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© 2016 Fairchild Semiconductor Corporation

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FEBFL77944_L80L012A_B

• Rev. 1.0

1.3.

Controller Internal Block Diagram

VIN

LED1

LED2

LED3

LED4

3

5

7

12

10

Shunt

Regulator

LED Current

Modulator

15

VDD

9

GND

CS

1

14

11

DIM

MODE

GND

16

LED

Current

Feedback

Over-

Temperature

Protection

Figure 1.

Simplified FL77944 Block Diagram

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Содержание FEBFL77944_L80L012A

Страница 1: ...ev 1 0 User Guide for FEBFL77944_L80L012A FEBFL77944_L80L012B Evaluation Board 12 W Down Light AC LED Driver at Low Line Featured Fairchild Product FL77944 Direct questions or comments about this evaluation board to Worldwide Direct Support Fairchild Semiconductor com ...

Страница 2: ...Board Operating Temperature 7 5 Evaluation Board Bill of Materials BOM 8 6 Low Line without SVF Evaluation Board 9 6 1 Evaluation Board Schematic 9 6 2 Key Performance Measurements 10 6 3 Startup 11 6 4 Normal Operation 12 6 5 Dimming Operation Performance 13 6 6 Electromagnetic Interference EMI 14 7 Low Line with SVF Evaluation Board 15 7 1 Evaluation Board Schematic 15 7 2 Key Performance Measur...

Страница 3: ... biasing shunt regulator The FL77944 provides phase cut dimming with wide dimming range smooth dimming control and good dimmer compatibility It achieves the high efficiency with high PF and low THD which makes the FL77944 suitable for high efficiency LED lighting systems The FL77944 has a dedicated DIM pin which can be used with analog or digital PWM dimming The FL77944 can also be used with a rhe...

Страница 4: ...0L012A_B Rev 1 0 1 3 Controller Internal Block Diagram VIN LED1 LED2 LED3 LED4 3 5 7 12 10 Shunt Regulator LED Current Modulator 15 VDD 9 GND CS 1 14 11 DIM MODE GND 16 LED Current Feedback Over Temperature Protection Figure 1 Simplified FL77944 Block Diagram ...

Страница 5: ...77944_L80L012B Low Line 12 W with SVF Test Date APRIL 2016 Test Equipment AC Source 6800 Series Oscilloscope LeCroy 104Xi A Power Meter Yokogawa PZ4000 Multimeter FLUKE 87 V OL770 LED Test and Measurement System for Efficacy Photo Sensor Hamamatsu for Flicker Index Test Items 1 Startup Performance 2 Normal Operation 3 Efficacy 4 Flicker Index 5 Power Factor 6 Total Harmonic Distortion THD 7 Dimmin...

Страница 6: ...B Rev 1 0 3 Evaluation Board Specifications Table 2 Evaluation Board Specifications Version A Version B SVF Cap For Normal Electrolytic Capacitors For SMD Electrolytic Capacitors EVB PHOTO PCB Diameter 100 mm Material Metal Thickness 1 6 t Input Low Line 108 132 VAC ...

Страница 7: ...able 3 Evaluation Board Operating Temperature Without SVF Test Condition With Heat Sink 110 mm 105 mm 5 mm Ambient Temperature 25 C Spot Spot 1 LED 1 78 6 C Spot 2 LED 2 67 6 C Spot 3 LED 3 70 5 C Spot 4 LED 12 75 3 C Spot 5 LED 6 73 3 C Spot 6 LED 11 74 8 C Spot 7 Heat sink 53 4 C Spot 8 PCB 56 4 C Circle IC 71 9 C ...

Страница 8: ...Fairchild 9 REC DIODE 1000 V 1 A S1M DO214AC SMA D1 D2 D3 D4 4 Fairchild SVF Only 10 FUSE 2 A 250 VAC MF2410F1 000TM SMD F1 1 AEM 11 CHIP RES 0 3216 J4 1 12 CHIP RES 0 3216 J1 J2 1 13 LED 1 12 32VF 40 mA 5250 LED 1 12 12 LGIT 14 Sensing R 6R8 F 1 2012 R4 1 SVF Only 15 E CAP 100 µF 50 V DIP EC 1 2 3 4 4 16 Varistor 10D221K 10Φ 140 V TNR1 1 Dimming Option DIM 1 CHIP RES 4 7 M 2012 R10 1 DIM 2 CHIP R...

