

17 C5 C0805C100M3GACTU 1 10/25V SMD Capacitor 2012 Kemet

18 C6 C2012Y5V1E225Z 1 225/25V SMD Capacitor 2012 TDK

19 C7 KMG 47µF/35V 1 47µF/35V Electrolytic Capacitor Samyoung

20 C8 C1206C103KDRACTU 1 103/1kV SMD Capacitor 3216 Kemet

21 C9 SCFz2E472M10BW 1 472/250V Y-Capacitor Samwha

22 C10 KMG 330µF/35V 1 330µF/35V Electrolytic Capacitor Samyoung

23 C11 RM 1000µF/35V 1 1000µF/35V Electrolytic Capacitor Samwha

24 R1 SFR2500001001FR500 1 1kΩ/0.5W Metal Resistor Vishay

25 R2 RNF12JTD300R 1 300Ω/0.5W Metal Resistor Stackpole Elec.

26 R3 RC1206JR-0720KL 1 20kΩ SMD Resistor 3216 Yageo

27 R4 RC1206JR-071ML 1 1MΩ SMD Resistor 3216 Yageo

28 R5 RC0805JR-07510KL 1 510kΩ SMD Resistor 2012 Yageo

29 R6 RC0805JR-07200KL 1 200kΩ SMD Resistor 2012 Yageo

30 R7 0 1

31 R8 RC0805JR-07150KL 1 150kΩ SMD Resistor 2012 Yageo

32 R9 RC0805JR-0720KL 1 20kΩ SMD Resistor 2012 Yageo

33 R10 RNF12GTD250K 1 250kΩ/0.5W Metal Resistor Stackpole Elec.

34 R11, R12 RC1206JR-07510KL 2 510kΩ SMD Resistor 3216 Yageo

35 R13 RC0805JR-0710RL 1 10Ω SMD Resistor 2012 Yageo

36 R14 RC1206JR-071R2L 1 1.2Ω SMD Resistor 3216 Yageo

37 R15 RC1206FR-071RL 1 1.0Ω SMD Resistor 3216 Yageo

38 R16 RC0805JR-070RL 1 0Ω SMD Resistor 2012 Yageo

39 R17 RC1206JR-0751KL 1 51kΩ SMD Resistor 3216 Yageo

2.2 Transformer and Winding Specifications

Figure 11. Transformer Specifications & Construction

Figure 12. Transformer Winding Structure

Table 2. Winding Specifications

No. Winding Pin (S  F) Wire Turns Winding Method

1 NP1 5  3 0.13φ 38 Ts Solenoid Winding

2 Insulation: Polyester Tape t = 0.025mm, 2 Layer

3 NS NS-  NS+ 0.3φ (TIW) 24 Ts Solenoid Winding

4 Insulation: Polyester Tape t = 0.025mm, 2 Layer

5 NA 2  6 0.13φ 18 Ts Solenoid Winding

6 Insulation: Polyester Tape t = 0.025mm, 2 Layer

7 NP2 3  4 0.13φ 38 Ts Solenoid Winding

8 Insulation : Polyester Tape t = 0.025mm, 6 Layer

Table 3. Electrical Characteristics

Pin Specification Remark

Inductance 1– 2 1mH ±10% 50kHz, 1V

Leakage 1– 2 8µH 50kHz, 1V Short All Output Pins

6. Performance of Evaluation Board

6.1. Startup

Startup time is 0.7s. There is no overshoot at output current and voltage in startup

sequence (refer I

and VDD waveform. VDD indicates a reflected output voltage).

OUT

Figure 13. Startup – V

[220VAC], C1 [VIN], C2 [VCS] C3 [VDD], C4,[I

IN

6.2. Operation Waveforms

In steady state, line compensation regulates output current regardless of input voltage variations. Output current ripple is ±65mA with a rated output current of 380mA.

VIN = 180VAC

= 230VAC

V

IN

], (No Dimmer Connected)

OUT

VIN = 220VAC

V

= 265VAC

IN

Figure 14. Operation Waveforms – V

[22V], IO [380mA], C1 [VCS], C3, [VIN], C4 [I

O

OUT

]

6.3. Constant Current Regulation

Constant current deviation in the output voltage range from 10V to 28V is less than 3.1% at each line input voltage. Line regulation at the rated output voltage (22V) is less than

1.7%.

35

30

OVP

25

V

OUT

[V]

20

180Vac

220Vac

15

230Vac

265Vac

10

5

0

0 100 200 300 400 500

Output Current [mA]

Figure 15. Constant Current Regulation – Measured by E-Load [CR Mode]

Table 4. Constant Current Regulation by Output Voltage Change (10~28V)

Input Voltage Min. Current Max. Current Tolerance

180VAC / 60Hz 385mA 399mA ±1.8%

220VAC / 60Hz 383mA 398mA ±1.9%

230VAC / 60Hz 382mA 399mA ±2.2%

265VAC / 60Hz 374mA 398mA ±3.1%

Table 5. Constant Current Regulation by Line Voltage Change (90~140V

Output

Voltage

20V 392mA 388mA 387mA 377mA ±1.9%

22V 390mA 387mA 384mA 377mA ±1.7%

24V 386mA 383mA 382mA 375mA ±1.4%

180V

220VAC 230VAC 265VAC Tolerance

AC

)

6.4. Open/Short-LED Protections

In short-LED condition, the OCP level is reduced from 0.7V to 0.2V because the FL7730 lowers the OCP level when V time. The output current in the short-LED condition is less than 1.5A, which doesn’t damage any external components.

voltage is less than 0.4V during output diode conduction

S

Figure 16. Short-LED Condition – V

[220VAC], C1 [VCS], C2 [VDD], C3 [VIN], C4 [I

IN

OUT

]

In open-LED condition, output voltage is limited around 32V by OVP in V

. The output

DD

over-voltage protection level can be controlled by turn ratio of auxiliary and secondary windings.

