Datasheet FEB-L032 Datasheet (Fairchild)

User Guide for

FEB-L032 Evaluation Board

2.7W LED Ballast Using FLS0116

Featured Fairchild Product:

FLS0116

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. Key Features .................................................................................................................... 3

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

2. General Specifications for Evaluation Board ........................................................................... 5

2.1. Photographs of Evaluation Board .................................................................................... 6

2.2. Printed Circuit Board ....................................................................................................... 7

2.3. Schematic ......................................................................................................................... 8

2.4. Bill Of Materials .............................................................................................................. 8

3. Performance of Evaluation Board ............................................................................................. 9

3.1. Typical Waveforms: Startup .......................................................................................... 10

3.2. Operating Frequency & Minimum Duty ........................................................................ 11

3.3. Typical Waveforms: Steady State .................................................................................. 12

3.4. Typical Operating Waveforms: Output Characteristics ................................................. 13

3.5. Typical Waveforms: Abnormal Mode (LED Open) ...................................................... 15

3.6. Typical Waveforms: Abnormal Mode (Inductor Short) ................................................ 16

3.7. System Efficiency .......................................................................................................... 17

3.8. Power Factor at Rated Load Condition .......................................................................... 18

3.9. Total Harmonic Distortion ............................................................................................. 19

3.10. Thermal Performance ..................................................................................................... 20

3.11. EMI Test Results............................................................................................................ 22

4. Revision History ..................................................................................................................... 24

This user guide supports the evaluation kit for the FLS0116. It should be used in conjunction with the FLS0116 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 an universal input, 2.7W LED ballast using the FLS0116. The input voltage range is 90V output with a constant current of 97mA at 28V description of FLS0116, the power supply specification, schematic, bill of materials and the typical operating characteristics.

1.1. General Description

The FLS0116 LED lamp driver is a simple IC with PFC function and integrated switching MOSFET. The special “adopted digital” technique automatically detects input voltage condition and sends an internal reference signal, resulting in high power factor (PF). When AC input voltage is applied to the IC, PFC function is automatically enabled. When DC input voltage is applied to the IC, PFC function is automatically disabled. The FLS0116 does not require a bulk capacitor (electrolytic capacitor) for supply rail stability, which can significantly improve LED reliability.

– 265V

RMS

. This document contains general

MAX

and there is one DC

RMS

.

1.2. Key Features

 Built-in MOSFET (1A/550V)  Digitally Implemented Active PFC Function

(No Additional Circuit Necessary for High PF)

 Built-in HV Supplying Circuit: Self Biasing  AOCP Function with Auto-Restart Mode  Built-in Over-Temperature Protection (OTP)  Cycle-by-Cycle Current Limit  Low Operating Current: 0.85mA (Typical)  Under-Voltage Lockout with 5V Hysteresis  Programmable Oscillation Frequency  Programmable LED Current  Analog Dimming Function  Soft-Start Function  Precise Internal Reference: ±3%

1.3. Internal Block Diagram

Figure 1. Internal Block Diagram

Pin No. Symbol Description

1 CS

2 VCC

3 GND

4 RT

5 ADIM

6 NC No Connection.

7 HV

8 DRAIN

Current Sense. Limits output current, depending on the sensing resistor

voltage. The CS pin is also used to set the LED current regulation.

VCC. Supply pin for stable IC operation ZCD signal detection used for accurate

PFC function.

GROUND. Ground for the IC. RT. Programmable operating frequency using an external resistor. The IC has a

fixed frequency when this pin is open or floating.

Analog Dimming. Connects to the internal current source and can change the

output current using an external resistor. If ADIM is not used, connect a 0.1µF bypass capacitor between ADIM and GND.

High Voltage. Connects to the high-voltage line and supplies current to the IC. High Voltage. Internal switching FET drain pin.

2. General Specifications for Evaluation Board

All data for this table was measured at an ambient temperature of 25°C.

Table 1. Summary of Features and Performance

Description Symbol Value Comments

V

90V Minimum Input Voltage

IN.MIN

Input Voltage Range

AC Input Frequency

Output Voltage

Output Current

Output Power

(1)

(2)

Output Power 2.7W

Efficiency >78% At Full Load

Temperature

PCB Size

Initial Application LED Bulb

Notes:

1. The output current has I in parallel with the LED. Ensure the capacitor voltage rating is high enough to withstand an open-LED condition or use a Zener diode for protection.

2. The output power is not equal to the apparent power due to the slight phase shift between the output voltage and current.