Страница 9: ...r SF 10p W by Cooper Wiring Devices LED3 LG52xx U1 FL77944 MODE 16 VIN 1 NC 2 VDD 15 LED1 3 GND 14 NC 13 NC 4 LED2 5 NC 6 LED3 7 NC 8 GND 9 Isense 10 PWM 11 LED4 12 ZD1 10V C2 153 2012 R1 LED7 9 LED4 6 Mode connects to GND Enable PWM DIM function Mode connects to VDD Disable PWM DIM function LED10 12 F1 250Vac 2A R9 105 2012 Low Line U2A LM258 SO 5 6 7 8 4 R10 475 2012 LED4 LG52xx LED5 LG52xx LED6...

Страница 10: ... 1000 51 1080 86 Efficacy lm W 88 98 82 31 75 37 89 52 80 97 75 90 Flicker Index 0 376 0 351 0 328 0 394 0 370 0 343 Note 2 Lumen lm Measured after one minute by initial turn on 0 955 temperature saturation factor Table 5 shows the key performance measurements for low line without Self Valley Fill SVF condition according to the input voltage min 108 VAC typical 120 VAC max 132 VAC and 50 Hz 60 Hz ...

Страница 11: ...VAC 120 VAC 132 VAC 50 Hz 60 Hz Figure 3 Ch1 VDD 10 0 V div Ch2 VIN ac 100 V div Ch3 IIN ac 50 0 mA div Table 6 shows the overall startup performance of low line without SVF evaluation board at the variable input voltage with 50 60 Hz when no dimmer is connected The input current starts flowing at least 2 ms after the AC input power switch turns on for all condition ...

Страница 12: ...gure 4 Ch2 VIN ac 100 V div Ch4 IIN ac 50 0 mA div Table 7 shows the normal operation waveform of low line without SVF evaluation board at the variable input voltage with 50 60 Hz when no dimmer is connected The condition of the LED 4 pin is turned on when the input voltage is larger than at least all string LED forward voltage 35 V 4 ea 140 V Also the conduction time of the LED 4 pin is depend on...

Страница 13: ...iring Devices Figure 6 Low Line w o SVF Dimming Performance Output Current vs Analog Dimming The FL77944 analog dimming function can be implemented with a few external components The converter output current at the rated line voltage can be adjusted within the range of 8 4 to 100 of the nominal current value through 0 to 10 V A DIM signal 0 00 10 00 20 00 30 00 40 00 50 00 60 00 70 00 80 00 90 00 ...

Страница 14: ...FL77944_L80L012A_B Rev 1 0 6 6 Electromagnetic Interference EMI Figure 7 110 VAC 60 Hz L At least 10 dB Margin Blue Trace Peak Scan Green Trace Average Scan Figure 8 110 VAC 60 Hz N At least 10 dB Margin Blue Trace Peak Scan Green Trace Average Scan ...

Страница 15: ...11 LED4 12 ZD1 10V EC3 100uF 50V C2 153 2012 EC1 100uF 50V EC2 100uF 50V R1 LED4 6 Mode connects to GND Enable PWM DIM function Mode connects to VDD Disable PWM DIM function LED10 12 LED7 9 F1 250Vac 2A EC1 EC2 EC3 EC4 can be used for enable Self Valley Fill function Disable Self Valley Fill Function EC1 EC2 EC3 EC4 DNP R9 105 2012 Low Line U2A LM258 SO 5 6 7 8 4 R1 204 3216 R10 475 2012 LED4 LG52...

Страница 16: ...1023 61 Efficacy lm W 90 85 82 74 75 22 90 44 82 28 74 72 Flicker Index 0 142 0 129 0 117 0 139 0 121 0 117 Note 3 Lumen lm Measured after 1 minute by initial turn on 0 955 temperature saturation factor Table 10 shows the key performance measurements for low line with self valley fill Self Valley Fill SVF condition according to the input voltage min 108 VAC typical 120 VAC max 132 VAC and 50 Hz 60...

Страница 17: ...be adjusted within the range of 8 2 to 100 of the nominal current value through 0 to 10 V A DIM signal 7 4 Electromagnetic Interference EMI Figure 11 120 VAC 60 Hz L At Least 10 dB Margin Blue Trace Peak Scan Green Trace Average Scan Figure 12 120 VAC 60 Hz N At least 12 dB Margin Blue Trace Peak Scan Green Trace Average Scan 0 00 10 00 20 00 30 00 40 00 50 00 60 00 70 00 80 00 90 00 0 1 2 3 4 5 6...

Страница 18: ...ustain 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 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 s...

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