Datasheet FEB-L020-1 Datasheet (Fairchild)

User Guide for

FEB-L020-1

Dimmable LED Bulb at Low Line

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

6. Bill of Materials ........................................................................................................................ 9

7. Transformer and Winding Specifications ............................................................................... 11

8. Performance of Evaluation Board ........................................................................................... 12

8.1. Startup .......................................................................................................................... 12

8.2. Operation Waveforms .................................................................................................. 12

8.3. Constant Current Regulation ........................................................................................ 13

8.4. Open/Short-LED Protections ....................................................................................... 14

8.5. Dimming Operation ...................................................................................................... 15

8.6. System Efficiency ........................................................................................................ 18

8.7. Power Factor and Total Harmonic Distortion .............................................................. 19

8.8. Operating Temperature ................................................................................................ 21

8.9. Electromagnetic Interference (EMI) ............................................................................ 22

9. Revision History ..................................................................................................................... 23

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 Primary-Side Regulator (PSR) single-stage controller. The input voltage range is 90V 22V 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.

– 140V

RMS

. This document contains general description of FL7730, the power supply

MAX

.

and there is one DC output with a constant current of 380mA at

RMS

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  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

Input Voltage

Input Frequency fIN 50-60Hz 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

Eff

PF / THD

T

FL7730

T

MOSFET

T

TRANSFORMER

T

DAMPER

T

STR.RESISTOR

90V Minimum Input Voltage

IN,MIN

140V Maximum Input Voltage

MAX

110~120V Nominal Input Voltage

10V Minimum Output Voltage

28V Maximum Output Voltage

22V Nominal Output Voltage

380mA Nominal Output Current

±65mA Output Current Ripple

<±3.9% Line Input Voltage Change:90~140VAC

<±2.1% Output Voltage Change:10~28V

Note: No Dimmer Connected

90VAC

110VAC

120VAC

82.9% Efficiency at 140VAC Line Input Voltage

140VAC

80.7% Efficiency at 90VAC Line Input Voltage

82.2% Efficiency at 110VAC Line Input Voltage

82.5% Efficiency at 120VAC Line Input Voltage

Note: No Dimmer Connected

0.98 / 7.4% PF / THD at 90VAC Line Input Voltage

90VAC

0.96 / 9.5% PF / THD at 110VAC Line Input Voltage

110VAC

0.95 / 10.4% PF / THD at 120VAC Line Input Voltage

120VAC

0.91 / 12.4% PF / THD at 140 VAC Line Input Voltage

140VAC

Note: Open-Frame Condition (TA=25°C)

50ºC FL7730 Temperature

53ºC Primary MOSFET Temperature

47ºC Secondary Diode Temperature

DIODE

52ºC Transformer Temperature

57ºC Active Damper Temperature

56ºC Startup Resistor Temperature

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

Figure 8. Printed PCB, Top Side

Figure 9. Printed PCB, Bottom Side

5. Schematic

Figure 10. Schematic of Evaluation Board

6. Bill of Materials

Item

No.