Figure 17. Open-LED Condition – V

[220VAC], C1 [VCS], C2 [VDD], C3 [VIN]

IN

6.5. Dimming Operation

Dimming operation waveforms are shown in Figures 18-20. Active damper, RC bleeder, and dimming control in FL7730 implement flicker-free dimming operation. Spike current at dimmer firing is less than 1A.

Figure 18. Dimming Operation Waveforms – Max. Dimming Angle, V

Figure 19. Dimming Operation Waveforms – 90º Dimming Angle, V

[220VAC], C1 [VIN], C2 [VCS], C4 [IIN]

IN

[220VAC] ,C1 [VIN], C2 [VCS], C4 [IIN]

IN

Figure 20. Dimming Operation Waveforms – Min. Dimming Angle, V

Output current is controlled by dimming function when rotating dimmer switch as in the dimming curve in Figure 21. The dimming control block in FL7730 smoothly changes regulated output current by detecting dimming angle.

[220VAC], C1 [VIN], C2 [VCS], C4 [IIN]

IN

Figure 21. Dimming Curve (Effective RMS Input Voltage vs. Output Current) – Line Voltage [220VAC]

Table 6. TRIAC Dimmer Compatibility

Manufacturer Dimmer Condition

NANO SKD-500 220V / 60Hz 365mA 24mA (7%) No

JIN HEUNG SA04003 220V / 60Hz 364mA 53mA (15%) No

ANAM D-500 220V / 60Hz 350mA 58mA (17%) No

OPPLE P068102 220V / 60Hz 378mA 6mA (2%) No

DAESUNG SKD-500 220V/ 60Hz 366mA 6mA (2%) No

6.6. System Efficiency

Power efficiency is 83.8 ~ 84.5% in 180 ~ 365VAC input voltage range.

90 88 86 84 82

Eff. [%]

80 78 76 74 72 70

Maximum

Current

Minimum

Current

Flicker

Figure 22. Power Efficiency (Input Voltage vs. Efficiency)

Table 7. System Efficiency

Input

Voltage

180VAC 10.13W 392mA 21.84V 8.56W 84.5%

220VAC 9.97W 386mA 21.80V 8.41W 84.4%

230VAC 9.94W 385mA 21.79V 8.39W 84.4%

265VAC 9.76W 376mA 21.75V 8.18W 83.8%

6.7. Power Factor and THD

FL7730 shows excellent power factor and THD performance. Power factor is over 0.9 at 180~230V

Table 8. Power Factor and THD

Input Voltage Output Current Output Voltage PF THD

. THD is less than 30% specification.

AC

180VAC 392mA 21.84V 0.97 13.7%

220VAC 386mA 21.80V 0.93 16.6%

230VAC 385mA 21.79V 0.92 17.3%

265VAC 376mA 21.75V 0.87 19.7%

180Vac 220Vac 230Vac 265Vac

Input Power

Input Voltage [V]

Output

Current

Output

Voltage

Output

Power

Efficiency

6.8. Operating Temperature

Temperature of the all components on this board is less than 55ºC.

Figure 23. Board Temperature - Top View, V

Diode

: 45 ºC

Bottom of

MOSFET

: 51 ºC

FL7730

: 46 ºC

Figure 24. Board Temperature - Botto m View, V

[220VAC], IO [380mA]

IN

[220VAC], IO [380mA]

IN

6.9. EMI

The all measurement was conducted in observance of CISPR22 criteria.

Figure 25. EMI Results – V

[220V], V

IN

OUT

[22V], I

[380mA]

OUT

7. Revision History

Rev. Date Description

0.0.1 2/22/12 Initial edit/format pass

0.0.2 3/07/12 BOM revision and minor error correction

WARNING AND DISCLAIMER

Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Users’ Guide. Contact an authorized Fairchild representative with any questions.

This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk. The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this User’s Guide constitute a sales contract or create any kind of warranty, whether express or implied, as to the applications or products involved. Fairchild warrantees that its products meet Fairchild’s published specifications, but does not guarantee that its products work in any specific application. Fairchild reserves the right to make changes without notice to any products described herein to improve reliability, function, or design. Either the applicable sales contract signed by Fairchild and Buyer or, if no contract exists, Fairchild’s standard Terms and Conditions on the back of Fairchild invoices, govern the terms of sale of the products described herein.

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION.

As used herein:

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.

ANTI-COUNTERFEITING POLICY

Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, under Sales Support.

Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise. Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.

EXPORT COMPLIANCE STATEMENT

These commodities, technology, or software were exported from the United States in accordance with the Export Administration Regulations for the ultimate destination listed on the commercial invoice. Diversion contrary to U.S. law is prohibited.

U.S. origin products and products made with U.S. origin technology are subject to U.S Re-export laws. In the event of re-export, the user will be responsible to ensure the appropriate U.S. export regulations are followed.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

ON Semiconductor: FEBFL7730_L20H008A FEBFL7730-L20H008A-GEVB