V

IN.NORMAL

V

Freq

V

OUT,MAX

V

OUT,NORMAL

V

I

OUT.NORMAL

CC Deviation < ±1.3%

T

FRD,UF4007

T

CS resistor

T

110V / 220V Normal Input Voltage

265V Maximum Input Voltage

IN.MAX

47Hz Minimum Input Frequency

IN.MIN

64Hz Maximum Input Frequency

IN.MAX

30V Maximum Output Voltage

28V Normal Output Voltage

26V Minimum Output Voltage

OUT,MIN

97mA Normal Output Current

Line Input Voltage Change: 90~265VAC

< 73°C

FLS0116

< 44°C

DM filter

< 47°C

At Full Load (all at open-frame, room temperature / still air)

< 59°C

< 66°C

inductor

20mm (width) x 30mm (length )x 18mm (height)

ripple. To reduce ripple current, use a large electrolytic capacitor

LEDPK

2.1. Photographs of Evaluation Board

Figure 2. Top View (20mm x 30mm)

Figure 3. Bottom View (20mm x 30mm)

Figure 4. Side View (18mm)

2.2. Printed Circuit Board

Figure 5. Top Side

Figure 6. Bottom Side

2.3. Schematic

Figure 7. Evaluation Board Schematic

2.4. Bill Of Materials

Item No.

1 U1 FLS0116M 1 Controller

2 BD MB6S 1 0.5A/600V, Bridge Diode

3 C1 MPE 630V333K 1 333/630VAC, Film Capacitor Sungho

4 C2 MPE 630V473K 1 473/630VAC, Film Capacitor Sungho

5 C3 C1206C225K3PACTU 1

6 C4

7 C5 C1206C103KDRACTU 1

8 D1 UF4007 1 1A/1000V, Ultra-Fast Recovery

9 L1,L2 R06153KT00 2 15mH, Filter Inductor Bosung

10 L3 RFB0810-123L 1 12mH, Inductor Coil Craft

11 R1 RC1206JR-07103RL 1 10kΩ, SMD Resistor 3216 Yageo

12 R2 RC1206JR-07680RL 1 680Ω, SMD Resistor 3216 Yageo

13 R3 RC1206JR-073RL 1 3Ω, SMD Resistor 3216 Yageo

- R4 - 0 Open

Part

Reference

Part Number Qty. Description Manufacturer

Fairchild

Semiconductor

Fairchild

Semiconductor

Kemet

Fairchild

Semiconductor

C0805C104K3RACTU

225/25V SMD Capacitor 3216

1

104/25V SMD Capacitor 2012

103/630V SMD Capacitor 3216

3. Performance of Evaluation Board

Table 2. Test Condition & Equipments

Test Temperature

Test Equipment

AC Source : PCR500L by Kikusui Power Meter : PZ4000 by Yokogawa Oscilloscope : Waverunner 64Xi by LeCroy EMI Test Receiver: ESCS30 by ROHDE & SCHWARZ Two-Line V-Network: ENV216 by ROHDE & SCHWARZ Thermometer : CAM SC640 by FLIR SYSTEMS LED: EHP-AX08EL/GT01H-P03 (3W) by Everlight

TA = 25°C

3.1. Typical Waveforms: Startup

V

Figure 8 through Figure 11 show the typical startup performance at different input voltage conditions. When AC input voltage is applied to the system, the FLS0116 automatically operates in AC Mode after finishing an internally fixed, seven-cycle, softstart period. Figure 10 and Figure 11 show the soft-start characteristics when a DC input voltage is applied.

CH1: VCC, CH2:

DRAIN

, CH3: V

LED

, CH4: I

Figure 8. Soft-Start, AC Mode, 90V

CH1: VCC, CH2:

DRAIN

, CH3: V

LED

, CH4: I

Figure 10. Soft-Start, DC Mode, 100V

AC

DC

LED

CH1: V

, CH2:

CC

DRAIN

, CH3: V

LED

, CH4: I

LED

Figure 9. Soft-Start, AC Mode, 265VAC

CH1: V

, CH2:

CC

DRAIN

, CH3: V

LED

, CH4: I

LED

Figure 11. Soft-Start, DC Mode, 200VDC

3.2. Operating Frequency & Minimum Duty

The programmable switching frequency is between 20kHz ~ 250kHz, determined by selecting the RT resistor value. If no RT resistor is used (RT pin OPEN), the FLS0116 default switching frequency is set to 45kHz. The maximum duty ratio is fixed below 50% and has a fixed minimum typical on-time of 400ns. There are two crucial points to design properly. The first is consideration of the minimum duty ratio at minimum input voltage because the FLS0116 is limited to 50% duty ratio. The second consideration is minimum on-time at maximum input voltage condition. The FLS0116 cannot control output power when the operating conditions are such that the required on-time is less than the 400ns minimum on-time.

