Fairchild FEB-L032 service manual

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