1 Q1 MB8S 1 Bridge Diode

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

3 Q3 FL7730MY_F116 1 Main Controller

4 Q4 FQU5N60C 1 5A / 600V Main Switch 5 F1 SS-5-1A 1 1A / 250V Fuse Bussmann

6 L1, L2 R06472KT00 2 4.7mH Filter Inductor Bosung 7 D1 ES1J 1 1A / 600V Diode

8 D2 1N5241 1 11V Zener Diode

9 D3 1N4003 1 1A / 200V Diode

10 D4 RS1M 1 1A / 1000V Diode

11 D5 ES3D 1 3A / 200V Fast Rectifier 12 C1, C2 MPE 400V334K 14S 1 330nF / 400V Film Capacitor Sungho

13 C3 C0805C104K3RACTU 1 100nF / 25V SMD Capacitor 2012 Kemet 14 C4 C1206C335K3PACTU 1 3.3µF / 25V SMD Capacitor 3216 Kemet 15 C5 C0805C100M3GACTU 1 10pF / 25V SMD Capacitor 2012 Kemet 16 C6 C2012Y5V1E225Z 1 2.2µF / 25V SMD Capacitor 2012 TDK 17 C7 KMG 47µF / 35V 1 47µF / 35V Electrolytic Capacitor Samyoung 18 C8 C1206C103KDRACTU 1 10nF / 1kV SMD Capacitor 3216 Kemet 19 C9 SCFz2E472M10BW 1 4.7nF / 250V Y-Capacitor Samwha 20 C10 KMG 330µF / 35V 1 330µF / 35V Electrolytic Capacitor Samyoung 21 C11 RM 1000µF / 35V 1 1000µF / 35V Electrolytic Capacitor Samwha 22 R1 SR03700005600KR500 1 560Ω / 0.5W Metal Resistor Vishay 23 R2 RNF12JTD100R 1 100Ω / 0.5W Metal Resistor Stackpole Electrical 24 R3 RC1206JR-0720KL 1 20kΩ SMD Resistor 3216 Yageo 25 R4 RC1206JR-071ML 1 1MΩ SMD Resistor 3216 Yageo 26 R5 RC0805JR-0775KL 1 75kΩ SMD Resistor 2012 Yageo 27 R6 RC0805JR-0762KL 1 62kΩ SMD Resistor 2012 Yageo 28 R7 RC0805JR-070R0L 1 0Ω SMD Resistor 2012 Yageo 29 R8 RC0805JR-07150KL 1 150kΩ SMD Resistor 2012 Yageo 30 R9 RC0805JR-0720KL 1 20kΩ SMD Resistor 2012 Yageo 31 R10 RNF12GTD100K 1 100kΩ / 0.5W Metal Resistor Stackpole Electrical 32 R11, R12 RC1206JR-07510KL 2 510kΩ SMD Resistor 3216 Yageo 33 R13 RC0805JR-0710RL 1 10Ω SMD Resistor 2012 Yageo

Part

Reference

Part Number Qty. Description Manufacturer

Fairchild

Semiconductor

Fairchild

Semiconductor

Fairchild

Semiconductor

Fairchild

Semiconductor

Fairchild

Semiconductor

Fairchild

Semiconductor

Fairchild

Semiconductor

Fairchild

Semiconductor

Fairchild

Semiconductor

Bill of Materials (Continued)

Item

No.

34 R14 RC1206JR-071R2L 1 1.2Ω SMD Resistor 3216 Yageo 35 R15 RC1206FR-071RL 1 1.0Ω SMD Resistor 3216 Yageo 36 R16 RC0805JR-07200RL 1 200Ω SMD Resistor 2012 Yageo 37 R17 RC1206JR-0751KL 1 51kΩ SMD Resistor 3216 Yageo

Part

Reference

Part Number Qty. Description Manufacturer

7. Transformer and Winding Specifications

Figure 11. Transformer Specifications & Construction

NP2(3 4)

NA(2 6)

N

S

(NS- NS+)

NP1(5 3)

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

8. Performance of Evaluation Board

8.1. Startup

Startup time is 0.8s. 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

[110VAC], C1 [VIN], C2 [VCS] C3 [VDD], C4,[I

IN

8.2. 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.

V

= 90VAC

IN

VIN = 120VAC

V

= 110VAC

IN

V

= 140VAC

IN

], (No Dimmer Connected)

OUT

Figure 14. Operation Waveforms – VO [22V], IO [380mA], C1 [VCS], C3, [VIN], C4 [I

OUT

]

8.3. Constant Current Regulation

Constant current deviation in the output voltage range from 10V to 28V is less than 2.1% at each line input voltage. Line regulation at the rated output voltage (22V) is less than 3.9%.

35

30

OVP

25

V

OUT

[V]

20

15

90Vac

110Vac

120Vac

140Vac

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 Outp ut Voltage Change (10~28V)

Input Voltage Min. Current Max. Current Tolerance

90VAC / 60Hz 352mA 365mA ±1.8%

110VAC / 60Hz 368mA 384mA ±2.1%

120VAC / 60Hz 374mA 388mA ±1.8%

140VAC / 60Hz 381mA 395mA ±1.8%

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

Output Voltage 90V

20V 355mA 372mA 377mA 383mA ±3.8%

22V 360mA 372mA 377mA 386mA ±3.5%

24V 357mA 374mA 383mA 386mA ±3.9%

110VAC 120VAC 140VAC Tolerance

AC

)

8.4. 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

In open-LED condition, output voltage is limited around 32V by OVP in V over-voltage protection level can be controlled by turn ratio of auxiliary and secondary windings.

[110VAC], C1 [VCS], C2 [VDD], C3 [VIN], C4 [I

IN

]

OUT

. The output

DD

Figure 17. Open-LED Condition – V

[110VAC], C1 [VCS], C2 [VDD], C3 [VIN]

IN

8.5. Dimming Operation

Dimming operation waveforms are shown in Figure 18 - Figure 20. Active damper, RC bleeder, and dimming control in FL7730 implement flicker-free dimming operation. Spike current at dimmer firing is less than 1.2A.

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

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

[120VAC], C1 [VIN], C2 [VCS], C4 [IIN]

IN

[120VAC] ,C1 [VIN], C2 [VCS], C4 [IIN]

IN

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

]

[I

IN

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.