Minimum On Time: 2.13µs

Switching Frequency: 44.52kHz

CH1: V

Figure 12. Operating Frequency & Minimum Duty Ratio

, CH2: V

CC

DRAIN

, CH3: V

LED

, CH4: I

LED

3.3. Typical Waveforms: Steady State

V

Figure 13 through Figure 22 show the normal operation waveform by input voltage and input frequency. The output voltage and current maintains a certain output level with 120Hz ripple, as shown in the test results in Table 2.

CH1: VCC, CH2: V

Figure 13. Input Voltage: 90V

DRAIN

, CH3: V

, CH4: I

LED

, Input Frequency: 47Hz

AC

LED

CH1: VCC, CH2:

Figure 14. Input Voltage: 90VAC, Input Frequency:

DRAIN

, CH3: V

64Hz

LED

, CH4: I

LED

H1: VCC, CH2: V

Figure 15. Input Voltage: 110V

DRAIN

47Hz

, CH3: V

AC

LED

, CH4: I

LED

, Input Frequency:

H1: V

, CH2: V

CC

DRAIN

, CH3: V

Figure 16. Input Voltage: 110V

64Hz

, CH4: I

LED

, Input Frequency:

AC

LED

3.4. Typical Operating Waveforms: Output Characteristics

V

CH1: VCC, CH2:

Figure 17. Input Voltage: 180V

DRAIN

47Hz

, CH3:

LED

, Input Frequency:

AC

, CH4: I

LED

CH1: V

, CH2:

CC

DRAIN

, CH3: V

Figure 18. Input Voltage: 180V

64Hz

, CH4: I

LED

, Input Frequency:

AC

LED

CH1: VCC, CH2:

Figure 19. Input Voltage: 220VAC, Input Frequency:

H1: VCC, CH2: V

Figure 21. Input Voltage: 265V

DRAIN

47Hz

DRAIN

47Hz

, CH3: V

AC

, CH4: I

LED

, CH4: I

LED

, Input Frequency:

CH1: V

, CH2:

CC

DRAIN

, CH3: V

LED

, CH4: I

LED

Figure 20. Input Voltage: 220VAC, Input Frequency:

64Hz

H1: V

, CH2: V

CC

Figure 22. Input Voltage: 265V

DRAIN

, CH3: V

AC

LED

, CH4: I

LED

, Input Frequency:

64Hz

Table 3. Output Characteristics by Input Voltage and Frequency

90VAC 110VAC 180VAC 220VAC 265VAC

47Hz 64Hz

V

LED(RMS)

28.01V 95.77mA 28.02V 95.82mA

28.17V 96.54mA 28.17V 96.61mA

28.40V 97.19mA 28.37V 97.11mA

28.41V 97.60mA 28.41V 97.56mA

28.43V 98.25mA 28.43V 98.23mA

I

LED(RMS)

V

LED(RMS)

I

LED(RMS)

3.5. Typical Waveforms: Abnormal Mode (LED Open)

Figure 23 and Figure 24 show the open-load condition test method and result. When the LED disconnects from the system, the IC cannot operate because the HV pin is disconnected.

Figure 23. Open-Load Condition Test

CH1: VCC, CH2: V

Figure 24. Test Results of Open-Load Condition

DRAIN

, CH3: V

, CH4: I

LED

3.6. Typical Waveforms: Abnormal Mode (Inductor Short)

Figure 25 and Figure 26 show the test method and result of an inductor short. The FLS0116 uses an abnormal over-current protection (AOCP) function, limiting the current on RCS in the event of an inductor short.

Figure 25. Inductor-Short Condition

When CS pin voltage reaches

2.5V, AOCP is enabled after 70ns internal delay time

CH1: VCS, CH2: V

Figure 26. Test Results of Inductor Short Condition

DRAIN

, CH3: V

, CH4: I

LED

3.7. System Efficiency

Figure 27 shows system efficiency results for different AC input voltage frequency conditions. As shown, the input frequency has negligible effect on system efficiency.

Efficiency

Input Voltage

Figure 27. System Efficiency

Table 4. Efficiency Test Results

Input Voltage (V

90VAC

110VAC

180VAC

220VAC

265VAC

) Frequency (Hz) Efficiency (%)

AC

47Hz 81.12

64Hz 81.73

47Hz 81.72

64Hz 82.08

47Hz 80.26

64Hz 82.57

47Hz 78.64

64Hz 79.12

47Hz 76.84

64Hz 77.14

3.8. Power Factor at Rated Load Condition

Figure 28 shows the system Power Factor (PF) performance for the entire input voltage range (90V changes slightly according to the input frequency, but can achieve over 0.85 at 265V condition.

PF

to 265VAC) at different input frequency conditions (47Hz, 64Hz). The PF

AC

Figure 28. Power Factor

Input Voltage

Table 5. PF Test Results

Input Voltage Power Factor

90VAC

110VAC

180VAC

220VAC

265VAC

47Hz 0.97

64Hz 0.97

47Hz 0.97

64Hz 0.97

47Hz 0.94

64Hz 0.94

47Hz 0.91

64Hz 0.90

47Hz 0.88

64Hz 0.85

3.9. Total Harmonic Distortion

Figure 29 shows the Total Harmonic Distortion (THD) performance at different input frequencies. Test results are quite similar, except the 90V international regulations (under 30%).

THD

condition, but meet

AC

Input Voltage

Figure 29. THD Performance

Table 6. THD Test Results

Input Voltage (V

90VAC

110VAC

180VAC

220VAC

265VAC

) Frequency (Hz) THD (%)

AC

47Hz 21.74

64Hz 24.70

47Hz 22.24

64Hz 22.23

47Hz 27.38

64Hz 28.09

47Hz 28.46

64Hz 28.72

47Hz 29.37

64Hz 29.64

3.10. Thermal Performance

V

Figure 30 through Figure 37 show the steady-state thermal test results with different input voltage conditions. Inductor L3 has the highest temperature on the top side of the PCB due to copper resistance. The FLS0116 has the highest temperature on the bottom side of the PCB due to power loss associated with the high-voltage device. The IC temperature is

67.1°C for the 220V

input condition.

AC

CS Resistor (R3) TEMP : 45.9℃

IC TEMP : 51.5℃

Figure 30. Bottom-Side Temperature at 90V

Condition (IC)

CS Resistor (R3) TEMP : 46.6℃

Diode (D1) TEMP : 42.3℃

Inductor TEMP Filter L2 TEMP : 42.1℃

: 56.6℃

AC

Figure 31. Top-Side Temperature at 90V

(Inductor)

Diode (D1) TEMP : 42.9℃

AC

Condition

IC TEMP : 53.7℃

Filter L2 TEMP : 41.6℃

Inductor TEMP : 58.2℃

Figure 32. Bottom-Side Temperature at 110

AC

Condition (IC)

Figure 33. Top-Side Temperature at 110V

(Inductor)

Condition

AC

V

CS Resistor(R3) TEMP : 56.0℃

IC TEMP : 67.1℃

Figure 34. Bottom-Side Temperature at 220

Condition (IC)

CS Resistor(R3) TEMP : 58.8℃

Diode (D1) TEMP : 45.6℃

Filter L2 TEMP : 42.5℃

Inductor TEMP : 62.4℃

AC

Figure 35. Top-Side Temperature at 220V

(Inductor)

Diode (D1) TEMP : 46.8℃

AC

Condition

IC TEMP : 72.8℃

Figure 36. Bottom-Side Temperature at 264

Condition (IC)

Table 7. Temperature Performance by Input Voltage

Input Voltage (V

90VAC 51.5°C 56.6°C

110VAC 53.7°C 58.2°C

220VAC 67.1°C 62.4°C

265VAC 72.8°C 65.4°C

) TIC T

AC

Filter L2 TEMP : 43.5℃

Inductor TEMP : 65.4℃

AC

Figure 37. Top-Side Temperature at 264

(Inductor)

INDUCTOR

AC

Condition

3.11. EMI Test Results

EMI test measurements were conducted in observance of CISPR22 criteria, which has stricter limits than CISPR15 for lighting applications.

Figure 38. Conducted Emission-Line at 110VAC Input Condition, Full Load (10-LED Series)

Figure 39. Conducted Emission-Line at 220VAC Input Condition, Full Load (10-LED Series)

Figure 40. Conducted Emission-Line at 110VAC Input Condition, Full Load

(10-LED Series)

Figure 41. Conducted Emission-Neutral at 220VAC Input Condition, Full Load

(10-LED Series)

4. Revision History

Rev. Date Description

1.0.0 May 2012

1.0.1 June 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.

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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.

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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.

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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.

First Release

Changing Power Rating Changing Form

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.