[120VAC], C1 [VIN], C2 [VCS], C4

IN

Figure 21. Dimming Curve (Effective RMS Input Voltage vs. Output Current) – Line Voltage [120VAC]

Table 6. TRIAC Dimmer Compatibility

Manufacturer Dimmer Condition

LUTRON S-600P-WH 120V / 60Hz 330mA 40mA (12%) No

LUTRON CN-600P-WH 120V / 60Hz 328mA 11mA (3%) No

LUTRON GL-600H 120V / 60Hz 365mA 8mA (2%) No

LUTRON TG-603PGH-WH 120V / 60Hz 252mA 12mA (5%) No

LUTRON TG-600PH-WH 120V / 60Hz 333mA 14mA (4%) No

LUTRON LG-600P 120V / 60Hz 327mA 3mA (1%) No

LUTRON CTCL-153PD 120V / 60Hz 320mA 58mA (18%) No

LUTRON S-600-WH 120V / 60Hz 324mA 0mA (0%) No

LUTRON DV-600P-WH 120V / 60Hz 323mA 0mA (0%) No

LUTRON DV-603PG-WH 120V / 60Hz 260mA 3mA (1%) No

LUTRON DV-10P 120V / 60Hz 334mA 28mA (8%) No

LUTRON DVLV-600P 120V / 60Hz 316mA 4mA (1%) No

LUTRON AY-600P-WH 120V / 60Hz 329mA 8mA (2%) No

LUTRON D-600PH-DK 120V / 60Hz 309mA 0mA (0%) No

LUTRON Q-600P-WH 120V / 60Hz 333mA 21mA (6%) No

LUTRON SLV-600P 120V / 60Hz 330mA 7mA (2%) No

LUTRON GLT05 120V / 60Hz 316mA 22mA (7%) No

LEVITON 6633-PL 120V / 60Hz 383mA 11mA (3%) No

LEVITON 6683 120V / 60Hz 384mA 0mA (0%) No

LEVITON IP106 120V / 60Hz 380mA 36mA (9.5%) No

LEVITON 1C4005 120V / 60Hz 344mA 0mA (0%) No

LEVITON 6631-LW 120V / 60Hz 340mA 0mA (0%) No

Legrand F 165H 120V / 60Hz 344mA 3mA (0.9%) No

Maximum

Current

Minimum

Current

Flicker

The FL7703 Low-Line Evaluation Board demonstrates good dimmer compatibility without flicker. Minimum LED current is less than 5% for most dimmers.

8.6. System Efficiency

Power efficiency is 80.7 ~ 82.9% in 90 ~ 140V

90

88

86

84

input voltage range.

AC

Eff. [%]

82

80

78

76

74

72

70

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

Table 7. System Efficiency

Input

Voltage

90V

9.68W 360mA 21.70V 7.81W 80.7%

AC

110V

9.96W 376mA 21.77V 8.19W 82.2%

AC

120V

10.02W 380mA 21.77V 8.27W 82.5%

AC

140V

10.15W 386mA 21.79V 8.41W 82.9%

AC

90Vac 110Vac 120Vac 140Vac

Input Voltage

Input Power

Output

Current

Output

Voltage

Output

Power

Efficiency

8.7. Power Factor and Total Harmonic Distortion

FL7730 shows excellent power factor and THD performance. Power factor is very high with enough margins from 0.9. THD is much less than 30% specification.

PF THD

Figure 23. Power Factor & Total Harmon i c Distortion (50Hz)

Input Voltage

PF THD

Figure 24. Power Factor & Total Harmon i c Distortion (60Hz)

Input Voltage

Table 8. Power Factor and Total Harmonic Distortion

Input Voltage Output Current Output Voltage Frequency PF THD

90VAC 360mA 21.70V

110VAC 376mA 21.77V

120VAC 380mA 21.77V

140VAC 386mA 21.79V

50Hz 0.99 7.1%

60Hz 0.98 7.4%

50Hz 0.97 9.4%

60Hz 0.96 9.5%

50Hz 0.96 10.2%

60Hz 0.95 10.4%

50Hz 0.92 12.1%

60Hz 0.91 12.4%

8.8. Operating Temperature

Temperature of all the components on this board is less than 60ºC.

Figure 25. Board Temperature - Top View, V

Figure 26. Board Temperature - Bottom View, V

[120VAC], IO [380mA]

IN

[120VAC], IO [380mA]

IN

8.9. Electrom agnetic Interference (EMI)

The all measurement was conducted in observance of CISPR22 criteria.

Figure 27. EMI Results – V

[110V], V

IN

OUT

[22V], I

[380mA]

OUT

9. Revision History

Rev. Date Description

1.0.0. Oct. 2011. Initial Release

Manufacturer & Part number are added in BOM FL7730 is changed to FL7730MY_F116 (no frequency hopping)

1.1.0 July. 2012.

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.

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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.

Dimmer compatibility table is updated PF/THD at 50Hz is added

EMI test result is updated

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.